A kind of pore elimination type high-precision aluminum ingot casting equipment and production method

Abstract

The present invention discloses a pore-eliminating high-precision aluminum ingot casting equipment and a production method, and belongs to the technical field of aluminum ingot casting. A pore-eliminating high-precision aluminum ingot casting equipment comprises an outer shell and a sealed box cover, two rotor assemblies are arranged above the sealed box cover, a pump box is arranged on one side of the rotor assembly, two circulating air ports are arranged on the top of the pump box, and a constant temperature degassing box is arranged inside the outer shell. In order to solve the problem that the degassing equipment cannot effectively and quickly process the froth and scum generated inside the cavity after the inert gas is injected into the aluminum liquid to complete the reaction, and can only rely on subsequent equipment for secondary processing, and the whole process is very cumbersome, which affects the degassing efficiency, nitrogen enters the buried air pipe through the pump box and then is injected into the aluminum liquid from the vent hole. Under the influence of the rotor, the froth will flow from the froth flow window into the inside of the froth storage pipe, so that the froth and scum on the liquid surface can be cleaned up in time.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum slab casting, and in particular to a pore-eliminating high-precision aluminum slab casting device and a production method. Background Art

[0002] The deep well casting process is to inject the molten aluminum alloy into the well-shaped mold from the bottom, use the pressure and gravity of the closed mold to fully fill the well with aluminum alloy, cool and solidify in the mold environment, and finally obtain the desired aluminum product;

[0003] A Chinese patent with publication number CN212864906U discloses an aluminum ingot processing degassing device, in which a lifting and shrinking baffle is installed outside the stirring head. After the rotor is taken out of the smelting furnace, the lifting and shrinking baffle is opened downward to shield the rotor, thereby preventing the staff from contacting the rotor and improving the safety performance of the degassing equipment.

[0004] In the above patent, after the degassing equipment injects inert gas into the aluminum liquid to complete the reaction, it cannot effectively and quickly deal with the foam and slag generated inside the cavity, and can only rely on subsequent equipment for secondary processing. The whole process is very cumbersome, affecting the degassing efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide a pore-eliminating high-precision aluminum ingot casting equipment and a production method. Nitrogen enters the buried air pipe through a pump box and is then injected into the aluminum liquid from the vent hole. Under the influence of the rotor, the foam will flow from the foam flow window into the interior of the foam storage pipe, so that the foam and slag on the liquid surface can be cleaned up in time, which can solve the problems in the prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pore-eliminating high-precision aluminum ingot casting equipment, comprising an outer shell body and a sealed box cover, two rotor assemblies are arranged above the sealed box cover, a pump box is arranged on one side of the rotor assembly, and two circulating air ports are arranged on the top of the pump box, a constant temperature degassing box is arranged inside the outer shell body, and the constant temperature degassing box is connected to the outer shell body through a heating trough body, a purification chamber is arranged inside the constant temperature degassing box, a heat preservation chamber is arranged on one side of the purification chamber, a central partition is arranged between the purification chamber and the heat preservation chamber, an aluminum liquid inlet is arranged on one side of the top of the purification chamber, and an aluminum liquid outlet is arranged on one side of the top of the heat preservation chamber.

[0007] Preferably, support plates are provided on both sides of the top of the outer shell box body, and the support plates are connected to the outer shell box body by bolts. Limiting shaft rods are provided on both sides of the bottom of the sealed box cover, and the limiting shaft rods are slidably connected to the support plates. An anti-collision frame is provided on the outer side of the top of the sealed box cover, and the anti-collision frame is connected to the sealed box cover through a bracket. An integrally formed plywood is provided on the bottom of the sealed box cover, and the outer shell box body is fit-connected to the sealed box cover through the plywood.

[0008] Preferably, the rotor assembly includes a driving motor and a turbulent stirring shaft, a transmission rod is provided on one side of the driving motor, the transmission rod is rotatably connected to the driving motor, the turbulent stirring shaft is connected to the transmission rod by bolts, the turbulent stirring shaft extends to the interior of the purification chamber and the insulation chamber respectively, and a stirring blade is provided at the bottom of the turbulent stirring shaft.

[0009] Preferably, two air boxes are arranged below the sealed box cover, and the air boxes are connected to the pump box through flanges. The air boxes are respectively located above the purification chamber and the insulation chamber. An internally buried air pipe is arranged at the bottom of the air box, and an air valve interface is arranged inside the air box. A foam storage pipe is arranged inside the internally buried air pipe, and a foam suction pump pipe is arranged inside the foam storage pipe.

[0010] Preferably, a vent is provided at the bottom of the inner buried air pipe, and the inner buried air pipe is connected to the air box through an air valve interface. A plurality of foam flow windows are provided on the outer side of the top of the inner buried air pipe, and the foam flow windows extend to the interior of the foam storage pipe. The foam flow windows are at the same horizontal height as the aluminum liquid inlet and the aluminum liquid outlet, and limiting flow blocks are provided inside the aluminum liquid inlet and the aluminum liquid outlet.

[0011] Preferably, a co-location filter box is provided at the bottom of the constant temperature degassing box, and both ends of the co-location filter box extend into the purification chamber and the insulation chamber respectively. A horizontal sieve plate is provided above the co-location filter box, and the horizontal sieve plate is connected to the co-location filter box through a slot. The surface of one end of the horizontal sieve plate is provided with flow holes, and the surface of the other end of the horizontal sieve plate is provided with outlet holes.

[0012] Preferably, a flow cavity is provided inside the co-position filter box, a flow slope pad is provided inside the flow cavity, the flow cavity is interconnected with the purification cavity through the flow hole, the flow cavity is interconnected with the insulation cavity through the outlet hole, and an integrally formed suspended baffle is provided at the bottom of the horizontal screen plate, and the suspended baffle is located below the hole.

[0013] Preferably, a double-end connecting pipe is arranged below the outer shell box body, and the double-end connecting pipe includes a branch connecting pipe and a leakage valve vertical pipe. The leakage valve vertical pipe is installed above the branch connecting pipe, and the leakage valve vertical pipe is located inside the purification chamber and the insulation chamber. A transfer pipe port is arranged at the bottom of the double-end connecting pipe.

[0014] Preferably, a ring plate valve port is provided on the inner side of the top of the leakage valve vertical tube, a lifting piston is provided inside the ring plate valve port, an inner flow cavity is provided between the lifting piston and the leakage valve vertical tube, a through cavity is provided below the lifting piston, the through cavity and the inner flow cavity are interconnected, a valve plug is provided below the through cavity, a sliding rod is provided above the valve plug, the sliding rod is connected to the lifting piston, and the sliding rod is slidably connected to the leakage valve vertical tube.

[0015] A production method of a pore-eliminating high-precision aluminum ingot casting device comprises the following steps:

[0016] Step 1: The flow channel is connected to the aluminum liquid inlet, and the aluminum liquid flows into the purification chamber through the flow channel. The turbulent stirring shaft stirs the aluminum liquid in the purification chamber at a high speed;

[0017] Step 2: The pump box injects nitrogen into the aluminum liquid from the buried gas pipe and breaks it into tiny bubbles through the rotor. Some non-metallic inclusions in the aluminum liquid are adsorbed on the bubble surface, and useless hydrogen and some nitrogen bubbles attached to non-metallic inclusions float to the liquid surface;

[0018] Step 3: Some of the bubbles floating to the liquid surface will burst, and the other part will flow into the foam storage pipe through the foam flow window. The foam suction pump tube will extract the accumulated liquid at the bottom of the storage pipe, and the degassed aluminum liquid will enter the insulation chamber from the same-position filter box at the bottom;

[0019] Step 4: The heating element inside the outer casing will heat the two cavities inside the constant temperature degassing box. The aluminum liquid in the insulation chamber will also be stirred and degassed, and finally flow out through the aluminum liquid outlet.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. In the present invention, nitrogen enters the buried air pipe through the pump box and then is injected into the aluminum liquid from the vent hole. The nitrogen is broken into tiny bubbles by the rotor so that it is evenly dispersed in the molten metal. The gas partial pressure of the bubbles is zero. Since the hydrogen partial pressure in the aluminum liquid is high, the hydrogen in the aluminum liquid continuously diffuses into the bubbles. At the same time, some non-metallic inclusions in the aluminum liquid are adsorbed on the bubble surface. Useless hydrogen and some inert gas bubbles adhered to the non-metallic inclusions float to the liquid surface. Under the influence of the rotor, the foam will flow from the foam flow window into the inside of the foam storage tube. In this way, the foam and scum on the liquid surface can be cleaned up in time. After the foam and scum enter the inside of the foam storage tube along with part of the aluminum liquid, the foam suction pump tube extracts the foam and scum to prevent the foam and scum from flowing back into the cavity.

[0022] 2. In the present invention, the constant temperature degassing box is located at the bottom of the two cavities. The aluminum liquid in the purification chamber enters the constant temperature degassing box through the flow hole. A flow slope pad is provided inside the flow cavity. When the aluminum liquid passes through the flow slope pad, it is affected by the angle of the slope. The residual scum in the aluminum liquid will be intercepted in the bottom corner depressions of the two slopes. The suspended baffle under the matching flow hole can intercept and filter the residual filter residue. After filtering and interception, the aluminum liquid flows from the flow hole into the purification chamber. The flow cavity is provided inside the same filter box;

[0023] 3. In the present invention, the air pump briefly back-blows the inside of the branch connection pipe, and the back-blow can push the valve plug upward until the valve plug contacts the bottom of the through cavity. The rising of the valve plug will drive the lifting piston to extend upward. After the lifting piston is extended, it will be offset from the ring plate valve port to form an annular notch. At this time, the residue deposited at the bottom of the cavity flows into the inner flow cavity along the notch under the influence of gravity, and then enters the through cavity through the inner flow cavity and is finally discharged through the branch connection pipe. After rising for a short time, the lifting piston will close again under the pressure of the liquid to avoid excessive discharge of aluminum liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is the overall front view of the present invention;

[0025] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the internal structure of the sealed box cover of the present invention;

[0027] Figure 4 It is a schematic diagram of the overall side section structure of the present invention;

[0028] Figure 5 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the internally buried air pipe of the present invention;

[0030] Figure 7 It is a schematic diagram of the structure of the co-location filter box of the present invention;

[0031] Figure 8 It is a schematic diagram of the double-end pipe structure of the present invention.

[0032] In the figure: 1, outer casing; 2, sealing box cover; 3, pump box; 4, rotor assembly; 5, constant temperature degassing box; 6, double-end connecting pipe; 101, support plate; 102, heating tank; 201, limit shaft rod; 202, anti-collision frame; 203, joint plate; 301, circulation air port; 302, air box; 303, buried air pipe; 304, air valve interface; 3031, foam storage pipe; 3032, foam suction pump pipe; 3033, foam flow window; 3034, vent; 401, drive motor; 402, transmission rod; 403, turbulent stirring shaft; 4031, stirring blade ;501, purification chamber; 502, insulation chamber; 503, central partition; 504, flow limiting block; 505, co-position filter box; 5011, aluminum liquid inlet; 5021, aluminum liquid outlet; 5051, flow chamber; 5052, horizontal sieve plate; 5053, flow hole; 5054, outlet hole; 5055, suspended baffle; 5056, flow slope pad; 601, branch connection pipe; 602, leakage valve vertical pipe; 603, lifting piston; 604, transfer pipe port; 6021, ring plate valve port; 6022, inner flow chamber; 6023, through chamber; 6031, slide rod; 6032, valve plug. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In order to solve the problem that the degassing equipment cannot effectively and quickly process the froth and slag generated inside the cavity after injecting inert gas into the aluminum liquid to complete the reaction, it can only rely on subsequent equipment for secondary processing. The whole process is very cumbersome and affects the degassing efficiency; please refer to Figure 1-8 , this embodiment provides the following technical solutions:

[0035] A pore-eliminating high-precision aluminum ingot casting device comprises an outer shell body 1 and a sealed box cover 2. Two rotor assemblies 4 are arranged above the sealed box cover 2. A pump box 3 is arranged on one side of the rotor assembly 4. Two circulating gas ports 301 are arranged on the top of the pump box 3. The deep well casting process is to inject the molten aluminum alloy into the well-shaped mold from the bottom. Before injecting the mold, the aluminum liquid needs to be processed by a degassing device. The pump box 3 is responsible for injecting nitrogen into the constant temperature degassing box 3025 to participate in the reaction. The two circulating gas ports 301 on the top are used for conveying gas and the other for extracting and discharging the floating foam in the pipe. The outer shell body 1 is provided with A constant temperature degassing box 3025, which is connected to the outer casing 1 through a heating tank 102. A purification chamber 501 is provided inside the constant temperature degassing box 3025. A heat preservation chamber 502 is provided on one side of the purification chamber 501. A central partition 503 is provided between the purification chamber 501 and the heat preservation chamber 502. The purification chamber 501 is mainly used to perform a degassing operation on the aluminum liquid. After the degassing operation, the aluminum liquid enters the heat preservation chamber 502. The liquid levels of the heat preservation chamber 502 and the purification chamber 501 are consistent. An aluminum liquid inlet 5011 is provided on one side of the top of the purification chamber 501, and an aluminum liquid outlet 5021 is provided on one side of the top of the heat preservation chamber 502.

[0036] In this embodiment, support plates 101 are provided on both sides of the top of the outer shell box body 1, and the support plates 101 are connected to the outer shell box body 1 by bolts. Limiting shaft rods 201 are provided on both sides of the bottom of the sealed box cover 2, and the limiting shaft rods 201 are slidably connected to the support plates 101. An anti-collision frame 202 is provided on the outer side of the top of the sealed box cover 2, and the anti-collision frame 202 is connected to the sealed box cover 2 through a bracket. An integrally formed plywood 203 is provided at the bottom of the sealed box cover 2, and the outer shell box body 1 is fitted and connected to the sealed box cover 2 through the plywood 203. The rotor assembly 4 includes a driving motor 401 and a turbulent stirring shaft 403. A transmission rod 402 is provided on one side of the driving motor 401, and the transmission rod 402 is rotatably connected to the driving motor 401. The flow stirring shaft 403 is connected to the transmission rod 402 by bolts, and the turbulent stirring shaft 403 extends to the inside of the purification chamber 501 and the heat preservation chamber 502 respectively. A stirring blade 4031 is arranged at the bottom of the turbulent stirring shaft 403. The turbulent stirring shaft 403 is made of high-purity graphite. The centrifugal force generated by stirring the aluminum liquid is used to increase the contact area and contact time between the bubbles and the aluminum alloy liquid. During the purification and degassing process, nitrogen is introduced into the surface of the aluminum liquid in the box for covering and protection, so that the part of the turbulent stirring shaft 403 exposed to the aluminum alloy liquid is in an inert gas to prevent the rotor from high-temperature oxidation and extend the service life of the rotor. The impeller has a streamlined shape, which can reduce the resistance during rotation, and the frictional scouring force generated between the impeller and the aluminum alloy liquid is relatively small.

[0037] In this embodiment, two air boxes 302 are arranged below the sealed box cover 2, and the air boxes 302 are connected to the pump box 3 through flanges. The air boxes 302 are respectively located above the purification chamber 501 and the insulation chamber 502, and an inner buried air pipe 303 is arranged at the bottom of the air box 302. A valve interface 304 is arranged inside the air box 302, and a froth storage pipe 3031 is arranged inside the inner buried air pipe 303. A froth suction pump pipe 3032 is arranged inside the froth storage pipe 3031, and a vent hole 3034 is arranged at the bottom of the inner buried air pipe 303. Nitrogen enters the inner buried air pipe 303 through the pump box 3 and is then injected into the aluminum liquid from the vent hole 3034. The nitrogen is broken into tiny bubbles by the rotor so that it is evenly dispersed in the molten metal. The gas partial pressure of the bubbles is zero. Since the hydrogen partial pressure in the aluminum liquid is high, the hydrogen in the aluminum liquid continuously diffuses into the bubbles, and at the same time, some non-metallic inclusions in the aluminum liquid are adsorbed on the surface of the bubbles. The useless hydrogen and some inert gas bubbles adhered by non-metallic inclusions float to the liquid surface. The buried gas pipe 303 is connected to the gas box 302 through the gas valve interface 304. A plurality of foam flow windows 3033 are arranged on the outer side of the top of the buried gas pipe 303. The foam flow windows 3033 extend to the inside of the foam storage pipe 3031. The foam flow windows 3033 are at the same level as the aluminum liquid inlet 5011 and the aluminum liquid outlet 5021. The foam is located above the liquid surface. Under the influence of the rotor, the foam will flow from the foam flow windows 3033 into the inside of the foam storage pipe 3031, so that the foam and scum on the liquid surface can be cleaned up in time. After the foam and scum enter the inside of the foam storage pipe 3031 along with part of the aluminum liquid, the foam suction pump pipe 3032 extracts the foam and scum to prevent the foam and scum from flowing back into the cavity. The aluminum liquid inlet 5011 and the aluminum liquid outlet 5021 are both provided with limiting flow blocks 504.

[0038] In this embodiment, a co-location filter box 505 is provided at the bottom of the constant temperature degassing box 3025, and the two ends of the co-location filter box 505 extend to the inside of the purification chamber 501 and the insulation chamber 502 respectively. A horizontal sieve plate 5052 is provided above the co-location filter box 505, and the horizontal sieve plate 5052 is connected to the co-location filter box 505 through a slot. A flow hole 5053 is provided on the surface of one end of the horizontal sieve plate 5052, and an outlet hole 5054 is provided on the surface of the other end of the horizontal sieve plate 5052. The constant temperature degassing box 3025 is located at the bottom of the two cavities. The aluminum liquid in the purification chamber 501 enters the constant temperature degassing box 3025 through the flow hole 5053. After being filtered and intercepted by the flow slope pad 5056 and the suspended baffle 5055, the aluminum liquid flows out of the flow The hole 5053 flows into the purification chamber 501, and a flow chamber 5051 is arranged inside the same-position filter box 505, and a flow slope pad 5056 is arranged inside the flow chamber 5051. When the aluminum liquid passes through the flow slope pad 5056, it is affected by the angle of the slope body, and the residual scum in the aluminum liquid will be intercepted in the bottom corner depressions of the two slope bodies. The suspended baffle 5055 below the matching flow hole 5053 can intercept and filter the residual filter residue. The flow chamber 5051 is interconnected with the purification chamber 501 through the flow hole 5053, and the flow chamber 5051 is interconnected with the insulation chamber 502 through the outlet hole 5054. The bottom of the horizontal screen plate 5052 is provided with an integrally formed suspended baffle 5055, and the suspended baffle 5055 is located below the hole;

[0039] In this embodiment, a double-end union pipe 6 is arranged below the outer casing 1, and the double-end union pipe 6 includes a branch union pipe 601 and a leakage valve drop pipe 602, and the leakage valve drop pipe 602 is installed above the branch union pipe 601, and the leakage valve drop pipe 602 is located inside the purification chamber 501 and the insulation chamber 502. The leakage valve drop pipe 602 can discharge the reaction residues deposited at the bottom of the purification chamber 501 and the insulation chamber 502 to prevent excessive residues from being mixed with the aluminum liquid again during the centrifugal stirring process. The bottom of the double-end union pipe 6 is provided with The adapter pipe port 604 is connected in parallel with the discharge pipe and a set of air pumps. A ring plate valve port 6021 is provided on the inner side of the top of the leakage valve drop pipe 602. A lifting piston 603 is provided inside the ring plate valve port 6021. An inner flow cavity 6022 is provided between the lifting piston 603 and the leakage valve drop pipe 602. A through cavity 6023 is provided below the lifting piston 603. The through cavity 6023 and the inner flow cavity 6022 are interconnected. A valve plug 6032 is provided below the through cavity 6023. The valve plug 6032 is provided below the valve plug 6032. A slide bar 6031 is arranged above the valve 32, and the slide bar 6031 is connected to the lifting piston 603, and the slide bar 6031 is slidably connected to the leakage valve drop pipe 602. The rise of the slide bar 6031 will not be affected by resistance, but the slide bar 6031 will be affected by the damping of the groove body texture during the descent process to prevent the lifting piston 603 from descending too fast. The air pump is used to briefly back-blow the inside of the branch pipe 601, and the back-blow can push the valve plug 6032 upward until the valve plug 6032 and the bottom of the through cavity 6023 are connected. When the valve plug 6032 is in contact, the lifting of the valve plug 6032 will drive the lifting piston 603 to extend upward. After the lifting piston 603 is extended, it will be offset from the ring plate valve port 6021 to form an annular notch. At this time, the residue deposited at the bottom of the cavity flows into the inner flow cavity 6022 along the notch under the influence of gravity, and then enters the through cavity 6023 through the inner flow cavity 6022 and is finally discharged through the branch pipe 601. After rising for a short time, the lifting piston 603 will close again under the pressure of the liquid to avoid excessive discharge of aluminum liquid.

[0040] Working principle: the flow channel is connected with the aluminum liquid inlet 5011, and the aluminum liquid flows into the purification chamber 501 through the flow channel. The turbulent stirring shaft 403 stirs the aluminum liquid in the purification chamber 501 at a high speed. The pump box 3 injects nitrogen from the buried gas pipe 303 into the aluminum liquid and is broken into tiny bubbles by the rotor. Some non-metallic inclusions in the aluminum liquid are adsorbed on the bubble surface, and useless hydrogen and nitrogen bubbles attached to some non-metallic inclusions float to the liquid surface. Part of the bubbles floating to the liquid surface will burst, and the other part will flow into the froth storage pipe 3031 through the froth flow window 3033. The froth suction pump pipe 3032 extracts the accumulated liquid at the bottom of the storage pipe. The degassed aluminum liquid enters the insulation chamber 502 from the same-position filter box 505 at the bottom. The heating element inside the outer casing 1 will heat the two cavities inside the constant temperature degassing box 3025. The aluminum liquid in the insulation chamber 502 is also stirred and degassed, and finally flows out through the aluminum liquid outlet 5021.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pore-eliminating high-precision aluminum ingot casting device, comprising an outer casing (1) and a sealed casing cover (2), characterized in that: Support plates (101) are provided on both sides of the top of the outer casing (1), and the support plates (101) are connected to the outer casing (1) by bolts. Limiting shaft rods (201) are provided on both sides of the bottom of the sealing box cover (2), and the limiting shaft rods (201) are slidably connected to the support plates (101). An anti-collision frame (202) is provided on the outer side of the top of the sealing box cover (2), and the anti-collision frame (202) is connected to the sealing box cover (2) by a bracket. An integrally formed plywood (203) is provided at the bottom of the sealing box cover (2), and the outer casing (1) is fitted and connected to the sealing box cover (2) by the plywood (203). Two rotor assemblies (4) are provided above the sealing box cover (2), and the rotor A pump box (3) is provided on one side of the component (4), two circulating air ports (301) are provided on the top of the pump box (3), a constant temperature degassing box (5) is provided inside the outer casing (1), the constant temperature degassing box (5) is connected to the outer casing (1) via a heating tank (102), a purification chamber (501) is provided inside the constant temperature degassing box (5), a heat preservation chamber (502) is provided on one side of the purification chamber (501), a central partition (503) is provided between the purification chamber (501) and the heat preservation chamber (502), an aluminum liquid inlet (5011) is provided on one side of the top of the purification chamber (501), and an aluminum liquid outlet (5021) is provided on one side of the top of the heat preservation chamber (502); The rotor assembly (4) comprises a driving motor (401) and a turbulent stirring shaft (403); a transmission rod (402) is provided on one side of the driving motor (401); the transmission rod (402) is rotatably connected to the driving motor (401); the turbulent stirring shaft (403) is connected to the transmission rod (402) via bolts; the turbulent stirring shaft (403) extends to the inside of the purification chamber (501) and the heat preservation chamber (502), respectively; and a stirring blade (4031) is provided at the bottom of the turbulent stirring shaft (403); Two air boxes (302) are arranged below the sealed box cover (2). The air boxes (302) are connected to the pump box (3) via flanges. The air boxes (302) are respectively located above the purification chamber (501) and the heat preservation chamber (502). An internally buried air pipe (303) is arranged at the bottom of the air box (302). An air valve interface (304) is arranged inside the air box (302). A foam storage pipe (3031) is arranged inside the internally buried air pipe (303). A foam suction pump pipe (3032) is arranged inside the foam storage pipe (3031).

2. The pore-eliminating high-precision aluminum ingot casting equipment according to claim 1 is characterized in that: A vent hole (3034) is provided at the bottom of the buried air pipe (303), and the buried air pipe (303) is connected to the air box (302) via an air valve interface (304). A plurality of foam flow windows (3033) are provided on the outer side of the top of the buried air pipe (303), and the foam flow windows (3033) extend to the inside of the foam storage pipe (3031). The foam flow windows (3033) are at the same level as the aluminum liquid inlet (5011) and the aluminum liquid outlet (5021), and limiting flow blocks (504) are provided inside the aluminum liquid inlet (5011) and the aluminum liquid outlet (5021).

3. The pore-eliminating high-precision aluminum ingot casting equipment according to claim 2 is characterized in that: A co-location filter box (505) is arranged at the bottom of the constant temperature degassing box (5), and the two ends of the co-location filter box (505) extend into the purification chamber (501) and the insulation chamber (502) respectively. A horizontal sieve plate (5052) is arranged above the co-location filter box (505), and the horizontal sieve plate (5052) is connected to the co-location filter box (505) through a slot. A flow hole (5053) is arranged on the surface of one end of the horizontal sieve plate (5052), and an outlet hole (5054) is arranged on the surface of the other end of the horizontal sieve plate (5052).

4. The pore-eliminating high-precision aluminum ingot casting equipment according to claim 3 is characterized in that: The co-location filter box (505) is provided with a flow cavity (5051) inside, and a flow slope pad (5056) is provided inside the flow cavity (5051). The flow cavity (5051) is interconnected with the purification cavity (501) through the flow hole (5053), and the flow cavity (5051) is interconnected with the heat preservation cavity (502) through the outlet hole (5054). The bottom of the horizontal screen plate (5052) is provided with an integrally formed suspended baffle (5055), and the suspended baffle (5055) is located below the hole.

5. The pore-eliminating high-precision aluminum ingot casting equipment according to claim 4 is characterized in that: A double-end connecting pipe (6) is arranged below the outer casing (1), and the double-end connecting pipe (6) comprises a branch connecting pipe (601) and a leakage valve vertical pipe (602). The leakage valve vertical pipe (602) is installed above the branch connecting pipe (601), and the leakage valve vertical pipe (602) is located inside the purification chamber (501) and the heat preservation chamber (502). A transfer pipe port (604) is arranged at the bottom of the double-end connecting pipe (6).

6. The pore-eliminating high-precision aluminum ingot casting equipment according to claim 5, characterized in that: A ring plate valve port (6021) is provided on the inner side of the top of the leakage valve drop tube (602), a lifting piston (603) is provided inside the ring plate valve port (6021), an inner flow cavity (6022) is provided between the lifting piston (603) and the leakage valve drop tube (602), a through cavity (6023) is provided below the lifting piston (603), the through cavity (6023) and the inner flow cavity (6022) are interconnected, a valve plug (6032) is provided below the through cavity (6023), a sliding rod (6031) is provided above the valve plug (6032), the sliding rod (6031) is connected to the lifting piston (603), and the sliding rod (6031) is slidably connected to the leakage valve drop tube (602).

7. A method for producing a pore-eliminating high-precision aluminum ingot casting device, which is realized based on the pore-eliminating high-precision aluminum ingot casting device according to claim 6, characterized in that: The steps include: Step 1: The flow channel is connected to the aluminum liquid inlet (5011), and the aluminum liquid flows into the purification chamber (501) through the flow channel, and the turbulent stirring shaft (403) stirs the aluminum liquid in the purification chamber (501) at a high speed; Step 2: The pump box (3) injects nitrogen from the buried gas pipe (303) into the aluminum liquid and breaks it into tiny bubbles through the rotor. Some non-metallic inclusions in the aluminum liquid are adsorbed on the bubble surface, and useless hydrogen and some nitrogen bubbles attached to the non-metallic inclusions float to the liquid surface. Step 3: A portion of the bubbles floating to the liquid surface will burst, and the other portion will flow into the foam storage tube (3031) through the foam flow window (3033). The foam suction pump tube (3032) will extract the accumulated liquid at the bottom of the storage tube, and the degassed aluminum liquid will enter the insulation chamber (502) from the same-position filter box (505) at the bottom; Step 4: The heating element inside the outer casing (1) heats the two cavities inside the constant temperature degassing box (5), and the aluminum liquid in the insulation chamber (502) is also stirred and degassed, and finally flows out through the aluminum liquid outlet (5021).

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