An online degassing and purification device for rare earth aluminum alloy melt

Abstract

The present invention relates to the technical field of online degassing equipment, and discloses an online degassing and purification device for rare earth aluminum alloy melt, comprising a base, a degassing device, a driving mechanism and auxiliary components; the base is provided with a support seat, a guide rail and a slide seat, and the degassing device is driven to rotate by a telescopic rod to achieve zero aluminum liquid residue; the degassing device comprises a casing, a refractory brick layer and a degassing lining, and is provided with a double degassing cavity and a through-port, which cooperates with a filter pipe to improve the purification effect; the furnace cover is controlled by a lifting column, and contains a graphite electrode, an exhaust pipe and a stirring mechanism to achieve integrated heating, degassing and stirring; the shaft seat, gate valve, sealing mechanism and impurity cleaning component are optimized in design to improve structural stability, sealing and maintenance convenience; the device can remove impurities and gases in the melt, reduce residue, and is suitable for industrial continuous production.

Description

Technical Field

[0001] The invention relates to the technical field of online degassing equipment, in particular to an online degassing and purification device for a rare earth aluminum alloy melt. Background Art

[0002] In the rare earth aluminum alloy casting process, melt degassing and purification are critical to ensuring casting quality, directly impacting the alloy's mechanical properties and corrosion resistance. Currently, most aluminum alloy melt degassing devices commonly used in the industry employ fixed structures or offer only small-angle tilt adjustment. This leaves residual molten aluminum within the degassing device after casting. This residual aluminum not only wastes raw materials but also adheres to the equipment's inner walls after solidification, requiring additional cleaning during the next production run, increasing downtime and maintenance costs. Furthermore, secondary melting of the residual aluminum can produce impurities, compromising the purity of the subsequent melt.

[0003] Therefore, how to design an online degassing and purification device for rare earth aluminum alloy melt that can achieve stable rotation of the degassing device at a large angle, effectively eliminate aluminum liquid residue, and has smooth sliding adjustment and reliable transmission structure has become a technical problem that needs to be urgently solved in this field. Summary of the Invention

[0004] The purpose of the present invention is to provide an online degassing and purification device for rare earth aluminum alloy melt, so as to solve the problem that the existing degassing device mentioned in the above background technology can only be tilted and adjusted at a small angle, and aluminum liquid is easily retained inside the degassing device after casting is completed.

[0005] The technical solution adopted by the present invention is as follows: An online degassing and purification device for a rare earth aluminum alloy melt comprises a base, two symmetrically arranged first support seats are installed on the base, a first bearing seat is installed on the first support seat, and a degassing device is rotatably connected to the first bearing seat; a first guide rail is installed on the base, and the top surface of the first guide rail has ball grooves arranged at equal intervals, and linearly arranged steel balls are rollingly connected in the ball grooves, and a first slide is slidably connected to the steel balls, and the bottom surface of the first slide has ball grooves adapted to the steel balls; a U-shaped second guide rail is connected to the side surface of the first guide rail; a limit bar is connected to the side surface of the first slide, and the limit bar is slidably adapted to the second guide rail; the first slide is driven by a first telescopic rod; a first cylinder seat is installed on the first slide, and a second telescopic rod is hinged on the first cylinder seat, and the piston end of the second telescopic rod is rotatably connected to a shaft seat, and the shaft seat is connected to the side wall of the degassing device and deviates from the position of the first bearing seat.

[0006] The shaft seat comprises a shaft with a T-shaped cross section. The small diameter end of the shaft is connected with a square plate for connecting a degassing device. Ribs of equal angles are arranged at the angle between the square plate and the shaft.

[0007] Two symmetrical support rods are installed on the side of the furnace cover, and the support rods are connected to the alignment rods adapted to the first channel steel.

[0008] There are multiple layers of heat shields in the exhaust pipe; the piston end of the third telescopic rod is connected to the heat-resistant rod, the lower end of the rod is connected to the horizontal plate, the horizontal plate is connected to the annular scraper adapted to the degassing lining, the inner wall of the scraper is connected to the impurity storage groove, and there are filter holes at the bottom of the groove.

[0009] The impurity storage tank is slidably connected to the guide rod, and there are limit parts at both ends of the guide rod. Ear seats are slidably connected to the rod, and a scraping mechanism is installed between the ear seats. The guide rod is covered with a third spring located below the impurity storage tank and a fourth spring above the ear seat; the scraping mechanism includes a first and a second C-shaped seat fixed by a plug socket, the two C-shaped seats are adapted to the graphite electrode and have T-shaped holes of equal angles, the scraping rod is slidably connected in the hole, and a fifth spring for squeezing the scraping rod is installed in the hole, and the port is threaded and connected to a blocking cap.

[0010] The center of the stirring rod has an axial hole, and a pull rod is installed in the hole. The upper end of the pull rod is connected to the shaft cover through a ball bearing, and the shaft cover is driven by a fourth telescopic rod fixed on the air chamber positioning seat; the lower end of the pull rod extends to the outside of the lower cover, and the pull rod outside the lower cover is slidably connected to the pull plate, and the pull plate is slidably connected to two symmetrical guide bars, and the upper ends of the guide bars are connected to the stirring head; the top surface of the pull plate is equipped with a push rod that is slidably connected to the stirring head, and the push rod is located in the gap between adjacent air holes, and the upper end is connected to a cover body that is slidably adapted to the stirring rod and adapted to the stirring head.

[0011] The cover is connected to a conduit that is slidably adapted to the stirring rod, the conduit is connected to a second sliding seat, the top surface of the sliding seat is connected to a first hinged seat at an equal angle, the hinged seat is hinged to the first connecting rod, the free end of the connecting rod is hinged to the second connecting rod, and the hinge point of the two connecting rods is located in the middle section of the second connecting rod; the upper end of the second connecting rod is hinged to the second hinged seat, and the hinged seat is connected to a fixed seat fixed to the stirring rod.

[0012] The beneficial effects of the present invention are: the online degassing and purification device for rare earth aluminum alloy melt has excellent comprehensive performance: through the rotatable degassing device and the telescopic rod drive, "zero residue" of aluminum liquid is achieved; the strengthened design of the shaft seat and the casing improves the structural stability, and the refractory layer and the lining enhance the high temperature resistance and corrosion resistance; the multi-layer filtering and stirring mechanism improves the degassing and purification effect, and the temperature and gas are precisely controlled; the furnace cover sealing and positioning optimization ensure the stability of the working environment, and the impurity cleaning mechanism reduces equipment maintenance; the anti-blocking design of the air holes ensures long-term stable operation, and the overall high-efficiency, stable and low-consumption melt purification is achieved, which is adapted to the needs of industrial production. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of this application.

[0014] Figure 2 It is a schematic diagram of the side cross-sectional structure of the first guide rail.

[0015] Figure 3 Schematic diagram of the three-dimensional structure of the axle seat.

[0016] Figure 4It is a schematic diagram of the three-dimensional structure of the casing.

[0017] Figure 5 Schematic diagram of the three-dimensional structure of the refractory brick layer.

[0018] Figure 6 This is a schematic diagram of the main cross-sectional structure of the refractory brick layer.

[0019] Figure 7 This is a schematic diagram of the main cross-sectional structure of the degassing lining.

[0020] Figure 8 Schematic diagram of the three-dimensional structure of the degassing liner.

[0021] Figure 9 It is a schematic diagram of the main cross-sectional structure of the catheter.

[0022] Figure 10 Schematic diagram of the top view of the partition.

[0023] Figure 11 It is a schematic diagram of the side cross-sectional structure of the filter plate.

[0024] Figure 12 It is a schematic diagram of the main cross-sectional structure of the filter plate.

[0025] Figure 13 It is a schematic diagram of the three-dimensional structure of the first steel plate and the second steel plate.

[0026] Figure 14 Schematic diagram of the top view of the degassing box and flow channel.

[0027] Figure 15 It is a schematic diagram of the three-dimensional structure of the gate valve.

[0028] Figure 16 This is a schematic diagram of the main structure of the furnace cover.

[0029] Figure 17 Schematic diagram of the three-dimensional structure of graphite electrode.

[0030] Figure 18 Schematic diagram of the three-dimensional structure of the exhaust pipe.

[0031] Figure 19 It is a schematic diagram of the main structure of the stirring rod.

[0032] Figure 20 It is a schematic diagram of the main cross-sectional structure of the stirring head.

[0033] Figure 21 It is a schematic diagram of the side cross-sectional structure of the stirring head.

[0034] Figure 22 It is a schematic diagram of the main cross-sectional structure of the air chamber.

[0035] Figure 23 A schematic diagram of the side structure of the clamping arm.

[0036] Figure 24 It is a schematic diagram of the side cross-sectional structure of the side panel.

[0037] Figure 25 Schematic diagram of the three-dimensional structure of the clamping arm.

[0038] Figure 26 This is a schematic diagram of the main cross-sectional structure of the annular baffle.

[0039] Figure 27 It is a schematic diagram of the three-dimensional structure of the U-shaped support body.

[0040] Figure 28 Schematic diagram of the side structure of the annular baffle.

[0041] Figure 29 It is a schematic diagram of the main cross-sectional structure of the heat-resistant rod.

[0042] Figure 30 Schematic diagram of the top view of the annular scraper.

[0043] Figure 31 It is a schematic diagram of the top view of the scraping mechanism.

[0044] Figure 32 Schematic diagram of the three-dimensional structure of the guide rod.

[0045] Figure 33 It is a schematic diagram of the side cross-sectional structure of the scraper rod.

[0046] Figure 34 It is a schematic diagram of the main cross-sectional structure of the pull rod.

[0047] Figure 35 Schematic diagram of the three-dimensional structure of the push rod.

[0048] Figure 36 It is a schematic diagram of the three-dimensional structure of the positioning seat.

[0049] Figure 37 It is a schematic diagram of the main cross-sectional structure of the shaft cover.

[0050] Figure 38 It is a schematic diagram of the main cross-sectional structure of the first connecting rod.

[0051] In the figure: 1. base; 2. first support seat; 3. first bearing seat; 4. degassing device; 5. first guide rail; 6. ball groove; 7. steel ball; 8. first slide seat; 9. second guide rail; 10. limit strip; 11. first telescopic rod; 12. first cylinder seat; 13. second telescopic rod; 14. shaft seat; 15. shaft rod; 16. square plate; 17. rib plate; 18. casing; 19. refractory brick layer; 20. first accommodating groove; 21. flange; 22. degassing lining; 23. degassing cavity; 24. liquid guide port; 25. through port; 26. arc surface; 27. second accommodating groove; 29. ​​diversion channel; 30. liquid guide pipe; 31. gate valve; 32. partition; 33. guide strip; 34. filter pipe; 35. guide groove; 36. filter plate ;37. First steel plate;38. Degassing box;39. Second steel plate;40. Flow trough;41. Lifting ear;42. I-beam;43. First channel steel;44. Positioning bolt;45. Annular top cover;46. Second channel steel;47. U-shaped top cover;48. Liquid inlet pipe;49. Second bearing seat;50. Liquid outlet pipe;51. Third bearing seat;52. First bottom plate;53. Foot seat;54. T-bar;55. Gate;56. Slot;57. Positioning pin;58. Vertical plate;59. Socket;60. Second support seat;61. Rotating seat;62. Lifting column;63. Support arm;64. Height adjustment bolt;65. Furnace cover;66. Refractory furnace roof;67. Annular bottom cover;68. Sealing ring groove;69. Asbestos rope;70. Graphite electrode ;71. Exhaust pipe;72. End cover;73. Tee pipe;74. Temperature sensor;75. ​​Stirring rod;76. Stirring head;77. Arc groove;78. Main air hole;79. Lower cover;80. Branch hole;81. Air supply hole;82. Air inlet;83. Air chamber;84. Inlet pipe;85. Fourth bearing seat;86. Sealed bearing;87. Worm gear;88. Worm;89. First motor;90. Support rod;91. Alignment rod;92. L-shaped plate;93. First inclined surface;94. Sliding hole;95. Sliding rod;96. Side plate;97. First spring;98. Clamping arm;99. Hook;100. Second inclined surface;101. Second spring;102. Annular convex plate;103. Card strip;104. Annular rubber seal;105 , internal air cavity; 106, U-shaped support body; 107, deformation groove; 108, gas injection pipe; 109, annular baffle; 110, third telescopic rod; 111, heat shield; 112, heat-resistant rod; 113, horizontal plate; 114, annular scraper; 115, impurity storage groove; 116, filter hole; 117, guide rod; 118, limiter; 119, ear seat; 120, scraping mechanism; 121, third spring; 122, fourth spring; 123, plug socket; 124, first C-shaped seat; 125, second C-shaped seat; 126, T-shaped hole; 127, scraper rod; 128, fifth spring; 129, plug cap; 130, shaft hole; 131, pull rod; 132, ball bearing; 133, shaft cover; 134, fourth telescopic rod;135, positioning seat; 136, pull plate; 137, guide bar; 138, ejector rod; 139, housing; 140, guide tube; 141, second slide seat; 142, first hinge seat; 143, first connecting rod; 144, second connecting rod; 145, second hinge seat; 146, fixed seat. DETAILED DESCRIPTION

[0052] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.

[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0054] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh", "eighth", "ninth" and "tenth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features.

[0055] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect" and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] like Figure 1 and Figure 2As shown, an online degassing and purification device for a rare earth aluminum alloy melt comprises a base 1, a first support seat 2 is mounted on the base 1, the number of the first support seats 2 is two, the two first support seats 2 are symmetrically arranged, a first bearing seat 3 is mounted on the first support seat 2, a degassing device 4 is rotatably connected to the first bearing seat 3; a first guide rail 5 is mounted on the base 1, the top surface of the first guide rail 5 has ball grooves 6 arranged at equal intervals, and in this embodiment, three ball grooves 6 are provided, and linearly arranged steel balls 7 are rollingly connected in the ball grooves 6, and a first slide seat 8 is slidably connected to the steel balls 7, and the bottom surface of the first slide seat 8 has ball grooves 6 adapted to the steel balls 7; the first guide rail 5 The side of the first slide 8 is connected to a second guide rail 9, which is U-shaped, with the notches of the second guide rails 9 on both sides arranged relative to each other; the side of the first slide 8 is connected to a limit bar 10, which is slidably adapted to the second guide rail 9, and the second guide rail 9 can limit the upward movement of the first slide 8; the first slide 8 is driven by a first telescopic rod 11, and the first telescopic rod 11 is connected to the base 1; the first slide 8 is installed with a first cylinder seat 12, and the first cylinder seat 12 is hinged with a second telescopic rod 13, and the piston end of the second telescopic rod 13 is rotatably connected to a shaft seat 14, which is connected to the side wall of the degassing device 4, and the shaft seat 14 is offset from the position of the first bearing seat 3. At the end of casting, the second telescopic rod 13 is automatically started, cooperating with the first telescopic rod 11 to rotate the degassing device 4 45-120° around the center of the flow channel 40, ensuring that the residual aluminum liquid flows completely into the production line flow channel along the flow channel 40, achieving "zero residue". The first paragraph (description of the main device) addresses the following technical issues: It is difficult to completely drain the residual aluminum liquid from the degassing device 4 after casting, resulting in waste and difficulty in subsequent cleaning; issues with the guidance, stability, and anti-slip properties of the first slide 8 when sliding on the guide rail; and issues with the stability of the rotational drive of the degassing device 4. Movement process: At the end of casting, the second telescopic rod 13 is activated, coordinating with the movement of the first telescopic rod 11. The first telescopic rod 11 drives the first slide 8 along the first guide rail 5 (via the rolling of the steel balls 7), and the limit bar 10 on the side of the first slide 8 slides along the second guide rail 9 (to limit upward movement). The second telescopic rod 13 drives the degassing device 4 to rotate 45-120° around the axis of the first bearing seat 3 via the shaft seat 14, allowing the residual aluminum liquid to flow along the flow channel 40 into the production line. Beneficial effects: Achieve "zero residue" of molten aluminum, reduce waste and avoid clogging or damage to equipment after residual molten aluminum solidifies; the steel ball 7 cooperates with the ball groove 6 to make the first slide 8 move more smoothly and with less resistance, and the second guide rail 9 cooperates with the limit bar 10 to ensure sliding stability and anti-slip performance; the first and second telescopic rods 13 cooperate to drive the degassing device 4 to rotate, ensuring that the residual molten aluminum is completely discharged, and the operation is highly automated.

[0057] like Figure 3As shown, as an optimization of the embodiment, the shaft seat 14 includes a shaft 15 with a T-shaped cross-section. A square plate 16 is connected to the small-diameter end of the shaft 15 for connection to the degassing device 4. Ribs 17 are arranged at equal angles at the angle between the square plate 16 and the shaft 15. The second section (optimization of the shaft seat 14) addresses the following technical issues: The connection strength between the shaft seat 14 and the degassing device 4 is insufficient, making it susceptible to deformation or breakage due to excessive force when driving the degassing device 4 to rotate, thus affecting transmission reliability. During the movement process, the power of the second telescopic rod 13 is transmitted to the degassing device 4 through the shaft seat 14. The shaft 15 receives thrust, and the square plate 16 transmits force to the degassing device 4. The ribs 17 receive shear force and bending moment at the angle between the square plate 16 and the shaft 15. Beneficial effects: The T-shaped cross-section shaft 15 enhances the root strength of the connection with the square plate 16; the ribs 17 arranged at equal angles improve the structural rigidity and deformation resistance at the angle between the square plate 16 and the shaft 15, ensuring that the shaft seat 14 is stable and reliable when transmitting power and extending its service life.

[0058] like Figures 4-10As shown, as an optimization of the embodiment, the degassing device 4 includes a casing 18, a refractory brick layer 19 is installed in the casing 18, and a first accommodating groove 20 is provided on the refractory brick layer 19. The shape of the first accommodating groove 20 is a rectangle with two symmetrical flanges 21; a degassing liner 22 is installed in the first accommodating groove 20, the degassing liner 22 is adapted to the first accommodating groove 20, and the degassing liner 22 has two degassing cavities 23, the degassing cavity 23 is a rectangular groove with a liquid guide port 24, the liquid guide port 24 corresponds to the position of the flange 21, the two degassing cavities 23 are connected through a through port 25, one through port 25 is flush with the inner bottom surface of the degassing cavity 23, and the shape of the through port 25 is a quarter circle The degassing cavity 23 is cylindrical, and another through-hole 25 is located at a tangential position of the arc surface 26; the bottom surface of the degassing cavity 23 has an arc surface 26 that guides the liquid guide port 24; the refractory brick layer 19 has a second accommodating groove 27, and the shape of the second accommodating groove 27 is a rectangle with two symmetrical concave cavities; the refractory brick layer 19 has a guide channel 29 connecting the concave cavity and the flange 21, and a liquid guide pipe 30 is installed in the guide channel 29; the liquid guide pipe 30 is connected to the degassing liner 22, and the liquid guide pipe 30 is located at a tangential position of the arc surface 26; the liquid guide pipe 30 located in the second accommodating groove 27 controls the on and off of the aluminum liquid through a gate valve 31; the second accommodating groove 27 is installed with a partition 32 that separates the entry and discharge of aluminum liquid. The third section (structural optimization of degassing device 4) aims to address the following technical issues: poor flow and diversion of molten aluminum within degassing device 4, resulting in inadequate degassing; difficulty controlling the flow of molten aluminum in and out of the device; insufficient high-temperature and corrosion resistance of degassing device 4; and the issue of residual molten aluminum (an auxiliary solution). Movement process: Molten aluminum enters the concave cavity of the second accommodating tank 27 through the liquid inlet pipe 48, flows through the diversion channel 29 and the liquid guide pipe 30 (located tangentially to the arc surface 26), and flows into the degassing cavity 23 of the degassing liner 22. Within the degassing cavity 23, the molten aluminum flows along the arc surface 26 to the liquid guide port 24, and then flows between the two degassing cavities 23 through the through-hole 25. The degassed aluminum is discharged through another liquid guide pipe 30, the concave cavity, and the liquid outlet pipe 50. A gate valve 31 controls the flow of molten aluminum in the liquid guide pipe 30. Beneficial effects: The refractory brick layer 19 improves the high-temperature resistance of the device; the degassing lining 22 is adapted to the first accommodating tank 20, which is convenient for replacement and enhances corrosion resistance; the arc surface 26 and the tangential liquid guide tube 30 are designed to ensure smooth flow of molten aluminum and improve degassing efficiency; the through-port 25 is flush with the inner bottom surface and the quarter-cylindrical design reduces molten aluminum residue; the gate valve 31 facilitates the control of the on-off of the molten aluminum, and the partition 32 prevents the mixing of the inlet and outlet molten aluminum.

[0059] like Figure 11 and Figure 12As shown in the figure, as an optimization of the embodiment, the inner bottom surface of the degassing liner 22 features a guide bar 33 located at the through-hole 25. A filter duct 34 is slidably connected to the through-hole 25. The bottom surface of the filter duct 34 features a guide groove 35 that mates with the guide bar 33, but the groove 35 does not completely penetrate the filter duct 34. The inner wall of the filter duct 34 is connected to filter plates 36 arranged at equal intervals. There are at least three filter plates 36, and the plates 36 are arranged at an angle. The fourth section (Optimization of the filter duct 34) aims to solve the following technical problems: impurities entrained in the molten aluminum during the degassing process are difficult to effectively filter, and the filter components are inconvenient to clean or replace. Improper arrangement of the filter plates 36 also affects filtration effectiveness. During the operation process, the molten aluminum passes through the through-hole 25 and flows through the filter duct 34. The filter plates 36 (at least three, arranged in an angled manner) perform multi-layer filtration on the molten aluminum. The filter duct 34 can be removed by sliding along the guide bar 33 (the guide groove 35 does not completely penetrate to prevent it from falling out). Beneficial effects: The multi-layer inclined filter plates 36 increase the filtration area and filtration path, and improve the impurity filtration effect; the filter pipe 34 can be slidably disassembled, which is convenient for cleaning or replacing the filter plate 36 and easy maintenance; the guide bar 33 cooperates with the guide groove 35 to ensure the stability of the installation of the filter pipe 34.

[0060] like Figure 13 and Figure 14As shown, as an optimization of the embodiment, the casing 18 includes a degassing box 38 welded from a first steel plate 37 and a flow channel 40 welded from a second steel plate 39; the degassing box 38 is in the shape of a convex character, and the side of the degassing box 38 is used to install the square plate 16; the side of the degassing box 38 is connected with symmetrically arranged lifting ears 41; the bottom surface of the degassing box 38 is welded with an I-beam 42, and the three I-beams 42 are arranged at equal intervals, and the I-beams 42 do not exceed the axis of the first bearing seat 3 to prevent structural interference; the I-beam 42 is in contact with the base 1; the side of the degassing box 38 is welded with a first channel steel 43 arranged from top to bottom, and the first channel steel 43 is arranged end to end around the degassing box 38, and the first channel steel 43 on the uppermost layer is connected to an annular top cover 45 by a positioning bolt 44, and the annular top cover 45 is used to press the refractory brick layer 19; the side of the degassing box 38 is welded with a vertically arranged second channel steel 46, and the second channel steel 46 surrounds The first channel steels 43 of adjacent layers are connected together around the degassing box 38; the shape of the flow trough 40 is rectangular, and the flow trough 40 is connected to the protruding section of the degassing box 38. The top surface of the flow trough 40 is connected to a U-shaped top cover 47 by a positioning bolt 44. The U-shaped top cover 47 is used to compress the refractory brick layer 19, and the height of the U-shaped top cover 47 is less than the annular top cover 45. One side of the flow trough 40 is connected to a liquid inlet pipe 48, which is connected to the second accommodating tank 27, and the outer wall of the liquid inlet pipe 48 is rotatably connected to the first bearing seat 3; the outer wall of the liquid inlet pipe 48 is rotatably connected to the second bearing seat 49, and the second bearing seat 49 is fixed to the degassing box 38; the other side of the flow trough 40 is connected to a liquid outlet pipe 50, which is connected to the second accommodating tank 27, and the outer wall of the liquid outlet pipe 50 is rotatably connected to the first bearing seat 3; the outer wall of the liquid outlet pipe 50 is rotatably connected to the third bearing seat 51, and the third bearing seat 51 is fixed to the degassing box 38. The fifth section (Optimizing the Casing 18 Structure) addresses the following technical issues: The degassing device 4's overall structural strength is insufficient, making it unable to withstand the weight of the molten aluminum inside and the stresses of rotation; the refractory brick layer 19 is not securely fixed; and the connection between the degassing box 38 and the launder 40 is unreliable. During rotation: When the degassing device 4 rotates, the entire casing 18 (degassing box 38 and launder 40) is subjected to stress. The I-beam 42 strengthens the bottom support, while the first and second channel steels 46 enhance the lateral rigidity of the degassing box 38. The annular top cover 45 and the U-shaped top cover 47 are secured to the refractory brick layer 19 via positioning bolts 44 to prevent loosening. The liquid inlet pipe 48 and liquid outlet pipe 50 are secured to the degassing box 38 via the second and third bearing blocks 51, and rotate in conjunction with the first bearing block 3 to ensure smooth rotation. Beneficial effects: The structural design of I-beam 42, channel steel, etc. improves the overall strength and rigidity of the casing 18 to adapt to the rotation and load-bearing requirements; the refractory brick layer 19 is firmly fixed to avoid loosening and affecting use; the multi-bearing seat cooperates to ensure the stability and smoothness of the rotation of the degassing device 4; the lifting lug 41 facilitates the lifting and transportation of the device.

[0061] like Figure 15As shown, as an optimization of the embodiment, the gate valve 31 includes a first base plate 52 mounted on the top surface of the refractory brick layer 19. Two footplates 53 are connected to the first base plate 52. A T-shaped rod 54 is hingedly connected to the footplate 53. A gate plate 55 is connected to the middle section of the T-shaped rod 54. A slot 56 is defined on the top surface of the liquid guide tube 30 for inserting the gate plate 55 to control the flow of molten aluminum. Positioning pins 57 are slidably connected to the sidewalls of the T-shaped rod 54. Two vertical plates 58 are connected to the U-shaped top cover 47. These vertical plates 58 are provided with top-to-bottom sockets 59 for inserting the positioning pins 57, thereby controlling the position of the gate valve 31. The technical issues to be addressed in the sixth section (Optimization of Gate Valve 31) are: The convenience and reliability of controlling the flow of molten aluminum are insufficient. The gate valve 31 is not firmly positioned after operation and can easily shift due to external forces, leading to leakage of molten aluminum or unstable flow. Movement process: Rotating the T-bar 54 drives the gate 55 to insert or remove it from the slot 56 of the liquid guide tube 30, thus switching the molten aluminum on and off. After adjusting the position of the gate 55, insert the positioning pin 57 into the corresponding socket 59 of the vertical plate 58 to fix the position of the T-bar 54. Beneficial effect: The T-bar 54 is easy to operate and facilitates quick control of the gate 55. The positioning pin 57 cooperates with the sockets 59 in different positions to accurately control the opening and closing degree of the gate 55 (regulating the flow rate). The positioning pin 57 also firmly prevents the gate 55 from moving accidentally, improving the reliability of the molten aluminum control.

[0062] like Figure 16 and Figure 17As shown, as an optimization of the embodiment, it also includes a second support seat 60 arranged on the base 1, a swivel seat 61 is installed on the second support seat 60, a lifting column 62 is installed on the swivel seat 61, and a support arm 63 is installed on the movable seat of the lifting column 62. The support arm 63 is U-shaped, and the fork of the support arm 63 is connected to the furnace cover 65 through the height adjustment bolt 64. The shape of the furnace cover 65 is convex, and the furnace cover 65 is adapted to the top surface of the degassing box 38, and the projection area of ​​the furnace cover 65 is smaller than the projection area of ​​the degassing box 38. This can prevent the positioning bolts 44 on the annular top cover 45 from affecting the sealing of the furnace cover 65; a refractory furnace top 66 is installed in the furnace cover 65, and the bottom surface of the furnace cover 65 is connected to an annular bottom cover 67 that limits the refractory furnace top 66, and a sealing ring groove 68 is connected to the annular bottom cover 67, and an asbestos rope 69 is installed in the sealing ring groove 68. After the asbestos rope 69 is pressed tightly against the annular top cover 45, the degassing operation can be carried out. Section 7 (Optimization of the Second Support Base 60 and the Furnace Cover 65) addresses the following technical issues: Rapid heat dissipation from the molten aluminum during degassing, impacting degassing effectiveness; poor sealing between the furnace cover 65 and the degassing box 38, leading to gas leakage and ingress of foreign matter; and inaccurate positioning of the furnace cover 65, impacting sealing and operation. Movement Process: The furnace cover 65's height is adjusted by the lifting column 62, and its horizontal position is adjusted by the swivel base 61, ensuring it snaps into place on the top surface of the degassing box 38. Alignment rods 91 mate with the first channel steel 43 to ensure precise positioning of the furnace cover 65. Asbestos ropes 69 press against the annular top cover 45 to create a seal. During degassing operations, the furnace cover 65 seals the degassing box 38. Beneficial Effects: The refractory furnace roof 66 reduces heat dissipation from the molten aluminum, maintaining the degassing temperature. The annular bottom cover 67 and asbestos ropes 69 enhance the seal of the furnace cover 65, preventing heat loss and ingress of foreign matter. The alignment rods 91 ensure precise snapping of the furnace cover 65, preventing the positioning bolts 44 from interfering with the seal and improving degassing efficiency.

[0063] like Figure 17 and Figure 18As shown, as an optimization of the embodiment, the top surface of the furnace cover 65 is mounted with graphite electrodes 70. Three graphite electrodes 70 extend into the degassing chamber 23 to heat the molten aluminum. Two exhaust pipes 71 are mounted on the top surface of the furnace cover 65, one for each degassing chamber 23. End caps 72 are mounted at the upper ends of the exhaust pipes 71. The two exhaust pipes 71 exhaust gases from the degassing box 38 through a tee 73. A temperature sensor 74 is mounted on the furnace cover 65 and extends into the degassing chamber 23. The eighth paragraph (Optimization of Graphite Electrodes 70, Exhaust Pipes 71, and Temperature Sensor 74) addresses the following technical issues: insufficient or unstable molten aluminum temperature during the degassing process, affecting the degassing reaction; gases generated during degassing cannot be effectively discharged, accumulating in the degassing chamber 23 and affecting the degassing effect; and the inability to monitor the molten aluminum temperature in the degassing chamber 23 in real time. During operation: Graphite electrode 70 is energized to heat the molten aluminum in degassing chamber 23, maintaining or raising its temperature. A suction pipe 71 discharges gases (such as hydrogen and impurities) generated during the degassing process through a tee pipe 73. A temperature sensor 74 monitors the temperature of the molten aluminum in degassing chamber 23 in real time. Beneficial Effects: Heating by graphite electrode 70 ensures the molten aluminum is at an optimal degassing temperature, improving degassing efficiency. The suction pipe 71 effectively discharges gases, preventing residual gas from affecting the quality of the molten aluminum. The temperature sensor 74 monitors the temperature in real time, facilitating timely adjustment of heating parameters and ensuring a stable degassing process.

[0064] like Figures 19-22As shown, as an optimization of the embodiment, the furnace cover 65 is rotatably connected to a stirring rod 75, which extends into the degassing chamber 23. The bottom surface of the stirring rod 75 is connected to a stirring head 76, which is in the shape of a disc. The side surface of the stirring head 76 has arc grooves 77 arranged at equal angles. The lower side of the arc groove 77 passes through the stirring head 76, and the upper side of the arc groove 77 does not pass through the stirring head 76; the bottom surface of the stirring head 76 has a main air hole 78, and the lower end of the main air hole 78 is connected to the lower cover 79; the side surface of the stirring head 76 is provided with a branch hole 80 connected to the main air hole 78, and the branch hole 80 is located between adjacent arc grooves 77, and the branch hole 80 has three types: horizontal arrangement, inclined upward arrangement, and inclined downward arrangement. The top surface of the stirring rod 75 has two symmetrically arranged air holes 81, which are offset from the axial position. The upper ends of the air holes 81 do not penetrate the top surface of the stirring rod 75, and the side of the stirring rod 75 is provided with an air inlet 82 corresponding to the air hole 81; an air chamber 83 is installed on the top surface of the furnace cover 65, and an air inlet pipe 84 is connected to the air chamber 83. A fourth bearing seat 85 symmetrically arranged in the upper and lower parts is installed in the air chamber 83, and the fourth bearing seat 85 is rotatably connected to the stirring rod 75; a sealed bearing 86 is installed on the top surface of the air chamber 83, and the sealed bearing 86 is rotatably connected to the stirring rod 75; a worm gear 87 is installed on the stirring rod 75 outside the air chamber 83, and a worm 88 is engaged with the worm gear 87, and the worm 88 is driven by a first motor 89. The ninth section (Optimization of the Stirring Rod 75 and Drive Mechanism) addresses the following technical issues: uneven mixing of the molten aluminum within the degassing chamber 23, resulting in inadequate degassing; insufficient sealing between the stirring mechanism and the furnace cover 65, leading to air leakage; and unstable stirring drive transmission, affecting the stirring effect. Motion Process: The first motor 89 drives the worm 88, which in turn rotates the worm gear 87, causing the stirring rod 75 to rotate within the fourth bearing seat 85 and the sealed bearing 86. The stirring head 76 rotates with the stirring rod 75, stirring the molten aluminum within the degassing chamber 23. Preheated degassing medium is introduced into the air chamber 83 through the air inlet pipe 84. The degassing medium (such as inert gas) is introduced into the air supply hole 81 through the air inlet 82 and enters the molten aluminum through the main air hole 78 and the branch air hole 80. Beneficial effects: The rotation of the stirring head 76 mixes the aluminum liquid evenly, improves the contact efficiency between the degassing medium and the aluminum liquid, and enhances the degassing effect; the arc groove 77 design enhances the stirring force; the sealed bearing 86 and the air chamber 83 improve the sealing performance and prevent gas leakage; the worm gear 87 and the worm 88 drive smoothly to ensure a stable stirring speed.

[0065] like Figure 17As shown, as an optimization of the embodiment, the furnace cover 65 is equipped with two symmetrically arranged support rods 90 on its sides. Alignment rods 91 are connected to the support rods 90 and mate with the first channel steel 43, ensuring that the furnace cover 65 is securely fastened to the degassing box 38. Paragraph 10 (Optimization of support rods 90 and alignment rods 91) addresses the following technical issue: Insufficient positioning accuracy when the furnace cover 65 is fastened to the degassing box 38 can lead to poor sealing or structural interference, compromising degassing operations and equipment safety. Movement: When the furnace cover 65 is lowered for fastening, the alignment rods 91 mate with the first channel steel 43, guiding the furnace cover 65 precisely into position. Beneficial Effect: The alignment rods 91 mate with the first channel steel 43, further improving the positioning accuracy of the furnace cover 65 during fastening, ensuring accurate alignment between the furnace cover 65 and the degassing box 38. This prevents misalignment that could result in poor sealing or interference with the locating bolts 44 on the annular top cover 45, thereby improving operational reliability.

[0066] like Figure 23-Figure 25 As shown, as an optimization of the embodiment, the side wall of the furnace cover 65 is connected with at least two L-shaped plates 92, the vertical section of the L-shaped plate 92 has a first inclined surface 93, the horizontal section of the L-shaped plate 92 has a sliding hole 94, a sliding rod 95 is slidably connected in the sliding hole 94, the lower end of the sliding rod 95 is connected to a side plate 96, and a first spring 97 is installed between the side plate 96 and the L-shaped plate 92; a clamping arm 98 is rotatably connected to the side plate 96, the lower end of the clamping arm 98 has a hook head 99, the hook head 99 is clamped with the first channel steel 43, the upper end of the hook head 99 has a second inclined surface 100, and the second inclined surface 100 is adapted to the first inclined surface 93; a second spring 101 is installed on the side of the hook head 99, the free end of the second spring 101 is connected to the bottom surface of the side plate 96, and the bottom surface of the side plate 96 is used to press the edge of the annular top cover 45. Technical issues to be addressed in Section 11 (Optimization of the L-shaped plate 92 and the clamping mechanism): The furnace cover 65 is not securely fastened after being fastened and can easily loosen due to vibration or external forces, resulting in seal failure. The clamping mechanism is cumbersome to operate, affecting operational efficiency. Movement process: When the furnace cover 65 descends to close, the side plates 96 first press against the edge of the annular top cover 45. The first spring 97 contracts, and the side plates 96 continue to descend, forcing the clamping arms 98 to rotate outward and compressing the second spring 101. Simultaneously, the second inclined surface 100 of the clamping arms 98 contacts the first inclined surface 93 of the L-shaped plate 92. Once the furnace cover 65 is in place, the hooks 99 of the clamping arms 98 engage the first channel steel 43, securing the furnace cover 65. When the furnace cover 65 is opened, the second spring 101 resets, causing the clamping arms 98 to automatically release from the first channel steel 43. Beneficial effects: The hook head 99 engages with the first channel steel 43 and the side plate 96 presses, so that the furnace cover 65 is firmly fixed on the degassing box 38 to prevent loosening; the inclined surface cooperates to realize the automation of the clamping action, which is convenient to operate and improves the working efficiency; the first and second springs 101 play a buffering and pre-tightening role to ensure the reliability of clamping.

[0067] like Figure 26-Figure 28As shown, as an optimization of the embodiment, the sidewall of the furnace cover 65 is connected to two symmetrical annular protrusions 102. The opposing surfaces of the annular protrusions 102 have retaining strips 103. An annular rubber seal 104 is installed in the gap between the annular protrusions 102. The internal air cavity 105 of the annular rubber seal 104 is supported by several U-shaped supports 106, each of which has a deformation groove 107. An air injection pipe 108 is installed on the top surface of the annular rubber seal 104. An annular baffle 109 is connected to the edge of the annular top cover 45. A gap is formed between the annular baffle 109 and the side plate 96 to prevent structural interference. A gap is formed between the annular baffle 109 and the annular protrusions 102, allowing the expanded annular rubber seal 104 to contact the annular baffle 109, forming a flexible seal. The technical problem to be solved in Section 12 (Optimization of the annular protrusions 102 and seal): The rigid seal between the furnace cover 65 and the annular top cover 45 is easily compromised due to machining errors or thermal deformation, thus affecting the degassing effect. Movement Process: Air is inflated into the internal air cavity 105 of the annular rubber seal 104 through the air injection tube 108. Under the action of the air pressure, the U-shaped support 106 expands the annular rubber seal 104 (the deformation groove 107 allows the U-shaped support 106 to deform), causing it to expand and contact the annular baffle 109, forming a flexible seal. Beneficial Effect: The flexible seal formed by the expansion of the annular rubber seal 104 can compensate for gaps caused by machining errors and thermal deformation, improving sealing performance. The U-shaped support 106 and deformation groove 107 ensure uniform expansion of the annular rubber seal 104, resulting in a stable sealing effect. The annular baffle 109 is designed to avoid interference with the side plate 96, ensuring structural rationality.

[0068] like Figure 29 and Figure 30As shown, as an optimization of the embodiment, a third telescopic rod 110 is mounted on the end cap 72, and a multi-layer heat shield 111 is installed within the exhaust pipe 71. A heat-resistant rod 112 is connected to the piston end of the third telescopic rod 110. The lower end of the heat-resistant rod 112 is connected to a horizontal plate 113, to which an annular scraper 114 is attached. The annular scraper 114 fits within the degassing liner 22. The inner wall of the annular scraper 114 is connected to an impurity storage tank 115. The bottom surface of the impurity storage tank 115 has a filter hole 116. The filter hole 116 can discharge clean molten aluminum. Impurities floating on the surface of the molten aluminum are forced into the impurity storage tank 115 by the vertical movement of the third telescopic rod 110. The technical problems to be solved in Section 13 (Optimization of the end cap 72 and scraper): Impurities floating on the surface of the molten aluminum are difficult to remove, affecting the purity of the molten aluminum; and significant heat loss within the exhaust pipe 71 affects degassing efficiency. Movement Process: The third telescopic rod 110 drives the heat-resistant rod 112 up and down, driving the horizontal plate 113 and annular scraper 114 to move up and down within the degassing liner 22. The annular scraper 114 scrapes impurities from the surface of the molten aluminum into the impurity storage tank 115, and the clean aluminum liquid is discharged from the impurity storage tank 115 through the filter holes 116. The multi-layer heat shield 111 in the exhaust pipe 71 ensures the service life of the third telescopic rod 110. Beneficial Effects: The annular scraper 114 effectively removes impurities from the surface of the molten aluminum, and the impurity storage tank 115 collects impurities without retaining clean aluminum liquid, thereby improving the purity of the molten aluminum. The third telescopic rod 110 can control the scraper position to adapt to different liquid level heights. The multi-layer heat shield 111 ensures the service life of the third telescopic rod 110.

[0069] like Figure 31-Figure 33As shown, as an optimization of the embodiment, the impurity storage groove 115 is slidably connected to a guide rod 117, and the upper and lower ends of the guide rod 117 have limit portions 118. The guide rod 117 is slidably connected to an ear seat 119, and a scraping mechanism 120 is installed between the ear seats 119. The guide rod 117 is sleeved with a third spring 121, and the third spring 121 is located below the impurity storage groove 115. The guide rod 117 is sleeved with a fourth spring 122, and the fourth spring 122 is located above the ear seat 119; the scraping mechanism 120 includes a first C-shaped seat 124 and a second C-shaped seat 125, and the first C-shaped seat 124 is provided with a second C-shaped seat 125. 24 and the second C-shaped seat 125 are secured via a plug socket 123; the first and second C-shaped seats 124, 125 are adapted to fit the graphite electrode 70. T-shaped holes 126 are arranged at equal angles on the first and second C-shaped seats 124, 125. Scrapers 127 are slidably connected within the T-shaped holes 126. Scrapers 127 are used to clean impurities from the surface of the graphite electrode 70, which are then deposited into the impurity storage tank 115. A fifth spring 128 is installed within the T-shaped holes 126 to squeeze the scrapers 127. A plug 129 is threadedly connected to the end of the T-shaped hole 126. Paragraph 14 (Optimization of the Impurity Storage Tank 115 and Scraping Mechanism 120) addresses the following technical issue: Impurities easily adhere to the surface of the graphite electrode 70, affecting heating efficiency and service life. Movement Process: As the impurity storage trough 115 moves with the annular scraper 114, the scraping mechanism 120 (first C-shaped seat 124 and second C-shaped seat 125) is sheathed over the graphite electrode 70. Driven by the fifth spring 128, the scraper rod 127 adheres closely to the surface of the graphite electrode 70, scraping impurities from the electrode surface as it moves with the impurity storage trough 115. Impurities fall into the molten aluminum and then flow into the impurity storage trough 115. The first and second C-shaped seats 125 can be detached using the plug socket 123, facilitating installation or replacement. Beneficial Effects: The scraper rod 127 adheres closely to the electrode surface, effectively removing impurities and ensuring efficient heating of the graphite electrode 70. The third and fourth springs 122 enable the scraping mechanism 120 to adapt to slight deformations of the electrode, resulting in more stable lifting and lowering motion and improved cleaning effectiveness. The detachable C-shaped seats facilitate installation and maintenance of the scraping mechanism 120.

[0070] like Figures 34-37As shown, as an optimization of the embodiment, an axial hole 130 is opened at the center of the stirring rod 75, and a pull rod 131 is installed in the axial hole 130. The upper end of the pull rod 131 is connected to the shaft cover 133 through a ball bearing 132. The shaft cover 133 is driven by a fourth telescopic rod 134. The fourth telescopic rod 134 is fixed on a positioning seat 135, and the positioning seat 135 is connected to the air chamber 83; the lower end of the pull rod 131 extends to the outside of the lower cover 79, and a pull plate 136 is slidably connected to the pull rod 131 outside the lower cover 79, and the pull plate 136 slides up The movable connection is provided with two guide bars 137, arranged symmetrically. The upper ends of the guide bars 137 are connected to the stirring head 76. A push rod 138 is mounted on the top surface of the pull plate 136. Push rod 138 is slidably connected to the stirring head 76 and positioned in the gap between adjacent air holes 80. A cover 139 is connected to the upper end of the push rod 138. Cover 139 slidably fits over the stirring rod 75 and fits over the stirring head 76. When lowered, cover 139 seals the air holes 80, preventing molten aluminum from influxing and causing blockage. Paragraph 15 (Optimization of pull rods 131 and cover 139) addresses the following technical issue: After degassing, air holes 80 are easily clogged by influx of molten aluminum, affecting the proper flow of gas during the next degassing operation. Clearing clogged air holes 80 is also difficult. Movement Process: After degassing is completed, the fourth telescopic rod 134 drives the pull rod 131 downward through the shaft cover 133. The pull rod 131 then moves the pull plate 136 downward, and the push rod 138 moves downward accordingly, causing the cover 139 to descend along the stirring rod 75 and fit into the stirring head 76, sealing the air holes 80. When ventilation is required, the fourth telescopic rod 134 drives the pull rod 131 upward, and the cover 139 returns to its original position, opening the air holes 80. Beneficial Effect: The cover 139 seals the air holes 80, effectively preventing clogging by molten aluminum and ensuring unobstructed air flow during the next degassing operation. The pull rod 131 and push rod 138 have a simple structure and are easy to operate, reducing equipment maintenance costs and downtime caused by blockages.

[0071] like Figure 38As shown, as an optimization of the embodiment, the cover 139 is connected to a conduit 140, which is slidably adapted to the stirring rod 75. A second slide 141 is connected to the conduit 140, and the top surface of the second slide 141 is connected to first hinged seats 142 arranged at equal angles. In this embodiment, six first hinged seats 142 are provided. A first connecting rod 143 is hingedly connected to the first hinged seat 142, and a second connecting rod 144 is hingedly connected to the free end of the first connecting rod 143. The hinge point between the first connecting rod 143 and the second connecting rod 144 is located in the middle section of the second connecting rod 144. The upper end of the second connecting rod 144 is hingedly connected to a second hinged seat 145, and the second hinged seat 145 is connected to a fixed seat 146, which is fixedly connected to the stirring rod 75. The technical problem to be solved in Section 16 (Optimization of the connecting rod mechanism on the cover 139): poor stirring range. Movement: As cover 139 is raised or lowered, second slide 141 moves synchronously with conduit 140, driving first hinge 142. The hinge point between first link 143 and second link 144 rotates, and the cooperation between second link 144 and second hinge 145 constrains the movement of cover 139, ensuring smooth axial movement. Beneficial Effect: Multiple symmetrically arranged linkages ensure smooth raising and lowering of cover 139, without deflection or tilt, and enhance stirring efficiency.

[0072] Although the present invention has been described in detail with reference to the foregoing examples, it is still possible for those skilled in the art to make modifications to the technical solutions described in the foregoing embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An online degassing and purification device for rare earth aluminum alloy melt, characterized in that: The invention comprises a base (1), wherein two symmetrically arranged first support seats (2) are mounted on the base (1), a first bearing seat (3) is mounted on the first support seat (2), and a degassing device (4) is rotatably connected to the first bearing seat (3); a first guide rail (5) is mounted on the base (1), and the top surface of the first guide rail (5) has ball grooves (6) arranged at equal intervals, and linearly arranged steel balls (7) are rollingly connected in the ball grooves (6), and a first slide seat (8) is slidably connected to the steel balls (7), and the bottom surface of the first slide seat (8) has a ball groove (6) adapted to the steel balls (7); a U-shaped second guide rail ( 9); The first slide (8) is connected to a limit strip (10) on the side, and the limit strip (10) is slidably adapted to the second guide rail (9); the first slide (8) is driven by a first telescopic rod (11); a first cylinder seat (12) is mounted on the first slide (8), a second telescopic rod (13) is hinged on the first cylinder seat (12), and the piston end of the second telescopic rod (13) is rotatably connected to a shaft seat (14), and the shaft seat (14) is connected to the side wall of the degassing device (4) and deviates from the position of the first bearing seat (3); the degassing device (4) includes a housing (18), a refractory brick layer (19) is installed in the housing (18), and the refractory brick layer (1 9) is provided with a first accommodating groove (20) and a second accommodating groove (27); the first accommodating groove (20) is a rectangle with two symmetrical flanges (21), and is equipped with a degassing lining (22) adapted thereto, the degassing lining (22) having two rectangular groove degassing cavities (23) with liquid guide ports (24), the two degassing cavities (23) being connected through a through-hole (25) flush with the inner bottom surface, and the bottom surface of the degassing cavity (23) having an arc surface (26) for guiding the liquid guide port (24); the second accommodating groove (27) is a rectangle with two symmetrical concave cavities, and the refractory brick layer (19) is provided with a guide channel (29) connecting the concave cavities and the flange (21). ), a liquid guide tube (30) is installed in the channel, the liquid guide tube (30) is connected to the degassing liner (22) and is located tangentially to the arc surface (26); the liquid guide tube (30) in the second accommodating groove (27) controls the on and off of the aluminum liquid through the gate valve (31), and the second accommodating groove (27) is equipped with a partition (32) for separating the aluminum liquid from entering and exiting; the bottom surface of the degassing liner (22) is provided with a guide strip (33), and a filter pipe (34) is slidably connected to the through-hole (25), and the bottom surface of the filter pipe (34) has a guide groove (35) adapted to the guide strip (33); the inner wall of the filter pipe (34) is connected to at least three filter plates (36) arranged obliquely.

2. The online degassing and purification device for rare earth aluminum alloy melt according to claim 1, characterized in that: The casing (18) includes a convex degassing box (38) welded with a first steel plate (37) and a rectangular flow channel (40) welded with a second steel plate (39); three equally spaced I-beams (42) are welded on the bottom surface; the first channel steels (43) connected end to end are welded on the side of the degassing box (38), and the top first channel steel (43) is connected to the annular top cover (45) by positioning bolts (44); a vertical second channel steel (46) is welded on the side of the degassing box (38), and the second channel steel (46) is connected to the first channel steel (43) of the adjacent layer; the flow channel (40) is connected to the protruding section of the degassing box (38), and the top surface is connected to the U by positioning bolts (44). A top cover (47) is provided; one side of the flow trough (40) is connected to a liquid inlet pipe (48), the liquid inlet pipe (48) is connected to the second accommodating tank (27), and the liquid inlet pipe (48) is rotatably connected to a second bearing seat (49) provided on the degassing box (38); the other side of the flow trough (40) is connected to a liquid outlet pipe (50), the liquid outlet pipe (50) is connected to the second accommodating tank (27), and the liquid outlet pipe (50) is rotatably connected to a third bearing seat (51) provided on the degassing box (38).

3. The online degassing and purification device for rare earth aluminum alloy melt according to claim 1, characterized in that: The gate valve (31) includes a first bottom plate (52) provided on the top surface of the refractory brick layer (19), the first bottom plate (52) is connected to two foot seats (53), the foot seats (53) are hinged to a T-shaped rod (54), the middle section of the T-shaped rod (54) is connected to a gate plate (55), and a slot (56) for inserting the gate plate (55) is provided on the top surface of the liquid guide tube (30); a positioning pin (57) is slidably connected to the side wall of the T-shaped rod (54), and two vertical plates (58) are connected to the U-shaped top cover (47), and the vertical plates (58) are provided with a socket (59) for inserting the positioning pin (57).

4. The online degassing and purification device for rare earth aluminum alloy melt according to claim 2, characterized in that: The invention also includes a second support seat (60) provided on the base (1), the support seat is provided with a rotating seat (61), the rotating seat (61) is provided with a lifting column (62), the column mover seat is provided with a U-shaped support arm (63), the bifurcation of the support arm (63) is connected to a convex furnace cover (65) through a height adjustment bolt (64), the furnace cover (65) is adapted to the top surface of the degassing box (38) and its projection is smaller than that of the degassing box (38); a refractory furnace top (66) is provided in the furnace cover (65), the bottom surface of which is connected to an annular bottom cover (67) for limiting the refractory furnace top (66), the annular bottom cover (67) is connected to a sealing ring groove (68), and an asbestos rope (69) is provided in the groove.

5. The online degassing and purification device for rare earth aluminum alloy melt according to claim 4, characterized in that: The top surface of the furnace cover (65) is equipped with three graphite electrodes (70) extending into the degassing cavity (23) and two exhaust pipes (71) corresponding to the degassing cavity (23). The upper end of the exhaust pipe (71) is equipped with an end cap (72) and exhaust is discharged through a three-way pipe (73); the furnace cover (65) is equipped with a temperature sensor (74) extending into the degassing cavity (23).

6. The online degassing and purification device for rare earth aluminum alloy melt according to claim 4, characterized in that: The furnace cover (65) is rotatably connected to a stirring rod (75) extending into the degassing chamber (23), and the bottom of the rod is connected to a disc-shaped stirring head (76). The side of the stirring head (76) has an equiangular arc groove (77), and the lower side of the groove passes through the stirring head (76); the bottom surface of the stirring head (76) has a main air hole (78), the lower end of the main air hole (78) is connected to the lower cover (79), and the side is opened with three types of branch holes (80) connected to the main air hole (78) horizontally, inclined upward and inclined downward; the top surface of the stirring rod (75) has two A symmetrical air supply hole (81) is formed on the side of the stirring rod (75), and an air inlet (82) corresponding to the air supply hole (81) is opened on the side of the stirring rod (75); an air chamber (83) is installed on the top surface of the furnace cover (65), the air chamber is connected to the air inlet pipe (84), a fourth bearing seat (85) rotatably connected to the stirring rod (75) is installed inside, and a sealing bearing (86) rotatably connected to the stirring rod (75) is installed on the top surface; the stirring rod (75) outside the air chamber (83) is equipped with a worm gear (87), the worm gear (87) engages with a worm (88), and the worm (88) is driven by a first motor (89).

7. The online degassing and purification device for rare earth aluminum alloy melt according to claim 4, characterized in that: The side wall of the furnace cover (65) is connected to at least two L-shaped plates (92), the vertical section of the plate has a first inclined surface (93), the horizontal section has a sliding hole (94), the sliding rod (95) is slidably connected in the hole, the lower end of the rod is connected to the side plate (96), and a first spring (97) is installed between the side plate (96) and the L-shaped plate (92); the side plate (96) is rotatably connected to the clamping arm (98), the lower end of the arm has a hook head (99), and the upper end has a second inclined surface (100) adapted to the first inclined surface (93); a second spring (101) is installed on the side of the hook head (99), and the free end of the spring is connected to the bottom surface of the side plate (96).

8. The online degassing and purification device for rare earth aluminum alloy melt according to claim 7, characterized in that: The side wall of the furnace cover (65) is connected to two annular convex plates (102) symmetrically arranged in the upper and lower parts, and the opposite surfaces of the convex plates are provided with clamping strips (103). An annular rubber sealing body (104) is installed in the gap. The air cavity (105) inside the sealing body is opened by a plurality of U-shaped supporting bodies (106) with deformation grooves (107), and an air injection pipe (108) is installed on the top surface. The edge of the annular top cover (45) is connected to an annular baffle (109), and there are gaps between the baffle and the side plates (96) and the annular convex plate (102).

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