Aluminum alloy smelting and impurity removing device

Abstract

The embodiment of the utility model provides an aluminum alloy smelting and impurity removing device, and relates to the technical field of aluminum alloy machining. The aluminum alloy smelting and impurity removing device comprises a smelting furnace, a hollow pipe is rotationally arranged in the smelting furnace, a limiting groove is formed in the outer side of the hollow pipe, the limiting groove is slidably connected with a moving block, one side of the moving block is connected with a scraping plate, the using height of the scraping plate is adjusted by sliding in the limiting groove, and the hollow pipe drives the scraping plate to rotate to scrape dross on the surface of molten aluminum. The moving block drives the scraping plate to slide in the limiting groove, the height of the scraping plate is adjusted according to the position of molten aluminum, the hollow pipe rotates to enable the scraping plate to scrape dross on the surface of the upper layer of the molten aluminum, the dross enters the scraping plate, the liquid is discharged through the meshes, impurities in the molten aluminum are reduced, the rotating rod drives the stirring blades to rotate, and the stirring effect is improved. And the stirring blades promote uniform distribution of impurities in the molten aluminum and accelerate the mixing reaction of the refining agent and the molten aluminum, so that the impurity removal effect is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum alloy processing, in particular to an aluminum alloy smelting and impurity removal device. Background Art

[0002] During the aluminum alloy smelting process, due to the high temperature, the aluminum liquid is often mixed with hydrogen after the high-temperature decomposition of water vapor, as well as a large number of non-metallic inclusions produced by the interaction between the aluminum alloy solution and the refractory materials of the furnace wall, refining agents, smelting tools, etc. Therefore, it is necessary to remove impurities during aluminum alloy smelting.

[0003] Among them, Chinese patent application number: CN201611054250.9 discloses a small aluminum alloy smelting degassing and impurity removal device, including a box body and a working cabin located in the box body; also includes a stirring mechanism, which is installed on the box body and consists of a driving device, a rotor, a rotating shaft and an outer tube, and is used to break the bubbles in the aluminum liquid in the working cabin; also includes a plurality of short partitions and high partitions spaced apart from the stirring mechanism in the length direction of the working cabin, so that the aluminum liquid in the working cabin can flow up and down in a zigzag manner along its length direction. This device can improve the degassing and impurity removal effect in the aluminum alloy smelting process, solve the defects of artificial degassing in the laboratory, improve the experimental efficiency and is easy to carry.

[0004] From the above, it can be seen that in the prior art, impurities in the filtrate are filtered through a ceramic filter plate. Although it plays a certain filtering role, there are many factors that produce impurities in the aluminum alloy during the smelting process. For example, after the refining agent is added during smelting, a layer of slag will be formed on the surface of the melt. At this time, the impurities need to be separated from the melt to prevent the melt from contacting with the air and oxidizing. When the refining agent and the melt are mixed, if the two are not fully reacted, the impurities in the melt are not easy to be evenly distributed, which reduces the impurity removal effect. Therefore, if impurities are not removed in other steps that are prone to generate impurities, it is easy to affect the quality of aluminum alloy smelting. Utility Model Content

[0005] The utility model aims to provide an aluminum alloy smelting impurity removal device, which can avoid the situation that the impurity removal is not performed in other steps that are prone to generate impurities, which is easy to affect the quality of aluminum alloy smelting.

[0006] The utility model provides an aluminum alloy smelting and impurity removal device, comprising a smelting furnace, wherein a hollow tube is rotatably arranged inside the smelting furnace, a limiting groove is arranged on the outer side of the hollow tube, the limiting groove is slidably connected with a moving block, a scraper is connected to one side of the moving block, the scraper is adjusted to a use height by sliding in the limiting groove, and the hollow tube rotates with the scraper to scrape off scum on the surface of the aluminum liquid.

[0007] In a specific embodiment, the interior of the scraper is concave inward, and a plurality of mesh holes are provided inside the scraper.

[0008] In a specific embodiment, a back plate is provided on one side of the scraper.

[0009] In a specific embodiment, a socket is provided on the upper side of the back plate, a cylinder is installed on the upper end of the smelting furnace, a piston end of the cylinder penetrates the smelting furnace and is connected to a plug rod, and the plug rod is plugged into the socket.

[0010] In a specific embodiment, the upper end of the hollow tube passes through the upper end of the smelting furnace and meshes with gear one, and gear two is rotatably arranged on the upper end of the smelting furnace, and gear one meshes with gear two, and gear two is driven by a motor.

[0011] In a specific embodiment, a rotating rod is rotatably arranged inside the hollow tube, and the lower end of the rotating rod passes through the bottom of the hollow tube and is connected to the stirring blade.

[0012] In a specific implementation, the upper end of the rotating rod passes through the upper end of the hollow tube and is connected to gear three, gear four is rotatably arranged on the upper end of the smelting furnace, gear three is meshed with gear four, and gear four is driven by a motor.

[0013] In a specific embodiment, a feed inlet and a discharge outlet are respectively provided at the upper and lower ends of the smelting furnace, and a valve is installed at the discharge outlet.

[0014] In a specific embodiment, the discharge port is connected to the feed end of the filter cartridge, the filter cartridge is in a conical structure, and a detachable filter plate is installed at the bottom of the filter cartridge.

[0015] In a specific embodiment, a sliding rod is provided on one side of the filter cartridge, the sliding rod is slidably connected to one side of the filter plate, a screw rod is rotatably provided on the other side of the filter cartridge, the screw rod is threadedly connected to the other side of the filter plate, and a fixing sleeve is provided at the lower end of the screw rod.

[0016] The aluminum alloy smelting and impurity removal device provided in the embodiment of the utility model has the following advantages compared with the prior art:

[0017] 1. The utility model uses a moving block to drive a scraper to slide in a limiting groove, adjusts the height of the scraper according to the position of the aluminum liquid, and rotates the hollow tube to make the scraper scrape the scum on the upper surface of the aluminum liquid, so that the scum enters the scraper and the liquid is discharged through the mesh, thereby reducing impurities in the aluminum liquid. Secondly, the rotating rod drives the stirring blade to rotate, and the stirring blade promotes the uniform distribution of impurities in the aluminum liquid, accelerates the mixing reaction of the refining agent and the aluminum liquid, and further improves the impurity removal effect.

[0018] 2. The utility model receives the aluminum liquid through a conical filter cylinder, and the aluminum liquid is filtered through a filter plate to reduce impurities in the aluminum liquid. The filter plate can be disassembled as the screw rotates, and the filter plate can be cleaned to maintain the efficiency of impurity filtering. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of a smelting furnace according to an embodiment of the utility model;

[0022] Figure 3 This is the second schematic diagram of the internal structure of the smelting furnace according to the embodiment of the utility model;

[0023] Figure 4 This is a schematic cross-sectional view of the filter cartridge structure of an embodiment of the utility model;

[0024] Figure 5 It is a partial schematic diagram of the filter cartridge structure of an embodiment of the utility model.

[0025] icon:

[0026] 1. Melting furnace; 11. Feed inlet; 12. Discharge outlet; 2. Filter cartridge; 21. Slide rod; 22. Screw rod; 23. Fixed sleeve; 24. Filter plate; 3. Hollow tube; 31. Limiting groove; 32. Moving block; 33. Scraper; 34. Mesh; 35. Back plate; 36. Socket; 37. Gear 1; 38. Gear 2; 4. Rotating rod; 41. Stirring blade; 42. Gear 3; 43. Gear 4; 5. Cylinder; 51. Plug rod. DETAILED DESCRIPTION

[0027] In the prior art, impurities in the filtrate are filtered through a ceramic filter plate. Although it has a certain filtering effect, there are many factors that cause impurities to be generated during the smelting process of aluminum alloy. For example, after the refining agent is added during smelting, a layer of slag will be formed on the surface of the melt. At this time, the impurities need to be separated from the melt to prevent the melt from contacting with the air and oxidizing. When the refining agent and the melt are mixed, if the two are not fully reacted, the impurities in the melt are not easy to be evenly distributed, which reduces the impurity removal effect. Therefore, if impurity removal is not performed in other steps where impurities are easily generated, it is easy to affect the quality of aluminum alloy smelting. Therefore, after research, an aluminum alloy smelting and impurity removal device is provided. When in use, the moving block drives the scraper to slide in the limit groove, the scraper height is adjusted according to the position of the aluminum molten, and the hollow tube is rotated to make the scraper scrape the scum on the upper surface of the aluminum liquid, so that the scum enters the scraper and the liquid is discharged through the mesh, thereby reducing impurities in the aluminum liquid. Secondly, the rotating rod rotates with the stirring blade, and the stirring blade promotes the uniform distribution of impurities in the aluminum liquid and accelerates the mixing reaction of the refining agent and the aluminum liquid, further improving the impurity removal effect, thereby solving the above-mentioned defects.

[0028] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0029] Please refer to Figures 1 to 5 The embodiment of the utility model provides an aluminum alloy smelting and impurity removal device, including a smelting furnace 1, wherein an inlet 11 and a discharge port 12 are respectively provided at the upper and lower ends of the smelting furnace 1, and a valve is installed at the discharge port 12, and aluminum liquid can be discharged after the valve is opened.

[0030] When smelting molten aluminum, it is necessary to add a refining agent. After the refining agent is added, a layer of slag will be formed on the surface of the molten aluminum. Therefore, it is necessary to separate the impurities from the molten aluminum to prevent the molten aluminum from coming into contact with the air and being oxidized. In order to remove impurities, a hollow tube 3 is rotatably arranged inside the smelting furnace 1, and a limiting groove 31 is provided on the outer side of the hollow tube 3. The limiting groove 31 is slidably connected to the moving block 32. A scraper 33 is connected to one side of the moving block 32. The scraper 33 is adjusted to a use height by sliding in the limiting groove 31. The hollow tube 3 rotates with the scraper 33 to scrape off the slag on the surface of the molten aluminum.

[0031] Among them, the upper end of the hollow tube 3 passes through the upper end of the smelting furnace 1 and meshes with the gear 1 37. The upper end of the smelting furnace 1 is rotatably provided with a gear 2 38. The gear 2 38 is driven by a motor. After the gear 2 38 rotates, the gear 1 37 and the gear 2 38 mesh, so that the gear 1 37 rotates with the hollow tube 3, and then the impurities on the surface of the filtrate are scraped into the scraper 33.

[0032] The scraper 33 is recessed inside so that impurities can be stored in the recessed scraper 33. A plurality of mesh holes 34 are provided inside the scraper 33 so that liquid can be discharged through the mesh holes 34. A back plate 35 is provided on one side of the scraper 33 to prevent impurities from falling out when there are a lot of them.

[0033] In order to adjust the use position of the scraper 33, a socket 36 is provided on the upper side of the back plate 35, and a cylinder 5 is installed on the upper end of the smelting furnace 1. The piston end of the cylinder 5 penetrates the smelting furnace 1 and is connected to the plug rod 51. The plug rod 51 is plugged into the socket 36. The cylinder 5 brings the plug rod 51 down and plugs it into the socket 36. The extension and retraction of the cylinder 5 can cause the scraper 33 to move up and down, and a notch is provided on one side of the socket 36. Therefore, when the scraper 33 is rotated by the hollow tube 3, the plug rod 51 moves out of the socket 36 from the notch. At this time, the cylinder 5 brings the plug rod 51 back to its original position, so that the scraper 33 rotates smoothly.

[0034] Furthermore, a rotating rod 4 is rotatably arranged inside the hollow tube 3, and the lower end of the rotating rod 4 passes through the bottom of the hollow tube 3 and is connected to the stirring blade 41. When the hollow tube 3 does not rotate, the rotating rod 4 drives the stirring blade 41 to rotate, thereby promoting uniform distribution of impurities in the aluminum liquid, accelerating the mixing reaction of the refining agent and the aluminum liquid, and improving the impurity removal effect.

[0035] In order to rotate the rotating rod 4, the upper end of the rotating rod 4 passes through the upper end of the hollow tube 3 and is connected to the gear three 42. The upper end of the smelting furnace 1 is rotatably provided with a gear four 43. The gear three 42 is meshed with the gear four 43. The gear four 43 is driven by a motor. When the gear four 43 rotates, the gear three 42 rotates with the rotating rod 4 to achieve stirring of the aluminum liquid.

[0036] Furthermore, the discharge port 12 is connected to the feed end of the filter cylinder 2, and a detachable filter plate 24 is installed at the bottom of the filter cylinder 2. After the aluminum liquid is discharged from the smelting furnace 1 into the filter cylinder 2, it is filtered through the filter plate 24 to effectively remove inclusions and impurities, and can block larger particles and impurities to ensure the purity of the aluminum liquid. The filter cylinder 2 has a conical structure, so that the impurities after filtering the filtrate can be completely accumulated on the filter plate 24, making it easy to clean the impurities.

[0037] In order to clean and replace the filter plate 24, a sliding rod 21 is provided on one side of the filter cylinder 2, and the sliding rod 21 is slidably connected to one side of the filter plate 24. A screw rod 22 is rotatably provided on the other side of the filter cylinder 2, and the screw rod 22 is threadedly connected to the other side of the filter plate 24. When the screw rod 22 rotates, the filter plate 24 is continuously lowered. When the filter plate 24 is separated from the screw rod 22, the filter plate 24 can be removed. A fixing sleeve 23 is provided at the lower end of the screw rod 22, and the fixing sleeve 23 is inserted into the lower end of the screw rod 22. When the filter plate 24 is removed, the fixing sleeve 23 needs to be removed.

[0038] In summary, the working principle of an aluminum alloy smelting and impurity removal device according to an embodiment of the utility model is as follows: an aluminum alloy raw material is placed in a smelting furnace 1 and a refining agent is added. When the aluminum alloy raw material is smelted into aluminum liquid, the cylinder 5 with the insertion rod 51 is inserted into the insertion hole 36 according to the position of the filtrate, and the scraper 33 is pushed down to a suitable position. At this time, the hollow tube 3 rotates with the scraper 33, and the scraper 33 collects impurities on the surface of the aluminum liquid. Secondly, when the hollow tube 3 is not in use, the rotating rod 4 rotates with the stirring blade 41 to mix the aluminum liquid and promote uniform distribution of impurities. When the aluminum liquid is smelted, the valve is opened to allow the aluminum liquid to enter the filter cylinder 2, and the aluminum liquid is filtered again through the filter plate 24.

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An aluminum alloy smelting and impurity removal device, comprising a smelting furnace (1), characterized in that: A hollow tube (3) is rotatably arranged inside the smelting furnace (1), a limiting groove (31) is provided on the outside of the hollow tube (3), the limiting groove (31) is slidably connected to a moving block (32), a scraper (33) is connected to one side of the moving block (32), the scraper (33) is adjusted in height by sliding in the limiting groove (31), and the hollow tube (3) rotates with the scraper (33) to scrape off scum on the surface of the aluminum liquid.

2. The aluminum alloy smelting impurity removal device according to claim 1, characterized in that: The interior of the scraper (33) is recessed inwards, and a plurality of mesh holes (34) are provided inside the scraper (33).

3. The aluminum alloy smelting impurity removal device according to claim 2, characterized in that: A back plate (35) is provided on one side of the scraper (33).

4. The aluminum alloy smelting impurity removal device according to claim 3 is characterized in that: A plug hole (36) is provided on the upper side of the back plate (35), a cylinder (5) is installed on the upper end of the smelting furnace (1), a piston end of the cylinder (5) penetrates the smelting furnace (1) and is connected to a plug rod (51), and the plug rod (51) is plugged into and matched with the plug hole (36).

5. The aluminum alloy smelting impurity removal device according to claim 4, characterized in that: The upper end of the hollow tube (3) passes through the upper end of the smelting furnace (1) and meshes with gear one (37). The upper end of the smelting furnace (1) is rotatably provided with gear two (38). The gear one (37) and gear two (38) are meshed. The gear two (38) is driven by a motor.

6. The aluminum alloy smelting impurity removal device according to claim 5, characterized in that: A rotating rod (4) is rotatably arranged inside the hollow tube (3), and the lower end of the rotating rod (4) passes through the bottom of the hollow tube (3) and is connected to the stirring blade (41).

7. The aluminum alloy smelting impurity removal device according to claim 6, characterized in that: The upper end of the rotating rod (4) passes through the upper end of the hollow tube (3) and is connected to the gear three (42). The upper end of the smelting furnace (1) is rotatably provided with a gear four (43). The gear three (42) is meshed with the gear four (43), and the gear four (43) is driven by a motor.

8. The aluminum alloy smelting impurity removal device according to claim 1, characterized in that: The upper and lower ends of the smelting furnace (1) are respectively provided with a feed inlet (11) and a discharge outlet (12), and a valve is installed at the discharge outlet (12).

9. The aluminum alloy smelting impurity removal device according to claim 8, characterized in that: The discharge port (12) is connected to the feed end of the filter cartridge (2); the filter cartridge (2) is of a conical structure, and a detachable filter plate (24) is installed at the bottom of the filter cartridge (2).

10. The aluminum alloy smelting impurity removal device according to claim 9, characterized in that: A sliding rod (21) is provided on one side of the filter cylinder (2), and the sliding rod (21) is slidably connected to one side of the filter plate (24). A screw rod (22) is rotatably provided on the other side of the filter cylinder (2), and the screw rod (22) is threadedly connected to the other side of the filter plate (24). A fixing sleeve (23) is provided at the lower end of the screw rod (22).

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