Aluminum alloy refining device with three-rod design

Abstract

The utility model discloses a three-rod aluminum alloy refining device which comprises a stirring table arranged above a refining container, and a three-rod stirring mechanism used for stirring molten aluminum is arranged on the stirring table. The three-rod stirring mechanism comprises three rotating joints, three stirring rods, three blowing discs, three connecting shafts and a driving assembly used for driving the connecting shafts to rotate, the three stirring rods are rotationally arranged on the stirring table and define a regular triangle stirring structure, and the connecting shafts are of hollow structures; a rotating part of the rotating joint is mounted at the top of the connecting shaft, and a fixed part of the rotating joint is connected with an air supply pipeline. According to the utility model, three rods are adopted for simultaneous stirring, mixed flow can be formed in the stirring process, degassing and deslagging operations of molten aluminum are facilitated, and the three-rod stirring can also reduce the stirring workload of refining and the supply amount of nitrogen, so that the refining time is saved, and meanwhile, the sufficient refining of the molten aluminum can be realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of aluminum refining, in particular to an aluminum alloy refining device with a three-rod design. Background Art

[0002] During the refining process of aluminum alloy, the gas contained in the aluminum liquid needs to be discharged. Generally, an inert gas is introduced during the stirring process, and the large bubbles formed by the inert gas in the aluminum liquid are used to bring out the gas contained in the aluminum liquid, so that the gas in the aluminum liquid can be effectively discharged.

[0003] The single-rod stirring method currently commonly used on the market degasses and removes slag from the aluminum liquid by introducing nitrogen during the single-rod stirring process. Since the direction of the single-rod stirring is fixed, the stirring uniformity is poor. Secondly, due to the large size of the refining container, the single-rod stirring method takes a long time and it is difficult to completely remove the gas inside the aluminum liquid. There is still room for improvement. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the utility model aims to provide an aluminum alloy refining device with a three-rod design.

[0005] The technical solution adopted by the utility model is as follows: an aluminum alloy refining device with a three-rod design, including a stirring platform arranged above a refining container, wherein the stirring platform is provided with a three-rod stirring mechanism for stirring the aluminum liquid, the three-rod stirring mechanism including three rotary joints, stirring rods, a blowing disk, a connecting shaft and a driving assembly for driving the connecting shaft to rotate, the three stirring rods are rotated on the stirring platform and enclosed to form an equilateral triangle stirring structure, the connecting shaft is a hollow structure, the rotating part of the rotary joint is installed on the top of the connecting shaft, and the fixed part of the rotary joint is connected to the air supply pipe.

[0006] In a preferred embodiment, the stirring rod is coaxially mounted on the bottom of the connecting shaft and has a hollow cavity communicating therewith.

[0007] In a preferred embodiment, the stirring rod and the blowing plate extend into the aluminum liquid in the refining container, and a plurality of blowing holes communicating with the hollow cavity are arranged and distributed on the blowing plate.

[0008] In a preferred embodiment, the driving assembly includes a driving motor, a main pulley and a slave pulley, the slave pulley is fixed on the connecting shaft, the output end of the driving motor is connected to the main pulley, the main pulley is connected to one of the slave pulleys through a transmission belt, and the two slave pulleys are also connected through a transmission belt.

[0009] In a preferred embodiment, a horizontal plate is horizontally mounted on the mixing platform, a through hole is opened on the horizontal plate to allow the connecting shaft to pass through, and the driving motor is vertically mounted on the horizontal plate.

[0010] In a preferred embodiment, the gas supply pipeline is connected to an external inert gas supply system.

[0011] In a preferred embodiment, a bearing is further provided on the stirring platform corresponding to the stirring rod, and a rotating portion of the bearing is sleeved on the stirring rod.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are as follows: the three rods are used for simultaneous stirring as a whole, and a mixed flow can be formed during the stirring process, which is beneficial to the degassing and slag removal operations of the aluminum liquid. Secondly, the three-rod stirring can also increase the stirring workload of refining and the supply of nitrogen, while saving refining time and achieving sufficient aluminum liquid refining. At the same time, the whole is driven by a single motor, and the three rods can be driven to rotate at the same time by the single motor, which can save the overall manufacturing cost and subsequent maintenance cost, and has advantages that the current equipment does not have. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a simplified structural diagram of the utility model as a whole;

[0014] Figure 2 It is a schematic diagram of the partial cross-sectional planar structure of the stirring rod in the present invention.

[0015] Markings in the figure: 1-stirring rod, 101-hollow cavity, 2-blowing plate, 3-stirring table, 4-connecting shaft, 5-main pulley, 6-slave pulley, 7-drive motor, 8-air supply pipe, 9-drive belt, 10-rotary joint, 11-cross plate, 12-bearing. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0017] A three-rod aluminum alloy refining device, referring to Figure 1-2, including a stirring table 3 arranged above the refining container (not shown in the figure), the stirring table 3 is provided with a three-rod stirring mechanism for stirring the aluminum liquid, the three-rod stirring mechanism includes three rotary joints 10, stirring rods 1, blowing disk 2, connecting shaft 4 and a driving assembly for driving the connecting shaft 4 to rotate, the three stirring rods 1 are rotated on the stirring table 3 and enclosed into a regular triangle stirring structure, and the whole adopts three-rod simultaneous stirring. During the stirring process, a mixed flow can be formed by the cooperation of the three stirring rods 1 and the blowing disk 2, which is beneficial to the degassing and slag removal operations of the aluminum liquid. Secondly, the three-rod stirring can also increase the stirring workload of refining and the supply of nitrogen, saving refining time while achieving sufficient aluminum liquid refining.

[0018] Furthermore, the connecting shaft 4 is a hollow structure, the rotating part of the rotary joint 10 is installed on the top of the connecting shaft 4, the fixed part of the rotary joint 10 is connected to the air supply pipe 8, and a rotary joint 10 is designed between the air supply pipe 8 and the connecting shaft 4. During the rotation of the connecting shaft 4, it will not interfere with the air supply operation of the air supply pipe 8.

[0019] The fixing portion of the rotary joint 10 may also be additionally fixed on the transverse plate 11 , which will not be further elaborated herein.

[0020] Furthermore, the gas supply pipe 8 is connected to an external inert gas supply system (not shown in the figure), and the inert gas is preferably nitrogen, wherein the inert gas supply system includes a nitrogen tank, an air pump, a valve, a solenoid valve, a flow meter, etc. Since the gas supply is currently an existing technology, it will not be described in detail here.

[0021] Furthermore, the stirring rod 1 is coaxially installed at the bottom of the connecting shaft 4 and has a hollow cavity 101 connected thereto. The stirring rod 1 and the blowing plate 2 extend into the aluminum liquid in the refining container. A plurality of blowing holes (not shown in the figure) connected to the hollow cavity 101 are arranged and distributed on the blowing plate 2. The inert gas will be discharged into the hollow cavity 101 through the connecting shaft 4 and then discharged into the blowing plate 2 through the hollow cavity 101 and blown out. The blown gas is used to degas the aluminum liquid.

[0022] Furthermore, the driving assembly includes a driving motor 7, a main pulley 5 and a slave pulley 6. The slave pulley 6 is fixed on the connecting shaft 4. The output end of the driving motor 7 is connected to the main pulley 5. The main pulley 5 is connected to one of the slave pulleys 6 through a transmission belt 9. The slave pulleys 6 are also connected to each other through a transmission belt 9. The driving motor 7 drives the main pulley 5 to rotate, and then drives multiple slave pulleys 6 to rotate through the transmission belt 9, thereby realizing the rotation of the three-rod stirring part. The three rods are driven to rotate at the same time by a single driving motor 7, which can save the overall manufacturing cost and subsequent maintenance cost.

[0023] Of course, the drive assembly may also adopt a gear transmission part, and each connecting shaft 4 may also be driven by a drive motor 7 separately. The specific structure will not be elaborated here.

[0024] Furthermore, a horizontal plate 11 is horizontally mounted on the mixing table 3, and a through hole is opened on the horizontal plate 11 to allow the connecting shaft 4 to pass through. The drive motor 7 is vertically installed on the horizontal plate 11. A bearing 12 is also provided on the mixing table 3 corresponding to the stirring rod 1. The rotating part of the bearing 12 is fixed on the stirring rod 1. The bearing 12 can serve as an auxiliary guide for the rotation of the stirring rod 1, thereby ensuring the stability of the rotation of the stirring rod 1.

[0025] In summary, the overall use of three-rod simultaneous stirring can form a mixed flow during the stirring process, which is beneficial to the degassing and slag removal of the aluminum liquid. Secondly, the three-rod stirring can also increase the stirring workload of refining and the supply of nitrogen, saving refining time while achieving sufficient aluminum liquid refining, which is worthy of promotion.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A three-rod aluminum alloy refining device, characterized in that: It includes a stirring table arranged above the refining container, and a three-rod stirring mechanism for stirring the aluminum liquid is provided on the stirring table. The three-rod stirring mechanism includes three rotary joints, stirring rods, blowing plates, connecting shafts and a driving assembly for driving the connecting shafts to rotate. The three stirring rods are rotated on the stirring table and enclosed to form an equilateral triangle stirring structure. The connecting shaft is a hollow structure. The rotating part of the rotary joint is installed on the top of the connecting shaft. The fixed part of the rotary joint is connected to the air supply pipe.

2. The three-bar aluminum alloy refining device according to claim 1, characterized in that: The stirring rod is coaxially mounted on the bottom of the connecting shaft and has a hollow cavity communicated with the connecting shaft.

3. The three-bar aluminum alloy refining device according to claim 2, characterized in that: The stirring rod and the blowing plate extend into the aluminum liquid in the refining container, and a plurality of blowing holes connected with the hollow cavity are arranged and distributed on the blowing plate.

4. The three-bar aluminum alloy refining device according to claim 1, characterized in that: The driving assembly includes a driving motor, a main pulley and a slave pulley, the slave pulley is fixed on the connecting shaft, the output end of the driving motor is connected to the main pulley, the main pulley is connected to one of the slave pulleys through a transmission belt, and the two slave pulleys are also connected through a transmission belt.

5. The three-rod aluminum alloy refining device according to claim 4, characterized in that: A horizontal plate is horizontally arranged on the mixing platform, a through hole is opened on the horizontal plate to allow the connecting shaft to pass through, and the driving motor is vertically installed on the horizontal plate.

6. The three-bar aluminum alloy refining device according to claim 1, characterized in that: The gas supply pipeline is connected to an external inert gas supply system.

7. The three-rod aluminum alloy refining device according to claim 1, characterized in that: The stirring platform is further provided with a bearing corresponding to the stirring rod, and the rotating portion of the bearing is sleeved on the stirring rod.

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