Electromagnetic roll-over stirring device

Abstract

The present application relates to the technical field of metal processing, especially to an electromagnetic rolling stirring device, comprising an inclined support seat, an electromagnetic inductor fixedly installed on the inclined support seat, a feed inlet assembly fixedly installed on the top of the electromagnetic inductor and butted with a furnace body, the contact surface of the feed inlet assembly and the inclined surface of the inclined support seat being parallel to each other, a charging opening being formed in the top of the feed inlet assembly, and a top cover being arranged on the top of the charging opening; the present application is suitable for the input of non-ferrous metal scraps, the input metal scraps are pressed into the metal melt by the electromagnetic rolling to be soaked and melted, the recovery rate of the non-ferrous metal scraps is improved, and the production cost is reduced; the device can be directly arranged in a new furnace construction, a window is cut on the furnace wall of an old furnace during the old furnace reconstruction, and the opening of the feed inlet assembly is cast together with the furnace body, which has a more favorable effect on the occasions where the space and the structure of the furnace are limited, the bottom-mounted electromagnetic inductor cannot be installed, but the electromagnetic inductor needs to be increased.

Description

Technical Field

[0001] This invention relates to the field of metal processing technology, and in particular to an electromagnetic turning and stirring device. Background Technology

[0002] Electromagnetic stirring of molten metal induces eddy currents through an alternating magnetic field, driving the directional flow of the melt. It is a key technology for non-contact melt purification and homogenization. It significantly enhances mass and heat transfer, promotes uniform composition and temperature, effectively refines grains, reduces segregation, and removes inclusions, thereby improving the density and mechanical properties of the solidification structure of the cast billet.

[0003] As factories become increasingly automated, the demand for electromagnetic sensors in the non-ferrous metals industry is growing. Many existing companies need to add electromagnetic sensors to their old furnaces, but limitations in foundation and furnace type make it difficult to increase the number of sensors. Existing mechanical agitators use graphite stirring paddles immersed in molten metal for stirring. These paddles are easily damaged by the molten metal at high temperatures, requiring frequent maintenance and causing contamination of the molten metal. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an electromagnetic tumbling and stirring device.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: an electromagnetic turning and stirring device, including an inclined support base, an electromagnetic inductor fixedly installed on the inclined support base, a feed port assembly that is connected to the furnace body fixedly installed on the top of the electromagnetic inductor, the contact surface between the feed port assembly and the electromagnetic inductor being parallel to the inclined surface of the inclined support base, a feeding port being opened on the top of the feeding port assembly, and a top cover with different functions being provided on the top of the feeding port.

[0006] The electromagnetic inductor includes an outer casing, an iron core, and a coil. A cooling pipe for cooling the coil is fixedly installed on the electromagnetic inductor. Multiple universal wheels with locking function are fixedly installed at the bottom of the inclined support. The feed port assembly is made of irregular refractory material.

[0007] The feed inlet assembly includes a refractory component and a feed inlet steel shell. The refractory component is located inside the feed inlet steel shell and is equipped with a mating interface for easy docking with the furnace window. The feed inlet steel shell can be welded or bolted to the outer steel shell of the furnace, making the feed inlet assembly and the furnace an integral unit.

[0008] The feed inlet assembly includes a refractory component and a feed inlet steel shell. The refractory component is located inside the feed inlet steel shell. An assembly connected to the electromagnetic sensor is installed on the tilt support seat of the electromagnetic sensor. The assembly is connected and fixed with bolts and quick connectors. After the feed inlet assembly and the electromagnetic sensor are installed in place, the tilt support seat can be quickly detached and remains fixed in its original position.

[0009] Preferably, the electromagnetic induction coil of the electromagnetic induction sensor can be fixed on the salient pole or wound around the main magnetic flux; the electromagnetic induction coil is a hollow metal tube and is cooled by water through internal insulation; it can also be a solid conductor and cooled by forced air cooling.

[0010] An air inlet pipe is fixedly inserted into the top of the feed inlet assembly. The bottom end of the air inlet pipe is located inside the lower part of the feed inlet assembly. A pulse electromagnetic coil is fixedly installed on the air inlet pipe, and the pulse electromagnetic coil is located at the top of the feed inlet assembly.

[0011] A circular cylinder is fixedly inserted into one side of the feed inlet assembly. A first housing and a second housing are fixedly connected inside the circular cylinder. An annular screen is fixedly connected between the first housing and the second housing. A drain trough is opened at the bottom of the circular cylinder. The drain trough is located below the annular screen and inside the feed inlet assembly. A sealing cap is threadedly connected to the open end of the circular cylinder outside the feed inlet assembly.

[0012] A vertical collar is fixedly connected to the top of the first housing. The top end of the vertical collar passes through the top of the cylindrical tube and extends into the inside of the feed inlet assembly. A collection housing is slidably connected inside the feed inlet assembly. One end of the collection housing is fixedly connected to an L-shaped connecting ring. The bottom end of the L-shaped connecting ring is slidably connected inside the vertical collar. Two floating blocks are fixedly connected to the collection housing. The interior of the floating blocks is a hollow structure.

[0013] Preferably, a rotating shaft is rotatably connected between the first housing and the second housing. One end of the rotating shaft passes through the cylindrical tube and extends into the feed inlet assembly, where a rotating fan is fixedly connected. A spiral conveying blade is fixedly connected to the surface of the rotating shaft. The spiral conveying blade rotates and fits against the inner wall of the annular screen. A guide groove is provided on the second housing. The vertical collar, collecting housing, L-shaped connecting ring, floating block, and rotating fan are all made of silicon nitride.

[0014] Preferably, an inlet pipe is fixedly inserted into the feed port assembly, one end of the inlet pipe extends to the bottom of the drain tank and is fixedly installed with an electronically controlled nozzle, and an inlet control assembly is provided on the inlet pipe.

[0015] Preferably, the liquid inlet control component includes a linkage shaft, which is rotatably connected to the axis of the sealing cover. A linkage component is provided between the linkage shaft and the rotating shaft. A rotating ring is fixedly connected to the end of the linkage shaft away from the cylindrical cylinder. A speed detector is fixedly installed on the sealing cover. A reflective block is fixedly connected to the surface of the rotating ring. The detection end of the speed detector is positioned opposite to the reflective block.

[0016] Preferably, the linkage component includes a first limiting ring and a second limiting ring. The first limiting ring is fixedly connected to one end of the rotating shaft, and the second limiting ring is fixedly connected to one end of the linkage shaft. The first limiting ring and the second limiting ring are in contact with each other. Two positioning holes are opened on one side of the first limiting ring along the circumferential direction, and two positioning pins are fixedly connected on one side of the second limiting ring along the circumferential direction. The two positioning pins are respectively inserted into the corresponding positioning holes.

[0017] Preferably, a placement housing is fixedly connected to the sealing cover. The placement housing is located inside the cylindrical tube. One end of the placement housing is connected to the guide trough. A guide hopper is fixedly connected inside the placement housing. The internal space of the guide hopper gradually decreases along the direction of the sealing cover.

[0018] Preferably, a movable baffle is provided inside the guide hopper near the sealing cover. A sliding strip is fixedly connected to the movable baffle. One end of the sliding strip passes through the sealing cover and extends to the bottom of the rotating ring, where an arc-shaped pin is fixedly connected. An inclined ring groove is opened on the surface of the rotating ring, and the arc end of the arc-shaped pin is located inside the inclined ring groove.

[0019] Preferably, inclined strips are fixedly connected to both the upper and lower sides of the opening end of the collection shell, and the two inclined strips are inclined outward on the side away from the collection shell.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. This invention forms a modular product, which facilitates the installation of new equipment and the modification of old furnaces. By adding an electromagnetic tumbling and stirring device to the original smelting furnace, the molten metal in the furnace can move in a straight line along the inclined surface of the irregular refractory part of the charging port. After colliding with the furnace wall, the molten metal achieves a top-to-bottom tumbling movement, which rolls the input non-ferrous metal recycling material into the high-temperature molten metal, realizes immersion melting, saves energy, reduces burn-off, and increases the utilization rate of non-ferrous metal recycling material.

[0022] 2. This invention utilizes the rising of argon gas in molten metal to attract denser impurities to the surface. Through the swirling flow of the molten metal and the suspension of the collection shell at the surface, the collected impurities are collected, filtered, and screened. This reduces the difficulty of impurity screening, increases the concentration of impurity filtration, reduces impurity residue during the stirring process of the molten metal, and improves the purity of the stirred molten metal.

[0023] 3. Connect the hydraulically controlled liquid covering agent pipeline to the inlet pipe, and control the discharge volume of the electronically controlled nozzle through the liquid inlet control component. When the filtered molten metal flows through the bottom of the discharge tank, the electronically controlled nozzle sprays out the liquid covering agent and mixes it with the molten metal again. This prevents secondary oxidation of the molten metal during the process of entering the holding furnace or casting machine and reduces the loss of molten metal during the processing.

[0024] 4. Each time the rotating ring rotates once, the detection end of the speed detector performs a reflective detection on the reflective block on the surface of the rotating ring. When the speed detector detects the reflective block, the controller connected to the speed detector controls the electronically controlled nozzle to spray a fixed amount of liquid covering agent. This allows the sprayed liquid covering agent to come into contact with and mix with the filtered molten metal. The rotation speed of the rotating ring is determined by the flow rate of the molten metal in the feed inlet assembly. This allows for dynamic adjustment of the frequency of liquid covering agent addition based on the flow and filtration speed of the molten metal, improving the utilization rate of the liquid covering agent and reducing waste. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the first structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the electromagnetic sensor structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the first mating structure of the electromagnetic sensor of the present invention;

[0028] Figure 4 This is a schematic diagram of the second mating structure of the electromagnetic sensor of the present invention;

[0029] Figure 5 This is a schematic diagram of the second structure of the present invention;

[0030] Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the structure at point A in the diagram;

[0031] Figure 7 This is a cross-sectional structural diagram of the present invention;

[0032] Figure 8 For the present invention Figure 7 Enlarged schematic diagram of the structure at point B in the diagram;

[0033] Figure 9 This is a schematic diagram of the first mating structure of the cylindrical tube, sealing cap, and collecting shell of the present invention;

[0034] Figure 10 For the present invention Figure 9 Enlarged schematic diagram of the structure at point C;

[0035] Figure 11 This is a schematic diagram of the second mating structure of the cylindrical cylinder, sealing cap, and collecting shell of the present invention;

[0036] Figure 12 This is a schematic diagram of the mating structure of the cylindrical cylinder and the sealing cap of the present invention (the cylindrical cylinder has been cut out).

[0037] Figure 13This is a schematic diagram of the mating structure of the sealing cap and the housing of the present invention;

[0038] Figure 14 This is an exploded view of the assembly structure of the housing and the guide hopper of the present invention;

[0039] Figure 15 This is a schematic diagram of the assembly structure of the first housing, the second housing, and the annular screen of the present invention;

[0040] Figure 16 This is an exploded view of the structure of the guide hopper and movable baffle of the present invention;

[0041] Figure 17 This is a schematic diagram of the connection and installation of the structure of the present invention with the smelting furnace (the arrow in the figure indicates the direction of the swirling flow of the molten metal).

[0042] In the diagram: 1. Inclined support base; 2. Electromagnetic inductor; 201. Outer casing; 202. Iron core; 203. Coil; 3. Feed inlet assembly; 301. Refractory component; 302. Feed inlet steel shell; 4. Feed port; 5. Top cover; 6. Air inlet pipe; 7. Pulse electromagnetic coil; 8. Circular cylinder; 9. First housing; 10. Second housing; 11. Annular screen; 12. Drainage trough; 13. Sealing cover; 14. Vertical collar; 15. Collection housing; 16. L-shaped connecting ring; 17. Floating block; 18. 19. Rotating shaft; 20. Rotating fan; 21. Spiral conveyor blade; 22. Guide trough; 23. Liquid inlet pipe; 24. Electrically controlled nozzle; 25. Linkage shaft; 26. Rotating ring; 27. Speed ​​detector; 28. Reflector block; 29. ​​First limit ring; 30. Second limit ring; 31. Positioning hole; 32. Positioning pin; 33. Housing; 34. Guide hopper; 35. Movable baffle; 36. Sliding bar; 37. Arc pin; 38. Inclined ring groove; 39. Inclined bar; 40. Cooling pipe; 41. Casters. Detailed Implementation

[0043] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0044] like Figures 1 to 17 The electromagnetic tumbling and stirring device shown includes an inclined support base 1, an electromagnetic sensor 2 is fixedly installed on the inclined support base 1, a feed port assembly 3 that is connected to the furnace body is fixedly installed on the top of the electromagnetic sensor 2, the contact surface between the feed port assembly 3 and the electromagnetic sensor 2 is parallel to the inclined surface of the inclined support base 1, a feeding port 4 is opened on the top of the feeding port assembly 3, and a top cover 5 is provided on the top of the feeding port 4.

[0045] The electromagnetic inductor 2 consists of an outer cover 201, an iron core 202, and a coil 203. A cooling pipe 39 is fixedly installed on the electromagnetic inductor 2. Multiple universal wheels 40 with locking function are fixedly installed at the bottom of the inclined support base 1. The feed port assembly 3 is made of shaped refractory material.

[0046] The feed inlet assembly 3 includes a refractory component 301 and a feed inlet steel shell 302. The refractory component 301 is located inside the feed inlet steel shell 302. The refractory component 301 is provided with a mating interface for easy docking with the window of the smelting furnace. The feed inlet steel shell 302 can be welded or bolted to the outer steel shell of the smelting furnace, so that the feed inlet assembly 3 and the smelting furnace become one unit.

[0047] The inclined support base 1 of the electromagnetic sensor 2 is provided with an assembly that connects to the electromagnetic sensor 2. The assembly is connected and fixed with bolts and quick connectors. After the feed port assembly 3 and the electromagnetic sensor 2 are installed in place, the inclined support base 1 can be quickly detached and remains fixed in the original position.

[0048] like Figure 4 and Figure 5 As shown, the electromagnetic sensor 2 consists of an outer cover 201, an iron core 202, and a coil 203. The installation methods of the iron core 202 and the coil 203 can be, but are not limited to, the two shown in the figure. The fixing method between the electromagnetic sensor 2 and the inclined support 1 is also not limited to the method shown in the figure.

[0049] The feed inlet assembly 3 includes a refractory component 301 and a feed inlet steel shell 302. The refractory component 301 is used to contact the high-temperature molten metal in the furnace, and the feed inlet steel shell 302 is located on the outside to support the refractory component 301.

[0050] After the side opening of the feed inlet assembly 3 is connected and installed with the heating furnace body, the aluminum blocks and scraps to be recycled are added into the feed inlet assembly 3 through the feed port 4. The furnace body heats the metal to a molten state, and the electromagnetic inductor 2 is activated. The electromagnetic inductor 2 generates an alternating magnetic field, which interacts with the molten metal in the furnace to generate a Lorentz force. This force drives the high-temperature molten metal to move. Part of the molten metal moves downward, and the other part impacts the furnace wall, thereby achieving the function of tumbling and stirring. The electromagnetic force generated by the operation of the electromagnetic inductor 2 drives the molten metal inside the feed inlet assembly 3 to circulate in one direction, so that the molten metal is tumbled and stirred inside the feed inlet assembly 3.

[0051] The entire device is fixed on the inclined support base 1, which facilitates docking with the furnace and thus enables the renovation of old furnaces. When building a new furnace, the feed port component 3 can be integrated with the furnace. The inclined support base 1 can then push the electromagnetic inductor 2 to the working position and fix it in place. Multiple casters 40 at the bottom of the inclined support base 1 enable multi-furnace operation. The coolant inside the cooling pipe 39 cools the coil inside the electromagnetic inductor 2, preventing overheating during operation. This device is a complete set that can be used for the renovation of old furnaces or directly installed in the construction of new furnaces. When renovating an old furnace, a window is cut into the furnace wall, and this device is docked with the window to repair the gap. Alternatively, the refractory components inside the device can be directly cast into the furnace body. This device is particularly advantageous for situations where space and furnace structure are limited, making it impossible to install a bottom-mounted electromagnetic inductor but an additional electromagnetic inductor is needed. The device involved in this invention has a simple structure, occupies little space, and can be installed by docking the device with a window cut into the furnace wall.

[0052] As a further embodiment of the present invention, the electromagnetic induction coil of the electromagnetic induction sensor 2 can be fixed on the salient pole or wound on the main magnetic flux; the electromagnetic induction coil is a hollow metal tube and is cooled by water through internal insulation; it can also be a solid conductor and cooled by forced air cooling.

[0053] An air inlet pipe 6 is fixedly inserted into the top of the feed inlet assembly 3 (e.g., Figure 1 and Figure 4 As shown), the bottom end of the air inlet pipe 6 is located below the inside of the feed inlet assembly 3. A pulse electromagnetic coil 7 is fixedly installed on the air inlet pipe 6, and the pulse electromagnetic coil 7 is located at the top of the feed inlet assembly 3.

[0054] A circular cylinder 8 is fixedly inserted into one side of the feed inlet assembly 3. A first housing 9 and a second housing 10 are fixedly connected inside the circular cylinder 8. An annular screen 11 is fixedly connected between the first housing 9 and the second housing 10. A drainage groove 12 is provided at the bottom of the circular cylinder 8 (e.g., Figure 11 As shown), the drain trough 12 is located below the annular screen 11 and inside the feed inlet assembly 3, and the open end of the cylindrical cylinder 8 located outside the feed inlet assembly 3 is threaded with a sealing cap 13.

[0055] A vertical collar 14 is fixedly connected to the top of the first housing 9. The top end of the vertical collar 14 passes through the top of the cylindrical cylinder 8 and extends into the inside of the feed inlet assembly 3. A collection housing 15 is slidably connected inside the feed inlet assembly 3. One end of the collection housing 15 is fixedly connected to an L-shaped connecting ring 16. The bottom end of the L-shaped connecting ring 16 is slidably connected to the inside of the vertical collar 14. Two floating blocks 17 are fixedly connected to the collection housing 15. The inside of the floating blocks 17 is a hollow structure.

[0056] During the stirring process, argon gas is continuously supplied to the feed inlet assembly 3 through the gas inlet pipe 6. The argon gas is transported to the bottom of the molten metal along the bottom of the gas inlet pipe 6 and forms bubbles in the molten metal that rise upwards. The pulse electromagnetic coil 7 installed on the gas inlet pipe 6 synchronously emits low-frequency high-voltage pulses, which break the bubbles formed by the argon gas into diffusely distributed microbubbles, thereby increasing the contact area between the gas and liquid and improving the dehydrogenation efficiency after the reaction of argon gas and molten metal. Furthermore, as multiple microbubbles continue to rise and the molten metal churns upwards, the denser impurities in the molten metal are simultaneously carried by the liquid flow and air flow and move towards the surface of the molten metal.

[0057] When the molten metal is stirred inside the inlet assembly 3, the collecting shell 15 comes into contact with the molten metal. The hollow structure of the floating block 17 generates buoyancy, causing the collecting shell 15 to move vertically and suspend at the surface of the molten metal. When the collecting shell 15 moves, the L-shaped connecting ring 16 slides along the sliding connection inside the vertical collar 14 and always remains connected. When impurities rise and converge to the surface of the molten metal and move under the action of the liquid flow, the impurities enter the collecting shell 15 synchronously with the molten metal on the surface, and enter the vertical collar 14 along the inside of the L-shaped connecting ring 16. Then, they enter the first shell 9 along the connection between the vertical collar 14 and the first shell 9. The molten metal flows through the surface of the annular screen 11 between the first shell 9 and the second shell 10, and is discharged from the circular cylinder 8 along the drain trough 12 and returns to the inlet assembly 3. The impurities carried in the molten metal are filtered in the annular screen 11, thereby filtering and collecting the impurities in the molten metal.

[0058] By using argon gas to rise in the molten metal, denser impurities are drawn to the surface. The swirling flow of the molten metal and the suspension of the collection shell 15 at the surface of the molten metal allow for the centralized collection and filtration of the gathered impurities. This reduces the difficulty of impurity sieving, increases the concentration of impurity filtration, reduces impurity residue during the stirring process of the molten metal, and improves the purity of the molten metal after stirring.

[0059] As a further embodiment of the present invention, a rotating shaft 18 is rotatably connected between the first housing 9 and the second housing 10. One end of the rotating shaft 18 passes through the circular cylinder 8 and extends into the feed inlet assembly 3, where a rotating fan 19 is fixedly connected. A spiral conveying blade 20 is fixedly connected to the surface of the rotating shaft 18. The spiral conveying blade 20 rotates and fits against the inner wall of the annular screen 11. A guide groove 21 is provided on the second housing 10. The vertical collar 14, the collecting housing 15, the L-shaped connecting ring 16, the floating block 17, and the rotating fan 19 are all made of silicon nitride.

[0060] When the electromagnetic sensor 2 operates, causing the molten metal to flow inside the feed inlet assembly 3, the rotating fan 19 is located inside the molten metal and rotates unidirectionally with the flow of the molten metal, driving the rotating shaft 18 to rotate synchronously. The rotating shaft 18 drives the spiral conveyor blade 20 to rotate in the annular screen 11. After impurities are screened and filtered inside the annular screen 11, the spiral conveyor blade 20 continuously conveys the impurities through the spiral and transports them along the guide chute 21 to the space between the second housing 10 and the sealing cover 13. This continuously transfers impurities from inside the annular screen 11 to the sealing cover 13, reducing the accumulation of impurities and preventing blockage of the annular screen 11, thus ensuring the flowability of the molten metal through the annular screen 11.

[0061] As a further embodiment of the present invention, a liquid inlet pipe 22 is fixedly inserted into the feed port assembly 3, and an electronically controlled nozzle 23 is fixedly installed after one end of the liquid inlet pipe 22 extends to the bottom of the drain tank 12. A liquid inlet control assembly is provided on the liquid inlet pipe 22.

[0062] When molten metal is stirred, a covering agent is usually added to prevent it from contacting air and oxidizing during stirring. After the molten metal is filtered through the annular screen 11, the clean surface of the molten metal is easily exposed to air and oxidized again during its flow into the holding furnace or casting machine. A hydraulically controlled liquid covering agent pipeline is connected to the inlet pipe 22, and the discharge volume of the electrically controlled nozzle 23 is controlled by the liquid inlet control component. When the filtered molten metal flows through the drain tank 12, the electrically controlled nozzle 23 sprays out the liquid covering agent and mixes it with the molten metal again, preventing secondary oxidation of the molten metal during its entry into the holding furnace or casting machine and reducing losses during the molten metal processing.

[0063] As a further embodiment of the present invention, the liquid inlet control component includes a linkage shaft 24, which is rotatably connected to the axis of the sealing cover 13. A linkage component is provided between the linkage shaft 24 and the rotating shaft 18. A rotating ring 25 is fixedly connected to the end of the linkage shaft 24 away from the circular cylinder 8. A speed detector 26 is fixedly installed on the sealing cover 13. A reflective block 27 is fixedly connected to the surface of the rotating ring 25. The detection end of the speed detector 26 is arranged opposite to the reflective block 27.

[0064] When the rotating fan 19 drives the rotating shaft 18 to rotate through the flow of molten metal, the linkage shaft 24 rotates synchronously with the rotating shaft 18 through the action of the linkage component, and drives the rotating ring 25 to rotate. Every time the rotating ring 25 rotates once, the detection end of the speed detector 26 performs a reflective detection on the reflective block 27 on the surface of the rotating ring 25. When the speed detector 26 detects the reflective block 27, the controller connected to the speed detector 26 controls the electronically controlled nozzle 23 to spray a quantitative amount of liquid covering agent, so that the sprayed liquid covering agent comes into contact with and mixes with the filtered molten metal. The rotation speed of the rotating ring 25 is determined by the flow speed of the molten metal in the feed port assembly 3, so that the frequency of adding liquid covering agent can be dynamically adjusted according to the flow and filtration speed of the molten metal, thereby improving the utilization rate of liquid covering agent and reducing the waste of liquid covering agent.

[0065] As a further embodiment of the present invention, the linkage component includes a first limiting ring 28 and a second limiting ring 29. The first limiting ring 28 is fixedly connected to one end of the rotating shaft 18, and the second limiting ring 29 is fixedly connected to one end of the linkage shaft 24. The first limiting ring 28 and the second limiting ring 29 are in contact with each other. Two positioning holes 30 are opened circumferentially on one side of the first limiting ring 28, and two positioning pins 31 are fixedly connected circumferentially on one side of the second limiting ring 29. The two positioning pins 31 are respectively inserted into the corresponding positioning holes 30.

[0066] The first limiting ring 28 and the second limiting ring 29 are limited by the insertion of the positioning pin 31 inside the positioning hole 30. When the rotating shaft 18 drives the first limiting ring 28 to rotate, the first limiting ring 28 drives the second limiting ring 29 to rotate synchronously through the limiting effect. And through the fixed connection between the second limiting ring 29 and the linkage shaft 24, the linkage shaft 24 rotates synchronously along the rotation connection of the sealing cover 13.

[0067] As a further embodiment of the present invention, a placement housing 32 is fixedly connected to the sealing cover 13. The placement housing 32 is located inside the cylindrical cylinder 8. One end of the placement housing 32 is connected to the guide groove 21. A guide hopper 33 is fixedly connected inside the placement housing 32. The internal space of the guide hopper 33 gradually decreases along the direction of the sealing cover 13.

[0068] When the sealing cap 13 is threaded onto the open end of the cylindrical cylinder 8, one end of the housing 32 is connected to the guide trough 21. Impurities enter the interior of the housing 32 along the guide trough 21 and move towards the sealing cap 13 along the interior of the guide hopper 33. As the impurities move inside the guide hopper 33, the internal space of the guide hopper 33 gradually shrinks. When the impurities have completely passed through the guide hopper 33 along the gradually shrinking guide surface, the reverse movement diameter of the impurities is much smaller than the entry diameter, thereby reducing the probability of the impurities returning to the annular screen 11 under the action of the liquid flow and improving the collection efficiency of the impurities.

[0069] As a further embodiment of the present invention, a movable baffle 34 is provided inside the guide hopper 33 near the sealing cover 13. A sliding strip 35 is fixedly connected to the movable baffle 34. One end of the sliding strip 35 passes through the sealing cover 13 and extends to the bottom of the rotating ring 25, where an arc-shaped pin 36 is fixedly connected. An inclined ring groove 37 is opened on the surface of the rotating ring 25, and the arc end of the arc-shaped pin 36 is located inside the inclined ring groove 37.

[0070] The linkage shaft 24 rotates synchronously with the rotating shaft 18 through the linkage assembly, driving the rotating ring 25 to rotate as well. During rotation, the rotating ring 25 guides the arc-shaped pin 36 through the inclined annular groove 37 on its surface, thereby causing the sliding bar 35 to reciprocate along the through-hole position. The sliding bar 35 drives the movable baffle 34 to move. When the movable baffle 34 moves towards the end with the larger opening of the guide hopper 33, the gap between the inner wall of the guide hopper 33 and the movable baffle 34 increases, allowing impurities to move along the gap between the movable baffle 34 and the inner wall of the guide hopper 33. However, when the movable baffle 34 moves toward the end with the smaller opening of the guide hopper 33, the gap between the inner wall of the guide hopper 33 and the movable baffle 34 gradually decreases until it is completely blocked. As impurities move through the guide hopper 33, the moving space inside the guide hopper 33 opens and closes intermittently, further reducing the probability of impurities moving in the opposite direction. Furthermore, when the movable baffle 34 approaches the end with the smaller opening of the guide hopper 33, it pushes and squeezes some of the impurities inside the guide hopper 33, increasing the impurity throughput and further improving the impurity collection efficiency.

[0071] As a further embodiment of the present invention, inclined strips 38 are fixedly connected to both the upper and lower sides of the opening end of the collection housing 15, and the two inclined strips 38 are inclined outward on the side away from the collection housing 15.

[0072] Two inclined bars 38 are provided at one end of the collection shell 15. When the collection shell 15 is suspended at the liquid surface to collect impurities, the two inclined bars 38 increase the passage range of the molten metal and impurities through the inclined guiding effect, and reduce the omission of impurities in the collection process.

[0073] 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 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 claims. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. An electromagnetic turning and stirring device, comprising an inclined support base, characterized in that, An electromagnetic inductor is fixedly installed on the inclined support base. A feed port assembly that connects to the furnace body is fixedly installed on the top of the electromagnetic inductor. The contact surface between the feed port assembly and the electromagnetic inductor is parallel to the inclined surface of the inclined support base. A feeding port is opened on the top of the feeding port assembly, and a top cover with different functions is provided on the top of the feeding port. The electromagnetic inductor includes an outer casing, an iron core, and a coil. A cooling pipe for cooling the coil is fixedly installed on the electromagnetic inductor. Multiple universal wheels with locking function are fixedly installed at the bottom of the inclined support. The inside of the feed port assembly is made of irregularly shaped refractory material. The feed inlet assembly includes a refractory component and a feed inlet steel shell. The refractory component is located inside the feed inlet steel shell and is equipped with a mating interface for easy docking with the furnace window. The feed inlet steel shell can be welded or bolted to the outer steel shell of the furnace, making the feed inlet assembly and the furnace an integral unit. The inclined support base of the electromagnetic sensor is equipped with components that connect to the electromagnetic sensor. These components are connected and fixed with bolts and quick connectors. After the feed port component and the electromagnetic sensor are installed in place, the inclined support base can be quickly detached and remains fixed in its original position. The electromagnetic induction coil of the electromagnetic induction sensor can be fixed on the salient pole or wound around the main magnetic flux; the electromagnetic induction coil is a hollow metal tube, which is cooled by water through internal insulation; it can also be a solid conductor, which is cooled by forced air cooling. An air inlet pipe is fixedly inserted into the top of the feed inlet assembly. The bottom end of the air inlet pipe is located inside the lower part of the feed inlet assembly. A pulse electromagnetic coil is fixedly installed on the air inlet pipe, and the pulse electromagnetic coil is located at the top of the feed inlet assembly. A circular cylinder is fixedly inserted into one side of the feed inlet assembly. A first housing and a second housing are fixedly connected inside the circular cylinder. An annular screen is fixedly connected between the first housing and the second housing. A drain trough is opened at the bottom of the circular cylinder. The drain trough is located below the annular screen and inside the feed inlet assembly. A sealing cap is threadedly connected to the open end of the circular cylinder outside the feed inlet assembly. A vertical collar is fixedly connected to the top of the first shell. The top of the vertical collar passes through the top of the cylindrical tube and extends into the furnace body. A collection shell is slidably connected inside the furnace body. One end of the collection shell is fixedly connected to an L-shaped connecting ring. The bottom end of the L-shaped connecting ring is slidably connected to the inside of the vertical collar. Two floating blocks are fixedly connected to the collection shell. The interior of the floating blocks is a hollow structure.

2. The electromagnetic tumbling and stirring device according to claim 1, characterized in that, A rotating shaft is rotatably connected between the first housing and the second housing. One end of the rotating shaft passes through the cylindrical tube and extends into the feed inlet assembly, where a rotating fan is fixedly connected. A spiral conveying blade is fixedly connected to the surface of the rotating shaft. The spiral conveying blade rotates and fits against the inner wall of the annular screen. A guide groove is provided on the second housing. The vertical collar, collecting housing, L-shaped connecting ring, floating block, and rotating fan are all made of silicon nitride.

3. The electromagnetic tumbling and stirring device according to claim 2, characterized in that, A liquid inlet pipe is fixedly inserted into the feed port assembly. One end of the liquid inlet pipe extends to the bottom of the drain tank and is then fixedly installed with an electrically controlled nozzle. A liquid inlet control assembly is provided on the liquid inlet pipe.

4. The electromagnetic tumbling and stirring device according to claim 3, characterized in that, The liquid inlet control assembly includes a linkage shaft, which is rotatably connected to the axis of the sealing cover. A linkage component is provided between the linkage shaft and the rotating shaft. A rotating ring is fixedly connected to the end of the linkage shaft away from the cylindrical tube. A speed detector is fixedly installed on the sealing cover. A reflective block is fixedly connected to the surface of the rotating ring. The detection end of the speed detector is positioned opposite to the reflective block.

5. The electromagnetic tumbling and stirring device according to claim 4, characterized in that, The linkage assembly includes a first limiting ring and a second limiting ring. The first limiting ring is fixedly connected to one end of the rotating shaft, and the second limiting ring is fixedly connected to one end of the linkage shaft. The first limiting ring and the second limiting ring are in contact with each other. Two positioning holes are opened on one side of the first limiting ring along the circumferential direction, and two positioning pins are fixedly connected on one side of the second limiting ring along the circumferential direction. The two positioning pins are respectively inserted into the corresponding positioning holes.

6. The electromagnetic tumbling and stirring device according to claim 4, characterized in that, A housing is fixedly connected to the sealing cover. The housing is located inside the cylindrical tube. One end of the housing is connected to the guide trough. A guide hopper is fixedly connected inside the housing. The internal space of the guide hopper gradually decreases along the direction of the sealing cover.

7. The electromagnetic tumbling and stirring device according to claim 6, characterized in that, A movable baffle is provided inside the guide hopper near the sealing cover. A sliding strip is fixedly connected to the movable baffle. One end of the sliding strip passes through the sealing cover and extends to the bottom of the rotating ring, where it is fixedly connected to an arc-shaped pin. An inclined ring groove is opened on the surface of the rotating ring, and the arc end of the arc-shaped pin is located inside the inclined ring groove.

8. The electromagnetic tumbling and stirring device according to claim 1, characterized in that, Inclined bars are fixedly connected to both the upper and lower sides of the opening end of the collection shell, and the two inclined bars are inclined outward on the side away from the collection shell.

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