Slag beating device for aluminum electrolysis casting process

Abstract

The invention relates to electrolytic aluminum, and provides a slag removal device for an aluminum electrolysis casting process, which comprises an inner coaming, an outer coaming arranged on the outer side of the inner coaming, an annular slag removal groove arranged between the inner coaming and the outer coaming, a slag removal device arranged in the slag removal groove, and a first driving device for driving the slag removal device to do circular motion along the slag removal groove, the slag removal device comprises a horizontal S-shaped flow guide plate, a U-shaped filter plate which is arranged at the tail part of the flow guide plate and is provided with an upward opening, a slag receiving box arranged above the filter plate, a rotating shaft arranged on the upper side of the tail part of the flow guide plate, a plurality of slag salvaging rods arranged on the rotating shaft, an inner baffle plate which is arranged on the flow guide plate and is close to the inner surrounding plate, and an outer baffle plate which is arranged on the flow guide plate and is close to the outer surrounding plate; the axis of the rotating shaft is perpendicular to the movement direction of the guide plate, and the slag salvaging rods are distributed in the length direction of the rotating shaft. According to the slag beating device for the aluminum electrolysis casting process, dross on the surface of molten aluminum during electrolytic aluminum casting can be efficiently removed, and manual participation is remarkably reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum electrolysis, and in particular to a slag removal device for an aluminum electrolysis casting process. Background Art

[0002] Electrolytic aluminum is aluminum produced through electrolysis. Modern electrolytic aluminum production utilizes cryolite-alumina molten salt electrolysis. Molten cryolite serves as the solvent, alumina as the solute, carbonite as the anode, and molten aluminum as the cathode. A strong direct current is applied to the electrodes within the electrolytic cell at temperatures between 950°C and 970°C, and an electrochemical reaction occurs.

[0003] Electrolytic aluminum not only produces molten aluminum, but also produces a large amount of slag floating on the surface of the molten aluminum, namely aluminum ash, during the casting process.

[0004] Compared to molten aluminum, aluminum ash is an impurity that needs to be removed in a timely manner (called slag removal, slag removal, etc.), and it needs to be removed before the molten aluminum is packaged and solidified, otherwise it will significantly affect the purity of the aluminum. Common aluminum ash and other slag removal is mainly manual operation, which uses a scoop net (made of high melting point metal) to remove the slag floating on the surface of the molten aluminum. However, manual cleaning is labor-intensive (the scoop net is heavy and there is a lot of slag), dangerous (high temperature environment, and contains a large amount of toxic and harmful gases), and ineffective (it is difficult to completely clean small particles of slag). There are also mechanical slag removal methods, such as using a robotic arm with a steel claw to reach into the molten aluminum to remove slag, but this type of mechanical slag removal is less efficient. Usually, a large amount of slag and molten aluminum is grabbed at one time, and then the molten aluminum flows back to the molten aluminum tank from the steel claw. However, a large amount of aluminum will still remain in the slag, and it is very troublesome to extract it again, resulting in a large degree of waste. In summary, a more efficient and safe slag removal device can be designed. Summary of the Invention

[0005] The object of the present invention is to provide a slag removal device for an aluminum electrolytic casting process, which can efficiently remove slag from the surface of molten aluminum obtained by electrolytic aluminum and significantly reduce manual participation.

[0006] The embodiment of the present invention is achieved through the following technical solutions: the slag removing device for aluminum electrolytic casting process of the present invention includes an inner enclosure plate, an outer enclosure plate arranged on the outside of the inner enclosure plate, an annular slag removing groove arranged between the inner enclosure plate and the outer enclosure plate, a slag removing device arranged in the slag removing groove, and a first driving device for driving the slag removing device to perform circular motion along the slag removing groove; the slag removing device includes a horizontal S-shaped guide plate, a U-shaped filter plate with an upward opening arranged at the tail of the guide plate, a slag receiving box arranged above the filter plate, a rotating shaft arranged on the upper side of the tail of the guide plate, a plurality of slag scooping rods arranged on the rotating shaft, an inner baffle plate arranged on the guide plate close to the inner enclosure plate, and an outer baffle plate arranged on the guide plate close to the outer enclosure plate; the axis of the rotating shaft is perpendicular to the movement direction of the guide plate, and the plurality of slag scooping rods are distributed along the length direction of the rotating shaft.

[0007] Furthermore, it also includes a lifting device for driving the slag removal device to rise and fall; the lifting device includes a first lifting device provided on the inner enclosure plate, and a second lifting device provided on the outer enclosure plate; the first lifting device includes an annular first lifting plate sleeved on the outer side of the inner enclosure plate, a plurality of first support plates connected to the first lifting plate, a first elevator connected to the first support plate, and a first slide groove provided on the side of the inner baffle plate close to the inner enclosure plate; the first lifting plate is slidably provided in the first slide groove; the second lifting device includes an annular second lifting plate provided on the inner side of the outer enclosure plate, a plurality of second support plates connected to the second lifting plate, a second elevator connected to the second support plate, and a second slide groove provided on the side of the outer baffle plate close to the outer enclosure plate; the second lifting plate is slidably provided in the second slide groove.

[0008] Furthermore, both ends of the rotating shaft pass through the inner baffle and the outer baffle respectively and are rotatably connected to the inner baffle and the outer baffle; an annular rack is provided on the upper side of the first lifting plate and the second lifting plate, and gears are provided at both ends of the rotating shaft; the gears are engaged with the racks.

[0009] Furthermore, the first driving device includes a motor vertically arranged in the inner enclosure plate, a connecting plate for connecting the inner baffle and the outer baffle, a driving rod arranged on the connecting plate, and a driving plate for connecting the driving rod and the motor output shaft; the driving plate is rotationally connected to the driving rod.

[0010] Furthermore, the first support plate is L-shaped, and one end of the first support plate away from the first lifting plate is connected to the outer side wall of the motor.

[0011] and a second drive mechanism for driving the slag box to reciprocate in the vertical direction. The second drive mechanism comprises a shift rod provided on both sides of the slag box, a long strip through hole provided on the inner baffle plate and the outer baffle plate for the shift rod to pass through, a first annular fluctuation ring provided on the outer side of the inner enclosure plate, and a second fluctuation ring provided on the inner side of the outer enclosure plate; the first fluctuation ring is connected to a plurality of the first support plates, and the second fluctuation ring is connected to a plurality of the second support plates; a fluctuation groove is provided on the outer side of the first fluctuation ring and the inner side of the second fluctuation ring, a pair of shift rods are slidably provided in a pair of the fluctuation grooves respectively; a third slide groove is provided on a side of the inner baffle plate close to the inner enclosure plate, the first fluctuation ring is slidably provided in the third slide groove; a fourth slide groove is provided on a side of the outer baffle plate close to the outer enclosure plate, and the second fluctuation ring is slidably provided in the fourth slide groove; the fluctuation groove comprises a plurality of straight grooves and a plurality of U-shaped grooves; the straight grooves and the U-shaped grooves are alternately arranged and connected to each other.

[0012] Furthermore, fifth chutes are provided on both sides of the slag receiving box in the vertical direction, and sliding bars are provided on the sides where the inner baffle plate and the outer baffle plate are close to each other, and one of the sliding bars is slidably arranged in one of the chutes.

[0013] Furthermore, the filter plate is detachably connected to the guide plate.

[0014] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects: when the slag removing device for the aluminum electrolytic casting process of the present invention is used, the high-temperature aluminum liquid or the aluminum liquid containing a large amount of slag generated by the electrolytic aluminum casting is discharged into the slag removing tank. After standing for a certain period of time, the first driving device is used to drive the slag removing device to perform circular motion along the slag removing tank, and the slag floating on the surface of the aluminum liquid is picked up during the movement. During the slag removing process of the slag removing device, the feeding and discharging operations can also be performed slowly and synchronously. When the slag removal device is removing slag, part of the guide plate is immersed in the molten aluminum (located below the dross), and part is exposed on the surface of the molten aluminum. As the slag removal device moves, the guide plate pushes the molten aluminum containing a large amount of dross to the upper side of the guide plate. When the slag passes through the rotating shaft and the slag scoop rod, the rapidly rotating slag scoop rod extends into the slag and throws the slag into the slag receiving box at the rear. Due to its fluidity, the molten aluminum is not carried away by the slag scoop rod. The remaining molten aluminum flows into the filter plate at the rear, where the fine slag is filtered and then flows back to the slag removal tank. This not only automates the slag removal operation without manual intervention, but also improves the efficiency of dross removal in the molten aluminum and enables continuous feeding and discharging operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 A schematic diagram of the structure of a slag removal device for an aluminum electrolytic casting process according to an embodiment of the present invention;

[0017] Figure 2 A schematic structural diagram of a second lifting device provided in an embodiment of the present invention;

[0018] Figure 3 A schematic structural diagram of a slag removal device according to an embodiment of the present invention;

[0019] Figure 4 A schematic diagram of the partially expanded structure of the interior of a slag removal device provided in an embodiment of the present invention;

[0020] Figure 5 A schematic diagram of the internal structure of a slag removal device provided in an embodiment of the present invention;

[0021] Figure 6 A schematic structural diagram of a slag receiving box portion provided in an embodiment of the present invention;

[0022] Figure 7 A schematic structural diagram of a slag scooping rod portion provided in an embodiment of the present invention;

[0023] Figure 8 for Figure 2 Enlarged view of part A.

[0024] Icons: 11-inner plate, 12-outer plate, 13-slag trough, 21-guide plate, 22-filter plate, 23-slag box, 24-rotating shaft, 25-slag scoop rod, 26-inner baffle, 27-outer baffle, 28-connecting plate, 29-first chute, 210-second chute, 211-third chute, 212-fourth chute, 213-fifth chute, 214-slide, 215-shift rod, 216-through hole, 31-first lifting plate, 32-first support plate, 33-first elevator, 34-second lifting plate, 35-second support plate, 36-second elevator, 37-rack, 38-gear, 41-first undulating ring, 42-straight groove, 43-U-shaped groove, 44-second undulating ring, 51-motor, 52-drive plate, 53-drive rod. DETAILED DESCRIPTION

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0028] In the description of the present invention, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] It should also be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific contexts.

[0030] Example

[0031] The following is further described in conjunction with specific embodiments. Figure 1 -Attached Figure 8As shown, the slag removing device for the aluminum electrolytic casting process of this embodiment includes an inner enclosure plate 11, an outer plate 12 provided on the outer side of the inner enclosure plate 11, an annular slag removing groove 13 provided between the inner enclosure plate 11 and the outer plate 12, a slag removing device provided in the slag removing groove 13, and a first driving device for driving the slag removing device to perform circular motion along the slag removing groove 13; the slag removing device includes a horizontal S-shaped guide plate 21, a U-shaped filter plate 22 with an upward opening provided at the tail end of the guide plate 21, a slag receiving box 23 provided above the filter plate 22, a rotating shaft 24 provided on the upper side of the tail end of the guide plate 21, a plurality of slag scooping rods 25 provided on the rotating shaft 24, an inner baffle 26 provided on the guide plate 21 near the inner enclosure plate 11, and an outer baffle 27 provided on the guide plate 21 near the outer plate 12; the axis of the rotating shaft 24 is perpendicular to the movement direction of the guide plate 21, and the plurality of slag scooping rods 25 are distributed along the length direction of the rotating shaft 24. Specifically, during use, the high-temperature molten aluminum or molten aluminum containing a large amount of slag generated during the electrolytic aluminum casting process is discharged into the slag removal trough 13. After a certain period of standing, the first driving device is used to drive the slag removal device to move in a circular motion along the slag removal trough 13, and the slag floating on the surface of the molten aluminum is picked up during the movement. During the slag removal process of the slag removal device, the feeding and discharging operations can also be performed slowly and synchronously. During slag removal, the deflector plate 21 partially submerges in the molten aluminum (below the dross) and partially protrudes from the surface. As the deslag removal device moves, the deflector plate 21 pushes the molten aluminum containing a large amount of dross to the upper side of the deflector plate 21. As the dross passes through the rotating shaft 24 and the slag scooping rod 25, the rapidly rotating slag scooping rod 25 penetrates the dross and throws it into the slag receiving box 23 at the rear. Due to its fluidity, the molten aluminum is not carried away by the slag scooping rod 25. The remaining molten aluminum flows into the filter plate 22 at the rear, where the fine slag is filtered and then flows back into the slag removal trough 13. This not only automates the slag removal operation without manual intervention, but also improves the efficiency of scooping dross from the molten aluminum and enables continuous feeding and discharging operations.

[0032] In this embodiment, a lifting device for driving the slag removal device to rise and fall is also included; the lifting device includes a first lifting device provided on the inner panel 11, and a second lifting device provided on the outer panel 12; the first lifting device includes an annular first lifting plate 31 sleeved on the outer side of the inner panel 11, a plurality of first support plates 32 connected to the first lifting plate 31, a first elevator 33 connected to the first support plate 32, and a first slide groove 29 provided on the side of the inner baffle 26 close to the inner panel 11; the first lifting plate 31 is slidably provided in the first slide groove 29; the second lifting device includes an annular second lifting plate 34 provided on the inner side of the outer panel 12, a plurality of second support plates 35 connected to the second lifting plate 34, a second elevator 36 connected to the second support plate 35, and a second slide groove 210 provided on the side of the outer baffle 27 close to the outer panel 12; the second lifting plate 34 is slidably provided in the second slide groove 210. Specifically, multiple first and second elevators 33, 36 are provided. Multiple first and second elevators 33, 36 are synchronously raised and lowered to achieve the up and down movement of the slag removal device. This allows the height of the slag removal device to be adjusted in real time based on the amount of molten aluminum in the slag trough 13 and the thickness of the slag. The first and second elevators 33, 36 drive the first and second lifting plates 31, 34 to rise and fall by driving the first and second support plates 32, 35. Since the first and second lifting plates 31, 34 are respectively stuck in the first and second chutes 29, 210, they can also drive the inner and outer baffles 26, 27 to rise and fall through the first and second chutes 29, 210, thereby achieving the effect of driving the slag removal device to rise and fall. The first and second elevators 33, 36 can be selected according to actual conditions, and can use hydraulic presses, screw elevators, or pneumatic elevators, etc.

[0033] In this embodiment, the ends of the rotating shaft 24 pass through the inner baffle 26 and the outer baffle 27, respectively, and are rotatably connected to the inner baffle 26 and the outer baffle 27. Ring-shaped racks 37 are provided on the upper sides of the first and second lifting plates 31 and 34, and gears 38 are provided at both ends of the rotating shaft 24. The gears 38 mesh with the racks 37. Specifically, during the movement of the slag removal device as a whole, the gears 38 rotate under the action of the racks 37, thereby driving the rotating shaft 24 and the slag scooping rod 25 to rotate.

[0034] In this embodiment, the first drive device includes a motor 51 vertically mounted within the inner enclosure 11, a connecting plate 28 for connecting the inner and outer baffles 26 and 27, a drive rod 53 mounted on the connecting plate 28, and a drive plate 52 rotatably connected to the drive rod 53. Specifically, the motor 51, via the drive plate 52, drives the drive rod 53, the connecting plate 28, and the slag removal device in a circular motion along the slag trough 13. A corresponding counterweight can be provided at the end of the drive plate 52 away from the drive rod 53 to stabilize the overall motion.

[0035] In this embodiment, the first support plate 32 is L-shaped, and one end of the first support plate 32 away from the first lifting plate 31 is connected to the outer wall of the motor 51. Specifically, when the first and second lifting devices drive the slag removal device to rise and fall, the first support plate 32 also drives the motor 51 to rise and fall synchronously.

[0036] In this embodiment, a second driving device is further included for driving the slag box 23 to reciprocate in the vertical direction; the second driving device includes a shifting rod 215 provided on both sides of the slag box 23, a long strip-shaped through hole 216 provided on the inner baffle plate 26 and the outer baffle plate 27 for the shifting rod 215 to pass through, an annular first undulating ring 41 provided on the outer side of the inner plate 11, and a second undulating ring 44 provided on the inner side of the outer plate 12; the first undulating ring 41 is connected to the plurality of first support plates 32, and the second undulating ring 44 is connected to the plurality of second support plates 35; the first undulating ring 41 is connected to the plurality of first support plates 32, and the second undulating ring 44 is connected to the plurality of second support plates 35; the second undulating ring 41 is connected to the plurality of second support plates 35; the second undulating ring 44 is connected to the plurality of second support plates 35; the first undulating ring 41 is connected to the plurality of first support plates 32, and the second undulating ring 44 is connected to the plurality of second support plates 35; the second ... Fluctuation grooves are defined on the outer side of the first fluctuating ring 41 and the inner side of the second fluctuating ring 44. A pair of levers 215 slide in each of the fluctuating grooves. A third chute 211 is defined on the side of the inner baffle 26 near the inner enclosure 11, in which the first fluctuating ring 41 slides. A fourth chute 212 is defined on the side of the outer baffle 27 near the outer enclosure 12, in which the second fluctuating ring 44 slides. The fluctuating grooves include a plurality of straight grooves 42 and a plurality of U-shaped grooves 43. The straight grooves 42 and U-shaped grooves 43 are arranged alternately and interconnected. Specifically, the slag receiving box 23 serves to temporarily hold slag. Once the slag in the slag receiving box 23 reaches a certain amount, it can be manually cleaned. In addition, the slag box 23 can also be used to assist in pressing the molten aluminum on the filter plate 22 into the slag trough 13, wherein the shape of the lower side of the slag box 23 is the same as the shape of the filter plate 22 (that is, the same curvature). During the slag removal process, the molten aluminum flowing from the guide plate 21 to the filter plate 22 will gradually increase (mainly affected by the efficiency of the molten aluminum passing through the filter plate 22 and the blockage of the filter plate 22). Therefore, by providing an undulation groove on the first undulation ring 41 and the second undulation ring 44, and when the lever 215 moves in the straight groove 42 of the undulation groove, the slag box 23 is stably located above the filter plate 22. When the lever 215 enters the U-shaped groove 43, the lever 215 will drive the slag box 23 to perform a rapid descending and ascending operation. The slag box 23 descends to contact (or quickly contact) the filter plate 22, thereby being able to quickly press the molten aluminum in the filter plate 22 out of the filter plate 22, so that it flows back into the slag trough 13, thereby avoiding a large amount of molten aluminum accumulation in the filter plate 22. The first wave ring 41 and the second wave ring 44 are connected to the first support plate 32 and the second support plate 35 to achieve synchronous lifting operation with the slag removal device.

[0037] In this embodiment, both sides of the slag receiving box 23 are provided with fifth chutes 213 in the vertical direction, and a slide bar 214 is provided on the side where the inner baffle 26 and the outer baffle 27 are close to each other. Each slide bar 214 slides in a chute. Specifically, this ensures that the slag receiving box 23 can move stably in the vertical direction without deflection.

[0038] The filter plate 22 in this embodiment is detachably connected to the guide plate 21. Specifically, when the slag receiving box 23 is taken out to clean the scum, the filter plate 22 can also be taken out for cleaning.

[0039] In summary, the slag removing device for the aluminum electrolytic casting process of this embodiment, when in use, discharges the high-temperature aluminum liquid or the aluminum liquid containing a large amount of slag generated in the electrolytic aluminum casting process into the slag removing tank 13. After a certain period of standing, the first driving device is used to drive the slag removing device to perform circular motion along the slag removing tank 13, and picks up the slag floating on the surface of the aluminum liquid during the movement. During the slag removing process of the slag removing device, the feeding and discharging operations can also be performed slowly and synchronously. During slag removal, the deflector plate 21 partially submerges in the molten aluminum (below the dross) and partially protrudes from the surface. As the deslag removal device moves, the deflector plate 21 pushes the molten aluminum containing a large amount of dross to the upper side of the deflector plate 21. As the dross passes through the rotating shaft 24 and the slag scooping rod 25, the rapidly rotating slag scooping rod 25 penetrates the dross and throws it into the slag receiving box 23 at the rear. Due to its fluidity, the molten aluminum is not carried away by the slag scooping rod 25. The remaining molten aluminum flows into the filter plate 22 at the rear, where the fine slag is filtered and then flows back into the slag removal trough 13. This not only automates the slag removal operation without manual intervention, but also improves the efficiency of scooping dross from the molten aluminum and enables continuous feeding and discharging operations.

[0040] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A slag removal device for aluminum electrolytic casting process, characterized by: The invention comprises an inner plate (11), an outer plate (12) arranged outside the inner plate (11), an annular slag removal groove (13) arranged between the inner plate (11) and the outer plate (12), a slag removal device arranged in the slag removal groove (13), and a first driving device for driving the slag removal device to perform a circular motion along the slag removal groove (13); The slag removal device comprises a horizontal S-shaped guide plate (21), a U-shaped filter plate (22) with an opening facing upwards and arranged at the tail of the guide plate (21), a slag receiving box (23) arranged above the filter plate (22), a rotating shaft (24) arranged at the upper side of the tail of the guide plate (21), a plurality of slag scooping rods (25) arranged on the rotating shaft (24), an inner baffle (26) arranged on the guide plate (21) close to the inner enclosure plate (11), and an outer baffle (27) arranged on the guide plate (21) close to the outer enclosure plate (12); The axis of the rotating shaft (24) is perpendicular to the movement direction of the guide plate (21), and a plurality of slag scooping rods (25) are distributed along the length direction of the rotating shaft (24).

2. The slag removal device for aluminum electrolytic casting according to claim 1, characterized in that: It also includes a lifting device for driving the slag removal device to lift; the lifting device includes a first lifting device provided on the inner panel (11) and a second lifting device provided on the outer panel (12); The first lifting device comprises an annular first lifting plate (31) sleeved on the outer side of the inner panel (11), a plurality of first support plates (32) connected to the first lifting plate (31), a first elevator (33) connected to the first support plate (32), and a first chute (29) provided on a side of the inner baffle (26) close to the inner panel (11); the first lifting plate (31) is slidably provided in the first chute (29); The second lifting device includes an annular second lifting plate (34) arranged on the inner side of the outer plate (12), a plurality of second support plates (35) connected to the second lifting plate (34), a second elevator (36) connected to the second support plate (35), and a second slide groove (210) arranged on the side of the outer baffle (27) close to the outer plate (12); the second lifting plate (34) is slidably arranged in the second slide groove (210).

3. The slag removal device for aluminum electrolytic casting according to claim 2, characterized in that: Two ends of the rotating shaft (24) pass through the inner baffle (26) and the outer baffle (27) respectively and are rotatably connected to the inner baffle (26) and the outer baffle (27); An annular rack (37) is provided on the upper side of the first lifting plate (31) and the second lifting plate (34), and gears (38) are provided at both ends of the rotating shaft (24); the gears (38) are meshed with the racks (37).

4. The slag removal device for aluminum electrolytic casting according to claim 2, characterized in that: The first driving device includes a motor (51) vertically arranged in the inner enclosure plate (11), a connecting plate (28) for connecting the inner baffle plate (26) and the outer baffle plate (27), a driving rod (53) arranged on the connecting plate (28), and a driving plate (52) for connecting the driving rod (53) and the output shaft of the motor (51); the driving plate (52) is rotatably connected to the driving rod (53).

5. The slag removal device for aluminum electrolytic casting according to claim 4, characterized in that: The first support plate (32) is L-shaped, and one end of the first support plate (32) away from the first lifting plate (31) is connected to the outer side wall of the motor (51).

6. The slag removal device for aluminum electrolytic casting according to claim 2, characterized in that: It also includes a second driving device for driving the slag receiving box (23) to reciprocate in the vertical direction; The second driving device comprises a shifting rod (215) provided on both sides of the slag receiving box (23), a long strip-shaped through hole (216) provided on the inner baffle plate (26) and the outer baffle plate (27) for the shifting rod (215) to pass through, an annular first undulating ring (41) provided on the outer side of the inner enclosure plate (11), and a second undulating ring (44) provided on the inner side of the outer enclosure plate (12); The first undulating ring (41) is connected to the plurality of first support plates (32), and the second undulating ring (44) is connected to the plurality of second support plates (35); an undulating groove is provided on the outer side of the first undulating ring (41) and the inner side of the second undulating ring (44), and a pair of shifting rods (215) are respectively slidably disposed in the pair of undulating grooves; A third chute (211) is provided on a side of the inner baffle (26) close to the inner enclosure plate (11), and the first fluctuation ring (41) is slidably arranged in the third chute (211); a fourth chute (212) is provided on a side of the outer baffle (27) close to the outer enclosure plate (12), and the second fluctuation ring (44) is slidably arranged in the fourth chute (212); The undulating grooves include a plurality of straight grooves (42) and a plurality of U-shaped grooves (43); the straight grooves (42) and the U-shaped grooves (43) are alternately arranged and communicate with each other.

7. The slag removal device for aluminum electrolytic casting according to claim 6, characterized in that: Both sides of the slag receiving box (23) are provided with a fifth chute (213) in the vertical direction, and the sides where the inner baffle (26) and the outer baffle (27) are close to each other are provided with a slide bar (214), and one of the slide bars (214) is slidably arranged in one of the chute.

8. The slag removal device for aluminum electrolytic casting according to claim 1, characterized in that: The filter plate (22) is detachably connected to the guide plate (21).

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