Casting mold and method for casting

Abstract

The present application belongs to the technical field of stream inoculation, in particular to a pre-furnace stream inoculation device and an inoculation method thereof, comprising a mounting frame, one side end face of the mounting frame is fixedly connected with two connecting columns, one end of the connecting column away from the mounting frame is fixedly connected with a mounting plate, the mounting plate is provided with mounting holes at four corners, comprising an adjustable hopper structure; the adjustable hopper structure comprises four adjusting rods which are uniformly distributed along the circumference of the mounting frame and are slidably connected with the mounting frame, one end of the adjusting rod close to the center of the mounting frame is fixedly connected with an arc-shaped plate, and the adjacent arc-shaped plates are jointly fixedly connected with elastic cloth. The present application utilizes the adjustable hopper structure, can be matched with different caliber pouring cups conveniently, ensures that the inoculant is accurately injected into the pouring cup, neither wastes nor meets the requirements of the discharging speed under different pouring flow, without replacing the hopper, can quickly adapt to various pouring cups, and is convenient to operate and has strong applicability.

Description

Technical Field

[0001] This invention belongs to the field of in-flow inoculation technology, specifically the in-flow inoculation device and inoculation method in front of the furnace. Background Technology

[0002] In-furnace inoculation is a process for inoculating molten iron during the casting process. During the flow of molten iron from the ladle into the pouring cup or directly into the mold, granular or powdered inoculant is continuously and dispersedly added to the molten iron stream, allowing the inoculant to mix and dissolve with the molten iron in a very short time before entering the mold cavity.

[0003] Patent CN217858696U discloses a ladle inoculation device for furnace pre-casting, comprising a hopper, a first discharge pipe, and a tilting assembly. The first discharge pipe is located at the outlet end of the hopper, and a second discharge pipe is located at the bottom of the first discharge pipe. A ladle is located below the discharge port of the second discharge pipe. The tilting assembly includes a shaft, an auxiliary rotating frame, and a tilting plate. The shaft passes through the first discharge pipe and extends out of the first discharge pipe at both ends. Auxiliary rotating frames are located at both ends of the shaft extending out of the first discharge pipe. The tilting plate is located within the first discharge pipe, with its bottom surface tangential to the shaft. This patent utilizes the auxiliary rotating frame to drive the shaft's rotation, combined with an adjustment unit and a counterweight, to accurately control the amount of inoculant added. This solves the problems of insufficient or excessive inoculation, and also addresses the issue of uneven inoculant addition leading to product defects or even scrap.

[0004] However, the above technical solutions still have the following shortcomings in practical applications:

[0005] By adding the inoculant to the hopper, the control switch is manually or automatically triggered at the start of pouring, so that the device starts synchronously with the flow of molten iron. The inoculant is continuously and evenly sprayed / flowed into the pouring cup through the delivery pipeline or by gravity. Throughout the process of molten iron entering the mold, the inoculant is continuously added with the flow of molten iron at a precise rate, achieving instantaneous inoculation.

[0006] However, existing hoppers have fixed opening specifications, with their outlet size designed for a specific pouring cup diameter. When pouring cups of different diameters are used due to changes in casting type or pouring process, the fixed opening is difficult to match. If the opening is too large, the inoculant easily spills outside the pouring cup, causing waste and contamination; if the opening is too small, it limits the feeding speed, making it difficult to meet the needs of high-flow-rate pouring. Therefore, operators need to replace the entire hopper to adapt to different pouring cups, a cumbersome and inefficient process. Summary of the Invention

[0007] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, the present invention proposes a furnace-front inoculation device and an inoculation method thereof.

[0008] The technical solution adopted by the present invention to solve its technical problem is: a furnace-front inoculation device, including a mounting frame, two connecting columns are fixedly connected to one end face of the mounting frame, a mounting plate is fixedly connected to the end of the connecting column away from the mounting frame, and mounting holes are provided at the four corners of the mounting plate, including an adjustable hopper structure;

[0009] The adjustable hopper structure includes four adjusting rods that are evenly distributed around the circumference of the mounting frame and slidably connected thereto. An arc-shaped plate is fixedly connected to one end of each adjusting rod near the center of the mounting frame. An elastic cloth is fixedly connected between adjacent arc-shaped plates. The four arc-shaped plates and the four elastic cloths cooperate to form a funnel-shaped structure for placing the inoculant. The inoculant is put in through the top of the funnel-shaped structure, slides down its inner wall, and flows out through the bottom opening of the funnel-shaped structure.

[0010] Preferably, one end of the adjusting rod is rotatably connected to a connecting rod, and the ends of multiple connecting rods away from the adjusting rod are rotatably connected to a lifting ring.

[0011] Preferably, one end of the adjusting rod on one side is fixedly connected to a connecting block, and one side of the mounting frame is fixedly connected to an electric push rod, with the piston end of the electric push rod fixedly connected to one end of the connecting block.

[0012] Preferably, it includes a specification-adaptive anti-jamming component;

[0013] The specification-adaptive anti-jamming component includes a support column fixedly connected to one side of the upper surface of the mounting frame. One end of the support column is rotatably connected to a rotating shaft. A screw conveyor blade is fixedly sleeved on the rotating shaft. A rotating plate is fixedly sleeved on the upper end of the rotating shaft. Two sliding rods are slidably inserted through one end of the rotating plate in a transverse direction. A scraper rod is fixedly connected to one end of each sliding rod.

[0014] Preferably, a second motor is fixedly connected to one side of the upper end face of the support column, and the output end of the second motor is fixedly connected to one end of the rotating shaft.

[0015] Preferably, a spring is sleeved on one side of the slide rod, one end of the spring is fixedly connected to one end of the scraper rod, and the other end is fixedly connected to one end of the rotating plate.

[0016] Preferably, the arc-shaped plate is provided with a cutting component;

[0017] The cutting assembly includes multiple blades that are vertically distributed and slidably pass through an arc-shaped plate, and a reciprocating plate is fixedly connected to one side of the multiple blades.

[0018] Preferably, a damper is fixedly connected to one side of the arc-shaped plate, the piston end of the damper is fixedly connected to one side surface of the reciprocating plate, a second spring is sleeved on the damper, one end of the second spring is fixedly connected to one side surface of the reciprocating plate, and the other end is fixedly connected to one side surface of the arc-shaped plate, an eccentric wheel is rotatably connected to one side of the outer wall of the arc-shaped plate, the eccentric wheel is in contact with one side surface of the reciprocating plate, and a first motor is fixedly connected to one side of the outer wall of the arc-shaped plate, the output end of the first motor is fixedly connected to the middle of the eccentric wheel.

[0019] The in-furnace flow-inoculation method includes the following specific steps:

[0020] S1. Install the entire device in the designated position by the mounting plate on the connecting column. According to actual needs, drive the adjusting rod on one side to slide on the mounting frame. Under the transmission cooperation of the connecting rod and the lifting ring, multiple adjusting rods can slide at the same time, so that multiple arc plates move closer to or further away from the center of the mounting frame at the same time. During the movement of the arc plates, the elastic cloth will deform, adjusting the size of the funnel-shaped structure composed of multiple arc plates and elastic cloth.

[0021] S2. At the start of pouring, the inoculant is added through the opening at the top of the funnel-shaped structure. The inoculant flows into the pouring cup through the funnel-shaped structure and by gravity. Since the size of the funnel-shaped structure can be flexibly adjusted, it can be easily matched with pouring cups of different diameters, ensuring that all the inoculant is accurately injected into the pouring cup.

[0022] S3. When the size of the funnel-shaped structure changes, the scraper will be in close contact with the surface of the arc plate or elastic cloth under the action of the slide bar and spring. During pouring, the rotating shaft will rotate, which will make the scraper move in a circle along the inner cavity of the funnel-shaped structure. The scraper will scrape off the inoculant adhering to the surface of the arc plate and elastic cloth. Furthermore, the inoculant can be transported downwards under the rotation of the auger blades.

[0023] S4. Drive the eccentric wheel to rotate. Because the reciprocating plate is kept in close contact with the eccentric wheel under the action of spring one, and the proximal end and distal end of the eccentric wheel alternately contact the reciprocating plate, the reciprocating plate and multiple blades form a transverse reciprocating sliding. When the blades extend into the inner cavity of the funnel-shaped structure, they will have a cutting effect on the inoculant inside, thereby dispersing the agglomerated inoculant and restoring it to a normal granular form before entering the molten iron.

[0024] The beneficial effects of this invention are as follows:

[0025] 1. The furnace-front inoculant device and its inoculant method described in this invention utilize an adjustable hopper structure to adjust the size of a funnel-shaped structure composed of multiple arc-shaped plates and elastic cloth. At the start of pouring, the inoculant is added through the opening at the top of the funnel-shaped structure. The inoculant flows through the funnel-shaped structure and into the pouring cup by gravity. Furthermore, because the size of the funnel-shaped structure is flexibly adjustable, it can easily match pouring cups of different diameters, ensuring that all the inoculant is accurately injected into the pouring cup, preventing spillage and waste, and meeting the material feeding speed requirements under different pouring flow rates. It can quickly adapt to various pouring cups without changing the hopper, making it convenient to operate and highly applicable.

[0026] 2. The furnace-front inoculation device and its inoculation method described in this invention utilize a specification-adaptive anti-jamming component. With the coordinated action of the scraper and auger blades, the funnel-shaped structure can be adjusted in size to fit different pouring cups. This effectively prevents local accumulation and blockage of the inoculant at the outlet, and simultaneously removes adhering substances from the surface of the arc plate and elastic cloth, ensuring smooth and continuous outflow of the inoculant and guaranteeing the accuracy and stability of the actual addition amount.

[0027] 3. The furnace-front inoculation device and its inoculation method described in this invention utilize a cutting assembly. By driving an eccentric wheel to rotate, the reciprocating plate remains in close contact with the eccentric wheel under the action of a spring. Furthermore, the proximal and distal ends of the eccentric wheel alternately contact the reciprocating plate. Therefore, the reciprocating plate and multiple blades form a transverse reciprocating sliding motion. When the blades extend into the funnel-shaped structure's inner cavity, they cut the inoculator inside, thereby dispersing the agglomerated inoculator and restoring it to a normal granular form before it enters the molten iron. This ensures rapid and uniform dissolution and diffusion, effectively avoiding uneven local inoculation or unmelted inclusions caused by agglomeration. This significantly improves the accuracy of the inoculation process and the consistency of the final microstructure and properties of the casting. Attached Figure Description

[0028] The invention will now be further described with reference to the accompanying drawings.

[0029] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0030] Figure 2 yes Figure 1 Enlarged view of a portion of point A in the middle;

[0031] Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0032] Figure 4 yes Figure 3 Enlarged view of a section at point B in the middle;

[0033] Figure 5 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 3 ;

[0034] Figure 6 yes Figure 5 Enlarged view of a section at point C.

[0035] In the diagram: 1. Mounting frame; 2. Connecting column; 3. Lifting ring; 4. Elastic cloth; 5. Arc plate; 6. Reciprocating plate; 7. Electric actuator; 8. Connecting rod; 9. Adjusting rod; 10. Slide rod; 11. Spring 1; 12. Blade; 13. Spring 2; 14. Damper; 15. Eccentric wheel; 16. Motor 1; 17. Scraper; 18. Mounting plate; 19. Connecting block; 20. Rotating plate; 21. Support column; 22. Rotating shaft; 23. Motor 2; 24. Screwdriver blade. Detailed Implementation

[0036] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Please refer to Figures 1-6 The present invention provides a technical solution: a furnace-front inoculation device, including a mounting frame 1, two connecting columns 2 are fixedly connected to one end face of the mounting frame 1, and a mounting plate 18 is fixedly connected to the end of the connecting column 2 away from the mounting frame 1. The mounting plate 18 is provided with mounting holes at all four corners. The device is characterized by including an adjustable hopper structure.

[0038] The adjustable hopper structure includes four adjusting rods 9 that are evenly distributed around the mounting frame 1 and slidably connected thereto. An arc-shaped plate 5 is fixedly connected to one end of the adjusting rod 9 near the center of the mounting frame 1. An elastic cloth 4 is fixedly connected between adjacent arc-shaped plates 5. The four arc-shaped plates 5 and the four elastic cloths 4 cooperate to form a funnel-shaped structure for placing the inoculant. The inoculant is put in through the top of the funnel-shaped structure, slides down its inner wall, and flows out through the bottom opening of the funnel-shaped structure.

[0039] In this embodiment, as Figure 1 and Figure 2 As shown, one end of the adjusting rod 9 is rotatably connected to a connecting rod 8, and the ends of multiple connecting rods 8 away from the adjusting rod 9 are rotatably connected to a lifting ring 3.

[0040] One end of the adjusting rod 9 is fixedly connected to a connecting block 19, and one side of the mounting frame 1 is fixedly connected to an electric push rod 7. The piston end of the electric push rod 7 is fixedly connected to one end of the connecting block 19.

[0041] Specifically, in existing technologies, an inoculant is added to the hopper. At the start of pouring, a control switch is manually or automatically triggered to start the device synchronously with the flow of molten iron. The inoculant is continuously and evenly sprayed / flowed into the pouring cup through the delivery pipeline or by gravity. Throughout the process of molten iron entering the mold, the inoculant is continuously added at a precise rate with the flow of molten iron, achieving instantaneous inoculation.

[0042] However, existing hoppers have fixed opening specifications, with their outlet size designed for a specific pouring cup diameter. When pouring cups of different diameters are used due to changes in casting type or pouring process, the fixed opening is difficult to match. If the opening is too large, the inoculant easily spills outside the pouring cup, causing waste and contamination; if the opening is too small, it limits the feeding speed, making it difficult to meet the needs of high-flow-rate pouring. Therefore, operators need to replace the entire hopper to adapt to different pouring cups, a cumbersome and inefficient process.

[0043] Therefore, in order to solve the above problems, the working principle of this embodiment is as follows:

[0044] The entire device is installed in the designated position via the mounting plate 18 on the connecting column 2. According to actual needs, the electric actuator 7 drives the adjusting rod 9 on one side to slide on the mounting frame 1. Under the transmission cooperation of the connecting rod 8 and the lifting ring 3, multiple adjusting rods 9 can slide simultaneously, so that multiple arc-shaped plates 5 move closer to or further away from the center of the mounting frame 1. During the movement of the arc-shaped plates 5, the elastic cloth 4 will deform, thereby adjusting the size of the funnel-shaped structure composed of multiple arc-shaped plates 5 and elastic cloth 4.

[0045] At the start of pouring, the inoculant is added through the opening at the top of the funnel-shaped structure. The inoculant flows through the funnel-shaped structure and into the pouring cup by gravity. Furthermore, since the size of the funnel-shaped structure can be flexibly adjusted, it can be easily matched with pouring cups of different diameters, ensuring that all the inoculant is accurately injected into the pouring cup, without spillage or waste, and meeting the material discharge speed requirements under different pouring flow rates. It can be quickly adapted to various pouring cups without changing the hopper, making it convenient to operate and highly applicable.

[0046] In this embodiment, as Figure 3 , Figure 5 , Figure 6 As shown, it includes a specification-adaptive anti-jamming component;

[0047] The specification-adaptive anti-jamming component includes a support column 21 fixedly connected to one side of the upper surface of the mounting frame 1. One end of the support column 21 is rotatably connected to a rotating shaft 22. A screw conveyor blade 24 is fixedly sleeved on the rotating shaft 22. A rotating plate 20 is fixedly sleeved on the upper end of the rotating shaft 22. Two sliding rods 10 are slidably inserted through one end of the rotating plate 20 in a transverse direction. A scraper rod 17 is fixedly connected to one end of each sliding rod 10.

[0048] A motor 23 is fixedly connected to one side of the upper end of the support column 21, and the output end of the motor 23 is fixedly connected to one end of the rotating shaft 22.

[0049] A spring 11 is fitted on one side of the slide bar 10. One end of the spring 11 is fixedly connected to one end of the scraper 17, and the other end is fixedly connected to one end of the rotating plate 20.

[0050] Specifically, in the above embodiments, although the funnel-shaped structure can accurately introduce the inoculant into the pouring cup, during actual outflow, the inoculant is prone to blockage or poor flow due to local accumulation. Furthermore, if the inoculant adheres to the surface of the curved plate 5 or the elastic cloth 4, it will also affect the accuracy of the actual amount added.

[0051] Therefore, in order to solve the above problems, the working principle of this embodiment is as follows:

[0052] When the dimensions of the funnel-shaped structure change, the scraper 17 will adhere tightly to the surface of the arc-shaped plate 5 or the elastic cloth 4 under the action of the slide bar 10 and the spring 11. During pouring, the motor 23 drives the rotating shaft 22 to rotate, which causes the scraper 17 to move in a circular motion along the inner cavity of the funnel-shaped structure. The scraper 17 will scrape off the inoculant adhering to the surface of the arc-shaped plate 5 and the elastic cloth 4. Furthermore, the rotation of the auger blade 24 can transport the inoculant downwards. Thus, with the coordinated action of the scraper 17 and the auger blade 24, the dimensions of the funnel-shaped structure can be adjusted to adapt to different pouring cups. This effectively prevents local accumulation and blockage of the inoculant at the outlet, and simultaneously removes the adhering substances on the surface of the arc-shaped plate 5 and the elastic cloth 4, ensuring a smooth and continuous flow of the inoculant and ensuring the accuracy and stability of the actual amount added.

[0053] In this embodiment, as Figure 2 and Figure 4 As shown, the arc-shaped plate 5 is equipped with a cutting assembly;

[0054] The cutting assembly includes multiple blades 12 that are vertically distributed and slidably pass through the arc-shaped plate 5, and a reciprocating plate 6 is fixedly connected to one side of the multiple blades 12.

[0055] A damper 14 is fixedly connected to one side of the arc plate 5. The piston end of the damper 14 is fixedly connected to one side surface of the reciprocating plate 6. A second spring 13 is sleeved on the damper 14. One end of the second spring 13 is fixedly connected to one side surface of the reciprocating plate 6, and the other end is fixedly connected to one side surface of the arc plate 5. An eccentric wheel 15 is rotatably connected to one side of the outer wall of the arc plate 5. The eccentric wheel 15 is in contact with one side surface of the reciprocating plate 6. A motor 16 is fixedly connected to one side of the outer wall of the arc plate 5. The output end of the motor 16 is fixedly connected to the middle of the eccentric wheel 15.

[0056] Specifically, in the above embodiments, although the scraper 17 and the auger blades 24 can work together to prevent the inoculant from accumulating and blocking at the outlet and adhering to the surfaces of the arc plate 5 and the elastic cloth 4, some of the inoculant may agglomerate due to moisture, improper storage, or compression. These agglomerates, after entering the molten iron, dissolve and diffuse at a much lower rate than normal particles, easily causing uneven local inoculation. They may even remain in the casting as inclusions due to incomplete melting, severely affecting the accuracy of the inoculation process and the final microstructure and properties of the casting.

[0057] Therefore, in order to solve the above problems, the working principle of this embodiment is as follows:

[0058] The eccentric wheel 15 is rotated by the motor 16. The reciprocating plate 6 is kept in close contact with the eccentric wheel 15 under the action of the spring 11, and the proximal and distal ends of the eccentric wheel 15 alternately contact the reciprocating plate 6. Therefore, the reciprocating plate 6 and multiple blades 12 form a transverse reciprocating sliding. When the blades 12 extend into the inner cavity of the funnel-shaped structure, they will cut the inoculant inside, thereby dispersing the agglomerated inoculant and restoring it to a normal granular form before entering the molten iron. This ensures that it can dissolve and diffuse quickly and evenly, effectively avoiding the problem of uneven local inoculation or unmelted inclusions caused by agglomeration, and significantly improving the accuracy of the inoculation process and the consistency of the final microstructure and properties of the casting.

[0059] The in-furnace flow-inoculation method includes the following specific steps:

[0060] S1. Install the entire device at the designated position by the mounting plate 18 on the connecting column 2. According to actual needs, drive the adjusting rod 9 on one side to slide on the mounting frame 1. Under the transmission cooperation of the connecting rod 8 and the lifting ring 3, multiple adjusting rods 9 can slide at the same time, so that multiple arc plates 5 move closer to or further away from the center of the mounting frame 1 at the same time. During the movement of the arc plates 5, the elastic cloth 4 will deform, adjusting the size of the funnel-shaped structure composed of multiple arc plates 5 and elastic cloth 4.

[0061] S2. At the start of pouring, the inoculant is added through the opening at the top of the funnel-shaped structure. The inoculant flows into the pouring cup through the funnel-shaped structure and by gravity. Since the size of the funnel-shaped structure can be flexibly adjusted, it can be easily matched with pouring cups of different diameters, ensuring that all the inoculant is accurately injected into the pouring cup.

[0062] S3. When the size of the funnel-shaped structure changes, the scraper 17 will be in close contact with the surface of the arc plate 5 or the elastic cloth 4 under the action of the slide bar 10 and the spring 11. During pouring, the rotating shaft 22 rotates, which will make the scraper 17 move in a circular motion along the inner cavity of the funnel-shaped structure. The scraper 17 will scrape off the inoculant adhering to the surface of the arc plate 5 and the elastic cloth 4. Furthermore, the inoculant can be transported downward under the rotation of the auger blade 24.

[0063] S4. Drive the eccentric wheel 15 to rotate. Because the reciprocating plate 6 is kept in close contact with the eccentric wheel 15 under the action of the spring 11, and the proximal end and distal end of the eccentric wheel 15 alternately contact the reciprocating plate 6, the reciprocating plate 6 and the multiple blades 12 form a transverse reciprocating sliding. When the blades 12 extend into the inner cavity of the funnel-shaped structure, they will have a cutting effect on the inoculant inside, thereby dispersing the agglomerated inoculant and restoring it to a normal granular form before entering the molten iron.

[0064] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A furnace-front inoculation device, comprising a mounting frame (1), wherein two connecting columns (2) are fixedly connected to one end face of the mounting frame (1), and a mounting plate (18) is fixedly connected to the end of the connecting column (2) away from the mounting frame (1), wherein mounting holes are provided at the four corners of the mounting plate (18), characterized in that: Includes an adjustable hopper structure; The adjustable hopper structure includes four adjusting rods (9) that are evenly distributed around the circumference of the mounting frame (1) and slidably connected thereto. An arc plate (5) is fixedly connected to one end of the adjusting rod (9) near the center of the mounting frame (1). An elastic cloth (4) is fixedly connected between adjacent arc plates (5). The four arc plates (5) and the four elastic cloths (4) cooperate with each other to form a funnel-shaped structure for placing the inoculant. The inoculant is put in through the top of the funnel-shaped structure, slides down its inner wall, and flows out through the bottom opening of the funnel-shaped structure.

2. The in-furnace inoculation device according to claim 1, characterized in that: One end of the adjusting rod (9) is rotatably connected to a connecting rod (8), and the ends of multiple connecting rods (8) away from the adjusting rod (9) are rotatably connected to a lifting ring (3).

3. The in-furnace inoculation device according to claim 2, characterized in that: One end of the adjusting rod (9) on one side is fixedly connected to a connecting block (19), and one side of the mounting frame (1) is fixedly connected to an electric push rod (7). The piston end of the electric push rod (7) is fixedly connected to one end of the connecting block (19).

4. The in-furnace inoculation device according to claim 3, characterized in that: Includes size-adaptive anti-jamming components; The specification-adaptive anti-jamming component includes a support column (21) fixedly connected to one side of the upper surface of the mounting frame (1). One end of the support column (21) is rotatably connected to a rotating shaft (22). A screw conveyor blade (24) is fixedly sleeved on the rotating shaft (22). A rotating plate (20) is fixedly sleeved on the upper end of the rotating shaft (22). Two sliding rods (10) are slidably inserted through one end of the rotating plate (20) in the transverse direction. A scraper rod (17) is fixedly connected to one end of the sliding rod (10).

5. The in-furnace inoculation device according to claim 4, characterized in that: A second motor (23) is fixedly connected to one side of the upper end face of the support column (21), and the output end of the second motor (23) is fixedly connected to one end of the rotating shaft (22).

6. The in-furnace inoculation device according to claim 5, characterized in that: A spring (11) is fitted on one side of the slide bar (10). One end of the spring (11) is fixedly connected to one end of the scraper (17), and the other end is fixedly connected to one end of the rotating plate (20).

7. The in-furnace inoculation device according to claim 1, characterized in that: The arc-shaped plate (5) is equipped with a cutting assembly; The cutting assembly includes multiple blades (12) that are vertically distributed and slidably pass through the arc plate (5), and a reciprocating plate (6) is fixedly connected to one side of the multiple blades (12).

8. The in-furnace inoculation device according to claim 7, characterized in that: A damper (14) is fixedly connected to one side of the arc plate (5). The piston end of the damper (14) is fixedly connected to one side surface of the reciprocating plate (6). A second spring (13) is sleeved on the damper (14). One end of the second spring (13) is fixedly connected to one side surface of the reciprocating plate (6), and the other end is fixedly connected to one side surface of the arc plate (5). An eccentric wheel (15) is rotatably connected to one side of the outer wall of the arc plate (5). The eccentric wheel (15) is in contact with one side surface of the reciprocating plate (6). A motor (16) is fixedly connected to one side of the outer wall of the arc plate (5). The output end of the motor (16) is fixedly connected to the middle of the eccentric wheel (15).

9. A furnace-front inoculation method, wherein inoculation is performed using the inoculation apparatus according to any one of claims 1-8, characterized in that, The specific steps include: S1. Install the entire device in the designated position by the mounting plate (18) on the connecting column (2). According to actual needs, drive the adjusting rod (9) on one side to slide on the mounting frame (1). Under the transmission cooperation of the connecting rod (8) and the lifting ring (3), multiple adjusting rods (9) can slide at the same time, so that multiple arc plates (5) move closer to or further away from the center of the mounting frame (1) at the same time. During the movement of the arc plate (5), the elastic cloth (4) will deform, adjusting the size of the funnel-shaped structure composed of multiple arc plates (5) and elastic cloth (4). S2. At the start of pouring, the inoculant is added through the opening at the top of the funnel-shaped structure. The inoculant flows into the pouring cup through the funnel-shaped structure and by gravity. Since the size of the funnel-shaped structure can be flexibly adjusted, it can be easily matched with pouring cups of different diameters, ensuring that all the inoculant is accurately injected into the pouring cup. S3. When the size of the funnel-shaped structure changes, the scraper (17) will be in close contact with the surface of the arc plate (5) or elastic cloth (4) under the action of the slide bar (10) and the spring (11). During the pouring, the rotating shaft (22) rotates, which will make the scraper (17) move in a circular motion along the inner cavity of the funnel-shaped structure. The scraper (17) will scrape off the inoculant adhering to the surface of the arc plate (5) and elastic cloth (4). Furthermore, the inoculant can be transported downward under the rotation of the auger blade (24). S4. Drive the eccentric wheel (15) to rotate. As the reciprocating plate (6) is in close contact with the eccentric wheel (15) under the action of the spring (11), and the proximal end and distal end of the eccentric wheel (15) alternately contact the reciprocating plate (6), the reciprocating plate (6) and multiple blades (12) form a transverse reciprocating sliding. When the blades (12) extend into the inner cavity of the funnel-shaped structure, they will have a cutting effect on the inoculant inside, thereby dispersing the agglomerated inoculant and restoring it to a normal particle shape before entering the molten iron.

Images