Aluminum liquid degasser and degassing method

Abstract

The present invention belongs to the technical field of metal smelting, and specifically is an aluminum liquid degassing machine and a degassing method, comprising a machine base; a fixed slide rail is fixedly connected to the top of the machine base; an electric slide rail is slidably connected to the outside of the fixed slide rail; a plurality of graphite turntables are arranged to rotate rapidly with a connecting frame, so that bubbles formed by inert gas can be dispersed into a large number of fine bubbles, thereby improving the degassing effect on the aluminum liquid; inert gas is injected from a No. 1 gas injection hole to a No. 1 exhaust hole and a No. 2 exhaust hole for spraying, so as to achieve a multi-directional spraying and mixing of the inert gas; a dispersion plate is coordinated to rotate with the connecting frame to disperse bubbles generated by the inert gas, thereby improving the degassing effect of the aluminum liquid; a limit plate is relied on to squeeze a No. 1 elastic member to slide inside the connecting frame, thereby controlling the clamping limit of the No. 1 fixed frame; the No. 2 fixed frame is coordinated with a No. 1 filter plate to stir and filter the surface of the aluminum liquid, thereby achieving a function of collecting impurities on the surface of the aluminum liquid.

Description

Technical Field

[0001] The invention belongs to the technical field of metal smelting, in particular to an aluminum liquid degassing machine and a degassing method. Background Art

[0002] The aluminum liquid degasser is a pollution-free aluminum liquid purification and treatment machine, which is mainly used for the degassing process of the product. The principle of aluminum liquid degassing is to spray inert gas into the molten aluminum liquid to achieve the purpose of removing hydrogen.

[0003] A patent application with publication number CN109371253A discloses a molten metal degassing device for aluminum alloy production, including a base, a column, a screw, a sliding rod, an inert gas tank, a first motor, an adjustment block, a cross bar, a second motor, a first rotor, a second rotor and a roller. A vertical column is provided on the right side above the base, and a horizontally placed lower limit plate is provided on the top of the column. This application mainly improves the degassing effect by reasonably adjusting the distance between the graphite rotor and the bottom of the aluminum liquid.

[0004] The above-mentioned aluminum liquid degasser mainly improves the degassing effect of the aluminum liquid by adjusting the position of each degassing component. When degassing the aluminum liquid, it is necessary to use as little inert gas as possible to remove as much hydrogen in the aluminum melt as possible. However, due to the current aluminum liquid degasser, the number of bubbles formed after the inert gas is injected is small and the bubble volume is large, which easily affects the degassing effect of the aluminum liquid.

[0005] To this end, the present invention provides an aluminum liquid degasser and a degassing method. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: the aluminum liquid degassing machine described in the present invention comprises a machine base; a fixed slide rail is fixedly connected to the top of the machine base; an electric slider is slidably connected to the outside of the fixed slide rail; a support frame is fixedly connected to the outside of the electric slider; a servo motor is fixedly connected to the outside of the support frame; a connecting frame is fixedly connected to the output end of the servo motor; a fixed seat is fixedly connected to the bottom end of the connecting frame; a graphite turntable is fixedly connected to the bottom end of the fixed seat, and a plurality of fixed seats and graphite turntables are provided, and the plurality of fixed seats and graphite turntables are connected to each other; an exhaust assembly is provided inside the connecting frame, and the exhaust assembly is used to spray inert gas; an insulation barrel is fixedly connected to the top of the machine base away from the fixed slide rail; a discharge pipe is fixedly connected to the inside of the machine base and below the insulation barrel, and the discharge pipe is connected to the bottom end of the insulation barrel.

[0008] Preferably, the exhaust assembly includes an injection hole No. 1, an exhaust hole No. 1, an exhaust hole No. 2, a fixing frame No. 1 and a dispersion plate; the injection hole No. 1 is arranged inside the connecting frame; the exhaust hole No. 1 is arranged inside the fixing seat; the exhaust hole No. 2 is arranged inside the graphite turntable, and the injection hole No. 1, the exhaust hole No. 1 and the exhaust hole No. 2 are interconnected, and the hole diameter of the exhaust hole No. 1 is smaller than the hole diameter of the exhaust hole No. 2; a plurality of the fixing frames No. 1 are slidably connected to the outside of the connecting frame; the dispersion plate is fixed to the inner wall of the fixing frame No. 1; a limiting assembly is arranged on the outside of the connecting frame, and the limiting assembly is used to limit the fixing frame No. 1.

[0009] Preferably, the limit assembly includes a limit plate and a pressing block; a plurality of the limit plates are slidably connected to the inside of the connecting frame, and a plurality of round rods are arranged on the outside of the limit plate, a mounting hole matching the round rods is arranged on the side wall of the No. 1 fixed frame, and a No. 1 elastic member is connected between the limit plate and the connecting frame; the pressing block is fixedly connected to the outside of the bottom end of the limit plate, and the pressing block passes through the connecting frame.

[0010] Preferably, a plurality of No. 2 fixing frames are slidably connected to the outside of the connecting frame and away from the No. 1 fixing frame; a liquid inlet is provided on one side of the No. 2 fixing frame; a No. 1 filter plate is fixedly connected to the inner walls of the plurality of No. 2 fixing frames, and a accommodating cavity is provided between the liquid inlet and the No. 1 filter plate.

[0011] Preferably, the inner wall of the No. 1 filter plate is rotatably connected to a plurality of rotating rods; spiral blades are fixedly connected to the outside of the plurality of rotating rods.

[0012] Preferably, a scraper is fixedly connected to the outer periphery of the rotating rod; a brush plate is fixedly connected to the outside of the scraper, and both the scraper and the brush plate are in contact with the outer wall of the No. 1 filter plate.

[0013] Preferably, a sealing plate is fixedly connected to the outside of the connecting frame and located above the No. 1 fixing frame, and the sealing plate corresponds to the insulation barrel; a plurality of air holes are opened on the outside of the sealing plate.

[0014] Preferably, a No. 2 filter plate is slidably connected to the inside of the heat preservation barrel; two sliding plates are fixedly connected to the top of the No. 2 filter plate, and the two sliding plates are symmetrically arranged, and the two sliding plates are slidably connected to the inner wall of the heat preservation barrel; a scraper is fixedly connected to the top of the No. 2 filter plate; and a No. 2 elastic member is fixedly connected to the bottom of the No. 2 filter plate.

[0015] A method for degassing molten aluminum, which uses the above-mentioned molten aluminum degasser for degassing, and the steps of the method are as follows:

[0016] S1: First, inject the molten aluminum into the insulation barrel. The No. 2 filter plate filters the impurities in the aluminum for the first time. The electric slider drives the multiple graphite turntables at the bottom of the support frame to slide down and penetrate into the insulation barrel. The No. 2 filter plate is squeezed to the bottom of the insulation barrel by the graphite turntable. The sealing plate fits the top of the insulation barrel to seal the insulation barrel. The sealing plate squeezes the sliding plate to create a gap between the graphite turntable and the No. 2 filter plate to detect the safety status around the equipment.

[0017] S2: After detecting the surrounding safety status, the output end of the servo motor drives multiple graphite turntables to stir the aluminum liquid, introduces inert gas into the aluminum liquid, and adds refining agent into the insulation barrel. The No. 1 fixed frame cooperates with the dispersion plate to stir and disperse the bubbles in the aluminum liquid with the connecting frame, and the No. 2 fixed frame cooperates with the No. 1 filter plate to stir and collect impurities on the surface of the aluminum liquid;

[0018] S3: After the aluminum liquid is degassed, the output end of the servo motor drives the graphite turntable to reset, and the elastic force of the No. 2 elastic part squeezes the No. 2 filter plate to slide on the inner wall of the insulation barrel, and the scraper scrapes the impurities on the inner wall of the insulation barrel. The No. 2 filter plate filters the impurities in the aluminum liquid again, and finally the aluminum liquid after filtering and degassing is discharged from the discharge pipe for storage.

[0019] Preferably, the temperature of the aluminum liquid in S1 is 700° C. to 800° C.; the rotation speed of the graphite turntable in S2 is 400 to 600 r / min.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. The aluminum liquid degassing machine and degassing method described in the present invention can disperse the bubbles formed by the inert gas into a large number of fine bubbles by quickly rotating the multiple graphite turntables with the connecting frame, thereby improving the degassing effect on the aluminum liquid. The inert gas is injected from the No. 1 gas injection hole and sprayed from the No. 1 exhaust hole and the No. 2 exhaust hole, thereby playing a role in multi-directional spraying and mixing of the inert gas. The dispersion plate rotates with the connecting frame to disperse the bubbles generated by the inert gas, thereby improving the degassing effect of the aluminum liquid. The No. 1 elastic member is squeezed by the limit plate to slide inside the connecting frame, thereby controlling the clamping limit of the No. 1 fixing frame. The No. 2 fixing frame cooperates with the No. 1 filter plate to stir and filter the surface of the aluminum liquid, thereby collecting impurities on the surface of the aluminum liquid.

[0022] 2. The present invention discloses a degassing machine and a degassing method for molten aluminum. The spiral blades are arranged to rotate as the No. 2 fixed frame is stirred, thereby improving the mixing effect on the surface of the molten aluminum, accelerating the filtering flow of the molten aluminum at the No. 1 filter plate, and utilizing the scraper and the brush plate to scrape against the surface of the No. 1 filter plate as the spiral blades rotate, thereby reducing the attachment of impurities on the surface of the No. 1 filter plate and improving the filtering effect at the No. 1 filter plate. The sealing plate is used to seal against the surface of the insulation barrel to reduce the leakage of the inert gas inside the insulation barrel, and the No. 2 filter plate is slid inside the insulation barrel to filter the impurities in the molten aluminum. After the molten aluminum is degassed, the No. 2 elastic member squeezes the No. 2 filter plate to slide, and cooperates with the shovel to scrape the inner wall of the insulation barrel to reduce the residual impurities in the molten aluminum. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Figure 1 is a stereogram of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the graphite turntable in the present invention;

[0026] Figure 3 It is a structural schematic diagram of the limiting plate in the present invention;

[0027] Figure 4 It is a partial structural cross-sectional view of the second fixing frame in the present invention;

[0028] Figure 5 It is a structural schematic diagram of the No. 2 filter plate in the present invention;

[0029] Figure 6 It is a flow chart of the aluminum liquid degassing method of the present invention.

[0030] In the figure: 1. Machine base; 11. Fixed slide rail; 12. Electric slide block; 13. Support frame; 14. Servo motor; 15. Connecting frame; 16. Fixed seat; 17. Graphite turntable; 18. Insulation barrel; 19. Discharge pipe; 2. No. 1 air injection hole; 21. No. 1 exhaust hole; 22. No. 2 exhaust hole; 23. No. 1 fixed frame; 24. Dispersion plate; 3. Limiting plate; 31. Pressing block; 4. No. 2 fixed frame; 41. No. 1 filter plate; 5. Rotating rod; 51. Spiral blade; 6. Scraper; 61. Brush plate; 7. Sealing plate; 71. Air vent; 8. No. 2 filter plate; 81. Sliding plate; 82. Shovel; 83. No. 2 elastic part. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0032] like Figures 1 to 5As shown, an aluminum liquid degassing machine described in an embodiment of the present invention includes a machine base 1; a fixed slide rail 11 is fixedly connected to the top of the machine base 1; an electric slider 12 is slidably connected to the outside of the fixed slide rail 11; a support frame 13 is fixedly connected to the outside of the electric slider 12; a servo motor 14 is fixedly connected to the outside of the support frame 13; a connecting frame 15 is fixedly connected to the output end of the servo motor 14; a fixed seat 16 is fixedly connected to the bottom end of the connecting frame 15; a graphite turntable 17 is fixedly connected to the bottom end of the fixed seat 16, and a plurality of fixed seats 16 and graphite turntables 17 are provided, and a plurality of fixed seats 16 and graphite turntables 17 are connected to each other; an exhaust component is provided inside the connecting frame 15, and the exhaust component is used to eject inert gas; an insulation barrel 18 is fixedly connected to the top of the machine base 1 away from the fixed slide rail 11; a discharge pipe 19 is fixedly connected to the inside of the machine base 1 and below the insulation barrel 18, and the discharge pipe 19 is connected to the insulation barrel 18 The bottom end is connected; when the molten aluminum liquid is degassed, the aluminum liquid is injected into the interior of the insulation barrel 18, supported by the fixed slide rail 11 at the top of the machine base 1, and the electric slider 12 drives the support frame 13 to slide on the outside of the fixed slide rail 11 until the multiple graphite turntables 17 are moved to the interior of the insulation barrel 18 near the bottom, and the output end of the servo motor 14 drives the connecting frame 15 to rotate rapidly. A single fixed seat 16 and a graphite turntable 17 are a group, and the multiple groups of graphite turntables 17 at the bottom of the connecting frame 15 rotate accordingly, and the exhaust component is cooperated to spray inert gas to mix with the aluminum liquid, stir the aluminum liquid inside the insulation barrel 18, and discharge the hydrogen in the aluminum melt. Finally, after the exhaust is completed, the discharge pipe 19 is opened, and the discharge material is pumped out through the pipeline connected to the discharge pipe 19. The multiple graphite turntables 17 are synchronized with the exhaust component for degassing, so that the bubbles formed by the inert gas can be dispersed into a large number of fine bubbles, and the dispersion is better, thereby improving the discharge effect of hydrogen in the aluminum melt.

[0033] like Figures 1 to 3As shown, the exhaust assembly includes a No. 1 gas injection hole 2, a No. 1 exhaust hole 21, a No. 2 exhaust hole 22, a No. 1 fixing frame 23 and a dispersion plate 24; the No. 1 gas injection hole 2 is opened inside the connecting frame 15; the No. 1 exhaust hole 21 is opened inside the fixing seat 16; the No. 2 exhaust hole 22 is opened inside the graphite turntable 17, and the No. 1 gas injection hole 2, the No. 1 exhaust hole 21 and the No. 2 exhaust hole 22 are interconnected, and the hole diameter of the No. 1 exhaust hole 21 is smaller than the hole diameter of the No. 2 exhaust hole 22; a plurality of No. 1 fixing frames 23 are slidably connected to the outside of the connecting frame 15; the dispersion plate 24 is fixed to the inner wall of the No. 1 fixing frame 23; a limiting component is arranged on the outside of the connecting frame 15, and the limiting component is used to limit the No. 1 fixing frame 23 Limiting; when degassing the aluminum liquid, an external gas injection device is used to connect the No. 1 gas injection hole 2 of the connecting frame 15, and inert gas is injected from the No. 1 gas injection hole 2, and the inert gas is discharged from multiple No. 1 exhaust holes 21 and No. 2 exhaust holes 22. Since the diameter of the No. 1 exhaust hole 21 is smaller than the diameter of the No. 2 exhaust hole 22, the exhaust volume of the No. 2 exhaust hole 22 is larger than the exhaust volume of the No. 1 exhaust hole 21. Therefore, a large amount of inert gas is still discharged from the No. 2 exhaust hole 22, which has the effect of discharging the inert gas mixed with the aluminum liquid from different directions, and the multiple No. 1 fixing frames 23 are fixed by relying on the limiting assembly. The multiple No. 1 fixing frames 23 cooperate with the dispersion plate 24 to rotate with the connecting frame 15, which can break up the bubbles generated by the inert gas in the aluminum liquid and improve the mixed degassing effect of the inert gas.

[0034] The limiting assembly includes a limiting plate 3 and a pressing block 31; the plurality of limiting plates 3 are slidably connected to the inside of the connecting frame 15, and a plurality of round rods are arranged on the outside of the limiting plate 3, and mounting holes matching the round rods are arranged on the side wall of the No. 1 fixing frame 23, and a No. 1 elastic member is connected between the limiting plate 3 and the connecting frame 15; the pressing block 31 is fixedly connected to the outside of the bottom end of the limiting plate 3, and the pressing block 31 passes through the connecting frame 15; when the plurality of No. 1 fixing frames 23 are fixed and limited, the limiting plate 3 is supported by the No. 1 elastic member, and the pressing block 31 is pressed by pressing By sliding into the interior of the connecting frame 15, the pressing block 31 can drive the limiting plate 3 to squeeze and contract the No. 1 elastic member, and the multiple round rods can slide into the interior of the connecting frame 15 synchronously. At this time, the positions of the multiple No. 1 fixing frames 23 can be slidably adjusted according to the injection amount of the aluminum liquid in the insulation barrel 18, so as to adapt and mix the aluminum liquid with different liquid levels. After the adjustment is completed, the pressing block 31 is released, and the elastic force of the No. 1 elastic member is reset to drive the round rod on the limiting plate 3 to insert into the mounting hole of the side wall of the No. 1 fixing frame 23, thereby limiting the multiple No. 1 fixing frames 23.

[0035] like Figure 1 , Figure 2 and Figure 4As shown, a plurality of No. 2 fixing frames 4 are slidably connected to the outside of the connecting frame 15 and away from the No. 1 fixing frame 23; one side of the No. 2 fixing frame 4 has a liquid inlet; the inner wall of the No. 2 fixing frame 4 is fixedly connected to the No. 1 filter plate 41, and the liquid inlet and the No. 1 filter plate 41 are between the accommodating chamber; when the aluminum liquid is degassed, some impurities will gradually float to the surface of the aluminum liquid with stirring, and the No. 2 fixing frame 4 is slidably installed on the outside of the connecting frame 15, adjusted to the height of the aluminum liquid surface in the insulation barrel 18, and the round rod of the limiting plate 3 is inserted into the inner wall of the No. 2 fixing frame 4 for limiting, and the No. 2 fixing frame 4 rotates with the connecting frame 15, and the aluminum liquid enters the No. 2 fixing frame 4 through the liquid inlet, and the No. 1 filter plate 41 filters the impurities in the aluminum liquid, and the No. 1 filter plate 41 cooperates with the No. 2 fixing frame 4 to stir and collect the impurities on the surface of the aluminum liquid, and collect the impurities in the accommodating chamber of the No. 2 fixing frame 4, thereby reducing the residual impurities in the aluminum liquid.

[0036] The inner wall of the No. 1 filter plate 41 is rotatably connected to a plurality of rotating rods 5; the outer sides of the plurality of rotating rods 5 are fixedly connected to spiral blades 51; when collecting impurities in the molten aluminum inside the insulation barrel 18, the No. 2 fixing frame 4 is used to stir the surface of the molten aluminum along with the connecting frame 15, and the plurality of spiral blades 51 are installed on the No. 1 filter plate 41 in conjunction with the rotating rods 5. As the molten aluminum enters the No. 2 fixing frame 4 for filtration, the flow of the molten aluminum drives the plurality of spiral blades 51 to stir synchronously, thereby improving the mixing effect on the surface of the molten aluminum and accelerating the filtration flow of the molten aluminum at the No. 1 filter plate 41.

[0037] A scraper 6 is fixedly connected to the outer periphery of the rotating rod 5; a brush plate 61 is fixedly connected to the outside of the scraper 6, and the scraper 6 and the brush plate 61 are both attached to the outer wall of the No. 1 filter plate 41; when the No. 1 filter plate 41 filters impurities in the aluminum liquid for a long time, a large amount of impurities adhere to the surface of the No. 1 filter plate 41 and cause blockage, and the spiral blade 51 is rotated with the stirring of the No. 2 fixing frame 4, and the spiral blade 51 synchronously drives the scraper 6 set at the other end of the rotating rod 5 to rotate and scrape the surface of the No. 1 filter plate 41, and cooperates with the brush plate 61 to clean the surface of the No. 1 filter plate 41, thereby reducing the attachment of impurities on the surface of the No. 1 filter plate 41 and improving the filtering effect of the No. 1 filter plate 41.

[0038] like Figure 1 and Figure 2As shown, a sealing plate 7 is fixedly connected to the outside of the connecting frame 15 and located above the No. 1 fixing frame 23, and the sealing plate 7 corresponds to the insulation barrel 18; a plurality of air holes 71 are provided on the outside of the sealing plate 7; when degassing the aluminum liquid, the sealing plate 7 is fixed to the outside of the connecting frame 15, and as the plurality of No. 1 fixing frames 23 penetrate into the insulation barrel 18, the sealing plate 7 is also attached to the top of the insulation barrel 18 for sealing, and the sealing plate 7 can reduce the leakage speed of the inert gas and the stirring and splashing of the aluminum liquid, and at the same time, a small amount of gas is slowly leaked by relying on the plurality of air holes 71 provided on the sealing plate 7, thereby reducing the excessive retention of inert gas in the insulation barrel 18.

[0039] like Figure 1 and Figure 5 As shown, the inside of the insulation barrel 18 is slidably connected with a No. 2 filter plate 8; the top of the No. 2 filter plate 8 is fixedly connected with two sliding plates 81, and the two sliding plates 81 are symmetrically arranged, and the two sliding plates 81 are slidably connected to the inner wall of the insulation barrel 18; the top of the No. 2 filter plate 8 is fixedly connected with a scraper 82; the bottom of the No. 2 filter plate 8 is fixedly connected with a No. 2 elastic member 83; after the aluminum liquid is degassed, some aluminum liquid residues are easy to remain at the bottom of the insulation barrel 18 and are difficult to clean. The No. 2 filter plate 8 is slidably installed in the insulation barrel 18. When the aluminum liquid is injected into the insulation barrel 18, the No. 2 filter plate 8 filters the impurities in the aluminum liquid, and as the multiple graphite turntables 17 penetrate into the insulation barrel 18, the No. 2 filter plate 8 filters the impurities in the aluminum liquid. During the internal process, the bottom end of the sealing plate 7 is pressed down against the top ends of the two sliding plates 81, and the No. 2 filter plate 8 cooperates with the two sliding plates 81 to slide down synchronously until the sealing plate 7 is pressed against the top end of the insulation barrel 18. At this time, the No. 2 elastic member 83 is squeezed and contracted by the No. 2 filter plate 8, and a distance is left between the No. 2 filter plate 8 and the graphite turntable 17 to avoid friction with the No. 2 filter plate 8 when the graphite turntable 17 rotates. When the aluminum liquid is degassing is completed, the sealing plate 7 is reset, and the No. 2 elastic member 83 elastically squeezes the No. 2 filter plate 8 to slide up. The No. 2 filter plate 8 filters the impurities at the bottom of the aluminum liquid and floats them up, and cooperates with the shovel 82 to scrape the inner wall of the insulation barrel 18 to reduce the residual impurities in the aluminum liquid inside the insulation barrel 18.

[0040] like Figure 6 As shown, a method for degassing molten aluminum is provided. The method uses the molten aluminum degasser described above for degassing. The steps of the method are as follows:

[0041] S1: First, the molten aluminum liquid is injected into the insulation barrel 18, and the No. 2 filter plate 8 filters the impurities in the aluminum liquid for the first time. The electric slider 12 drives the multiple graphite turntables 17 at the bottom of the support frame 13 to slide down and penetrate into the insulation barrel 18. The No. 2 filter plate 8 is squeezed to the bottom end of the insulation barrel 18 by the graphite turntable 17. The sealing plate 7 fits the top of the insulation barrel 18 to seal the insulation barrel 18. The sealing plate 7 squeezes the sliding plate 81 to create a gap between the graphite turntable 17 and the No. 2 filter plate 8, and the safety status around the detection equipment is detected;

[0042] S2: After the surrounding safety status is detected, the output end of the servo motor 14 drives multiple graphite turntables 17 to stir the aluminum liquid, introduce inert gas into the aluminum liquid, and add refining agent into the insulation barrel 18. The No. 1 fixing frame 23 cooperates with the dispersion plate 24 to stir and disperse the bubbles in the aluminum liquid with the connecting frame 15, and the No. 2 fixing frame 4 cooperates with the No. 1 filter plate 41 to stir and collect impurities on the surface of the aluminum liquid;

[0043] S3: After the aluminum liquid is degassed, the output end of the servo motor 14 drives the graphite turntable 17 to reset, and the second elastic member 83 elastically squeezes the second filter plate 8 to slide on the inner wall of the insulation barrel 18, and the scraper 82 scrapes the impurities on the inner wall of the insulation barrel 18. The second filter plate 8 filters the impurities in the aluminum liquid again, and finally the aluminum liquid after filtering and degassing is discharged from the discharge pipe 19 for storage.

[0044] The temperature of the aluminum liquid in the S1 is 700° C. to 800° C.; the rotation speed of the graphite turntable 17 in the S2 is 400 to 600 r / min.

[0045] Working process: When degassing the molten aluminum liquid, the aluminum liquid is injected into the insulation barrel 18, supported by the fixed slide rail 11 at the top of the machine base 1, and the electric slider 12 drives the support frame 13 to slide on the outside of the fixed slide rail 11 until the multiple graphite turntables 17 are moved to the inside of the insulation barrel 18 near the bottom. The output end of the servo motor 14 drives the connecting frame 15 to rotate rapidly. A single fixed seat 16 and a graphite turntable 17 are a group. The multiple groups of graphite turntables 17 at the bottom of the connecting frame 15 rotate accordingly, and the exhaust component sprays inert gas to mix with the aluminum liquid, stirs the aluminum liquid in the insulation barrel 18, and discharges hydrogen in the aluminum melt. Finally, after the exhaust is completed, the discharge pipe 19 is opened and the material is pumped out through the pipeline connected to the discharge pipe 19. Multiple graphite turntables 17 are synchronously cooperated with the exhaust assembly for degassing, and the bubbles formed by the inert gas can be dispersed into a large number of fine bubbles with better dispersibility, thereby improving the discharge effect of hydrogen in the aluminum melt; when degassing the aluminum liquid, an external gas injection device is used to connect the No. 1 gas injection hole 2 of the connecting frame 15, and the inert gas is injected from the No. 1 gas injection hole 2, and the inert gas is discharged from multiple No. 1 exhaust holes 21 and No. 2 exhaust holes 22. Since the diameter of the No. 1 exhaust hole 21 is smaller than that of the No. 2 exhaust hole 22, the exhaust volume of the No. 2 exhaust hole 22 is larger than that of the No. 1 exhaust hole 21. Therefore, a large amount of inert gas is still discharged from the No. 2 exhaust hole 22, which has the effect of discharging the inert gas mixed with the aluminum liquid from different directions, and the multiple exhaust holes 21 are connected by the limit assembly. The No. 1 fixing frame 23 is fixed, and multiple No. 1 fixing frames 23 cooperate with the dispersion plate 24 to rotate with the connecting frame 15, which can disperse the bubbles generated by the inert gas in the aluminum liquid and improve the mixing and degassing effect of the inert gas; when the multiple No. 1 fixing frames 23 are fixed and limited, the No. 1 elastic member is used to support the limiting plate 3, and the pressing block 31 is pressed to slide into the interior of the connecting frame 15, and the pressing block 31 can drive the limiting plate 3 to squeeze and contract the No. 1 elastic member, and multiple round rods slide into the interior of the connecting frame 15 synchronously. At this time, the positions of the multiple No. 1 fixing frames 23 can be slidably adjusted according to the injection amount of the aluminum liquid in the insulation barrel 18, so as to adapt to the mixing of aluminum liquids with different liquid levels. After the adjustment is completed, the pressing block 31 is released, and the elastic force of the No. 1 elastic member is reset to drive the limiting The round rod on the plate 3 is inserted into the mounting hole of the side wall of the No. 1 fixing frame 23, thereby limiting the position of multiple No. 1 fixing frames 23; when the aluminum liquid is degassed, some impurities will gradually float to the surface of the aluminum liquid with stirring, and the No. 2 fixing frame 4 is slidably installed on the outside of the connecting frame 15, adjusted to the height of the aluminum liquid surface in the insulation barrel 18, and the round rod of the limiting plate 3 is inserted into the inner wall of the No. 2 fixing frame 4 for limiting, and the No. 2 fixing frame 4 rotates with the connecting frame 15, and the aluminum liquid enters the No. 2 fixing frame 4 through the liquid inlet, and the No. 1 filter plate 41 filters the impurities in the aluminum liquid. The No. 1 filter plate 41 cooperates with the No. 2 fixing frame 4 to stir and collect the impurities on the surface of the aluminum liquid, and collect the impurities in the accommodating cavity of the No. 2 fixing frame 4, thereby reducing the residual impurities in the aluminum liquid;When collecting impurities in the aluminum liquid inside the insulation barrel 18, the No. 2 fixing frame 4 is used to stir at the surface of the aluminum liquid along with the connecting frame 15, and multiple spiral blades 51 are installed on the No. 1 filter plate 41 in cooperation with the rotating rod 5. As the aluminum liquid enters the No. 2 fixing frame 4 for filtration, the flow of the aluminum liquid drives the multiple spiral blades 51 to stir synchronously, thereby improving the mixing effect on the surface of the aluminum liquid and accelerating the filtering flow of the aluminum liquid at the No. 1 filter plate 41; when the No. 1 filter plate 41 filters impurities in the aluminum liquid for a long time, a large amount of impurities adhere to the surface of the No. 1 filter plate 41 and cause blockage, and the spiral blades 51 are used to rotate along with the stirring of the No. 2 fixing frame 4, and the spiral blades 51 synchronously drive the scraper 6 set at the other end of the rotating rod 5 to rotate and scrape the surface of the No. 1 filter plate 41, and cooperate with the brush plate 61 to clean the surface of the No. 1 filter plate 41, thereby reducing the attachment of impurities on the surface of the No. 1 filter plate 41 and improving the filtering effect of the No. 1 filter plate 41;

[0046] When degassing the aluminum liquid, the sealing plate 7 is fixed on the outside of the connecting frame 15. As the multiple No. 1 fixing frames 23 penetrate into the insulation barrel 18, the sealing plate 7 is also attached to the top of the insulation barrel 18 for sealing. The sealing plate 7 can reduce the leakage rate of the inert gas and reduce the stirring and splashing of the aluminum liquid. At the same time, a small amount of gas is slowly leaked out by relying on the multiple air holes 71 opened on the sealing plate 7, thereby reducing the excessive retention of inert gas in the insulation barrel 18. After degassing the aluminum liquid, some aluminum liquid residues are easily left at the bottom of the insulation barrel 18 and are difficult to clean. The No. 2 filter plate 8 is slidably installed in the insulation barrel 18. When the aluminum liquid is injected into the insulation barrel 18, the No. 2 filter plate 8 filters the impurities in the aluminum liquid. In the process of multiple graphite turntables 17 penetrating into the insulation barrel 18, the bottom end of the sealing plate 7 is pressed down against the top ends of the two sliding plates 81, and the No. 2 filter plate 8 cooperates with the two sliding plates 81 to slide down synchronously until the sealing plate 7 is pressed against the top end of the insulation barrel 18. At this time, the No. 2 elastic member 83 is squeezed and contracted by the No. 2 filter plate 8, and a distance is left between the No. 2 filter plate 8 and the graphite turntable 17 to avoid friction with the No. 2 filter plate 8 when the graphite turntable 17 rotates. When the aluminum liquid is degassing is completed, the sealing plate 7 is reset, and the No. 2 elastic member 83 elastically squeezes the No. 2 filter plate 8 to slide up. The No. 2 filter plate 8 filters the impurities at the bottom of the aluminum liquid and floats them up, and cooperates with the shovel 82 to scrape the inner wall of the insulation barrel 18 to reduce the residual impurities in the aluminum liquid inside the insulation barrel 18.

[0047] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A degasser for molten aluminum, characterized in that: The invention comprises a machine base (1); a fixed slide rail (11) is fixedly connected to the top of the machine base (1); an electric slider (12) is slidably connected to the outside of the fixed slide rail (11); a support frame (13) is fixedly connected to the outside of the electric slider (12); a servo motor (14) is fixedly connected to the outside of the support frame (13); a connecting frame (15) is fixedly connected to the output end of the servo motor (14); a fixing seat (16) is fixedly connected to the bottom end of the fixing seat (16); a graphite turntable ( 17), and a plurality of the fixed seats (16) and the graphite turntable (17) are provided, and the plurality of fixed seats (16) and the graphite turntable (17) are connected to each other; an exhaust assembly is provided inside the connecting frame (15), and the exhaust assembly is used to eject inert gas; a heat preservation barrel (18) is fixedly connected to the top of the machine base (1) away from the fixed slide rail (11); a discharge pipe (19) is fixedly connected to the inside of the machine base (1) and below the heat preservation barrel (18), and the discharge pipe (19) is connected to the bottom end of the heat preservation barrel (18); The exhaust assembly comprises a No. 1 air injection hole (2), a No. 1 exhaust hole (21), a No. 2 exhaust hole (22), a No. 1 fixing frame (23) and a dispersion plate (24); the No. 1 air injection hole (2) is arranged inside the connecting frame (15); the No. 1 exhaust hole (21) is arranged inside the fixing seat (16); the No. 2 exhaust hole (22) is arranged inside the graphite turntable (17), and the No. 1 air injection hole (2), the No. 1 exhaust hole (21) and the No. 2 exhaust hole (22) are interconnected, and the hole diameter of the No. 1 exhaust hole (21) is smaller than the hole diameter of the No. 2 exhaust hole (22); a plurality of No. 1 fixing frames (23) are slidably connected to the outside of the connecting frame (15); the dispersion plate (24) is fixed to the inner wall of the No. 1 fixing frame (23); a limiting assembly is arranged outside the connecting frame (15), and the limiting assembly is used to limit the No. 1 fixing frame (23); The limiting assembly comprises a limiting plate (3) and a pressing block (31); a plurality of the limiting plates (3) are slidably connected to the inside of the connecting frame (15), and a plurality of round rods are arranged outside the limiting plates (3); a mounting hole matching the round rods is arranged on the side wall of the No. 1 fixing frame (23); and a No. 1 elastic member is connected between the limiting plate (3) and the connecting frame (15); the pressing block (31) is fixedly connected to the outside of the bottom end of the limiting plate (3), and the pressing block (31) passes through the connecting frame (15).

2. The aluminum liquid degasser according to claim 1, characterized in that: A plurality of second fixing frames (4) are slidably connected to the outside of the connecting frame (15) and away from the first fixing frame (23); one side of the second fixing frame (4) has a liquid inlet, and the inner walls of the plurality of second fixing frames (4) are fixedly connected to a first filter screen plate (41), and a receiving cavity is formed between the liquid inlet and the first filter screen plate (41).

3. The aluminum liquid degasser according to claim 2, characterized in that: The inner wall of the first filter plate (41) is rotatably connected to a plurality of rotating rods (5); spiral blades (51) are fixedly connected to the outside of the plurality of rotating rods (5).

4. The aluminum liquid degasser according to claim 3, characterized in that: A scraper (6) is fixedly connected to the outer periphery of the rotating rod (5); a brush plate (61) is fixedly connected to the outside of the scraper (6), and both the scraper (6) and the brush plate (61) are in contact with the outer wall of the first filter plate (41).

5. The aluminum liquid degasser according to claim 1, characterized in that: A blocking plate (7) is fixedly connected to the outside of the connecting frame (15) and located above the first fixing frame (23), and the blocking plate (7) corresponds to the heat preservation barrel (18); a plurality of air holes (71) are formed on the outside of the blocking plate (7).

6. The aluminum liquid degasser according to claim 5, characterized in that: A second filter plate (8) is slidably connected inside the heat preservation barrel (18); two sliding plates (81) are fixedly connected to the top of the second filter plate (8), and the two sliding plates (81) are symmetrically arranged, and the two sliding plates (81) are slidably connected to the inner wall of the heat preservation barrel (18); a scraper (82) is fixedly connected to the top of the second filter plate (8); and a second elastic member (83) is fixedly connected to the bottom of the second filter plate (8).

7. A method for degassing molten aluminum, the method using an aluminum liquid degasser according to any one of claims 1 to 6 for degassing, characterized in that: The steps of this method are as follows: S1: First, the molten aluminum liquid is injected into the interior of the insulation barrel (18), and the No. 2 filter plate (8) filters the impurities in the aluminum liquid for the first time. The electric slider (12) drives the multiple graphite turntables (17) at the bottom of the support frame (13) to slide down and penetrate into the insulation barrel (18). The No. 2 filter plate (8) is squeezed to the bottom end of the insulation barrel (18) by the graphite turntable (17). The sealing plate (7) fits the top of the insulation barrel (18) to seal the insulation barrel (18). The sealing plate (7) squeezes the sliding plate (81) to create a gap between the graphite turntable (17) and the No. 2 filter plate (8), and the safety status around the equipment is detected; S2: After the surrounding safety status is detected, the output end of the servo motor (14) drives a plurality of graphite turntables (17) to stir the aluminum liquid, introduces inert gas into the aluminum liquid, and adds a refining agent into the insulation barrel (18). The No. 1 fixing frame (23) cooperates with the dispersion plate (24) and the connecting frame (15) to stir and disperse the bubbles in the aluminum liquid, and the No. 2 fixing frame (4) cooperates with the No. 1 filter plate (41) to stir and collect impurities on the surface of the aluminum liquid; S3: After the aluminum liquid is degassed, the output end of the servo motor (14) drives the graphite turntable (17) to reset, the second elastic member (83) elastically squeezes the second filter plate (8) to slide up the inner wall of the insulation barrel (18), and the scraper (82) scrapes the impurities on the inner wall of the insulation barrel (18). The second filter plate (8) filters the impurities in the aluminum liquid again, and finally the aluminum liquid after filtering and degassing is discharged from the discharge pipe (19) for storage.

8. A method for degassing molten aluminum according to claim 7, characterized in that: The temperature of the aluminum liquid in the S1 is 700° C. to 800° C.; the rotation speed of the graphite turntable (17) in the S2 is 400 to 600 r / min.

Images