A feeding device for alloy casting melting

Abstract

The utility model relates to the field of alloy foundry smelting discloses a kind of alloy foundry smelting's feeding device, including storage box, the storage box is fixed in the top of bottom plate by support, the top surface of bottom plate is fixed with pre-melting box, the discharge port of the bottom of storage box is connected with screw feeder fixedly, the inner wall front side, rear side of pre-melting box is fixed with a plurality of resistance heating wire, another end of first air pipe is equipped with spray gun.In the utility model, through the synergistic effect of storage box, bottom plate, pre-melting box, screw feeder, resistance heating wire, first air pipe, spray gun, pump, delivery pipe, connecting pipe and PLC controller, inert gas is directly sprayed into molten iron deep part after pre-melting alloy material, avoid alloy and air contact, reduce the oxidation loss of element, so that the new formula of "reduce 80% ferrosilicon, 90% ferromanganese dosage" can be realized by very high element yield.

Description

Technical Field

[0001] This utility model relates to the technical field of alloy casting and smelting, specifically to a feeding device for alloy casting and smelting. Background Technology

[0002] Alloy casting and smelting is a core process in manufacturing, widely used in the automotive, machinery, and aerospace industries. Smelting is a crucial step in the production of alloy castings, typically requiring the addition of alloy materials such as ferrosilicon (FeSi) and ferromanganese (FeMn) to a furnace (e.g., electric furnace or cupola furnace) to adjust the chemical composition of the molten iron and ensure the final casting's mechanical properties.

[0003] Currently, traditional feeding methods generally adopt direct mixing or simple step-by-step feeding, which has the following disadvantages: when alloy materials are directly fed onto the surface of high-temperature molten iron, some elements (such as silicon and manganese) will react with oxygen in the air to cause oxidation and burn-off, resulting in a low actual element recovery rate. Utility Model Content

[0004] The purpose of this invention is to provide a feeding device for alloy casting and smelting, in order to solve the problem that when alloy materials are directly fed onto the surface of high-temperature molten iron, some elements (such as silicon and manganese) will undergo oxidation reactions with oxygen in the air, resulting in burn-off and a low actual element recovery rate.

[0005] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: a feeding device for alloy casting and smelting, comprising a storage box, the storage box being fixed above a base plate by a bracket, a pre-melting box being fixed on the top surface of the base plate, a screw feeder being fixedly connected to the discharge port at the bottom of the storage box, the discharge port at the bottom of the screw feeder being fixedly connected to the top of the pre-melting box, several resistance heating wires being fixedly attached to the front and rear sides of the inner wall of the pre-melting box, a first air pipe being fixedly connected to the bottom surface of the pre-melting box, a spray gun being provided at the other end of the first air pipe, a nozzle being provided at the bottom end of the spray gun, a pump being fixedly attached to the top surface of the base plate, a conveying pipe being fixedly connected to the output end of the pump and the first air pipe, a connecting pipe being fixedly connected to the input end of the pump, a PLC controller being fixedly attached to the top surface of the base plate, and the screw feeder, resistance heating wires, and pump being electrically connected to the PLC controller.

[0006] Preferably, a support plate is fixed to one side of the base plate, and a cylinder is fixed to the top surface of the support plate. The cylinder is electrically connected to the PLC controller. One end of the cylinder telescopic rod passes through the support plate and is fixed to a movable plate. A connecting rod is rotatably arranged above the movable plate. A device ring is provided on the outer wall of the spray gun. The outer wall of the device ring is connected to the front end of the connecting rod. A corrugated pipe is fixed to the other end of the first air pipe. The bottom end of the corrugated pipe is connected to the top end of the spray gun and a second air pipe is fixed thereon.

[0007] Preferably, a spherical bearing is fixed to the outer wall of the spray gun, the spherical bearing is connected to the inner wall of the device ring, a motor is fixed to the bottom surface of the moving plate, the motor is electrically connected to the PLC controller, the output shaft of the motor passes through the moving plate and is fixed to an eccentric disk, an eccentric shaft is fixed to the top surface of the eccentric disk, and the eccentric shaft is fixed to the connecting rod by a bearing.

[0008] Preferably, a fixing hole is provided on the right side of the outer wall of the pre-melting box, and a temperature sensor is fixed inside the fixing hole. The temperature sensor is electrically connected to the PLC controller.

[0009] Preferably, an observation hole is provided on the right side of the outer wall of the pre-melting box, and heat-insulating glass is fixed inside the observation hole.

[0010] Preferably, the top surface of the support plate has two limiting holes, and the top surface of the movable plate has two limiting posts fixed thereon, with the two limiting posts slidably inserted into the two limiting holes respectively.

[0011] Compared with existing technologies, the alloy casting and smelting feeding device that adopts the above technical solution has the following beneficial effects: I. In use, through the coordinated action of the storage box, bottom plate, pre-melting box, screw feeder, resistance heating wire, first gas pipe, spray gun, pump, conveying pipe, connecting pipe and PLC controller, the inert gas is used to directly spray the pre-melted alloy material into the depth of the molten iron, avoiding contact between the alloy and air, reducing the oxidation and burning loss of elements, and thus the extremely high element yield ensures that the new formula of "reducing the amount of ferrosilicon by 80% and ferromanganese by 90%" can be achieved. Second, during use, this lifting and adjustment function allows operators to flexibly change the spray position of the spray gun according to actual production needs, ensuring that the alloy material can be accurately sprayed onto the appropriate position of the molten iron. Driven by the eccentric shaft, the connecting rod begins to swing regularly. The swing of the connecting rod further drives the device ring and the spray gun to swing synchronously, thereby realizing the flexible change of the spray angle of the spray gun. The PLC controller will reduce the power of the resistance heating wire or stop heating, thereby ensuring that the temperature in the pre-melting box remains stable within the optimal range required for the pre-melting of the alloy material, providing a reliable guarantee for a high-quality pre-melting process. Third, during use, the observation hole and the heat-insulating glass together form a convenient and safe observation window, providing staff with a direct way to understand the state of the materials inside the pre-melting box. They can clearly observe the melting process of the alloy materials inside the pre-melting box, color changes, and any abnormal phenomena. The limiting post slides within the limiting hole, limiting the movement of the plate and ensuring that it does not shift or shake during lifting, thus improving stability. Attached Figure Description

[0012] Figure 1 This is a perspective view of an embodiment.

[0013] Figure 2 This is a breakdown diagram of an embodiment.

[0014] Figure 3 This is a cross-sectional schematic diagram of the pre-melting box in an embodiment.

[0015] Figure 4 Examples Figure 2 Enlarged diagram of point A in the middle.

[0016] In the diagram: 1. Storage bin; 2. Base plate; 3. Pre-melting box; 4. Screw feeder; 5. Resistance heating wire; 6. First air pipe; 7. Spray gun; 8. Pump; 9. Conveying pipe; 10. Connecting pipe; 11. PLC controller; 12. Support plate; 13. Cylinder; 14. Moving plate; 15. Connecting rod; 16. Facility ring; 17. Corrugated pipe; 18. Second air pipe; 19. Spherical bearing; 20. Motor; 21. Eccentric disc; 22. Eccentric shaft; 23. Fixing hole; 24. Temperature sensor; 25. Observation hole; 26. Heat-insulating glass; 27. Limiting hole; 28. Limiting post. Detailed Implementation

[0017] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0018] like Figures 1-3 As shown, a feeding device for alloy casting and smelting includes a storage bin 1, which is fixed above a base plate 2 by a bracket. A pre-melting box 3 is fixed on the top surface of the base plate 2. A screw feeder 4 is fixedly connected to the discharge port at the bottom of the storage bin 1. The discharge port at the bottom of the screw feeder 4 is fixedly connected to the top of the pre-melting box 3. Several resistance heating wires 5 are fixed on the front and rear sides of the inner wall of the pre-melting box 3. A first air pipe 6 is fixedly connected to the bottom surface of the pre-melting box 3. A spray gun 7 is provided at the other end of the first air pipe 6. The bottom end of the spray gun 7 has a nozzle. A pump 8 is fixedly fixed on the top surface of the base plate 2. A conveying pipe 9 is fixedly connected between the output end of the pump 8 and the first air pipe 6. A connecting pipe 10 is fixedly connected to the input end of the pump 8. A PLC controller 11 is fixedly fixed on the top surface of the base plate 2. The screw feeder 4, the resistance heating wires 5, and the pump 8 are all electrically connected to the PLC controller 11. The PLC controller 11 is a Siemens S7-200.

[0019] In operation, the operator first securely connects the connecting pipe 10 to an external inert gas source (such as a nitrogen or argon cylinder) to ensure a smooth gas supply. Then, using the PLC controller 11, the operator precisely activates the resistance heating wire 5. The resistance heating wire 5 rapidly heats up, comprehensively heating the internal space of the pre-melting box 3, creating a suitable temperature environment for the subsequent pre-melting of the alloy material. Next, the operator carefully proportions the alloy material according to a specific low-cost formula (reducing the amount of ferrosilicon by 80% and ferromanganese by 90%) and puts it into the storage bin 1. Under gravity, the alloy material smoothly enters the screw feeder 4 through the discharge port at the bottom of the storage bin 1. At this point, the screw feeder 4 is activated again via the PLC controller 11. The rotary feeder 4 delivers alloy material precisely and quantitatively through the bottom outlet to the interior of the pre-melting box 3 with a precise rotation speed and stable conveying capacity. After entering the pre-melting box 3, the alloy material quickly begins the pre-melting process at a suitable temperature. The pre-melted alloy material then enters the first gas pipe 6 through the bottom of the pre-melting box 3. At the same time, the operator starts the pump 8 through the PLC controller 11. The pump 8 starts to operate efficiently, pressurizing the inert gas and conveying it through the connecting pipe 10 to the conveying pipe 9, and then through the conveying pipe 9 to the first gas pipe 6. The inert gas powerfully blows the alloy material in the pre-melting box 3 to the spray gun 7 with a strong airflow, and finally accurately sprays it into the depth of the molten iron in the furnace through the nozzle at the end of the spray gun 7.

[0020] Through the coordinated action of the storage bin 1, bottom plate 2, pre-melting box 3, screw feeder 4, resistance heating wire 5, first air pipe 6, spray gun 7, pump 8, conveying pipe 9, connecting pipe 10 and PLC controller 11, the inert gas directly sprays the pre-melted alloy material into the depth of the molten iron, avoiding contact between the alloy and air, reducing the oxidation and burning loss of elements. Thus, the extremely high element yield ensures that the new formula of "reducing the amount of ferrosilicon by 80% and ferromanganese by 90%" can be achieved.

[0021] like Figure 1 , Figure 2 and Figure 4 As shown, a support plate 12 is fixed to one side of the base plate 2, and a cylinder 13 is fixed to the top surface of the support plate 12. The cylinder 13 is electrically connected to the PLC controller 11. One end of the telescopic rod of the cylinder 13 passes through the support plate 12 and is fixed to a movable plate 14. A connecting rod 15 is rotatably mounted above the movable plate 14. A device ring 16 is provided on the outer wall of the spray gun 7. The outer wall of the device ring 16 is connected to the front end of the connecting rod 15. A corrugated pipe 17 is fixed to the other end of the first air pipe 6. The bottom end of the corrugated pipe 17 is connected to the top end of the spray gun 7 and a second air pipe 18 is fixed thereto. The PLC controller 11 is used to control the extension and retraction of the telescopic rod of the cylinder 13. The cylinder 13 is equipped with an air compressor. The air compressor is connected to the air inlet of the cylinder 13 through a high-pressure sealed air pipe to provide air pressure to the cylinder 13 to drive the telescopic rod to extend and retract. During operation, the operator sends commands through the PLC controller 11 to control the telescopic rod of the cylinder 13 to extend and retract. During stable extension and retraction, the telescopic rod of the cylinder 13 drives the moving plate 14 to rise and fall. The rising and falling of the moving plate 14, in turn, causes the connecting rod 15, the facility ring 16, and the spray gun 7 to rise and fall synchronously. This lifting and adjusting function allows the operator to flexibly change the spray position of the spray gun 7 according to actual production needs, ensuring that the alloy material can be accurately sprayed to the appropriate position in the molten iron. When the spray gun 7 rises and falls, the second air pipe 18 drives the corrugated pipe 17 to extend and retract accordingly. The corrugated pipe 17 is made of high-performance metal, possessing excellent toughness, high temperature resistance, and good deformation capacity. During the extension and retraction process, the metal corrugated pipe 17 can always maintain a tight connection between the first air pipe 6 and the second air pipe 18, ensuring unobstructed flow of the alloy material, allowing the alloy material to quickly disperse and melt in the molten iron, shortening the homogenization time and improving production efficiency.

[0022] like Figure 1 , Figure 2 and Figure 4 As shown, a spherical bearing 19 is fixed to the outer wall of the spray gun 7. The spherical bearing 19 is connected to the inner wall of the facility ring 16. A motor 20 is fixed to the bottom surface of the moving plate 14. The motor 20 is electrically connected to the PLC controller 11. The output shaft of the motor 20 passes through the moving plate 14 and is fixed to an eccentric disk 21. An eccentric shaft 22 is fixed to the top surface of the eccentric disk 21. The eccentric shaft 22 is fixed to the connecting rod 15 by a bearing. A fixing hole 23 is opened on the right side of the outer wall of the pre-melting box 3. A temperature sensor 24 is fixed inside the fixing hole 23. The temperature sensor 24 is electrically connected to the PLC controller 11.

[0023] During use, the operator starts the motor 20 via the PLC controller 11. The motor 20 then starts running, and its output shaft drives the eccentric disk 21 to rotate stably. During the rotation of the eccentric disk 21, the eccentric shaft 22 fixed on its top surface makes circular motion. The eccentric shaft 22 is connected to the connecting rod 15 through a bearing. Driven by the eccentric shaft 22, the connecting rod 15 begins to swing regularly. The swing of the connecting rod 15 further drives the facility ring 16 and the spray gun 7 to swing synchronously, thereby realizing the flexible change of the spray angle of the spray gun 7. During the swing of the spray gun 7, the joint bearing 19 plays a crucial role, effectively preventing wear caused by the relative motion between the facility ring 16 and the spray gun 7 during the swing, making the swing action smoother and more stable. This swing function allows the alloy material to be dispersed and melted in the molten iron in a wider range and in a more uniform manner, further shortening the homogenization time and improving the quality of alloy casting.

[0024] Temperature sensor 24 can monitor the temperature changes of the material inside the pre-melting box 3 in real time and accurately, and quickly transmit this temperature information to PLC controller 11 in the form of electrical signals. After receiving and analyzing this temperature information, PLC controller 11 controls the working state of resistance heating wire 5 according to preset programs and parameters. When the temperature is lower than the set value, PLC controller 11 will increase the power of resistance heating wire 5 to speed up the heating process. When the temperature reaches or exceeds the set value, PLC controller 11 will reduce the power of resistance heating wire 5 or stop heating, thereby ensuring that the temperature inside the pre-melting box 3 is always stable within the optimal range required for the pre-melting of alloy materials, providing a reliable guarantee for a high-quality pre-melting process.

[0025] like Figures 1-4 As shown, an observation hole 25 is provided on the right side of the outer wall of the pre-melting box 3. A heat-insulating glass 26 is fixed inside the observation hole 25. Two limiting holes 27 are provided on the top surface of the support plate 12. Two limiting posts 28 are fixed on the top surface of the moving plate 14. The two limiting posts 28 are slidably inserted into the two limiting holes 27 respectively.

[0026] In this device, the observation hole 25 and the heat-insulating glass 26 together form a convenient and safe observation window, providing workers with a direct way to understand the state of the materials inside the pre-melting box 3. It allows for clear observation of the melting process, color changes, and any abnormalities of the alloy materials inside the pre-melting box 3. The heat-insulating glass 26 has excellent heat insulation performance, effectively blocking high-temperature radiation inside the pre-melting box 3, preventing workers from being injured by high temperatures during observation, and ensuring operational safety. Simultaneously, its good transparency ensures clear observation, enabling workers to accurately judge the material state and adjust production parameters in a timely manner, ensuring the smooth progress of the pre-melting process. When the moving plate 14 is raised and lowered by the cylinder 13, the limiting post 28 slides and inserts within the limiting hole 27, limiting the moving plate 14 and ensuring that it does not shift or shake during raising and lowering, thus improving stability.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A feeding device for alloy casting and smelting, comprising a storage bin (1), the storage bin (1) being fixed above a base plate (2) by a bracket, characterized in that, A pre-melting box (3) is fixed on the top surface of the base plate (2). A screw feeder (4) is fixedly connected to the discharge port at the bottom of the storage box (1). The discharge port at the bottom of the screw feeder (4) is fixedly connected to the top of the pre-melting box (3). Several resistance heating wires (5) are fixed on the front and rear sides of the inner wall of the pre-melting box (3). A first air pipe (6) is fixedly connected to the bottom surface of the pre-melting box (3). A spray gun (7) is provided at the other end of the first air pipe (6). The bottom end of the spray gun (7) has a nozzle. A pump (8) is fixed on the top surface of the base plate (2). A conveying pipe (9) is fixedly connected between the output end of the pump (8) and the first air pipe (6). A connecting pipe (10) is fixedly connected to the input end of the pump (8). A PLC controller (11) is fixed on the top surface of the base plate (2). The screw feeder (4), resistance heating wires (5) and pump (8) are all electrically connected to the PLC controller (11).

2. The feeding device for alloy casting and smelting according to claim 1, characterized in that: A support plate (12) is fixed on one side of the base plate (2). A cylinder (13) is fixed on the top surface of the support plate (12). The cylinder (13) is electrically connected to the PLC controller (11). One end of the telescopic rod of the cylinder (13) passes through the support plate (12) and is fixed with a movable plate (14). A connecting rod (15) is rotatably arranged above the movable plate (14). A facility ring (16) is provided on the outer wall of the spray gun (7). The outer wall of the facility ring (16) is connected to the front end of the connecting rod (15). A corrugated pipe (17) is fixed at the other end of the first air pipe (6). The bottom end of the corrugated pipe (17) is connected to the top end of the spray gun (7) and a second air pipe (18) is fixed thereon.

3. The feeding device for alloy casting and smelting according to claim 2, characterized in that: The outer wall of the spray gun (7) is fixed with a spherical bearing (19), which is connected to the inner wall of the facility ring (16). The bottom surface of the moving plate (14) is fixed with a motor (20), which is electrically connected to the PLC controller (11). The output shaft of the motor (20) passes through the moving plate (14) and is fixed with an eccentric disk (21). The top surface of the eccentric disk (21) is fixed with an eccentric shaft (22), which is fixed to the connecting rod (15) by a bearing.

4. The feeding device for alloy casting and smelting according to claim 3, characterized in that: A fixing hole (23) is provided on the right side of the outer wall of the pre-melting box (3). A temperature sensor (24) is fixed inside the fixing hole (23). The temperature sensor (24) is electrically connected to the PLC controller (11).

5. The feeding device for alloy casting and smelting according to claim 1, characterized in that: An observation hole (25) is provided on the right side of the outer wall of the pre-melting box (3), and heat-insulating glass (26) is fixed inside the observation hole (25).

6. The feeding device for alloy casting and smelting according to claim 2, characterized in that: The top surface of the support plate (12) has two limiting holes (27), and the top surface of the movable plate (14) has two limiting posts (28). The two limiting posts (28) are slidably inserted into the two limiting holes (27).

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