Full-automatic molten aluminum online degassing and filtering device

Abstract

The utility model relates to the technical field of degassing and filtering devices, and particularly discloses a full-automatic molten aluminum online degassing and filtering device which comprises a first treatment box, a second treatment box and a third treatment box, the top of the first treatment box is fixedly connected with a feed pipe and an exhaust pipe, the bottom of the third treatment box is fixedly connected with a discharge pipe, and the discharge pipe is fixedly connected with an exhaust pipe. A conveying pipe is arranged between the first treatment box and the second treatment box, the first treatment box and the second treatment box are mutually fixed through the conveying pipe, the third treatment box is fixedly connected with the second treatment box, a fixing rod is fixedly connected in the first treatment box, a spiral blade is fixedly connected outside the fixing rod, an ultrasonic degassing assembly is arranged in the second treatment box, and the first treatment box and the second treatment box are fixedly connected through the spiral blade. And a magnetic filtering assembly is arranged in the third treatment box. According to the utility model, degassing and filtering can be synchronously carried out.

Description

Technical Field

[0001] This utility model relates to the technical field of degassing and filtration devices, and in particular to a fully automatic online degassing and filtration device for molten aluminum. Background Technology

[0002] In modern aluminum processing, gaseous impurities (mainly hydrogen) and solid inclusions in molten aluminum severely affect product quality. Hydrogen precipitates during the solidification process, forming pores that lead to defects such as shrinkage cavities and cracks in castings. Inclusions weaken the mechanical properties of aluminum products, reducing their fatigue resistance and corrosion resistance. Especially in high-end applications such as aerospace and automotive manufacturing, the purity and performance stability of aluminum products are extremely critical. Therefore, highly efficient online degassing and filtration devices for molten aluminum have become key equipment for ensuring product quality. These devices can remove impurities in real time during continuous aluminum production, significantly improving production efficiency and reducing energy consumption and costs compared to offline processing methods.

[0003] However, most existing online degassing and filtration devices for molten aluminum use a single processing unit, making it difficult to achieve efficient synergy between degassing and filtration functions. Utility Model Content

[0004] To address the technical problem that most existing online degassing and filtration devices for molten aluminum use a single processing unit, making it difficult to achieve efficient synergy between degassing and filtration functions, this utility model provides a fully automatic online degassing and filtration device for molten aluminum.

[0005] The technical solution adopted by this utility model is: a fully automatic online degassing and filtration device for molten aluminum, including a first processing box, a second processing box, and a third processing box. The top of the first processing box is fixedly connected to an inlet pipe and an exhaust pipe, and the bottom of the third processing box is fixedly connected to an outlet pipe. A conveying pipe is provided between the first processing box and the second processing box, and they are fixed to each other through the conveying pipe. The third processing box is fixedly connected to the second processing box. A fixing rod is fixedly connected inside the first processing box, and a spiral blade is fixedly connected to the outside of the fixing rod. An ultrasonic degassing component is provided inside the second processing box, and a magnetic filtration component is provided inside the third processing box.

[0006] A further feature of this invention is that the ultrasonic degassing assembly comprises multiple sets of ultrasonic transmitters fixedly connected to the outside of the second processing box, and multiple sets of vibrating rods fixedly connected inside the second processing box, with one end of each vibrating rod connected to an ultrasonic transmitter.

[0007] A further feature of this invention is that the vibrating rod is made of titanium alloy.

[0008] A further feature of this invention is that the third processing box has multiple sets of through holes on its exterior, a fixing seat is provided outside the through holes, multiple sets of bolts are provided in the fixing seat, the fixing seat is fixedly connected to the third processing box by the bolts, and a magnetic rod is fixedly connected in the fixing seat, with one end of the magnetic rod extending into the third processing box.

[0009] A further feature of this invention is that the surface of the magnetic rod is coated with a magnetic material coating that is resistant to high temperatures and corrosion.

[0010] A further feature of this invention is that an electric valve is fixedly connected to the exhaust pipe.

[0011] A further feature of this invention is that the first processing box, the second processing box, and the third processing box are all cylindrical structures.

[0012] The beneficial effects of this utility model are as follows: In this utility model, the first processing box serves as a pretreatment unit. Its cylindrical structure combined with the spiral blade design allows the aluminum liquid to form a stable spiral flow field after entering. The spiral angle is optimized by fluid mechanics, which can make the aluminum liquid flow velocity uniformly distributed. The centrifugal force field formed can quickly separate bubbles to the upper layer of the liquid surface. The ultrasonic degassing component can remove gas from the aluminum liquid, while the magnetic filter component can remove impurities from the aluminum liquid, thus achieving simultaneous degassing and filtration. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the first processing box, the second processing box, and the third processing box in this utility model;

[0015] Figure 3 This is a cross-sectional structural schematic diagram of the present invention;

[0016] Figure 4 This is a schematic diagram of the structure of the magnetic rod in this utility model.

[0017] The diagram is marked as follows:

[0018] 1. First processing box; 2. Feed pipe; 3. Exhaust pipe; 4. Second processing box; 5. Conveying pipe; 6. Third processing box; 7. Fixing rod; 8. Spiral blade; 9. Ultrasonic transmitter; 10. Vibrating rod; 11. Discharge pipe; 12. Fixing base; 13. Bolt; 14. Magnetic rod; 15. Through hole. Detailed Implementation

[0019] In the description of this utility model, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] The following is in conjunction with the appendix Figure 1-4 The present invention will be further described below.

[0021] To address the problems existing in the background technology, this application proposes the following technical solution: a fully automatic online degassing and filtration device for molten aluminum, comprising a first processing tank 1, a second processing tank 4, and a third processing tank 6. The first processing tank 1, the second processing tank 4, and the third processing tank 6 are all cylindrical structures. The top of the first processing tank 1 is fixedly connected to a feed pipe 2 and an exhaust pipe 3, and an electric valve is fixedly connected to the exhaust pipe 3. The bottom of the third processing tank 6 is fixedly connected to a discharge pipe 11. A conveying pipe 5 is provided between the first processing tank 1 and the second processing tank 4, and they are fixed to each other through the conveying pipe 5. The third processing tank 6 is fixedly connected to the second processing tank 4. A fixing rod 7 is fixedly connected inside the first processing tank 1, and a spiral blade 8 is fixedly connected to the outside of the fixing rod 7. An ultrasonic degassing component is provided inside the second processing tank 4, and a magnetic filtration component is provided inside the third processing tank 6. The first processing tank 1 serves as a pretreatment unit, and its cylindrical structure, combined with the spiral blade 8 design, allows the molten aluminum to form a stable spiral flow field after entering. The spiral blade 8 is made of high-temperature resistant alloy steel, and its surface is nitrided to form a dense and wear-resistant layer. It can maintain its shape stability even at a high temperature of 800℃. Its spiral angle is optimized by fluid dynamics, which can make the aluminum liquid flow velocity uniformly distributed. The centrifugal force field formed can quickly separate bubbles with a diameter greater than 0.5mm to the upper layer of the liquid surface.

[0022] The second processing box 4 serves as the core degassing unit. Its cylindrical structure design facilitates the uniform propagation of ultrasonic energy, creating an ideal environment for subsequent deep degassing. The third processing box 6 is a fine filtration unit. The three processing boxes are seamlessly connected by the conveying pipe 5, forming a continuous processing flow. Compared with the traditional method of multiple devices connected in series, this reduces heat loss and the risk of secondary contamination during the aluminum liquid transportation process, making the entire processing process more compact and efficient.

[0023] In this embodiment, the ultrasonic degassing assembly consists of multiple sets of ultrasonic transmitters 9 fixedly connected to the outside of the second processing box 4. Multiple sets of vibrating rods 10 are fixedly connected inside the second processing box 4, with one end of each vibrating rod 10 connected to an ultrasonic transmitter 9. The vibrating rods 10 are made of titanium alloy. The multiple sets of ultrasonic transmitters 9 are evenly distributed outside the second processing box 4, employing a modular design. Each transmitter has a power of 2-3kW, and the number of modules can be flexibly increased or decreased according to the amount of aluminum liquid processed. Each transmitter is equipped with an independent frequency adjustment system, with a working frequency range of 20-40kHz. This system can be adjusted in real-time by a PLC intelligent control system based on parameters such as aluminum liquid temperature and viscosity, ensuring optimal degassing performance under different operating conditions. The vibrating rods 10 are made of TC4 titanium alloy, possessing excellent high-temperature resistance (melting point 1668℃) and corrosion resistance. Their surface is mirror-polished with a roughness Ra≤0.2μm, effectively reducing aluminum liquid adhesion and extending service life.

[0024] When ultrasound waves are transmitted into the molten aluminum through the vibrating rod 10, a "cavitation effect" is generated. This effect involves the formation of tiny bubbles in the liquid that rapidly collapse, creating an instantaneous high-temperature and high-pressure environment. This effect allows hydrogen molecules in the molten aluminum to quickly diffuse into the cavitation bubbles and rise with them. The special arrangement of the vibrating rod 10 creates a three-dimensional ultrasonic field within the chamber, ensuring that every area in the molten aluminum is affected by ultrasound. Furthermore, the vibration of the ultrasound waves can break up the oxide film in the molten aluminum, releasing trapped gases and further enhancing the degassing effect.

[0025] In this embodiment, the exterior of the third processing box 6 is provided with multiple sets of through holes 15, and a fixing seat 12 is provided on the exterior of the through holes 15. Multiple sets of bolts 13 are provided in the fixing seat 12, and the fixing seat 12 is fixedly connected to the third processing box 6 through the bolts 13. A magnetic rod 14 is fixedly connected in the fixing seat 12, with one end of the magnetic rod 14 extending into the third processing box 6. The surface of the magnetic rod 14 is coated with a high-temperature resistant and corrosion-resistant magnetic material coating. The multiple sets of through holes 15 are evenly distributed around the circumference of the third processing box 6, and each through hole 15 corresponds to a set of independently detachable magnetic rods 14. This modular design makes equipment maintenance more convenient. The magnetic rod 14 uses neodymium iron boron strong magnetic material as its core and is coated with a 50μm thick ceramic matrix composite coating. This coating is made of Al2O3-ZrO2 composite material, with a hardness of up to 1500HV. At high temperatures, it can form a dense oxide layer, effectively resisting aluminum liquid corrosion and extending the service life of the magnetic rod 14 to more than 1000 hours.

[0026] When molten aluminum flows over the surface of the magnetic rod 14, ferromagnetic impurities (such as Fe, Mn, Cr, and other metal particles) are adsorbed by the strong magnetic field. The adsorption efficiency is closely related to the magnetic field strength, contact area, and flow rate of the molten aluminum. In this application, the magnetic field strength of the magnetic rod 14 can reach 1.2T. When cleaning is required, simply loosen the bolts 13 of the fixing seat 12 to quickly remove the magnetic rod 14 for cleaning. The entire process does not affect the continuous operation of the equipment. The cleaned magnetic rod 14 can be reused, reducing operating costs.

[0027] The usage method of this embodiment is as follows:

[0028] The molten aluminum is transported to the first processing tank 1 through the feed pipe 2. The spiral blade 8 guides the molten aluminum to form a spiral flow, initially separating the gas, which is then discharged through the exhaust pipe 3.

[0029] The molten aluminum then enters the second processing tank 4 through the conveying pipe 5. Each ultrasonic generator is equipped with an independent power adjustment module, which can adjust the output power according to parameters such as the flow rate and temperature of the molten aluminum through an intelligent control system. One end of the vibrating rod 10 is connected to the ultrasonic generator, and the other end extends into the molten aluminum, efficiently transmitting ultrasonic energy into the interior of the molten aluminum. Under the action of ultrasound, the bubbles in the molten aluminum vibrate, gather, and float to the surface for discharge, achieving efficient degassing.

[0030] Next, the molten aluminum enters the third processing tank 6. The magnetic rod is designed to adsorb impurities in the molten aluminum. When the amount of impurities adsorbed by the magnetic rod reaches a certain level, the magnetic rod can be pulled out and replaced. The pulled-out magnetic rod can be cleaned and reused. Finally, the molten aluminum is discharged through the discharge pipe 11 at the bottom of the third processing tank 6.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] Although embodiments of the present invention have been shown and described, the scope of the present invention will be defined by the appended claims and their equivalents for those skilled in the art.

Claims

1. A fully automatic online degassing and filtration device for molten aluminum, characterized in that, The system includes a first processing box (1), a second processing box, and a third processing box (6). The top of the first processing box (1) is fixedly connected to a feed pipe (2) and an exhaust pipe (3). The bottom of the third processing box (6) is fixedly connected to a discharge pipe (11). A conveying pipe (5) is provided between the first processing box (1) and the second processing box (4), and they are fixed to each other through the conveying pipe (5). The third processing box (6) is fixedly connected to the second processing box (4). A fixing rod (7) is fixedly connected inside the first processing box (1), and a spiral blade (8) is fixedly connected to the outside of the fixing rod (7). An ultrasonic degassing component is provided inside the second processing box (4), and a magnetic filter component is provided inside the third processing box (6).

2. The fully automatic online degassing and filtration device for molten aluminum according to claim 1, characterized in that, The ultrasonic degassing assembly consists of multiple sets of ultrasonic transmitters (9) fixedly connected to the outside of the second processing box (4). Multiple sets of vibrating rods (10) are fixedly connected inside the second processing box (4), and one end of each vibrating rod (10) is connected to an ultrasonic transmitter (9).

3. The fully automatic online degassing and filtration device for molten aluminum according to claim 2, characterized in that, The vibrating rod (10) is made of titanium alloy.

4. The fully automatic online degassing and filtration device for molten aluminum according to claim 1, characterized in that, The third processing box (6) has multiple sets of through holes (15) on its exterior. A fixing seat (12) is provided on the exterior of each through hole (15). Multiple sets of bolts (13) are provided in the fixing seat (12). The fixing seat (12) is fixedly connected to the third processing box (6) by the bolts (13). A magnetic rod (14) is fixedly connected in the fixing seat (12). One end of the magnetic rod (14) extends into the third processing box (6).

5. The fully automatic online degassing and filtration device for molten aluminum according to claim 4, characterized in that, The surface of the magnetic rod (14) is coated with a magnetic material coating that is resistant to high temperature and corrosion.

6. The fully automatic online degassing and filtration device for molten aluminum according to claim 1, characterized in that, An electric valve is fixedly connected to the exhaust pipe (3).

7. The fully automatic online degassing and filtration device for molten aluminum according to claim 1, characterized in that, The first processing box (1), the second processing box (4) and the third processing box (6) are all cylindrical structures.

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