A device for automatically adding protective slag to continuous casting crystallizer

Abstract

The present invention relates to the technical field of protective slag delivery, and specifically to a device for automatically adding protective slag to a continuous casting crystallizer, comprising a feeding mechanism, a control rod, a hopper, a telescopic component, a feeding pipe, a driving motor and a conveying component; the feeding mechanism is arranged on the side of a water injection port of the continuous casting crystallizer, the feeding mechanism comprises a control component, and the control component drives the telescopic component to telescopically move in the feeding mechanism; the control rod is installed on the side of the feeding mechanism, and the hopper is installed on the top of the feeding mechanism; the telescopic component is installed inside the feeding mechanism, the telescopic component comprises a telescopic block and a telescopic rack, and the telescopic rack drives the telescopic block to move under the control of the control component; the feeding pipe is installed below the telescopic component, and the driving motor is installed on the feeding pipe; the conveying component is installed inside the feeding pipe, the conveying component comprises a spiral blade, and the spiral blade rotates under the drive of the driving motor to transport the protective slag to one end of the feeding pipe.

Description

Technical Field

[0001] The invention relates to the technical field of protective slag placement, and in particular to a device for automatically adding protective slag to a continuous casting crystallizer. Background Art

[0002] The continuous casting mold needs to be filled with protective slag, mainly to ensure the smooth progress of the continuous casting process and to achieve the following functions: the protective slag covers the surface of the molten steel in the crystallizer, which can prevent the molten steel from direct contact with the outside world, reduce heat loss, maintain a stable thermal balance in the crystallizer, and thus ensure the continuity of the continuous casting process. The protective slag will form a liquid slag layer at high temperature. The liquid slag penetrates between the molten steel and the crystallizer, plays a lubricating role, reduces the friction between the crystallizer wall and the primary solidified shell, reduces the risk of bonding, and helps to stabilize the quality of the billet. The protective slag can absorb non-metallic inclusions in the molten steel. After the inclusions float to the surface of the molten steel, they will be captured and dissolved by the protective slag, further improving the purity of the steel. The protective slag covers the surface of the molten steel, which can effectively prevent the molten steel from contacting with the air, prevent the surface of the molten steel from being oxidized, and reduce the generation of secondary oxidation and surface defects. The protective slag can adjust the heat flux intensity of the solidification process of the molten steel in the crystallizer by regulating the thickness and chemical composition of the liquid slag layer, thereby optimizing the surface and internal quality of the billet. The presence of mold slag can alleviate the thermal stress caused by the large temperature difference between the molten steel and the primary solidified shell, and reduce the possibility of crack formation. Mold slag is an indispensable part of the continuous casting process, and its performance directly affects the quality of the ingot and the operating efficiency of the continuous casting machine. Therefore, in actual production, the proportion and placement of mold slag need to be accurately adjusted according to the specific steel grade and production conditions.

[0003] The water injection port (usually the area where cooling water is introduced) is an essential part of the crystallizer design. Its structure makes it impossible to evenly dispense the protective slag, and it is necessary to operate on both sides of the water injection port separately. This partitioned delivery method increases the complexity of the operation and prolongs the delivery time. Delivery path restriction: The protective slag cannot directly cover the entire surface of the molten steel, and needs to be delivered to the areas on both sides of the water injection port in sequence. High positioning accuracy requirements: To avoid waste or accumulation, the placement and amount of the protective slag must be precisely controlled, further extending the operation cycle. Accurate and partitioned protective slag delivery requires highly automated equipment, such as a multi-axis robotic arm or a partition-controlled hopper system. The complex design of automated equipment increases equipment costs and maintenance difficulties, and also places higher requirements on operational reliability.

[0004] In view of the above situation, in order to overcome the above technical problems, the present invention designs a device for automatically adding protective slag to a continuous casting crystallizer to solve the above technical problems. Summary of the invention

[0005] The technical purpose to be achieved by the present invention is to design an automatic protective slag adding device for a continuous casting crystallizer, design the feeding device as a dual-channel form, which can simultaneously feed protective slag to both sides of the water injection port and other areas, and have a built-in power device so that the feeding device can be mobile and fed, thereby shortening the feeding time.

[0006] In order to achieve the above technical objectives, the present invention provides the following technical solutions:

[0007] A device for automatically adding protective slag to a continuous casting crystallizer comprises a feeding mechanism, a control rod, a hopper, a telescopic component, a feeding pipe, a driving motor and a conveying component; the device is intended to improve the automation level of continuous casting protective slag feeding, optimize the feeding efficiency, and ensure that the protective slag can evenly cover the surface of the molten steel in the crystallizer, thereby improving the stability of the continuous casting process and the quality of the ingot.

[0008] The core part of the device is the feeding mechanism, which is set on the side of the water injection port of the continuous casting crystallizer. The feeding mechanism includes a control component and a telescopic component. The control component is responsible for driving the telescopic component to perform precise telescopic movement in the feeding mechanism, thereby realizing dynamic adjustment of the mold slag placement position. Through this structural design, the device can flexibly adapt to the spatial limitations of the water injection port area, so that the mold slag can cover the required area.

[0009] The control lever is located on the side of the feeding mechanism and is used to assist in fixing and adjusting the position of the device. The hopper is installed on the top of the feeding mechanism and is the main container for storing the protective slag. After the protective slag is discharged from the hopper, it is transported to the specified location through the internal conveying system.

[0010] The telescopic assembly is installed inside the feeding mechanism and is the key to the precise feeding of the device. The assembly includes a telescopic block and a telescopic rack. The telescopic rack drives the telescopic block to move under the drive of the control assembly, thereby changing the telescopic length and angle of the feeding pipe. The feeding pipe is located at the bottom of the telescopic assembly and works in conjunction with the telescopic assembly to ensure that the protective slag can be accurately fed into the crystallizer.

[0011] The feeding pipe is equipped with a drive motor, which is connected to the conveying assembly inside the feeding pipe through a transmission mechanism. The conveying assembly adopts a spiral blade structure, which rotates at high speed under the drive of the drive motor, transporting the protective slag from the hopper to the end of the feeding pipe and accurately dropping it onto the surface of the molten steel.

[0012] Through this design, the device can quickly and evenly distribute the mold slag to the surface of the crystallizer, reduce manual intervention, improve the automation of continuous casting operations, and reduce the failure rate of equipment operation. This device is particularly suitable for continuous casting crystallizers with complex structures or limited space, and is an important innovation to improve continuous casting efficiency and billet quality.

[0013] The feeding mechanism also includes a feeding frame, a feeding cavity, a diverter block and a limit groove, which are designed to improve the efficiency and uniformity of the protective slag delivery, while optimizing the stability and energy-saving performance of the equipment.

[0014] The feeding frame is the main part of the feeding mechanism, and its overall design is a V-shaped structure. The two side axes of the feeding frame are at a 45° angle to the central axis of the hopper. This oblique setting makes full use of gravity, allowing the protective slag to quickly fall from the hopper into the feeding cavity. The dual-channel design enables the protective slag to be released from both sides at the same time, effectively shortening the release time while avoiding the unevenness problem that may be caused by traditional single-channel release. In addition, since the protective slag relies on gravity to complete the initial conveying process, no additional power source is required, which significantly reduces energy consumption and improves the operating stability and maintenance convenience of the equipment.

[0015] The feeding chamber is located inside the feeding frame and is the passage for the protective slag to enter the telescopic block from the hopper. The feeding chamber achieves rapid transportation of protective slag through structural optimization, and its vertical through-design further reduces the risk of material accumulation. A diverter block is installed in the middle of the feeding chamber, which is a key component for the device to achieve uniform delivery. The function of the diverter block is to prevent the protective slag from accumulating on the platform at the top of the feeding frame. By reasonably guiding the protective slag to flow to the feeding chambers on both sides, the protective slag on both sides can be evenly distributed, providing a stable material foundation for the subsequent telescopic component operation.

[0016] The control assembly is installed on the upper part of the feeding frame and is responsible for driving the telescopic block to perform reciprocating linear motion. This design, in conjunction with the feeding chamber, can effectively adjust the placement and quantity of the protective slag to meet the needs of different crystallizer areas. There are also limit grooves on the inner surface of the feeding frame, which guide and limit the movement of the telescopic block in a linear manner to ensure the stability and accuracy of the movement of the telescopic block. This structural design avoids the deviation or stagnation of the telescopic block during movement and improves the reliability of the device operation.

[0017] In general, this feeding mechanism fully combines multiple designs such as the V-shaped feeding frame, dual-channel feeding cavity, diverter block and limit slot, which not only achieves high efficiency and uniformity of mold slag delivery, but also shows significant advantages in energy saving and equipment stability. This structure is suitable for continuous casting molds of different specifications and can adapt to complex process requirements. It is an important innovation in the design of mold slag delivery device.

[0018] The control assembly consists of a micro motor and a rotating gear, and is the core component for achieving precise control of the feeding device. The micro motor is installed inside the feeding frame. Its compact design not only saves equipment space, but also provides sufficient power output. By controlling the forward and reverse rotation of the micro motor, the rotating gear can achieve bidirectional rotation. The rotating gear is fixed at the output end of the micro motor and precisely meshes with the telescopic rack to form a stable transmission structure.

[0019] In this transmission system, the rotation of the rotating gear drives the telescopic rack to move in a linear direction, thereby driving the telescopic block to achieve reciprocating linear motion. This design structure is simple and reliable, and can accurately control the position and stroke of the telescopic block to meet the requirements of protective slag delivery under different working conditions, while improving the working efficiency and operation stability of the equipment.

[0020] The telescopic assembly also includes a limit bar and a feeding channel, and its design not only enhances the structural stability of the device, but also optimizes the conveying efficiency and uniformity of the protective slag, and is a key part of the entire feeding device.

[0021] The telescopic block is installed inside the feeding mechanism and can perform precise telescopic movement in the feeding chamber. It is responsible for driving the feeding tube to move. As an important connecting component between the feeding tube and the feeding mechanism, the telescopic block ensures that the protective slag can smoothly enter the feeding tube from the feeding chamber through its stable operation. In order to prevent the telescopic block from deflecting or getting stuck during movement, limit bars are installed on both sides. The limit bar is embedded in the limit groove inside the feeding mechanism, and guides the telescopic block to maintain a consistent movement path by sliding, thereby improving the accuracy and reliability of the device operation.

[0022] A telescopic rack is provided on the upper part of the telescopic block, which realizes the reciprocating motion of the telescopic block by meshing with the rotating gear in the control assembly. This design ensures the controllability of the feeding process, so that the protective slag can be fed into the crystallizer as needed. At the same time, a feeding channel is opened inside the telescopic block, which is the key path for the protective slag to be transported from the feeding chamber to the feeding pipe. The cross-section of the feeding channel is designed to be trapezoidal, and its diameter gradually decreases along the feeding mechanism toward the feeding pipe. This design can not only effectively guide the flow of protective slag, but also prevent material accumulation or blockage, ensuring the stability and uniformity of the protective slag during the entire transportation process.

[0023] The gradual reduction of the trapezoidal cross-section of the feeding channel helps to concentrate the flow direction of the protective slag, making it more stable and uniform when entering the feeding pipe. This structural optimization not only avoids the loss of protective slag during the transportation process, but also improves the feeding quality, providing strong support for the efficient feeding of protective slag in the continuous casting crystallizer.

[0024] In general, the telescopic assembly not only realizes the flexible adjustment of the feeding pipe, but also ensures the accuracy and stability of the mold slag delivery through the coordinated cooperation of the telescopic block, limit bar, telescopic rack and feeding channel. This design is of great significance in saving energy, improving equipment stability and ensuring the quality of feeding, and fully reflects the technical advantages of the efficient and automated mold slag feeding device.

[0025] The feeding pipe includes a feeding part, a bending part and a feeding part, which is designed as an L-shaped structure to optimize the conveying path of the mold slag and ensure the accuracy and stability of the feeding. The L-shaped design of the feeding pipe enables the feeding part to be directly located above the mold slag feeding area, ensuring that the mold slag can fall vertically into the target position in the crystallizer, effectively improving the feeding accuracy.

[0026] The end near the telescopic component is a shorter straight section, called the feed section, which is used to receive the protective slag transmitted by the feeding channel. The short straight structure of the feed section is not only convenient for docking with the telescopic component, but also reduces the flow resistance of the protective slag in the initial stage of transmission. The longer straight section is set as the feeding section, which directly guides the protective slag to the delivery area to ensure that the delivery range of the protective slag covers the required area.

[0027] The bending part connects the feeding part and the feeding part, and the inner diameter of the bending part is designed to be consistent with that of the feeding part and the feeding part. This consistency avoids the problem of mold slag being accumulated or stuck in the bending part due to a sudden change in the inner diameter, and ensures the smoothness of the mold slag during the transportation process. At the same time, the reasonable curvature design of the bending part reduces the loss of the transportation path, allowing the mold slag to pass through the bend stably and accurately reach the target area.

[0028] On the whole, the L-shaped design of the feeding pipe combined with the consistency of the inner diameter effectively solves the accumulation problem of protective slag during transportation and ensures the efficiency and accuracy of feeding.

[0029] The feeding pipe also includes a feeding port and a discharge hole, and its design further optimizes the efficiency and uniformity of the casting slag, while solving the operational problems that may be caused by the accumulation of casting slag. The feeding ports are evenly spaced below the feeding part and directly above the casting slag delivery area. This arrangement ensures that the casting slag can fall quickly and evenly from the feeding pipe to avoid affecting the protection effect due to uneven distribution. The uniform delivery of casting slag is directly related to the cooling and lubrication effect during the continuous casting process. Therefore, by optimizing the design of the feeding port, the uniformity of the casting slag coverage is improved, which helps to improve the mechanical properties and surface quality of the continuous casting products.

[0030] The discharge hole is set at the end of the feeding part, and it is designed in a circular array form, which can effectively solve the problem of excess accumulation of protective slag during the feeding process. Excess protective slag may accumulate at the bottom of the feeding part. If it is not cleaned in time, it may hinder the normal operation of the pushing system. Through the setting of the discharge hole, the excess protective slag can be discharged in time under the rotation of the pusher blades, thereby preventing the internal accumulation from interfering with the conveying components. In addition, the function of the discharge hole is not limited to cleaning excess protective slag, but also can deliver these slag materials to the uncovered area under the feeding part, further ensuring the distribution integrity of the protective slag on the entire crystallizer surface.

[0031] This design combines the functions of the feeding port and the discharge hole, which not only improves the efficiency of casting slag delivery and the regional coverage effect, but also greatly reduces the risk of failure caused by accumulation during the operation of the device. By rationally arranging the feeding port and the discharge hole, the system not only improves the quality of continuous casting products, but also significantly enhances the stability and reliability of the device operation, which is a key innovation in the structure of the casting slag delivery device.

[0032] The transmission assembly also includes a rotating rod and a pusher blade, and its structural design is intended to optimize the transmission efficiency of the protective slag, while solving the problem of protective slag accumulation in the bending part, ensuring the operating stability and continuity of the entire system.

[0033] The rotating rod is the core component of the conveying assembly. It is installed in the middle of the feeding section and connected to the output end of the drive motor through the bend to achieve overall power transmission. The outer surface of the rotating rod is equipped with spiral blades to drive the protective slag to move along the feeding pipe to the bottom. The design of the spiral blades is directly related to the conveying efficiency and uniformity of the protective slag. In order to adapt to the special movement path of the bend, the radius of the spiral blades gradually increases in the direction of the pusher blades in the bend area, while in other areas it remains consistent with the inner diameter of the feeding section.

[0034] The bend is a key area where mold slag is prone to accumulation during transportation, because the fluidity of the mold slag decreases when the path changes. By optimizing the design of the spiral blades in the bend, that is, gradually increasing the blade radius in the bend, the conveying thrust of the mold slag in this area can be increased, thereby effectively reducing the risk of accumulation. This improvement significantly improves the speed and stability of the mold slag entering the feeding part from the bend, ensuring the continuous and efficient operation of the system.

[0035] The pusher blade at the other end of the rotating rod is responsible for timely discharging the excess protective slag from the end of the feeding section. The pusher blade transports the residual protective slag to the outside of the discharge hole through the rotation action, preventing the accumulation of excessive protective slag at the bottom of the feeding section from affecting the normal operation of the conveying assembly. In addition, the pusher blade also plays a role in assisting the distribution of protective slag, evenly distributing the discharged protective slag to the uncovered area, further improving the comprehensiveness and uniformity of the protective slag delivery.

[0036] The design of this conveying component not only solves the problem of accumulation in the curved part through the synergistic effect of the rotating rod, spiral blades and pusher blades, but also optimizes the conveying path of the mold slag, ensuring that it passes through the entire feeding pipeline quickly and smoothly. The addition of pusher blades further improves the distribution effect of the mold slag and reduces obstacles in the operation of the equipment. The overall design not only improves the efficiency of mold slag delivery, but also enhances the stability of the system, providing strong technical support for the efficient operation of the continuous casting process.

[0037] The beneficial effects of the present invention are as follows:

[0038] 1. The present invention sets a dual-channel feeding mechanism, and the feeding mechanism adopts a dual-channel design to achieve mirror-like simultaneous delivery to the delivery areas on both sides of the water injection port. This design can not only evenly deliver protective slag to both sides of the water injection port at the same time, but also cover other areas, thereby improving the delivery efficiency and comprehensiveness of the protective slag. Through this dual-channel approach, the unevenness problem caused by traditional single-sided or step-by-step delivery is avoided, which provides a guarantee for the stability of the continuous casting process and product quality. The built-in power device enables it to achieve mobile delivery during the working process. This function significantly shortens the overall delivery time of the protective slag, reduces the waiting time in the production process, and at the same time improves the automation level of the equipment and reduces the need for manual intervention.

[0039] 2. The L-shaped design of the feeding pipe optimizes the conveying path of the protective slag, especially in the curved parts. The foundation of the spiral feeding combined with the special design solves the problem of the accumulation of protective slag in the curved parts. By adjusting the radius of the spiral blades, the conveying capacity of the curved area is improved, ensuring that the protective slag enters the straight feeding part quickly and smoothly, greatly improving the transmission efficiency and system reliability. In the bottom area of ​​the feeding pipe, the device is designed with a structure that matches the pusher blades and the discharge hole to deal with the problem of excess protective slag accumulation. The rotating action of the pusher blades can effectively guide the excess protective slag to the discharge hole for discharge, while achieving supplementary coverage of the delivery area, ensuring the integrity and uniformity of the protective slag delivery. This design eliminates the transmission obstacles caused by accumulation and makes the distribution of the protective slag more even.

[0040] 3. The feeding mechanism adopts a V-shaped structure, and the protective slag is introduced into the feeding pipe through natural gravity feeding. This design avoids the use of additional power sources, thereby reducing energy consumption, which not only improves the working efficiency of the equipment, but also reduces operating costs. At the same time, the gravity feeding method further simplifies the system structure, reduces failure points, and enhances the operating stability of the equipment. The present invention effectively solves the problems of efficiency, uniformity and stability of protective slag feeding through the mirror-image feeding of the dual-channel feeding mechanism, the optimized transportation of the L-shaped feeding pipe, the stacking treatment of the pusher blades and the discharge hole, and the energy-saving design of the V-shaped structure and gravity feeding. This innovative design significantly improves the automation level of the continuous casting process, provides reliable guarantee for the production of high-quality products, and achieves the goal of energy conservation and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0042] The above and other aspects of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which:

[0043] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0044] Figure 2 is a cross-sectional view of the feeding mechanism of the present invention;

[0045] Figure 3 It is a schematic diagram of the coordination between the control component and the telescopic component of the present invention;

[0046] Figure 4 is a cross-sectional view of the telescopic assembly and the feeding pipe of the present invention;

[0047] Figure 5 It is a structural schematic diagram of the feeding pipe of the present invention;

[0048] Figure 6 is a schematic diagram of the structure of the transmission component of the present invention;

[0049] Figure 7 It is a schematic diagram of the displacement direction of the feeding tube when the present invention is working.

[0050] In the figure: 1. feeding mechanism; 11. feeding frame; 12. feeding cavity; 13. diverter block; 14. control component; 141. micro motor; 142. rotating gear; 15. limit slot; 2. control rod; 3. hopper; 4. telescopic component; 41. telescopic block; 42. limit bar; 43. telescopic rack; 44. feeding channel; 5. feeding pipe; 51. feeding part; 52. bending part; 53. feeding part; 54. feeding port; 55. discharging hole; 6. driving motor; 7. transmission component; 71. rotating rod; 72. spiral blade; 73. pushing fan blade. DETAILED DESCRIPTION

[0051] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0052] like Figure 1-7 As shown, a device for automatically adding protective slag to a continuous casting crystallizer includes a feeding mechanism 1, a control rod 2, a hopper 3, a telescopic component 4, a feeding pipe 5, a driving motor 6 and a conveying component 7; the device is intended to improve the automation level of continuous casting protective slag feeding, optimize the feeding efficiency, and ensure that the protective slag can evenly cover the surface of the molten steel in the crystallizer, thereby improving the stability of the continuous casting process and the quality of the ingot.

[0053] The core part of the device is the feeding mechanism 1, which is arranged on the side of the water injection port of the continuous casting crystallizer. The feeding mechanism 1 includes a control component 14 and a telescopic component 4. The control component 14 is responsible for driving the telescopic component 4 to perform precise telescopic movement in the feeding mechanism 1, thereby realizing dynamic adjustment of the mold slag placement position. Through this structural design, the device can flexibly adapt to the space limitations of the water injection port area, so that the mold slag can cover the required area.

[0054] The control rod 2 is located on the side of the feeding mechanism 1 and is used to assist in fixing and adjusting the position of the device. The hopper 3 is installed on the top of the feeding mechanism 1 and is the main container for storing the protective slag. After the protective slag is discharged from the hopper 3, it is transported to the designated location through the internal conveying system.

[0055] The telescopic assembly 4 is installed inside the feeding mechanism 1 and is the key to the accurate feeding of the device. The assembly includes a telescopic block 41 and a telescopic rack 43. The telescopic rack 43 drives the telescopic block 41 to move under the drive of the control assembly 14, thereby changing the telescopic length and angle of the feeding pipe 5. The feeding pipe 5 is located at the bottom of the telescopic assembly 4 and works in conjunction with the telescopic assembly 4 to ensure that the protective slag can be accurately fed into the crystallizer.

[0056] A driving motor 6 is installed on the feeding pipe 5, and the driving motor 6 is connected to the conveying assembly 7 inside the feeding pipe 5 through a transmission mechanism. The conveying assembly 7 adopts a spiral blade 72 structure, and the spiral blade 72 rotates at a high speed under the drive of the driving motor 6, conveying the protective slag from the hopper 3 to the end of the feeding pipe 5, and accurately dropping it onto the surface of the molten steel.

[0057] Through this design, the device can quickly and evenly distribute the mold slag to the surface of the crystallizer, reduce manual intervention, improve the automation of continuous casting operations, and reduce the failure rate of equipment operation. This device is particularly suitable for continuous casting crystallizers with complex structures or limited space, and is an important innovation to improve continuous casting efficiency and billet quality.

[0058] like Figure 2 As shown, the feeding mechanism 1 also includes a feeding frame 11, a feeding cavity 12, a diverter block 13 and a limit groove 15, which is designed to improve the efficiency and uniformity of the casting slag, while optimizing the stability and energy-saving performance of the equipment.

[0059] The feeding frame 11, as the main part of the feeding mechanism 1, is designed as a V-shaped structure. The two side axes of the feeding frame 11 are at an angle of 45° to the central axis of the hopper 3. This oblique setting makes full use of the effect of gravity, so that the protective slag can quickly fall from the hopper 3 into the feeding cavity 12. The dual-channel design realizes the function of simultaneously delivering protective slag on both sides, effectively shortens the delivery time, and avoids the unevenness problem that may be caused by traditional single-channel delivery. In addition, since the protective slag relies on gravity to complete the initial conveying process, no additional power source is required, which significantly reduces energy consumption and improves the operating stability and maintenance convenience of the equipment.

[0060] The feeding chamber 12 is located inside the feeding frame 11, and is the passage for the protective slag to enter the telescopic block 41 from the hopper 3. The feeding chamber 12 achieves rapid transportation of protective slag through structural optimization, and its vertical through-design further reduces the risk of material accumulation. A diverter block 13 is installed in the middle of the feeding chamber 12, which is a key component for the device to achieve uniform delivery. The function of the diverter block 13 is to prevent the protective slag from accumulating on the platform at the top of the feeding frame 11, and to reasonably guide the protective slag to flow to the feeding chambers 12 on both sides to ensure that the protective slag on both sides can be evenly distributed, thereby providing a stable material basis for the subsequent operation of the telescopic assembly 4.

[0061] The control assembly 14 is installed on the upper part of the feeding frame 11 and is responsible for driving the telescopic block 41 to perform reciprocating linear motion. This design, in conjunction with the feeding chamber 12, can effectively adjust the placement and quantity of protective slag to meet the needs of different crystallizer areas. A limit groove 15 is also provided on the inner surface of the feeding frame 11. The limit groove 15 linearly guides and limits the movement of the telescopic block 41 to ensure the stability and accuracy of the movement of the telescopic block 41. This structural design avoids the deviation or jamming of the telescopic block 41 during its movement, thereby improving the reliability of the device operation.

[0062] In general, the feeding mechanism 1 fully combines the V-shaped feeding frame 11, the dual-channel feeding cavity 12, the diverter block 13 and the limit groove 15 and other designs, which not only realizes the high efficiency and uniformity of the casting slag, but also shows significant advantages in energy saving and equipment stability. This structure is suitable for continuous casting crystallizers of different specifications and can adapt to complex process requirements. It is an important innovation in the design of the casting slag feeding device.

[0063] like Figure 3As shown, the control assembly 14 is composed of a micro motor 141 and a rotating gear 142, and is the core component for realizing precise control of the feeding device. The micro motor 141 is installed inside the feeding frame 11. Its compact design not only saves equipment space, but also provides sufficient power output. By controlling the forward and reverse rotation of the micro motor 141, the rotating gear 142 can realize bidirectional rotation. The rotating gear 142 is fixed to the output end of the micro motor 141 and precisely meshes with the telescopic rack 43 to form a stable transmission structure.

[0064] In this transmission system, the rotation of the rotating gear 142 drives the telescopic rack 43 to move in a linear direction, thereby driving the telescopic block 41 to achieve reciprocating linear motion. This design structure is simple and reliable, and can accurately control the position and stroke of the telescopic block 41 to meet the requirements of protective slag delivery under different working conditions, while improving the working efficiency and operation stability of the equipment.

[0065] like Figure 3 As shown, the telescopic assembly 4 also includes a limit bar 42 and a feeding channel 44, the design of which not only enhances the structural stability of the device, but also optimizes the conveying efficiency and uniformity of the protective slag, and is a key part of the entire feeding device.

[0066] The telescopic block 41 is installed inside the feeding mechanism 1, and can perform precise telescopic movement in the feeding chamber, and undertakes the main task of driving the feeding tube 5 to move. As an important connecting component between the feeding tube 5 and the feeding mechanism 1, the telescopic block 41 ensures that the protective slag can smoothly enter the feeding tube 5 from the feeding chamber 12 through its stable operation. In order to prevent the telescopic block 41 from offsetting or getting stuck during movement, limit bars 42 are installed on both sides of it. The limit bar 42 is embedded in the limit groove 15 inside the feeding mechanism 1, and guides the telescopic block 41 to maintain a consistent movement path by sliding, thereby improving the accuracy and reliability of the operation of the device.

[0067] A telescopic rack 43 is provided on the upper part of the telescopic block 41, and the telescopic block 41 is meshed with the rotating gear 142 in the control assembly 14 to realize the back and forth reciprocating motion. This design ensures the controllability of the feeding process, so that the protective slag can be fed into the crystallizer as needed. At the same time, a feeding channel 44 is opened inside the telescopic block 41, which is the key path for the protective slag to be transported from the feeding chamber 12 to the feeding pipe 5. The cross-section of the feeding channel 44 is designed to be trapezoidal, and its diameter gradually decreases along the feeding mechanism 1 toward the feeding pipe 5. This design can not only effectively guide the flow of protective slag, but also prevent material accumulation or blockage, thereby ensuring the stability and uniformity of the protective slag during the entire transportation process.

[0068] The gradual reduction of the trapezoidal cross section of the feeding channel 44 helps to concentrate the flow direction of the protective slag, making it more stable and uniform when entering the feeding pipe 5. This structural optimization not only avoids the loss of protective slag during the transportation process, but also improves the feeding quality, providing strong support for the efficient feeding of protective slag in the continuous casting crystallizer.

[0069] In general, the telescopic assembly 4 not only realizes the flexible adjustment of the feeding pipe 5, but also ensures the accuracy and stability of the mold slag delivery through the coordinated cooperation of the telescopic block 41, the limit bar 42, the telescopic rack 43 and the feeding channel 44. This design is of great significance in saving energy, improving equipment stability and ensuring the delivery quality, and fully reflects the technical advantages of the efficient and automated mold slag delivery device.

[0070] like Figure 4-5 As shown, the feeding pipe 5 includes a feeding portion 51, a curved portion 52 and a feeding portion 53, which is designed as an L-shaped structure to optimize the conveying path of the protective slag and ensure the accuracy and stability of the feeding. The L-shaped design of the feeding pipe 5 enables the feeding portion 53 to be directly located above the protective slag feeding area, ensuring that the protective slag can fall vertically into the target position in the crystallizer, effectively improving the feeding accuracy.

[0071] The end near the telescopic assembly 4 is a shorter straight section, called the feed section 51, which is used to receive the protective slag transmitted by the feeding channel 44. The short straight structure of the feed section 51 is not only convenient for docking with the telescopic assembly 4, but also reduces the flow resistance of the protective slag in the initial stage of transmission. The longer straight section is set as the feeding section 53, which directly guides the protective slag to the delivery area to ensure that the delivery range of the protective slag covers the required area.

[0072] The feed part 51 and the feeding part 53 are connected by the curved part 52, and the inner diameter of the curved part 52 is designed to be consistent with the feed part 51 and the feeding part 53. This consistency avoids the problem of the mold slag being accumulated or stuck in the curved part 52 due to the sudden change of the inner diameter, and ensures the smoothness of the mold slag during the transportation process. At the same time, the reasonable curvature design of the curved part 52 reduces the loss of the transportation path, so that the mold slag can stably pass through the curve and accurately reach the target area.

[0073] On the whole, the L-shaped design of the feeding pipe 5 combined with the characteristics of the consistency of the inner diameter effectively solves the accumulation problem of the protective slag during transportation and ensures the efficiency and accuracy of feeding.

[0074] The feeding pipe 5 also includes a feeding port 54 and a discharge hole 55, the design of which further optimizes the efficiency and uniformity of the casting slag, while solving the operational problems that may be caused by the accumulation of casting slag. The feeding ports 54 are evenly spaced below the feeding part 53 and directly above the casting slag delivery area. This arrangement ensures that the casting slag can fall quickly and evenly from the feeding pipe 5 to avoid affecting the protection effect due to uneven distribution. The uniform delivery of casting slag is directly related to the cooling and lubrication effect during the continuous casting process. Therefore, by optimizing the design of the feeding port 54, the uniformity of the casting slag coverage is improved, which helps to improve the mechanical properties and surface quality of the continuous casting product.

[0075] The discharge hole 55 is arranged at the end of the feeding part 53, and is designed in the form of a circular array, which can effectively solve the problem of excess accumulation of protective slag during the feeding process. Excess protective slag may accumulate at the bottom of the feeding part 53. If it is not cleaned in time, it may hinder the normal operation of the pushing system. Through the provision of the discharge hole 55, the excess protective slag can be discharged in time under the rotation of the pushing blade 73, thereby preventing the internal accumulation from interfering with the conveying component 7. In addition, the function of the discharge hole 55 is not limited to cleaning excess protective slag, but can also deliver these slag materials to the uncovered area below the feeding part 53, further ensuring the distribution integrity of the protective slag on the entire crystallizer surface.

[0076] This design combines the functions of the feeding port 54 and the discharge hole 55, which not only improves the efficiency of casting slag delivery and the regional coverage effect, but also greatly reduces the risk of failure caused by accumulation during the operation of the device. By rationally arranging the feeding port 54 and the discharge hole 55, the system not only improves the quality of continuous casting products, but also significantly enhances the stability and reliability of the device operation, which is a key innovation in the structure of the casting slag delivery device.

[0077] The transmission assembly 7 also includes a rotating rod 71 and a pusher blade 73, and its structural design is intended to optimize the transmission efficiency of the protective slag, while solving the problem of protective slag accumulation in the curved portion 52, thereby ensuring the operational stability and continuity of the entire system.

[0078] The rotating rod 71 is the core component of the conveying assembly 7, which is installed in the middle position of the feeding part 53 and is connected to the output end of the driving motor 6 through the curved part 52 to realize the overall power transmission. The outer surface of the rotating rod 71 is equipped with a spiral blade 72, which is used to drive the protective slag to move along the feeding pipe 5 to the bottom. The design of the spiral blade 72 is directly related to the conveying efficiency and uniformity of the protective slag. In order to adapt to the special movement path of the curved part 52, the radius of the spiral blade 72 gradually increases in the direction of the pusher blade 73 in the curved part 52 area, and remains consistent with the inner diameter of the feeding part 53 in other areas.

[0079] The bend 52 is a key area where the mold slag is prone to accumulation during transportation, because the fluidity of the mold slag decreases when the path changes. By optimizing the design of the spiral blade 72 of the bend 52, that is, gradually increasing the blade radius in the bend 52, the conveying thrust of the mold slag in this area can be increased, thereby effectively reducing the risk of accumulation. This improvement significantly improves the speed and stability of the mold slag entering the feeding section 53 from the bend 52, ensuring the continuous and efficient operation of the system.

[0080] The pusher blade 73 at the other end of the rotating rod 71 is responsible for timely discharging the excess protective slag from the end of the feeding part 53. The pusher blade 73 conveys the residual protective slag to the outside of the discharge hole 55 through the rotation action, preventing the bottom of the feeding part 53 from accumulating too much protective slag and affecting the normal operation of the conveying assembly 7. In addition, the pusher blade 73 also plays a role in assisting the distribution of protective slag, evenly distributing the discharged protective slag to the uncovered area, further improving the comprehensiveness and uniformity of the protective slag delivery.

[0081] like Figure 6 As shown, the design of the conveying assembly 7 not only solves the problem of accumulation in the curved portion 52 through the synergistic effect of the rotating rod 71, the spiral blade 72 and the pusher blade 73, but also optimizes the conveying path of the protective slag, ensuring that it passes through the entire feeding pipe 5 quickly and smoothly. The addition of the pusher blade 73 further improves the distribution effect of the protective slag and reduces the obstacles in the operation of the equipment. The overall design not only improves the efficiency of the protective slag delivery, but also enhances the stability of the system, providing strong technical support for the efficient operation of the continuous casting process.

[0082] During the working process of the present invention, the control rod 2 is externally connected to the external power source, and the external power source can be a cylinder. The external power source is responsible for driving the control rod 2 to move forward and backward. When it is necessary to put the protective slag, the feeding mechanism 1 is pushed to both sides of the water injection port. After the putting is completed, the feeding mechanism 1 is withdrawn;

[0083] The protective slag falls from the hopper 3 into the feeding cavity 12, and enters the feeding cavities 12 on both sides after being divided by the diverter block 13, and enters the feeding part 51 and the curved part 52 through the feeding channel 44, and enters the feeding part 53 driven by the conveying assembly 7, and is fed downward through the feeding port 54. The protective slag at the bottom of the feeding part 53 is driven by the pushing blades 73 and pushed out from the discharge hole 55;

[0084] During the process of feeding the protective slag, the micro motor 141 drives the rotating gear 142 to rotate, and the telescopic rack 43 meshing with it drives the telescopic block 41 to perform telescopic movement, so that the feeding pipe 5 installed on the side of the telescopic block 41 moves accordingly. Figure 7 As shown, when observed from above the area where the protective slag is required to be placed, the feeding pipe 5 moves up and down on both sides of the water injection port to achieve full coverage of the feeding area.

[0085] Various modifications to the present disclosure will be apparent to those of ordinary skill in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Therefore, the present disclosure is not limited to the examples and designs described herein, but should be given the widest scope consistent with the principles and novel features disclosed herein. Although one or more exemplary embodiments of the present disclosure have been described with reference to the accompanying drawings, it will be understood by those of ordinary skill in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the present disclosure as defined in the appended claims.

Claims

1. A device for automatically adding protective slag to a continuous casting crystallizer, comprising a feeding mechanism (1), a control rod (2), a hopper (3), a telescopic component (4), a feeding pipe (5), a driving motor (6) and a transmission component (7); The feeding mechanism (1) is arranged on the side of the water injection port of the continuous casting crystallizer, and the feeding mechanism (1) comprises a control component (14), and the control component (14) drives the telescopic component (4) to perform telescopic movement in the feeding mechanism (1); The control rod (2) is mounted on the side of the feeding mechanism (1), and the hopper (3) is mounted on the top of the feeding mechanism (1); The telescopic assembly (4) is installed inside the feeding mechanism (1), and the telescopic assembly (4) comprises a telescopic block (41) and a telescopic rack (43). The telescopic rack (43) drives the telescopic block (41) to move under the control of the control assembly (14); The feeding pipe (5) is installed below the telescopic assembly (4), and the driving motor (6) is installed on the feeding pipe (5); The conveying assembly (7) is installed inside the feeding pipe (5), and the conveying assembly (7) comprises a spiral blade (72). The spiral blade (72) is driven by the driving motor (6) to rotate and transport the mold slag to one end of the feeding pipe (5); The feeding mechanism (1) further comprises a feeding frame (11), a feeding cavity (12), a diverter block (13) and a limiting groove (15); The feeding frame (11) is configured as the main body of the feeding mechanism (1), the feeding cavity (12) is provided inside the feeding frame (11), the control assembly (14) is mounted on the upper portion of the feeding frame (11), the diverter block (13) is mounted in the middle of the feeding cavity (12), and the limiting groove (15) is provided on the inner surface of the feeding frame (11); The feeding frame (11) is configured to be V-shaped, and the included angle between the axes on both sides of the feeding frame (11) and the central axis of the hopper (3) is configured to be 45°; The control component (14) comprises a micro motor (141) and a rotating gear (142); The micro motor (141) is installed inside the feeding frame (11), and the rotating gear (142) is installed at the output end of the micro motor (141); The telescopic assembly (4) further comprises a limit bar (42) and a material conveying channel (44); The telescopic block (41) is installed inside the feeding mechanism (1), the limit strip (42) is installed on two side surfaces of the telescopic block (41), the telescopic rack (43) is arranged on the top of the telescopic block (41), and the feeding channel (44) is opened inside the telescopic block (41); The cross section of the material delivery channel (44) is arranged to be a trapezoid, and the diameter of the material delivery channel (44) is arranged to gradually decrease along the direction from the feeding mechanism (1) to the feeding pipe (5); The feeding pipe (5) comprises a feeding portion (51), a bending portion (52) and a feeding portion (53); The feeding pipe (5) is configured to be L-shaped, wherein the shorter straight portion close to the telescopic assembly (4) is configured as a feeding portion (51), the longer straight portion is configured as a feeding portion (53), and the portion connecting the two is configured as a curved portion (52); The feeding pipe (5) further comprises a feeding port (54) and a discharge hole (55); The feeding ports (54) are arranged at intervals below the feeding portion (53), the discharge holes (55) are arranged outside the feeding portion (53), and the discharge holes (55) are arranged in a circular array; The conveying assembly (7) further comprises a rotating rod (71) and a pushing fan blade (73); The rotating rod (71) is installed in the middle of the feeding part (53), one end of the rotating rod (71) passes through the curved part (52) and is connected to the output end of the driving motor (6), the spiral blade (72) is installed on the outer surface of the rotating rod (71), and the pushing blade (73) is installed on the other end of the rotating rod (71); The radius of the spiral blade (72) located at the curved portion (52) is gradually increased in the direction of the pushing blade (73), and the radius of the spiral blade (72) at the remaining portion is set to the inner diameter of the feeding portion (53).

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