Continuous purification device for degassing and impurity removal of regenerated aluminum alloy melt

By designing a continuous purification device including stirring and filtering devices, the problem of hydrogen and impurities affecting the quality of castings in the production of recycled aluminum alloys was solved, and the effects of efficient purification and convenient maintenance were achieved.

CN223357716UActive Publication Date: 2025-09-19SHANGHAI JIAOTONG UNIV +1
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Patent Information

Application Number
CN202422689294.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-05
Publication Date
2025-09-19
Estimated Expiration
2034-11-05

AI Technical Summary

Technical Problem

In the existing recycled aluminum alloy production, hydrogen and impurities in the aluminum melt affect the quality and performance of castings. Traditional purification methods are inefficient, complex to operate, and may introduce new pollutants.

Method used

A continuous purification device including stirring, degassing and filtering devices is designed to remove hydrogen and impurities through inert gas stirring and ceramic filter filtering. The device is easy to disassemble and clean.

Benefits of technology

It achieves efficient removal of hydrogen and impurities, improves casting quality, reduces equipment wear and maintenance frequency, and meets environmental protection requirements.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a secondary aluminum alloy melt degassing and impurity removal continuous purification device which comprises a shell, a supporting device is fixedly arranged on the outer wall of the shell, a cover plate is arranged above the shell in a matched mode, a stirring device is arranged below the cover plate in a matched mode, and the stirring device comprises a stirring motor fixedly installed above the cover plate. A first gear is adaptively arranged at the output end of the stirring motor, a second gear is adaptively arranged on one side of the first gear, a stirring shaft is fixedly arranged on the inner wall of the second gear, a plurality of stirring rods are adaptively arranged on the surface of the stirring shaft, a through hole is formed in the stirring shaft, a degassing device is adaptively arranged below the stirring device, and a sealing device is fixedly arranged on the inner wall of the shell. And a filtering device is fixedly arranged below the sealing device, a collecting barrel is arranged below the filtering device, and through mutual cooperation of the structures, the purposes that the secondary aluminum can be efficiently purified, the device can be conveniently maintained after purification is completed, and meanwhile the purified secondary aluminum can be conveniently collected can be achieved.
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Description

Technical Field

[0001] The utility model relates to the technical field of aluminum alloy melt purification, in particular to a continuous purification device for degassing and removing impurities from recycled aluminum alloy melt. Background Art

[0002] During the production of recycled aluminum alloys, the molten aluminum typically contains hydrogen, oxides, and other impurities, which can affect the quality and performance of the castings. Hydrogen primarily originates from atmospheric moisture. When the molten aluminum is exposed to air, water molecules decompose into hydrogen and dissolve in the melt. Solid impurities include aluminum oxide (Al2O3), nitrides, carbides, and other non-metallic inclusions, which may originate from raw materials, smelting equipment, or environmental contamination. These impurities can cause defects such as porosity and inclusions in castings, affecting mechanical properties and appearance. Furthermore, impurity particles can cause wear on smelting equipment, and purifying the melt can reduce the frequency of equipment maintenance and replacement. Purifying the molten aluminum reduces the emission of waste slag and harmful gases, helping to meet environmental regulations and standards.

[0003] Traditional methods for purifying recycled aluminum primarily include static sedimentation, mechanical filtration, and chemical treatment. While these methods can remove impurities and gases to a certain extent, they suffer from low efficiency, complex operation, and high energy consumption. For example, static sedimentation requires long dwell times, mechanical filtration can easily cause equipment wear, and chemical treatment can introduce new contaminants. Therefore, the development of efficient, continuous, and automated purification equipment is a pressing need in the recycled aluminum industry.

[0004] In order to solve these problems, a continuous purification device for degassing and removing impurities from recycled aluminum alloy melt is proposed, which can efficiently purify the recycled aluminum, facilitate maintenance of the device after purification, and facilitate the collection of the purified recycled aluminum. Utility Model Content

[0005] The purpose of the utility model is to provide a continuous purification device for degassing and removing impurities from a recycled aluminum alloy melt, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the utility model provides the following technical solution: a continuous purification device for degassing and removing impurities from a recycled aluminum alloy melt, comprising a shell, a supporting device fixedly provided on the outer wall of the shell, a cover plate adapted to be provided above the shell, a stirring device adapted to be provided below the cover plate, a degassing device adapted to be provided below the stirring device, a closing device fixedly provided on the inner wall of the shell, a filtering device fixedly provided below the closing device, and a collecting cylinder provided below the filtering device;

[0007] The stirring device includes a stirring motor fixedly mounted above the cover plate, the output end of the stirring motor is adapted to be provided with a first gear, one side of the first gear is adapted to be provided with a second gear, the inner wall of the second gear is fixedly provided with a stirring shaft, the surface of the stirring shaft is adapted to be provided with a plurality of stirring rods, and a through hole is opened in the stirring shaft;

[0008] The degassing device comprises an air delivery pipe adapted to be installed on the inner wall of the stirring shaft, one end of the air delivery pipe is threadedly adapted to be provided with a plurality of degassing pipes, and a plurality of degassing holes are evenly arranged on the surface of the degassing pipe.

[0009] Furthermore, a heating coil is adapted to be provided on the inner wall of the shell.

[0010] Furthermore, the support device includes a support ring fixedly mounted on the outer wall of the shell, a telescopic rod fixedly provided below the support ring, a support plate fixedly provided at one end of the telescopic rod, a support shaft fixedly provided on the surface of the support plate, and a support shaft sleeve provided at one end of the telescopic rod.

[0011] Furthermore, a protective cover is fixedly provided on the surface of the cover plate, and the cover plate is threadedly installed on one end of the shell.

[0012] Furthermore, the closing device includes a closing motor symmetrically mounted on the outer wall of the shell, the output ends of the closing motors are adapted to be equipped with closing rods, the surfaces of the closing rods are fixed with closing plates, and the closing plates are adapted to the inner wall of the shell.

[0013] Furthermore, the filtering device includes a filtering ring fixedly mounted on the inner wall of the shell. The filtering ring is truncated cone-shaped. The inner wall of the filtering ring is provided with filtering grooves. The inner wall of the filtering ring is evenly provided with a plurality of ceramic filter screens.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] (1) In order to better purify the recycled aluminum, when in use, the control device is used to control the operation of the telescopic rod, so that the telescopic rod is raised, and the collecting cylinder is placed under the shell and on the surface of the support plate. Then, the control device is used to control the telescopic rod to be lowered, and the collecting cylinder is placed on the inner wall of the shell. By opening the cover plate, the cover plate drives the stirring device and the degassing device to be separated, and then the recycled aluminum melt is poured on the inner wall of the shell. The degassing pipe in the degassing device is threadedly installed at one end of the stirring shaft, so that the degassing pipe is fixedly installed at one end of the stirring shaft. Then, the cover plate is threadedly connected to one end of the shell, and the shell is sealed. The gas supply pipe is connected to the external gas supply device, so that the gas supply device discharges the inert gas into the degassing pipe through the gas supply pipe, and the degassing pipe discharges the input inert gas into the recycled aluminum melt through the degassing hole, so that a large number of fine bubbles are formed, which can effectively capture and take away the hydrogen in the melt, and the evenly installed degassing pipes can evenly discharge the inert gas into the recycled aluminum melt, ensuring To ensure that the bubbles are evenly distributed and fully react, the control device is used to control the operation of the stirring motor, so that the operation of the stirring motor drives the first gear to rotate, and the first gear drives the second gear to rotate, and the second gear drives the stirring shaft to rotate, and the stirring shaft drives several stirring rods on the surface to rotate, so that the stirring rod stirs during the regenerated aluminum reaction process, ensuring that the inert gas fully reacts with the regenerated aluminum. After the reaction is completed, the control device is used to control the operation of the closed motor, so that the closed motor drives the closing rod to rotate, and the closing rod drives the closing plate to rotate, so that the closing plate cancels the isolation of the shell, so that the regenerated aluminum melt flows into the filter ring and is filtered through the ceramic filter in the filter ring to effectively intercept tiny impurity particles, and then the regenerated aluminum melt flows through the frustum-mounted filter ring, and the filtered regenerated aluminum melt is collected in the collection tube, and then the control device is used to control the operation of the telescopic rod, so that the telescopic rod drives the shell to rise, so that the collection tube can be removed after the collection is completed.

[0016] (2) In order to facilitate cleaning of the device and the degassing device, the degassing pipe in the degassing device is connected to one end of the stirring shaft through a thread, so that the degassing pipe can be separated from the stirring shaft, which is convenient for replacement and cleaning, and prevents the degassing device from being blocked due to long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a continuous purification device for degassing and removing impurities from recycled aluminum alloy melt proposed by the utility model;

[0018] Figure 2 This is one of the cross-sectional structural diagrams of a continuous purification device for degassing and removing impurities from a recycled aluminum alloy melt proposed by the present invention;

[0019] Figure 3 This is the second schematic cross-sectional structure diagram of a continuous purification device for degassing and removing impurities from a recycled aluminum alloy melt proposed by the present invention.

[0020] In the figure: 1. Shell; 2. Support device; 3. Cover plate; 4. Stirring device; 5. Degassing device; 6. Closing device; 7. Filter device; 8. Collecting cylinder; 201. Support ring; 202. Telescopic rod; 203. Support plate; 204. Support shaft; 301. Protective cover; 401. Stirring motor; 402. First gear; 403. Second gear; 404. Stirring shaft; 405. Stirring rod; 501. Gas pipe; 502. Degassing pipe; 503. Degassing hole; 601. Closing motor; 602. Closing rod; 603. Closing plate; 701. Filter ring; 702. Ceramic filter. DETAILED DESCRIPTION

[0021] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0022] Example 1:

[0023] See also Figure 1-3The utility model provides a technical solution: a continuous purification device for degassing and removing impurities from a recycled aluminum alloy melt, comprising a shell 1, an inner wall of the shell 1 is adapted to be provided with a heating coil, an outer wall of the shell 1 is fixedly provided with a supporting device 2, the supporting device 2 comprises a supporting ring 201 fixedly mounted on the outer wall of the shell 1, a telescopic rod 202 is fixedly provided below the supporting ring 201, one end of the telescopic rod 202 is fixedly provided with a supporting plate 203, a support shaft 204 is fixedly provided on the surface of the supporting plate 203, and the support shaft 204 is sleeved on one end of the telescopic rod 202. A cover plate 3 is adapted to be provided above the shell 1, a protective cover 301 is fixedly provided on the surface of the cover plate 3, the cover plate 3 is threadedly mounted on one end of the shell 1, a stirring device 4 is adapted to be provided below the cover plate 3, the stirring device 4 comprises a stirring motor 401 fixedly mounted above the cover plate 3, an output end of the stirring motor 401 is adapted to be provided with a first gear 402, a side of the first gear 402 is adapted to be provided with a second gear 403, a stirring shaft 404 is fixedly provided on the inner wall of the second gear 403, and the stirring shaft 4 04 surface is adapted to be provided with a plurality of stirring rods 405, a through hole is opened in the stirring shaft 404, a degassing device 5 is adapted to be provided below the stirring device 4, the degassing device 5 comprises an air delivery pipe 501 adapted to be installed on the inner wall of the stirring shaft 404, a plurality of degassing pipes 502 are threadedly adapted at one end of the air delivery pipe 501, a plurality of degassing holes 503 are evenly provided on the surface of the degassing pipe 502, a closing device 6 is fixedly provided on the inner wall of the shell 1, the closing device 6 comprises a closed motor 601 symmetrically installed on the outer wall of the shell 1, the output end of the closed motor 601 is adapted to be provided with a closing rod 602, a closing plate 603 is fixed on the surface of the closing rod 602, and the closing plate 603 is adapted to the inner wall of the shell 1, a filtering device 7 is fixedly provided below the closing device 6, the filtering device 7 comprises a filtering ring 701 fixedly installed on the inner wall of the shell 1, the filtering ring 701 is frustum-shaped, a filtering groove is opened on the inner wall of the filtering ring 701, a plurality of ceramic filter screens 702 are evenly provided on the inner wall of the filtering ring 701, and a collecting cylinder 8 is provided below the filtering device 7;

[0024] The specific implementation process is as follows:

[0025] During use, the control device is used to control the operation of the telescopic rod 202, so that the telescopic rod 202 is raised, and the collecting cylinder 8 is placed under the shell 1 and on the surface of the support plate 203. Then, the control device is used to control the telescopic rod 202 to be lowered, and the collecting cylinder 8 is placed on the inner wall of the shell 1. By opening the cover plate 3, the cover plate 3 drives the stirring device 4 and the degassing device 5 to be separated, and then the recycled aluminum melt is poured on the inner wall of the shell 1. The degassing pipe 502 in the degassing device 5 is threadedly installed on one end of the stirring shaft 404, so that the degassing pipe 502 is fixed on one end of the stirring shaft 404. , then the cover plate 3 is threadedly connected to one end of the shell 1 to seal the shell 1, and the gas delivery pipe 501 is connected to the external gas delivery device, so that the gas delivery device discharges the inert gas through the gas delivery pipe 501 to the degassing pipe 502, and the degassing pipe 502 discharges the input inert gas through the degassing hole 503 into the recycled aluminum melt, so that a large number of fine bubbles are formed, which can effectively capture and take away the hydrogen in the melt, and the evenly installed degassing pipe 502 can evenly discharge the inert gas into the recycled aluminum melt, ensuring that the bubbles are evenly distributed and fully reacted, and at the same time use the control The control device controls the stirring motor 401 to operate, so that the operation of the stirring motor 401 drives the first gear 402 to rotate, so that the first gear 402 drives the second gear 403 to rotate, so that the second gear 403 drives the stirring shaft 404 to rotate, and the stirring shaft 404 drives a plurality of stirring rods 405 on the surface to rotate, so that the stirring rods 405 stir during the regeneration aluminum reaction process to ensure that the inert gas fully reacts with the regenerated aluminum. After the reaction is completed, the control device is used to control the closed motor 601 to operate, so that the closed motor 601 drives the closed rod 602 to rotate. The sealing rod 602 rotates to drive the sealing plate 603 to rotate, so that the sealing plate 603 cancels the isolation of the shell 1, and the recycled aluminum melt flows into the filter ring 701 and is filtered through the ceramic filter screen 702 in the filter ring 701, effectively intercepting tiny impurity particles, and then the recycled aluminum melt flows through the frustum-mounted filter ring 701, and the filtered recycled aluminum melt is collected in the collecting tube 8. Then, the control device is used to control the operation of the telescopic rod 202, so that the telescopic rod 202 drives the shell 1 to rise, so as to facilitate the removal of the collecting tube 8 after the collection.

[0026] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A continuous purification device for degassing and removing impurities from a recycled aluminum alloy melt, comprising a housing (1), characterized in that: A supporting device (2) is fixedly provided on the outer wall of the shell (1); a cover plate (3) is adapted to be provided above the shell (1); a stirring device (4) is adapted to be provided below the cover plate (3); a degassing device (5) is adapted to be provided below the stirring device (4); a closing device (6) is fixedly provided on the inner wall of the shell (1); a filtering device (7) is fixedly provided below the closing device (6); and a collecting cylinder (8) is provided below the filtering device (7); The stirring device (4) comprises a stirring motor (401) fixedly mounted above the cover plate (3); an output end of the stirring motor (401) is adapted to be provided with a first gear (402); a side of the first gear (402) is adapted to be provided with a second gear (403); a stirring shaft (404) is fixedly provided on the inner wall of the second gear (403); a surface of the stirring shaft (404) is adapted to be provided with a plurality of stirring rods (405); and a through hole is provided in the stirring shaft (404); The degassing device (5) comprises an air delivery pipe (501) adapted to be mounted on the inner wall of the stirring shaft (404); one end of the air delivery pipe (501) is threadedly adapted to be provided with a plurality of degassing pipes (502); and a plurality of degassing holes (503) are evenly arranged on the surface of the degassing pipes (502).

2. The continuous purification device for degassing and removing impurities from recycled aluminum alloy melt according to claim 1, characterized in that: The inner wall of the shell (1) is adapted to be provided with a heating coil.

3. The continuous purification device for degassing and removing impurities from recycled aluminum alloy melt according to claim 1, characterized in that: The support device (2) comprises a support ring (201) fixedly mounted on the outer wall of the housing (1); a telescopic rod (202) is fixedly provided below the support ring (201); a support plate (203) is fixedly provided at one end of the telescopic rod (202); a support shaft (204) is fixedly provided on the surface of the support plate (203); and the support shaft (204) is sleeved on one end of the telescopic rod (202).

4. The continuous purification device for degassing and removing impurities from recycled aluminum alloy melt according to claim 1, characterized in that: A protective cover (301) is fixedly provided on the surface of the cover plate (3), and the cover plate (3) is threadedly mounted on one end of the housing (1).

5. The continuous purification device for degassing and removing impurities from recycled aluminum alloy melt according to claim 1, characterized in that: The sealing device (6) comprises a sealing motor (601) symmetrically mounted on the outer wall of the housing (1); the output end of each sealing motor (601) is adapted to be provided with a sealing rod (602); the surface of each sealing rod (602) is fixedly provided with a sealing plate (603); and the sealing plate (603) is adapted to be provided with the inner wall of the housing (1).

6. The continuous purification device for degassing and removing impurities from recycled aluminum alloy melt according to claim 1, characterized in that: The filtering device (7) comprises a filtering ring (701) fixedly mounted on the inner wall of the housing (1); the filtering ring (701) is truncated cone-shaped; a filtering groove is provided on the inner wall of the filtering ring (701); and a plurality of ceramic filter screens (702) are evenly arranged on the inner wall of the filtering ring (701).