Fused magnesia melt casting molding device and method thereof

Abstract

The invention relates to the technical field of magnesia production, and particularly discloses a fused magnesia melt casting molding device which comprises a base, a long-strip-shaped base of the base, an electric arc furnace arranged at the top of one end of the base and used for smelting natural magnesite, and a transfer device arranged at the top of the other end of the base. At least two suspension devices which are arranged at intervals are arranged on the transfer device, and a forming die is arranged on each suspension device; the electric arc furnace comprises a furnace shell, a top cover and a supporting piece. The transfer device comprises a supporting frame, an electric sliding rail and an electric sliding block. The suspension device comprises an electric hoist and a hook. According to the scheme, the transfer device with a plurality of suspension devices is arranged, so that automatic transfer and cyclic position covering of the sand mold shell can be realized, the waste of frequent hoisting and waiting time in a traditional one-mold one-casting mode is avoided, pouring and preparation procedures can be carried out in parallel, the single-batch production period is remarkably shortened, the overall production efficiency is improved, and the production cost is reduced. The large-scale production requirements are met.

Description

Technical Field

[0001] This invention relates to the field of magnesia production technology, and specifically discloses an electrofused magnesia melt casting and molding device and method. Background Technology

[0002] Fused magnesia is a high-performance refractory material, mainly produced by smelting natural magnesite ore in an electric arc furnace. Its main components are MgCO3 or lightly calcined magnesia. In the production of fused magnesia, the molten fused magnesia needs to be cast into shape. That is, fused magnesia particles and fine powder are used as the main aggregate and matrix, mixed with binders, additives and water to make a flowable or plastic refractory castable. This is then poured into molds or construction areas, and after curing and baking, it forms an integral refractory lining or product.

[0003] When casting molten magnesia, the molded parts often weigh tens of tons. Therefore, a one-mold-one-casting method using sand mold shells is often adopted. This involves using a gantry crane to place the sand mold shell at the discharge port of the electric arc furnace. After the sand mold shell is filled, it is returned to the placement area by the gantry crane, and a new sand mold shell is picked up and sent back to the discharge port of the electric arc furnace. This process is repeated, which makes the whole process lack continuous production capacity and the production cycle of a single batch is long, making it difficult to meet the needs of large-scale production. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide an electrofused magnesia melt casting apparatus and method to solve the problem of slow production progress caused by casting in single batches and excessively long production cycles.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an electrofused magnesia molten casting molding device, comprising a base, a long strip-shaped base of the base, an electric arc furnace for melting natural magnesite ore is provided at the top of one end of the base, and a transfer device is provided at the top of the other end of the base, and at least two spaced-apart suspension devices are provided on the transfer device, and each suspension device is provided with a molding die. An electric arc furnace includes a furnace shell, a top cover, and supporting components; The transfer device includes a support frame, an electric slide rail, and an electric slider; The suspension device includes an electric hoist and a hook; The molding die includes a sand mold shell; The present invention also includes a control box, which is mounted on a support member and contains a controller.

[0006] Furthermore, a second slot is provided at one end of the base near the electric arc furnace, the second slot corresponding to the electric arc furnace. A connecting seat is installed at the bottom of the furnace shell near the transfer device. Both ends of the connecting seat are rotatably mounted with a first connecting shaft, and the other end of the first connecting shaft is fixed to the inner wall of the second slot. A first pushing mechanism is provided at the other end of the bottom of the furnace shell. The first pushing mechanism is a hydraulic cylinder. A hydraulic station is provided on one side of the base. The hydraulic station is connected to the first pushing mechanism through a conduit and is connected to the controller through a wire. A second connecting shaft is rotatably installed at the bottom of the first pushing mechanism. The other end of the second connecting shaft is fixed to the inner wall of the second slot. A third connecting shaft is rotatably installed at the top of the first pushing mechanism. A fixed seat is installed at the other end of the third connecting shaft and is connected to the bottom of the furnace shell. A pad is also provided at the bottom of the furnace shell. The pad is placed in the second slot and is fixed to the inner wall of the second slot by a bracket.

[0007] Furthermore, a discharge chute is provided on the top of the furnace shell near the first connecting shaft. The discharge chute is connected to the inside of the furnace shell, and a sealing cover is provided on the top of the discharge chute 42. One end of the sealing cover is hinged to the outer wall of the furnace shell, and an inclined second pushing mechanism is provided above the sealing cover. The second pushing mechanism is a hydraulic cylinder, and the second pushing mechanism is connected to the hydraulic station through a conduit. The ends of the second pushing mechanism are rotatably installed in U-shaped seats through a rotating shaft. One U-shaped seat is fixed to the furnace shell, and the other U-shaped seat is fixed to the sealing cover. Below the discharge chute, there is a guide chute. The frontal projection of the discharge chute is located in the guide chute, and there is a clearance fit between the discharge chute and the guide chute. Below the discharge chute, there is a third pushing mechanism, which is a hydraulic cylinder. The third pushing mechanism is connected to the hydraulic station through a conduit. A connecting plate is installed at one end of the third pushing mechanism, and the connecting plate is fixed to the bottom of the guide chute. At least one sleeve is provided parallel to the side of the third pushing mechanism. The sleeve is fixed to the bottom of the discharge trough by a bracket. A first guide shaft is installed inside the sleeve, and one end of the first guide shaft is fixed to the connecting plate.

[0008] Furthermore, the furnace shell is an open-top shell, and the top cover is placed on the top of the furnace shell. Two graphite electrodes are installed through the top cover. The graphite electrodes are connected to the controller through wires. Both graphite electrodes are set on the mounting base, and the mounting base is fixed to the top cover. A fixing plate is installed on the top of the mounting base. A first connecting frame is connected to the top of the fixing plate. A U-shaped frame is installed on the top of the first connecting frame. A second connecting frame is rotatably installed in the U-shaped frame through a rotating shaft. The top of the second connecting frame is installed on the support. A torsion spring is fitted on the rotating shaft. One end of the torsion spring is fixed to the U-shaped frame, and the other end of the torsion spring is fixed to the second connecting frame. A sleeve is also fitted on the rotating shaft. One end of the sleeve is fixed to the second connecting frame, and the other end of the sleeve is rotatably connected to the U-shaped frame. The support includes a crossbeam, one end of which is fixed to a second connecting frame, and the other end of which is rotatably mounted on a rotating seat via a rotating shaft. A first drive motor is connected to the top of the rotating shaft and is placed in a first motor housing. The first motor is fixed to the crossbeam and is connected to a controller via a wire. A fourth pushing mechanism is installed at the bottom of the rotating seat. The fourth pushing mechanism is a hydraulic cylinder and is connected to a hydraulic station via a conduit. The fourth pushing mechanism is mounted on the support seat and the base, while the control box is mounted on the side of the support seat. At least one second guide shaft is provided parallel to the side of the fourth push mechanism. The top of the second guide shaft is fixed to the rotating seat, and the bottom of the second guide shaft slides through the support seat.

[0009] Furthermore, a first slot is provided at the end of the base away from the second slot. The support frame is an elliptical frame, and a fixed frame is provided inside the support frame. The fixed frame is fixed to the base. An electric slide rail is installed along the bottom of the support frame. At least two electric sliders are slidably installed on the electric slide rail. The electric slide rail is connected to the controller through a wire. The suspension device is correspondingly set on the electric slider. Two electrode plates are arranged at intervals along the support frame, and two pole posts are provided on the suspension device. The pole posts are in sliding contact with the electrode plates, and the electrode plates are connected to the controller through wires.

[0010] Furthermore, the electric hoist is mounted on a linear motor, and the linear motor is mounted on a support plate. The support plate is fixed to the electric slider. A second motor box is installed on the rope of the electric hoist. A second drive motor is installed inside the second motor box. The output end of the second drive motor passes through the second motor box and is connected to a hook. The forming mold is hung on the hook. The linear motor, the electric hoist, and the second drive motor are all connected to the pole column through wires. At least one support slide rail is provided parallel to the side of the linear motor. The support slide rail is fixed to the support plate, and a support slider is slidably installed on the support slide rail. The support slider is fixed to the electric hoist by a bracket. A support cover with a top opening is fitted onto the bottom of the second motor housing. A counterweight is installed on the outer wall of the support cover, and a sliding groove is provided along the outer wall of the second motor housing. A limit slider is installed in the sliding groove and is fixed to the support cover.

[0011] Furthermore, a connecting column is installed on the side of the sand mold shell, and a receiving groove is opened on the side of the connecting column near the sand mold shell. A movable seat is provided along the outer wall of the sand mold shell, and the movable seat is set through the receiving groove. A fixed shaft is installed at the top of the corner of the movable seat. The top of the fixed shaft slides through the connecting column and is installed on the mounting frame. An arc-shaped bearing seat is provided at the top of the mounting frame, and a limiting groove corresponding to the hook is opened in the top of the bearing seat. A high-definition camera is installed on the upper side of the mounting bracket. The high-definition camera is connected to the pole via a wire, and the high-definition camera is fixed to the counterweight via a third connecting bracket.

[0012] Furthermore, a placement groove is provided on the base, which corresponds to the sand mold shell, and a support plate is placed inside the placement groove. A weighing sensor is provided at the bottom of the support plate. The weighing sensor is connected to the controller through a wire and is located at the bottom of the placement groove.

[0013] Furthermore, two cavities are provided on the base, with the two cavities arranged on both sides of the placement slot. Clamping plates are provided on both sides of the placement slot, and the clamping plates are located above the bearing plate. A fifth pushing mechanism is vertically installed in the middle of the side where the two clamping plates are relatively far apart. The fifth pushing mechanism is a hydraulic cylinder, and the fifth pushing mechanism is connected to the hydraulic station through a conduit. The fifth pushing mechanism is located in the cavity. At least one third guide shaft is provided parallel to the side of the fifth push mechanism. One end of the third guide shaft is fixed to the clamp plate, and the other end of the third guide shaft slides through the side wall of the placement groove and is placed in the cavity.

[0014] Furthermore, the production method based on electrofused magnesia melt casting is as follows: S1. Material preparation: Suspend multiple molding dies loaded with sand molds on the hooks of each suspension device of the transfer device in sequence; S2, Melting and Transfer: Control the electric arc furnace to melt the raw materials, and at the same time control the transfer device to move a suspension device with a forming mold to the casting station on the side of the electric arc furnace. S3. Positioning and clamping: Control the electric hoist of the suspension device to descend, place the sand mold shell into the placement groove of the base, and clamp it in place by clamping plate; S4. Precise casting: Control the tilt of the electric arc furnace shell so that the molten magnesia flows into the sand mold through the discharge chute and guide chute; monitor the casting volume through the weighing sensor and stop casting when the set value is reached; S5. Transfer and Cooling: After the casting is completed, the control clamp is released, the electric hoist lifts the cast sand mold shell, and the transfer device moves it out of the casting station and sends it to the cooling or unloading area. S6. Cyclic replenishment: At the same time or after step S5, control the transfer device to move the suspension device of the next empty molding mold to the pouring station, and repeat steps S3-S5. S7. Unloading and Recycling: Remove the cooled casting along with the sand mold shell from the suspension device, and install a new empty sand mold shell onto the suspension device for the next cycle.

[0015] The working principle and beneficial effects of this solution are as follows: 1. By setting up a transfer device with multiple suspension devices, this solution can realize the automatic transfer and cyclic replenishment of sand mold shells, avoiding the waste of time due to frequent hoisting and waiting in the traditional "one mold, one casting" mode. The pouring and preparation processes can be carried out in parallel, significantly shortening the production cycle of a single batch, improving the overall production efficiency, and adapting to the needs of large-scale production.

[0016] 2. As described in 1, this solution uses automated components such as electric slide rails, linear motors, electric hoists, and hydraulic push mechanisms, in conjunction with a controller, to achieve automated control of the entire pouring process. Workers can operate the equipment remotely, reducing direct contact in high-temperature and high-load environments and improving operational safety and convenience.

[0017] 3. As described in section 2, this solution uses a weighing sensor to monitor the pouring volume in real time. Combined with the adjustment of the guide channel position and the clamping plate fixing mechanism, it ensures that the melt is accurately and stably injected into the sand mold shell, reducing spillage and fluctuations during the pouring process and improving the consistency of product molding quality. In addition, high-definition cameras, laser rangefinders and other sensors are also installed to monitor the pouring process and equipment status in real time, which facilitates timely adjustment of parameters such as the guide channel position and clamping force, and improves the visualization and controllability of the production process.

[0018] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0019] Figure 1 This is a schematic diagram showing the distribution of the various mechanisms in the embodiment; Figure 2 This is a schematic diagram of the overall structure of the embodiment; Figure 3 A cross-sectional view of the electric arc furnace in the embodiment; Figure 4 This is a schematic diagram of the discharge trough structure in an embodiment; Figure 5 This is a schematic diagram of the placement slot structure in an embodiment; Figure 6This is a schematic diagram of the support frame structure for an embodiment; Figure 7 Schematic diagram of the suspension device structure for an embodiment Figure 1 ; Figure 8 Schematic diagram of the suspension device structure for an embodiment Figure 2 ; Figure 9 This is a schematic diagram of the internal structure of the second motor housing in an embodiment; Figure 10 This is a schematic diagram of the molding die structure for an embodiment.

[0020] The following are the markings in the attached diagram: 1. Base; 10. First slot; 11. Second slot; 12. Placement slot; 13. Support plate; 14. Cavity; 15. Clamping plate; 16. Fifth pushing mechanism; 17. Third guide shaft; 18. Laser rangefinder; 2. Transfer device; 20. Support frame; 200. Electric slide rail; 201. Electric slider; 21. Fixing frame; 22. Suspension device; 220. Support plate; 221. Linear motor; 222. Support slide rail; 223. Support slider; 224. Electric hoist; 225. Second motor box; 2250. Second drive motor; 2251. Support cover; 2252. Slide groove; 2253. Limit slider; 226. Hook; 227. Counterweight; 228. High-definition camera; 229. Third connecting frame; 3. Molding mold; 30. Sand mold shell; 31. Connecting column; 32. Receiving groove; 33. Moving seat; 34. Fixed shaft; 35. Mounting bracket; 36. Bearing seat; 37. Limiting groove; 4. Electric arc furnace; 40. Furnace shell; 41. Top cover; 410. Fixing plate; 411. Mounting base; 412. Graphite electrode; 413. First connecting frame; 414. U-shaped frame; 415. Second connecting frame; 416. Rotating shaft; 417. Torsion spring; 418. Sleeve; 42. Discharge chute; 420. Sealing cover; 421. Second pushing mechanism; 422. Guide channel; 423. Connecting plate; 424. Third pushing mechanism; 425. Sleeve; 426. First guide shaft; 43. Connecting seat; 44. First connecting shaft; 45. First pushing mechanism; 46. Second connecting shaft; 47. Third connecting shaft; 470. Fixed seat; 48. Pad; 49. Support member; 490. Crossbeam; 491. First motor housing; 492. First drive motor; 493. Rotating seat; 494. Fourth pushing mechanism; 495. Second guide shaft; 496. Support seat; 5. Control box. Detailed Implementation

[0021] The following detailed description illustrates the specific implementation method: Example

[0022] like Figures 1 to 10 As shown, an electrofused magnesia melt casting and molding device is disclosed, including a base 1. An electric arc furnace 4 is arranged above one end of the base 1. In use, a second slot 11 is opened at one end of the base 1. The electric arc furnace 4 includes a furnace shell 40 with a top opening. The furnace shell 40 is made of high temperature resistant material. The furnace shell 40 corresponds to the second slot 11 and is located above the second slot 11. A connecting seat 43 is installed at the bottom of one end of the furnace shell 40. A first connecting shaft 44 is rotatably installed at both ends of the connecting seat 43. The other end of the first connecting shaft 44 is fixed to the inner wall of the second slot 11, allowing the furnace shell 40 to be deflected to one side.

[0023] like Figure 2 As shown, a first pushing mechanism 45 is inclinedly arranged on the other side of the bottom of the furnace shell 40. In actual use, the first pushing mechanism 45 is a hydraulic cylinder, and a hydraulic station is also provided on one side of the base 1. The hydraulic station is connected to the first pushing mechanism 45 through a conduit. A second connecting shaft 46 is rotatably installed at the bottom of the first pushing mechanism 45. The end of the second connecting shaft 46 is fixed to the inner wall of the second slot 11. A third connecting shaft 47 is rotatably installed at the top of the first pushing mechanism 45. The end of the third connecting shaft 47 is installed on a fixed seat 470, and the fixed seat 470 is fixed to the bottom of the furnace shell 40, providing power for the deflection of the furnace shell 40 about the first connecting shaft 44 as the axis.

[0024] Furthermore, a pad 48 is provided at the bottom of the furnace shell 40. The bottom of the pad 48 is fixed to the inner wall of the second slot 11 by a bracket. This provides upward support to the furnace shell 40 after it is placed vertically, reducing the force on the first pushing mechanism 45 and the first connecting shaft 44, and preventing the first pushing mechanism 45 and the first connecting shaft 44 from being damaged due to long-term pressure from the furnace shell 40.

[0025] It should be noted that, as Figure 4As shown, a discharge chute 42 is installed on the top side of the furnace shell 40 near the first connecting shaft 44. The discharge chute 42 is connected to the interior of the furnace shell 40. To prevent heat loss from the discharge chute 42 during melting, a sealing cover 420 is provided on the top of the discharge chute 42. One end of the sealing cover 420 is hinged to the furnace shell 40. Above the sealing cover 420, an inclined second pushing mechanism 421 is provided. The two ends of the second pushing mechanism 421 are rotatably installed in U-shaped seats. One U-shaped seat is fixed to the furnace shell 40, and the other U-shaped seat is fixed to the sealing cover 420. Thus, after sealing the discharge chute 42, the operation of the second pushing mechanism 421 can open the discharge chute 42 so that the fused magnesia molten material inside the furnace shell 40 can be poured out from the discharge chute 42 after the furnace shell 40 is tilted. In actual use, the second pushing mechanism 421 is a hydraulic cylinder, and the second pushing mechanism 421 is connected to the hydraulic station through a conduit.

[0026] To ensure precise pouring of the fused magnesia molten material, a guide channel 422 is provided below the end of the discharge trough 42 furthest from the furnace shell 40. The inner wall of the guide channel 422 is fitted with the outer wall of the discharge trough 42 with a clearance. Below the discharge trough 42, a third pushing mechanism 424 is provided. In practice, the third pushing mechanism 424 is a hydraulic cylinder and is connected to a hydraulic station through a conduit. The third pushing mechanism 424 is fixed to the discharge trough 42 by a bracket. A connecting plate 423 is installed at one end of the third pushing mechanism 424 and is fixed to the bottom of the guide channel 422. When the third pushing mechanism 424 is in operation, it can push the guide channel 422 to slide at the port of the discharge trough 42, thereby changing the flow path of the fused magnesia molten material during discharge and ensuring that the fused magnesia molten material can be fully poured into the container.

[0027] Furthermore, to ensure more stable movement of the guide channel 422 below the discharge channel 42, at least one sleeve 425 is provided parallel to the side of the third pushing mechanism 424. The sleeve 425 is fixed to the bottom of the discharge channel 42 by a bracket. A first guide shaft 426 is built into the end of the sleeve 425. The other end of the first guide shaft 426 is fixed to the connecting plate 423 to guide and limit the movement of the guide channel 422. This provides additional stress support for the guide channel 422 on the discharge channel 42, ensuring the stability of the guide channel 422 under the gravity of the fused magnesia melt. It also allows the guide channel 422 to always move in a straight line, improving the stability of the guide channel 422 during movement.

[0028] It should be noted that both the guide channel 422 and the discharge channel 42 are made of high-temperature resistant material. The connecting plate 423 can be installed at a location on the guide channel 422 that is far from the discharge channel 42. This allows the connecting plate 423, which serves as a support, to be positioned close to the center of gravity of the guide channel 422. This enables the first guide shaft 426 and the third pushing mechanism 424 to provide better support for the guide channel 422, thereby improving the stability of the guide channel 422.

[0029] When smelting natural magnesite ore, such as Figure 2 and Figure 3 As shown, a top cover 41 is provided on the top of the furnace shell 40. Two graphite electrodes 412 are installed through the top cover 41, and the top of each graphite electrode 412 is covered with a mounting base 411. The mounting base 411 is fixed to the top cover 41. After the graphite electrodes 412 are energized, the smelting operation of the natural magnesite ore in the furnace shell 40 can be completed, so as to form the fused magnesia melt required for casting.

[0030] like Figure 3 and Figure 4 As shown, a fixing plate 410 is installed on the top of the mounting base 411. A first connecting frame 413 is connected to the top of the fixing plate 410. A U-shaped frame 414 with a top opening is installed on the top of the first connecting frame 413. A second connecting frame 415 is provided inside the U-shaped frame 414. Rotating shafts 416 are rotatably installed at both ends of the bottom of the second connecting frame 415. The other end of the rotating shaft 416 is fixed to the U-shaped frame 414. In actual use, the deflection direction of the second connecting frame 415 inside the U-shaped frame 414 is consistent with the deflection direction of the furnace shell 40. The second connecting frame 415 is mounted on the support member 49, and the support member 49 includes a crossbeam 490. One end of the crossbeam 490 is fixed to the second connecting frame 415, and the other end of the crossbeam 490 is placed on the rotating seat 493. The rotating seat 493 and the crossbeam 490 are rotatably connected by a rotating shaft. A first drive motor 492 is connected to the top of the rotating shaft. The first drive motor 492 is located in the first motor housing 491, and the first motor housing 491 is fixed on the crossbeam 490, allowing the crossbeam 490 to rotate on the rotating seat 493.

[0031] A fourth pushing mechanism 494 is connected to the bottom of the rotating seat 493. The fourth pushing mechanism 494 is installed on the support seat 496, and the support seat 496 is fixed on the base 1. In actual use, the fourth pushing mechanism 494 is a hydraulic cylinder. The fourth pushing mechanism 494 is connected to the hydraulic station through a conduit, so that the rotating seat 493 can be lifted and lowered. With the rotation of the crossbeam 490, the top cover 41 can be lifted and rotated above the furnace shell 40, so as to facilitate opening the top cover 41 and pouring the natural magnesite ore into the furnace shell 40.

[0032] Specifically, in actual use, a material conveying device such as a hoist can be installed on one side of the base 1 to convey natural magnesite ore into the furnace shell 40.

[0033] Furthermore, in order to make the lifting and lowering of the rotating seat 493 more stable, at least one second guide shaft 495 is provided parallel to the side of the fourth push mechanism 494. The top of the second guide shaft 495 is fixed to the rotating seat 493, and the bottom of the second guide shaft 495 slides through the support seat 496.

[0034] It should be further explained that a torsion spring 417 is also fitted on the rotating shaft 416. One end of the torsion spring 417 is fixed on the U-shaped frame 414, and the other end of the torsion spring 417 is fixed on the second connecting frame 415. This limits the rotation of the second connecting frame 415 within the U-shaped frame 414, preventing the top cover 41 from swinging or shaking at a large angle after it is lifted, which would cause the top cover 41 to fail to align with the furnace shell 40 when it falls. In addition, a sleeve 418 is fitted on the rotating shaft 416, and the torsion spring 417 is placed in the sleeve 418. One end of the sleeve 418 is fixed on the second connecting frame 415, and the other end of the sleeve 418 is rotatably connected to the U-shaped frame 414 to protect the torsion spring 417.

[0035] like Figure 1 As shown, a transfer device 2 is provided above the end of the base 1 away from the electric arc furnace 4. The transfer device 2 includes an elliptical support frame 20, a fixed frame 21 is provided in the middle of the support frame 20, and the fixed frame 21 is fixed to the base 1. An elliptical electric slide rail 200 is installed at the bottom of the support frame 20, and at least two electric sliders 201 are slidably installed on the electric slide rail 200. A suspension device 22 is provided at the bottom of the electric sliders 201, and a forming mold 3 is suspended at the lower end of the suspension device 22. The forming mold 3 includes a sand mold shell 30. In this way, at least two sand mold shells 30 are operated during the casting process, so that after one sand mold shell 30 is cast and sent out, another sand mold shell 30 is immediately added to achieve continuous casting process, improve the continuous production capacity of the entire device, shorten the batch production cycle time, and improve the efficiency of casting and molding of fused magnesia.

[0036] Specifically, such as Figure 7 and Figure 8As shown, the suspension device 22 includes a support plate 220, which is fixed to an electric slider 201. A linear motor 221 is installed at the bottom of the support plate 220. The slide rail of the linear motor 221 is fixed to the support plate 220 along the length of the base 1. An electric hoist 224 is installed on the slider of the linear motor 221, allowing the electric hoist 224 to move in a straight line, i.e., to move towards or away from the electric arc furnace 4. A second motor housing 225 is installed on the rope of the electric hoist 224. A second drive motor 2250 is installed inside the second motor housing 225. The drive shaft of the machine 2250 passes through the second motor housing 225 and is connected to the hook 226. The drive shaft of the second drive motor 2250 is rotatably connected to the second motor housing 225. Thus, when using the hook 226 to lift the sand mold shell 30, the orientation of the hook 226 can be adjusted. With the movement of the electric slider 201 on the electric slide rail 200 and the movement of the electric hoist 224 on the linear motor 221, the hook 226 can be hung on the sand mold shell 30 or removed from the sand mold shell 30 without manual operation, thus improving the intelligence level of loading and unloading the sand mold shell 30.

[0037] like Figure 9 As shown, a support cover 2251 with a top opening is provided at the bottom of the second motor housing 225, meaning the bottom of the second motor housing 225 is placed inside the support cover 2251. The top of the hook 226 passes through the support cover 2251, and the two are rotatably connected. A counterweight 227 is installed on the outer wall of the support cover 2251 to increase the overall weight of the hook 226, preventing the hook 226 from shaking significantly when moving, which would affect the operation of the hook 226 on the sand mold shell 30. In addition, a sliding groove 2252 is provided along the outer wall of the second motor housing 225, and a limiting slider 2253 is provided in the sliding groove 2252. The limiting slider 2253 is fixed to the support cover 2251, providing additional support for the connection between the hook 226 and the second drive motor 2250, preventing the hook 226 from generating excessive pulling force on the second drive motor 2250 after suspending the sand mold shell 30, which would damage the second drive motor 2250.

[0038] Furthermore, such as Figure 7 and Figure 8 As shown, at least one support slide rail 222 is provided on the side of the linear motor 221. The support slide rail 222 is fixed on the support plate 220, and a support slider 223 is slidably installed on the support slide rail 222. The support slider 223 is connected to the electric hoist 224 through a bracket, providing additional stress support for the installation of the electric hoist 224 on the linear motor 221, and avoiding damage to the linear motor 221 due to excessive overall load on the electric hoist 224.

[0039] It should be noted that, as Figure 8 and Figure 10 As shown, a connecting post 31 is provided on the side edge of the sand mold shell 30, and a strip-shaped receiving groove 32 is opened on the side of the connecting post 31 near the sand mold shell 30. A movable seat 33 is slidably installed along the outer wall of the sand mold shell 30 and is placed in the receiving groove 32. A fixed shaft 34 is installed on the top of the corner of the movable seat 33. The top of the fixed shaft 34 passes through the connecting post 31 and is connected to the mounting frame 35. An arc-shaped bearing seat 36 is provided on the top of the mounting frame 35. In use, the hook 226 can pass through the bearing seat 36 and be placed inside the bearing seat 36, thereby achieving electrical connection. The hoist 224 lifts the hook 226, which in turn lifts the sand mold shell 30. To ensure the stability of the hook 226 within the support base 36, a limiting groove 37 corresponding to the hook 226 is provided on the inner top of the support base 36. Inclined slopes are also provided on both sides of the top of the support base 36. After the hook 226 is placed within the support base 36, as the electric hoist 224 pulls up the hook 226, the hook 226 will fall into the limiting groove 37 along the slope, thus stabilizing the hook 226 within the support base 36 and reducing the shaking of the sand mold shell 30 during movement.

[0040] To facilitate the handling of the sand mold shell 30 during loading and unloading, such as Figure 2 As shown, a first slot 10 is provided on the end of the base 1. The first slot 10 corresponds to the support frame 20. That is, the worker can use a trolley to move the sand mold shell 30 and place the sand mold shell 30 in the first slot 10. The hook 226 can lift the sand mold shell 30 when it is lowered. The cast sand mold shell 30 can also be transferred along the electric slide rail 200 and placed in the first slot 10, and then placed on the trolley to be taken away.

[0041] Specifically, in use, several sand mold shells 30 are placed one by one on the corresponding hooks 226. As the sand mold shells 30 rotate to the side closer to the electric arc furnace 4, the electric hoist 224 lowers the sand mold shells 30, allowing them to fall onto the base 1. The base 1 has a placement groove 12, in which the sand mold shells 30 fall. Then, the electric arc furnace 4 is tilted by the first pushing mechanism 45. With the help of the linear motor 221 and the third pushing mechanism 424, the relative position between the guide groove 422 and the sand mold shells 30 can be adjusted, allowing the fused magnesia to melt. The material can be precisely poured into the sand mold shell 30 to complete the pouring. Then, the sealing cover 420 can be opened to start pouring. A support plate 13 is installed in the placement groove 12. A weighing sensor is installed at the bottom of the support plate 13. The weighing sensor is set at the bottom of the placement groove 12 to weigh the sand mold shell 30 during the pouring process, so as to ensure the accuracy of the amount of fused magnesia molten material poured into the sand mold shell 30. After the pouring is completed, the sealing cover 420 can be closed, the sand mold shell 30 can be lifted and transferred to the first slot 10 for removal, and then the pouring of the next sand mold shell 30 can begin.

[0042] Furthermore, after the sand mold shell 30 is placed on the support plate 13, two cavities 14 are opened on the top of the base 1. The two cavities 14 are arranged on both sides of the placement groove 12, and clamping plates 15 are provided on both sides above the support plate 13. The two clamping plates 15 are connected to a fifth pushing mechanism 16 on the side that is relatively far apart. The fifth pushing mechanism 16 is fixed in the cavity 14. In actual use, the fifth pushing mechanism 16 is a hydraulic cylinder, and the fifth pushing mechanism 16 is connected to the hydraulic station through a conduit. In this way, the sand mold shell 30 placed on the support plate 13 can be clamped and stabilized, reducing the impact force when the molten magnesia falls into the sand mold shell 30, preventing the sand mold shell 30 from shaking and causing the molten magnesia to spill out from the port of the sand mold shell 30.

[0043] At least one third guide shaft 17 is provided parallel to the side of the fifth pushing mechanism 16. One end of the third guide shaft 17 is fixed to the clamping plate 15, and the other end of the third guide shaft 17 slides through the side of the placement groove 12 and is placed in the cavity 14 to limit the linear movement of the clamping plate 15 and ensure the stability of the movement of the clamping plate 15. In addition, a laser rangefinder 18 is provided on the top of the side of the clamping plate 15 away from the fifth pushing mechanism 16, so as to accurately determine the fit of the clamping plate 15 on the sand mold shell 30, so as to prevent the fifth pushing mechanism 16 from continuously acting on the clamping plate 15 and causing damage to the fifth pushing mechanism 16 due to the reaction force.

[0044] During the pouring process, in order to facilitate the determination of whether there is any deviation in the pouring, a high-definition camera 228 is installed on one side of the mounting frame 35. The high-definition camera 228 is connected to the counterweight block 227 through the third connecting frame 229, so as to observe the port area of ​​the sand mold shell 30. This not only facilitates the determination of the position between the guide channel 422 and the sand mold shell 30, but also allows for the observation and monitoring of the pouring process (i.e., the process of fused magnesia falling into the sand mold shell 30).

[0045] Specifically, a control box 5 is installed on the side of the support base 496. The control box 5 contains a controller, which is connected to the hydraulic station, the first drive motor 492, the second drive motor 2250, the graphite electrode 412, the electric slide rail 200, the electric hoist 224, the linear motor 221, the high-definition camera 228, and the weighing sensor via wires. In actual use, the controller is one of the following: a PLC logic controller, a control motherboard, or a control host. The control box 5 also contains a wireless transceiver, which can connect to the worker's mobile phone or tablet via 4G, 5G, WiFi, Bluetooth, and other wireless signals, making it convenient for the worker to control the entire device remotely.

[0046] It should be noted that two spaced electrode plates are arranged along the support frame 20, and two pole posts are arranged on the support plate 220. The pole posts correspond one-to-one with the electrode plates. The electrode plates are connected to the controller via wires, and the pole posts are connected to the electric hoist 224, linear motor 221, and high-definition camera 228 via wires, respectively. This provides power and signal transmission to the electric hoist 224, linear motor 221, and high-definition camera 228, preventing the wires from becoming tangled as the support plate 220 moves along the support frame 20, which would increase the probability of wire damage and affect the use of the electric hoist 224, linear motor 221, and high-definition camera 228.

[0047] The production method based on electrofused magnesia melt casting is as follows: S1. Material preparation: Suspend multiple molding molds 3 loaded with sand molds on hooks 226 of each suspension device 22 of the transfer device 2 in sequence. S2, Melting and Transfer: Control the electric arc furnace 4 to melt the raw materials, and at the same time control the transfer device 2 to move a suspension device 22 with a forming mold 3 suspended to the casting station on the side of the electric arc furnace 4. S3. Positioning and clamping: Control the electric hoist 224 of the suspension device 22 to descend, place the sand mold shell 30 in the placement groove 12 of the base 1, and clamp and fix it by the clamping plate 15. S4. Precise casting: Control the tilting of the furnace shell 40 of the electric arc furnace 4 so that the molten magnesia flows into the sand mold through the discharge channel 42 and the guide channel 422; monitor the casting volume through the weighing sensor and stop casting after the set value is reached; S5. Transfer and Cooling: After the casting is completed, the control clamp 15 is released, the electric hoist 224 lifts the cast sand mold shell 30, and the transfer device 2 moves it out of the casting station and sends it to the cooling or unloading area. S6. Cyclic replenishment: At the same time or after step S5, control the transfer device 2 to move the suspension device 22 of the next empty molding die to the pouring station, and repeat steps S3-S5. S7. Unloading and Recycling: Remove the cooled casting along with the sand mold shell 30 from the suspension device 22, and install a new empty sand mold shell 30 onto the suspension device 22 for the next cycle.

[0048] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific structures and characteristics in the solutions is not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or its practicality.

Claims

1. An electrofused magnesia melt cast forming apparatus characterized by: Includes a base, a long strip-shaped base, an electric arc furnace for smelting natural magnesite ore is set at the top of one end of the base, and a transfer device is set at the top of the other end of the base, and at least two spaced-apart suspension devices are set on the transfer device, and each suspension device is set with a forming mold. An electric arc furnace includes a furnace shell, a top cover, and supporting components; The transfer device includes a support frame, an electric slide rail, and an electric slider; The suspension device includes an electric hoist and a hook; The molding die includes a sand mold shell; It also includes a control box, which is mounted on the support and contains a controller.

2. The electrofused magnesia melt casting and molding apparatus according to claim 1, characterized in that: A second slot is provided at one end of the base near the electric arc furnace. The second slot corresponds to the electric arc furnace. A connecting seat is installed at the bottom of the furnace shell near the transfer device. A first connecting shaft is rotatably installed at both ends of the connecting seat, and the other end of the first connecting shaft is fixed to the inner wall of the second slot. A first pushing mechanism is provided at the other end of the bottom of the furnace shell. The first pushing mechanism is a hydraulic cylinder. A hydraulic station is provided on one side of the base. The hydraulic station is connected to the first pushing mechanism through a conduit and is connected to the controller through a wire. A second connecting shaft is rotatably installed at the bottom of the first pushing mechanism. The other end of the second connecting shaft is fixed to the inner wall of the second slot. A third connecting shaft is rotatably installed at the top of the first pushing mechanism. A fixed seat is installed at the other end of the third connecting shaft and is connected to the bottom of the furnace shell. A pad is also provided at the bottom of the furnace shell. The pad is placed in the second slot and is fixed to the inner wall of the second slot by a bracket.

3. The electrofused magnesia melt casting and molding apparatus according to claim 2, characterized in that: A discharge chute is provided on the top of the furnace shell near the first connecting shaft. The discharge chute is connected to the inside of the furnace shell. A sealing cover is provided on the top of the discharge chute 42. One end of the sealing cover is hinged to the outer wall of the furnace shell. A second pushing mechanism is provided above the sealing cover. The second pushing mechanism is a hydraulic cylinder and is connected to the hydraulic station through a conduit. The ends of the second pushing mechanism are rotatably installed in U-shaped seats through a rotating shaft. One U-shaped seat is fixed to the furnace shell, and the other U-shaped seat is fixed to the sealing cover. Below the discharge chute, there is a guide chute. The frontal projection of the discharge chute is located in the guide chute, and there is a clearance fit between the discharge chute and the guide chute. Below the discharge chute, there is a third pushing mechanism, which is a hydraulic cylinder. The third pushing mechanism is connected to the hydraulic station through a conduit. A connecting plate is installed at one end of the third pushing mechanism, and the connecting plate is fixed to the bottom of the guide chute. At least one sleeve is provided parallel to the side of the third pushing mechanism. The sleeve is fixed to the bottom of the discharge trough by a bracket. A first guide shaft is installed inside the sleeve, and one end of the first guide shaft is fixed to the connecting plate.

4. The electrofused magnesia melt casting and molding apparatus according to claim 3, characterized in that: The furnace shell is an open-top shell, and the top cover is placed on the top of the furnace shell. Two graphite electrodes are installed through the top cover. The graphite electrodes are connected to the controller through wires. Both graphite electrodes are set on the mounting base, and the mounting base is fixed to the top cover. A fixing plate is installed on the top of the mounting base. A first connecting frame is connected to the top of the fixing plate. A U-shaped frame is installed on the top of the first connecting frame. A second connecting frame is rotatably installed in the U-shaped frame through a rotating shaft. The top of the second connecting frame is installed on the support. A torsion spring is fitted on the rotating shaft. One end of the torsion spring is fixed to the U-shaped frame, and the other end of the torsion spring is fixed to the second connecting frame. A sleeve is also fitted on the rotating shaft. One end of the sleeve is fixed to the second connecting frame, and the other end of the sleeve is rotatably connected to the U-shaped frame. The support includes a crossbeam, one end of which is fixed to a second connecting frame, and the other end of which is rotatably mounted on a rotating seat via a rotating shaft. A first drive motor is connected to the top of the rotating shaft and is placed in a first motor housing. The first motor is fixed to the crossbeam and is connected to a controller via a wire. A fourth pushing mechanism is installed at the bottom of the rotating seat. The fourth pushing mechanism is a hydraulic cylinder and is connected to a hydraulic station via a conduit. The fourth pushing mechanism is mounted on the support seat and the base, while the control box is mounted on the side of the support seat. At least one second guide shaft is provided parallel to the side of the fourth push mechanism. The top of the second guide shaft is fixed to the rotating seat, and the bottom of the second guide shaft slides through the support seat.

5. The electrofused magnesia melt casting and molding apparatus according to claim 4, characterized in that: A first slot is provided at the end of the base away from the second slot. The support frame is an elliptical frame, and a fixed frame is provided inside the support frame. The fixed frame is fixed to the base. An electric slide rail is installed along the bottom of the support frame. At least two electric sliders are slidably installed on the electric slide rail. The electric slide rail is connected to the controller through a wire. The suspension device is correspondingly set on the electric slider. Two electrode plates are arranged at intervals along the support frame, and two pole posts are provided on the suspension device. The pole posts are in sliding contact with the electrode plates, and the electrode plates are connected to the controller through wires.

6. The electrofused magnesia melt casting and molding apparatus according to claim 5, characterized in that: The electric hoist is mounted on a linear motor, which is installed on a support plate. The support plate is fixed to the electric slider. A second motor box is installed on the rope of the electric hoist. A second drive motor is installed inside the second motor box. The output end of the second drive motor passes through the second motor box and is connected to a hook. The forming mold is hung on the hook. The linear motor, the electric hoist, and the second drive motor are all connected to the poles through wires. At least one support slide rail is provided parallel to the side of the linear motor. The support slide rail is fixed to the support plate, and a support slider is slidably installed on the support slide rail. The support slider is fixed to the electric hoist by a bracket. A support cover with a top opening is fitted onto the bottom of the second motor housing. A counterweight is installed on the outer wall of the support cover, and a sliding groove is provided along the outer wall of the second motor housing. A limit slider is installed in the sliding groove and is fixed to the support cover.

7. The electrofused magnesia melt casting and molding apparatus according to claim 6, characterized in that: A connecting column is installed on the side of the sand mold shell. A receiving groove is opened on the side of the connecting column near the sand mold shell. A movable seat is provided along the outer wall of the sand mold shell. The movable seat passes through the receiving groove. A fixed shaft is installed at the top of the corner of the movable seat. The top of the fixed shaft slides through the connecting column and is installed on the mounting frame. An arc-shaped bearing seat is provided at the top of the mounting frame. A limiting groove corresponding to the hook is opened in the top of the bearing seat. A high-definition camera is installed on the upper side of the mounting bracket. The high-definition camera is connected to the pole via a wire, and the high-definition camera is fixed to the counterweight via a third connecting bracket.

8. The electrofused magnesia melt casting and molding apparatus according to claim 7, characterized in that: A placement slot is provided on the base, which corresponds to the sand mold shell. A support plate is placed inside the placement slot, and a weighing sensor is installed at the bottom of the support plate. The weighing sensor is connected to the controller through a wire and is located at the bottom of the placement slot.

9. The electrofused magnesia melt casting and molding apparatus according to claim 8, characterized in that: Two cavities are also provided on the base, with the two cavities arranged on both sides of the placement slot. Clamping plates are provided on both sides of the placement slot, and the clamping plates are located above the bearing plate. A fifth pushing mechanism is vertically installed in the middle of the side where the two clamping plates are relatively far apart. The fifth pushing mechanism is a hydraulic cylinder, and the fifth pushing mechanism is connected to the hydraulic station through a conduit. The fifth pushing mechanism is located in the cavity. At least one third guide shaft is provided parallel to the side of the fifth push mechanism. One end of the third guide shaft is fixed to the clamp plate, and the other end of the third guide shaft slides through the side wall of the placement groove and is placed in the cavity.

10. A casting apparatus for fused magnesia melt according to any one of claims 1-9, characterized in that: The production method based on electrofused magnesia melt casting is as follows: S1. Material preparation: Suspend multiple molding dies loaded with sand molds on the hooks of each suspension device of the transfer device in sequence; S2, Melting and Transfer: Control the electric arc furnace to melt the raw materials, and at the same time control the transfer device to move a suspension device with a forming mold to the casting station on the side of the electric arc furnace. S3. Positioning and clamping: Control the electric hoist of the suspension device to descend, place the sand mold shell into the placement groove of the base, and clamp it in place by clamping plate; S4. Precise casting: Control the tilt of the electric arc furnace shell so that the molten magnesia flows into the sand mold through the discharge chute and guide chute; monitor the casting volume through the weighing sensor and stop casting when the set value is reached; S5. Transfer and Cooling: After the casting is completed, the control clamp is released, the electric hoist lifts the cast sand mold shell, and the transfer device moves it out of the casting station and sends it to the cooling or unloading area. S6. Cyclic replenishment: At the same time or after step S5, control the transfer device to move the suspension device of the next empty molding mold to the pouring station, and repeat steps S3-S5. S7. Unloading and Recycling: Remove the cooled casting along with the sand mold shell from the suspension device, and install a new empty sand mold shell onto the suspension device for the next cycle.

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