Efficient mixing device for aluminum alloy melt

Abstract

The utility model relates to the technical field of metal processing, and discloses an aluminum alloy melt efficient mixing device which comprises a mixing tank and smelting furnaces arranged on the two sides of the mixing tank, one smelting furnace is specially used for smelting pure aluminum blocks, and the other smelting furnace is commonly used for smelting iron, nickel or other alloy element raw materials. A conveying pipeline is arranged between each smelting furnace and the mixing tank in a communicating mode, a stirring mechanism is arranged in the mixing tank, and the stirring mechanism comprises a stirring shaft rotationally arranged in the mixing tank, a plurality of stirring blades distributed in the axial direction of the stirring shaft, a rotating disc arranged on the stirring shaft in a sleeving mode and a stirring motor driving the stirring shaft to rotate; the stirring shaft and the mixing tank are coaxially arranged, the rotating disc is located at the position, close to the bottom, in the mixing tank, the top of the rotating disc is provided with multiple sets of material guiding slopes in the axial direction of the rotating disc, the rotating disc is rotationally matched with the inner side wall of the mixing tank, and a heating assembly is arranged on the mixing tank. The method has the effect of effectively promoting refining of the primary phase of the aluminum alloy raw material.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of metal processing, in particular to an aluminum alloy melt high-efficiency mixing device. BACKGROUND

[0002] At present, in the aluminum alloy processing industry, especially for the preparation of low thermal expansion hypereutectic aluminum alloy, the industry generally pays attention to improving the uniformity of alloy composition and the refinement degree of primary phase, which is crucial for improving the mechanical properties and electric and thermal conductivity characteristics of the final product.

[0003] The existing aluminum alloy melt preparation usually adopts a single furnace to complete the smelting and mixing processes. Although this traditional method is simple in process, it is easy to cause uneven alloy composition in actual production, especially in the case of processing different melting point raw materials, it is difficult to ensure the sufficient dissolution and uniform distribution of added elements. In addition, the temperature control mechanism is lacking, which is not conducive to maintaining the stability of the melt state, so that the temperature drops quickly in the melt transmission process, further aggravating the problem of uneven distribution of alloy elements, ultimately affecting the quality stability of the finished product. CONTENT OF THE INVENTION

[0004] In order to effectively promote the refinement of the primary phase of the aluminum alloy raw material, the application provides an aluminum alloy melt high-efficiency mixing device.

[0005] The aluminum alloy melt high-efficiency mixing device provided by the application adopts the following technical scheme:

[0006] An aluminum alloy melt high-efficiency mixing device comprises a mixing tank and furnaces arranged on both sides of the mixing tank, one of which is used for smelting pure aluminum blocks, and the other is used for smelting iron or nickel, each of the furnaces is connected with the mixing tank through a conveying pipeline, a stirring mechanism is arranged in the mixing tank, the stirring mechanism comprises a stirring shaft rotatingly arranged in the mixing tank, a plurality of stirring blades distributed along the axial direction of the stirring shaft, a rotating disc sleeved on the stirring shaft, and a stirring motor for driving the stirring shaft to rotate, the stirring shaft is coaxially arranged with the mixing tank, the rotating disc is located at a position close to the bottom of the mixing tank, and a plurality of groups of material guiding inclined surfaces are arranged on the top of the rotating disc and around the axial direction of the rotating disc, the rotating disc is rotationally connected with the inner wall of the mixing tank, and a heating assembly is arranged on the mixing tank.

[0007] By adopting the technical scheme, the alloy raw materials and aluminum blocks in the two furnaces are melted to a flowing state and then added to the mixing tank in a precise proportion, and then the stirring motor is started to drive the stirring shaft to rotate, and the stirring blades are driven by the stirring shaft to form a strong turbulent field with high-speed rotation, rapidly stirring the molten materials in the mixing tank to form wave crests on the liquid surface, promoting frequent contact and friction between the two molten materials, greatly shortening the diffusion time, and thereby realizing uniform mixing on a macro scale. At the same time, the heating assembly provides heat to compensate for the natural cooling rate inside the mixing tank, so that the overall environment is always in a relatively stable thermal equilibrium state, which is conducive to the particle recrystallization activity on a micro level, generating finer and more uniform crystal organization morphology, effectively promoting the refinement of the primary phase of the aluminum alloy raw materials. The plurality of guide slopes on the rotating disc top have a plurality of stepped structures with a height difference, so that the molten materials can be flipped up and down when the rotating disc rotates, making the mixing of the molten material more uniform.

[0008] Optionally, the rotating disc is slidably sleeved on the stirring shaft, a sliding groove is formed on the side wall of the stirring shaft in parallel to the axial direction of the stirring shaft, a limiting column is arranged on the inner ring side wall of the rotating disc towards the stirring shaft, the limiting column is inserted into the sliding groove and slidably connected with the sliding groove, a corrugated guide groove is formed on the inner side wall of the mixing tank around the axial direction of the inner side wall, the corrugated height of the guide groove matches the length of the sliding groove, a guide column is arranged on the outer ring side wall of the rotating disc, and the guide column is inserted into the guide groove and slidably connected with the guide groove.

[0009] By adopting the above technical scheme, the corrugated guide groove guides the rotating disc to rise and fall during rotation in the mixing tank, improving the uniformity and stability of the mixing of the aluminum alloy melt by the stirring mechanism, which helps to improve the alloy composition distribution and improve the product quality.

[0010] Optionally, a plurality of mounting rings are equidistantly arranged on the stirring shaft along the axial direction of the stirring shaft, each mounting ring is slidably connected with the stirring shaft, a fixing bolt is arranged on the mounting ring, the fixing bolt is threadedly connected with the stirring shaft after being inserted into the mounting ring, and a plurality of stirring blades are circumferentially arranged on the mounting ring and abutted with the inner side wall of the mixing tank.

[0011] By adopting the above technical scheme, the mounting design of the fixing bolt enables the stirring blades to be firmly mounted on the mounting ring, and the number and position of the stirring blades can be adjusted according to actual needs. The abutment of the stirring blades with the inner side wall of the mixing tank not only increases the contact area of the materials during stirring, but also effectively reduces the residue of the materials during stirring, thereby realizing more uniform mixing of the melt and improving the mechanical properties and electrical and thermal conductivity characteristics of the final product.

[0012] Optionally, the heating assembly comprises a heat insulation sleeve arranged outside the mixing tank, an electric heating pipe arranged in the form of a coil on the side of the heat insulation sleeve close to the mixing tank, and a temperature measuring element arranged on the electric heating pipe; the outer wall of the heat insulation sleeve is provided with a controller; the temperature measuring element and the electric heating pipe are electrically connected to the controller.

[0013] By using the above technical scheme, the heating assembly continuously radiates heat by surrounding the mixing tank, thereby compensating for the natural cooling rate inside the system and keeping the overall environment in a relatively stable thermal balance. The temperature measuring element and the electric heating pipe are electrically connected to the controller, thereby realizing uniform and stable control of the temperature of the aluminum alloy melt during mixing, effectively improving the uniformity of the melt composition, and further improving the mechanical properties and electrical and thermal conductivity of the final product.

[0014] Optionally, a delivery pump is arranged on the delivery pipeline to guide the flow of the molten material into the inner cavity of the mixing tank; a flow meter is also arranged on the delivery pipeline, and the flow meter is located on the side of the delivery pump close to the furnace; the flow meter and the delivery pump are electrically connected to the controller.

[0015] By using the above technical scheme, the delivery pump on the delivery pipeline guides the efficient flow of the molten material into the inner cavity of the mixing tank, and the flow meter monitors the flow to ensure accurate control of the alloy composition. The flow meter and the delivery pump are electrically connected to the controller to realize automatic management, thereby effectively improving the smelting efficiency and the uniformity of the composition.

[0016] Optionally, a heat preservation sleeve is arranged on the part of the delivery pipeline exposed outside the mixing tank and the furnace.

[0017] By using the above technical scheme, the part of the delivery pipeline exposed outside the mixing tank and the furnace is sleeved with a heat preservation sleeve, thereby effectively reducing the temperature loss of the molten material during delivery, improving the temperature stability of the aluminum alloy melt during transmission, and improving the uniformity of the alloy elements and the quality stability of the final product.

[0018] Optionally, an exhaust pipe and a pressure gauge are arranged on the top of the mixing tank; an exhaust valve is arranged on the exhaust pipe, and the exhaust valve is electrically connected to the pressure gauge.

[0019] By using the above technical scheme, the exhaust pipe arranged on the top of the mixing tank can timely exhaust the gas generated during the mixing of the melt, the pressure gauge monitors the pressure change in the tank, and the exhaust valve automatically adjusts the exhaust according to the signal of the pressure gauge, thereby maintaining the stability of the pressure in the mixing tank and improving the safety and stability of the mixing process of the melt.

[0020] Optionally, a sampling pipe is arranged on the side wall of the mixing tank close to the bottom and communicates with the inner cavity, and an electromagnetic valve is arranged on the sampling pipe.

[0021] By adopting the technical scheme, the sampling pipe arranged on the side wall of the mixing tank close to the bottom and the electromagnetic valve thereon facilitate sampling and testing of the melt at any time during production, so that the composition and quality of the melt meet the standard requirements, thereby improving the quality control precision of the final product.

[0022] To sum up, the present application has at least one of the following beneficial technical effects:

[0023] 1. The alloy raw materials and aluminum blocks in the two furnaces are melted to a flowable state and then added to the mixing tank in a precise proportion, and then the stirring motor is started to drive the stirring shaft to rotate, and the stirring blades are driven by the stirring shaft to form a strong turbulence field with high-speed rotation, rapidly stirring the molten materials in the mixing tank to form wave crests on the liquid surface, promoting frequent contact and friction between the two molten materials, greatly shortening the diffusion time, and thereby realizing uniform mixing on a macroscopic scale. At the same time, the heating assembly provides heat to compensate for the natural cooling rate inside the mixing tank, so that the overall environment is always in a relatively stable thermal equilibrium state, which is conducive to the recrystallization of particles on a microscopic level, generating finer and more uniform crystal organization morphology, effectively promoting the refinement of the primary phase of the aluminum alloy raw materials. The plurality of guide slopes on the top of the rotating disc make the rotating disc have a plurality of stepped structures with a height difference, so that the molten materials can be flipped up and down when the rotating disc rotates, making the mixing of the melt more uniform;

[0024] 2. The guide of the corrugated guide groove enables the rotating disc to ascend and descend during rotation in the mixing tank, improving the uniformity and stability of the stirring mechanism when mixing the aluminum alloy melt, which helps to improve the alloy composition distribution and improve the product quality;

[0025] 3. The mounting design of the fixing bolts enables the stirring blades to be firmly mounted on the mounting ring, and the number and position of the stirring blades can be adjusted according to actual needs. The stirring blades are arranged in close contact with the inner side wall of the mixing tank, which not only increases the contact area of the materials during stirring, but also effectively reduces the residue of the materials during stirring, thereby achieving more uniform mixing of the melt, thereby improving the mechanical properties and electrical and thermal conductivity properties of the final product. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application.

[0027] Figure 2 is a schematic diagram of the internal structure of the mixing tank in the embodiment of the present application.

[0028] BRIEF DESCRIPTION OF DRAWINGS:

[0029] 1, mixing tank; 11, guide groove; 12, sampling pipe; 121, electromagnetic valve; 13, exhaust pipe; 131, exhaust valve; 2, furnace; 3, controller; 4, conveying pipe; 41, heat preservation sleeve; 42, conveying pump; 43, flow meter; 5, stirring mechanism; 51, stirring shaft; 511, chute; 52, stirring blade; 53, rotating disc; 531, limiting column; 532, guide column; 54, stirring motor; 6, heating assembly; 61, heat insulation sleeve; 62, electric heating pipe; 63, temperature measuring element; 7, mounting ring; 71, fixing bolt; 8, air pressure gauge. DETAILED DESCRIPTION

[0030] The application will be further described below in conjunction with the accompanying drawings. Figures 1-2 The application will be further described below in conjunction with the accompanying drawings.

[0031] The application discloses an aluminum alloy melt efficient mixing device.

[0032] Referring to Figure 1 and Figure 2 , the aluminum alloy melt efficient mixing device comprises a mixing tank 1 and a furnace 2, a controller 3 is fixedly arranged on the outer wall of the mixing tank 1, and the two sides of the mixing tank 1 are respectively provided with one of the furnaces 2, one of the furnaces 2 is used for smelting pure aluminum blocks, and the other of the furnaces 2 is used for smelting iron, nickel or other alloy element raw materials, each of the furnaces 2 is fixedly and communicatively arranged with the mixing tank 1, a conveying pipe 4 is fixedly arranged outside the mixing tank 1 and the furnace 2, the conveying pipe 4 is fixedly sleeved with a heat preservation sleeve 41, the conveying pipe 4 is fixedly arranged with a conveying pump 42 and a flow meter 43 which are electrically connected to the controller 3, and the flow meter 43 is located on the side of the conveying pump 42 close to the furnace 2. A stirring mechanism 5 is arranged in the mixing tank 1, and a heating assembly 6 is arranged on the mixing tank 1.

[0033] Referring to Figure 1 and Figure 2 , the two sides of the furnaces 2 are used for smelting materials, so that the materials reach the ideal working temperature, then under the control of the controller 3, the materials are pumped into the mixing cavity of the mixing tank 1 through the conveying pipe 4 at a precise proportion, at this time, the stirring mechanism 5 is immediately activated to start operation, a strong turbulence field is formed by high-speed rotation, the liquid surface is rapidly stirred to form a wave crest, the two solutions are frequently contacted and rubbed, the diffusion time is greatly shortened, and uniform mixing on a macroscopic scale is realized. At the same time, the heating assembly 6 provides heat to compensate for the natural cooling rate inside the mixing tank, so that the overall environment is always in a relatively stable heat balance state, which is beneficial to the particle recrystallization activity on a microscale, generates finer and more uniform crystal organization forms, and effectively promotes the refinement of the primary phase of the aluminum alloy raw material.

[0034] Referring to Figure 2The stirring mechanism 5 comprises a stirring shaft 51, a plurality of stirring blades 52, a rotating disc 53 and a stirring motor 54. The stirring shaft 51 is coaxially arranged with the mixing tank 1. The stirring motor 54 is fixedly arranged at the bottom of the mixing tank 1. The output shaft of the stirring motor 54 is rotatably arranged through the bottom of the mixing tank 1 and is fixedly connected with the stirring shaft 51.

[0035] With reference to Figure 2 A plurality of mounting rings 7 are slidingly arranged on the stirring shaft 51. In this embodiment, four mounting rings 7 are taken as an example. A fixing bolt 71 is arranged through each mounting ring 7. The fixing bolt 71 is threadedly connected with the stirring shaft 51 after being arranged through the mounting ring 7. The length direction of the stirring blade 52 is perpendicular to the axis of the stirring shaft 51. A plurality of stirring blades 52 are fixedly arranged along the circumferential direction of the mounting ring 7. In this embodiment, two stirring blades 52 are symmetrically arranged along the axial center of the stirring shaft 51.

[0036] With reference to Figure 2 A plurality of groups of material guiding inclined surfaces are integrally formed on the top of the rotating disc 53 along the axial direction of the rotating disc 53. The rotating disc 53 is slidingly arranged on the stirring shaft 51 and is rotatably arranged between the inner side wall of the mixing tank 1. A sliding groove 511 is formed on the side wall of the stirring shaft 51 and is parallel to the axial direction of the stirring shaft 51. A limiting column 531 is fixedly arranged on the inner ring side wall of the rotating disc 53. The limiting column 531 is inserted into the sliding groove 511 and is slidingly arranged between the sliding groove 511. A corrugated guiding groove 11 is formed on the inner side wall of the mixing tank 1 along the axial direction of the mixing tank 1. The corrugated height of the guiding groove 11 is matched with the length of the sliding groove 511. A guiding column 532 is fixedly arranged on the outer ring side wall of the rotating disc 53. The guiding column 532 is inserted into the guiding groove 11 and is slidingly arranged between the guiding groove 11.

[0037] With reference to Figure 2 The heating assembly 6 comprises a heat insulation sleeve 61, an electric heating pipe 62 and a temperature measuring element 63. The heat insulation sleeve 61 is fixedly arranged on the outside of the mixing tank 1. The electric heating pipe 62 is fixedly arranged on the side wall of the heat insulation sleeve 61 close to the mixing tank 1 in a coil shape. The temperature measuring element 63 is fixedly arranged on the side wall of the heat insulation sleeve 61 close to the mixing tank 1 and is sleeved on the electric heating pipe 62. The temperature measuring element 63 and the electric heating pipe 62 are electrically connected with the controller 3.

[0038] With reference to Figure 1 In order to facilitate the extraction of the melt sample for inspection at any time during the production process, the side wall close to the bottom of the mixing tank 1 is fixedly provided with an extraction and inspection pipe 12 which is in communication with the inner cavity. An electromagnetic valve 121 is fixedly arranged on the extraction and inspection pipe 12.

[0039] With reference to Figure 1 In order to improve the safety of the use of the mixing tank 1, the top of the mixing tank 1 is fixedly provided with an exhaust pipe 13 and a barometer 8. An exhaust valve 131 is fixedly arranged on the exhaust pipe 13. The exhaust valve 131 is electrically connected with the barometer 8.

[0040] The implementation principle of the embodiment of the aluminum alloy melt efficient mixing device is as follows: after the materials on both sides of the smelting furnace 2 are smelted and reach the ideal working temperature, the controller 3 is controlled to pump the precise proportion of material flow into the mixing cavity of the mixing tank 1 through the conveying pipeline 4. At this time, the stirring motor 54 is started to drive the stirring shaft 51 to rotate, and the stirring blade 52 is driven by the stirring shaft 51 to rotate at high speed to form a strong disturbance field, rapidly stir the molten material in the mixing tank 1, make the liquid surface rise to form a wave crest, and promote the two molten materials to frequently contact and rub, greatly shorten the diffusion time, and then realize the uniform mixing on the macro scale. At the same time, the electric heating pipe 62 wrapped by the peripheral surrounding heat insulation sleeve 61 continuously emits heat radiation to provide heat to compensate for the internal natural cooling rate of the mixing tank, so that the overall environment is always in a relatively stable heat balance state, which is beneficial to the particle recrystallization activity on the micro level, generates finer and more uniform crystal organization form, and effectively promotes the refinement of the primary phase of the aluminum alloy raw material.

[0041] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. An efficient mixing device for aluminum alloy melt, characterized in that , comprising a mixing tank (1) and furnaces (2) arranged on both sides of the mixing tank (1), wherein one of the furnaces (2) is specifically used for smelting pure aluminum blocks, and the other furnace (2) is generally used for smelting iron or nickel, and each of the furnaces (2) is connected to the mixing tank (1) and is provided with a conveying pipe (4), and a stirring mechanism (5) is provided in the mixing tank (1), and the stirring mechanism (5) includes a stirring shaft (51) that is rotatably arranged inside the mixing tank (1), and a plurality of stirring shafts (51) distributed along the axial direction of the stirring shaft (51). A dry stirring blade (52), a rotating disk (53) sleeved on a stirring shaft (51), and a stirring motor (54) for driving the stirring shaft (51) to rotate, wherein the stirring shaft (51) is coaxially arranged with the mixing tank (1), the rotating disk (53) is located near the bottom of the mixing tank (1), and a plurality of material guiding inclined surfaces are arranged on the top of the rotating disk (53) around its own axial direction, the rotating disk (53) is rotatably engaged with the inner wall of the mixing tank (1), and a heating component (6) is provided on the mixing tank (1).

2. The high-efficiency mixing device for aluminum alloy melt according to claim 1, characterized in that The rotating disk (53) is slidably sleeved on the stirring shaft (51), and a sliding groove (511) is provided on the side wall of the stirring shaft (51) parallel to its own axis. A limiting column (531) is provided on the inner ring side wall of the rotating disk (53) facing the stirring shaft (51), and the limiting column (531) is inserted into the sliding groove (511) and slides with the sliding groove (511). A corrugated guide groove (11) is provided on the inner side wall of the mixing tank (1) around its own axis, and the corrugation height of the guide groove (11) matches the length of the sliding groove (511). A guide column (532) is provided on the outer ring side wall of the rotating disk (53), and the guide column (532) is inserted into the guide groove (11) and slides with the guide groove (11).

3. The high-efficiency mixing device for aluminum alloy melt according to claim 1, characterized in that The stirring shaft (51) is provided with a plurality of mounting rings (7) at equal intervals along its own axial direction. Each mounting ring (7) is slidably fitted with the stirring shaft (51). A fixing bolt (71) is passed through the mounting ring (7). The fixing bolt (71) is threadedly connected to the stirring shaft (51) after passing through the mounting ring (7). A plurality of stirring blades (52) are distributed circumferentially around the mounting ring (7), and the stirring blades (52) are fitted against the inner wall of the mixing tank (1).

4. The high-efficiency mixing device for aluminum alloy melt according to claim 1, characterized in that The heating assembly (6) comprises a heat-insulating sleeve (61) sleeved on the outside of the mixing tank (1), a coil-shaped electric heating tube (62) arranged on the side of the heat-insulating sleeve (61) close to the mixing tank (1), and a temperature measuring element (63) sleeved on the electric heating tube (62). A controller (3) is provided on the outer wall of the heat-insulating sleeve (61), and the temperature measuring element (63) and the electric heating tube (62) are both electrically connected to the controller (3).

5. The high-efficiency mixing device for aluminum alloy melt according to claim 4, characterized in that The delivery pipe (4) is provided with a delivery pump (42) for guiding the molten flow to the inner cavity of the mixing tank (1), and the delivery pipe (4) is also provided with a flow meter (43). The flow meter (43) is located on the side of the delivery pump (42) close to the furnace (2). The flow meter (43) and the delivery pump (42) are both electrically connected to the controller (3).

6. The high-efficiency mixing device for aluminum alloy melt according to claim 1, characterized in that The portion of the conveying pipe (4) exposed outside the mixing tank (1) and the furnace (2) is covered with a thermal insulation jacket (41).

7. The high-efficiency mixing device for aluminum alloy melt according to claim 1, characterized in that The top of the mixing tank (1) is provided with an exhaust pipe (13) and a barometer (8), the exhaust pipe (13) is provided with an exhaust valve (131), and the exhaust valve (131) is electrically connected to the barometer (8).

8. The high-efficiency mixing device for aluminum alloy melt according to claim 1, characterized in that A sampling tube (12) is provided on the side wall of the mixing tank (1) near the bottom and connected to the inner cavity, and a solenoid valve (121) is provided on the sampling tube (12).

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