Molten aluminum deslagging mechanism for aluminum bar production
By designing an aluminum slag discharge mechanism and utilizing a combination of filter pipes and cleaning components, the problem of filter plate clogging in vacuum filtration was solved, achieving efficient filtration and purity improvement of aluminum slag, and ensuring the quality of aluminum rods.
Patent Information
- Application Number
- CN202410791236.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-19
- Publication Date
- 2025-10-31
AI Technical Summary
In the existing aluminum rod production process, vacuum filtration is prone to clogging of the filter plates, which affects the continuous filtration process and makes it difficult to effectively remove fine impurities.
An aluminum slag discharge mechanism was designed, including a filter tube, a first filter element, a cleaning element, a heating element, and a second filter element. The first filter element intercepts impurities, the cleaning element scrapes off the attached impurities, the waste storage tube collects the impurities, and the heating element keeps the aluminum slag in a liquid state. The second filter element further filters the impurities.
This method achieves efficient filtration of molten aluminum, avoids filter plate clogging, ensures continuous filtration, and improves the purity of molten aluminum and the processing quality of aluminum rods.
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Figure CN120860690A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of aluminum rod processing, and more particularly to an aluminum molten metal slag removal mechanism for aluminum rod production. Background Technology
[0002] Aluminum bars are long, rectangular solids made of aluminum, typically with a round or square cross-section. They are widely used in various manufacturing and engineering fields because aluminum has a low density, good electrical conductivity, and machinability. Aluminum bars can be made into different sizes and shapes through processes such as extrusion, forging, or drawing. Depending on the requirements, aluminum bars can be made of pure aluminum or aluminum alloys containing certain alloying components, which can provide higher strength, corrosion resistance, or other specific properties. Aluminum bars are commonly used to manufacture parts, structural components, frames, mechanical parts, etc.
[0003] The processing of aluminum rods begins with mixing and melting aluminum with other alloying elements to form molten aluminum, which is then shaped using molds. To further improve the purity and quality of the aluminum rods, the molten aluminum typically needs to be filtered before qualitative analysis to remove unmelted metal materials or impurities. Various filtration methods exist, including vacuum filtration. Vacuum filtration involves passing the molten aluminum through porous ceramic or metal filter plates under negative pressure, leaving impurities on the plates, thus achieving filtration and slag removal.
[0004] However, the following defects and shortcomings still exist in the application implementation process:
[0005] This method is also designed for fine impurities, so the filter pores are relatively small, which makes the filter plate structure prone to clogging and prevents the filtration process from continuing.
[0006] Therefore, it is necessary to provide a new aluminum molten metal slag removal mechanism for aluminum rod production to solve the above-mentioned technical problems. Summary of the Invention
[0007] To solve the above-mentioned technical problems, the present invention provides an aluminum molten metal slag discharge mechanism for aluminum rod production.
[0008] The aluminum molten metal slag removal mechanism for aluminum rod production provided by this invention includes:
[0009] A filter tube, wherein one end of the filter tube has an inlet pipe and the other end is closed, an outlet pipe is provided on the outer circumference near the closed end, a waste discharge pipe is provided near the inlet pipe, and a waste storage pipe is fixed at the other end of the waste discharge pipe;
[0010] The first filter element is installed inside the filter tube near the waste discharge pipe. The first filter element is used to intercept impurities in the molten aluminum flowing through the filter tube.
[0011] The cleaning component is installed at the closed end of the filter tube and extends axially into the inside of the filter tube, and contacts the first filter element to scrape off the impurities attached to the first filter element.
[0012] The heating element is installed on the outside of the waste storage pipe to heat the small amount of molten aluminum concentrated inside the waste storage pipe, so that the molten aluminum remains in a liquid state.
[0013] The second filter element is connected to the waste storage pipe and is used to filter out the small amount of molten aluminum concentrated in the waste storage pipe.
[0014] Preferably, a first valve is installed at the other end of the liquid outlet pipe, and a second valve is installed at the other end of the waste storage pipe;
[0015] A water inlet pipe is also installed on the outer circumference of the filter tube near the closed end, and a third valve pipe is installed at the other end of the water inlet pipe.
[0016] Preferably, the first filter element includes a first mounting cylinder disposed inside the filter tube, a mounting ring fixed to the inner circumference of the filter tube on one side of the first mounting cylinder, the diameter of the mounting ring being larger than the diameter of the first mounting cylinder, and an annular mesh plate disposed between one end of the first mounting cylinder and the mounting ring, and a filter screen fixed to the other end of the first mounting cylinder.
[0017] Preferably, the filter screen is hemispherical with its convex surface facing the air inlet pipe, and the filter screen is located at the connection between the exhaust pipe and the filter pipe.
[0018] Preferably, the cleaning component includes a motor installed at the closed end of the filter tube, the output end of the motor extending axially into the interior of the filter tube and axially connected to a drive shaft, the other end of the drive shaft passing through the filter screen and rotatably connected thereto, and a mounting base fixed thereto. Several annularly distributed arc-shaped plates are fixed on the outer side of the mounting base, and annular steel wires are also provided on the arc-shaped plates, which scrape off impurities attached to the filter screen. A reinforcing ring rotatably connected to the outside of the first mounting cylinder is also fixed at the other end of the arc-shaped plates.
[0019] Preferably, two positioning ring plates are welded to the outer circumference of the waste storage pipe.
[0020] Preferably, the heating element includes a second mounting cylinder bolted between two positioning ring plates, forming a sealed space between the second mounting cylinder and the waste storage pipe, and a connector and a corrugated heating wire are disposed inside the space. The connector is also provided with a conductive structure, which is a wire and a plug.
[0021] Preferably, fins are provided between the heating wire and the waste storage tube. The fins are made of copper and are used to conduct heat to the inside of the waste storage tube. The inner wall of the second mounting cylinder also has a heat insulation layer.
[0022] Preferably, the second filter element includes an installation tube, one end of which is mounted to the other end of the second valve tube via a rotating structure, and several ring-shaped handles are fixed to the outer circumference of the installation tube.
[0023] The installation tube is also fitted with a fixing ring, and several ring-shaped connecting plates are vertically fixed on one side of the fixing ring. Several vertically distributed mesh cages are fixed on the connecting plates, and each mesh cage is filled with filter media.
[0024] Preferably, the filter medium is quartz sand or activated carbon.
[0025] Compared with related technologies, the aluminum molten metal slag discharge mechanism for aluminum rod production provided by the present invention has the following beneficial effects:
[0026] The first filter element can intercept various impurities in the molten aluminum, thus achieving aluminum filtration. At the same time, the cleaning element can scrape off the impurities intercepted by the first filter element and guide them into the waste storage pipe. The waste storage pipe concentrates the impurities, thereby ensuring the continuous operation of the filtration process and improving the efficiency of molten aluminum filtration. Attached Figure Description
[0027] Figure 1 A schematic diagram of a preferred embodiment of the aluminum molten metal slag discharge mechanism for aluminum rod production provided by the present invention;
[0028] Figure 2 This is a cross-sectional structural schematic diagram of the filter tube shown in this invention;
[0029] Figure 3 This is a schematic diagram of the structure of the filter element shown in this invention;
[0030] Figure 4 This is a partial structural schematic diagram of the cleaning component shown in this invention;
[0031] Figure 5 As shown in this invention Figure 4 Enlarged structural diagram at point A;
[0032] Figure 6 This is a schematic diagram of the waste storage pipe shown in the present invention;
[0033] Figure 7 This is a schematic diagram of the structure of the second filter element shown in this invention;
[0034] Figure 8 This is a schematic diagram of the heating element shown in the present invention.
[0035] The diagram is labeled as follows: 1. Filter tube; 2. Inlet pipe; 3. Outlet pipe; 4. First valve tube; 5. Waste discharge pipe; 6. Waste storage pipe; 7. Second valve tube; 8. Second filter element; 81. Mounting tube; 82. Handle; 83. Fixing ring; 84. Connecting plate; 85. Wire mesh cage; 9. Water inlet pipe; 10. Third valve tube; 11. First filter element; 111. First mounting cylinder; 112. Mounting ring; 113. Mesh plate; 114. Filter screen; 12. Cleaning component; 121. Motor; 122. Drive shaft; 123. Mounting base; 124. Arc plate; 125. Steel wire; 126. Reinforcing ring; 13. Positioning ring plate; 14. Heating element; 141. Second mounting cylinder; 142. Connector; 143. Heating wire; 144. Conductive structure. Detailed Implementation
[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.
[0037] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.
[0038] Please see Figures 1 to 6 The present invention provides an aluminum molten metal slag discharge mechanism for aluminum rod production. The aluminum molten metal slag discharge mechanism for aluminum rod production includes a filter tube 1. One end of the filter tube 1 has a liquid inlet pipe 2 that is connected to the liquid inlet pipe 2 to introduce aluminum molten metal, while the other end is closed. A liquid outlet pipe 3 is provided on the outer circumference of the filter tube 1 near the closed end, and a waste discharge pipe 5 is provided near the liquid inlet pipe 2. A waste storage pipe 6 is fixed at the other end of the waste discharge pipe 5. A first filter element 11 and a cleaning element 12 for cleaning the first filter element 11 are also provided on the filter tube 1.
[0039] The other end of the liquid outlet pipe 3 is equipped with a first valve pipe 4, and the other end of the waste storage pipe 6 is equipped with a second valve pipe 7.
[0040] A water inlet pipe 9 is installed on the outer circumference of the filter pipe 1 near the closed end, and a third valve pipe 10 is installed on the other end of the water inlet pipe 9.
[0041] It should be noted that when the device filters molten aluminum, the molten aluminum is introduced into the filter tube 1 through the inlet pipe 2. The molten aluminum passes through the first filter element 11 and is finally discharged from the outlet pipe 3. In this process, the first filter element 11 can intercept impurities (including solid impurities, inclusions and bubbles) in the molten aluminum, thereby filtering the molten aluminum, improving the purity of the molten aluminum, and improving the processing quality of the aluminum rods.
[0042] To prevent the first filter element 11 from becoming clogged during normal use, a cleaning element 12 is also provided on the filter tube 1. During operation, the cleaning element 12 can scrape off the impurities intercepted by the first filter element 11, thereby cleaning the first filter element 11 and maintaining the continuous operation of the filtration process. The cleaned impurities will be discharged from the waste discharge pipe 5 and concentrated inside the waste storage pipe 6, which will make subsequent cleaning easier.
[0043] Clean water can be injected into the filter tube 1 through the water inlet pipe 9. This is a cleaning process for impurities in the filter tube 1, the first filter element 11 and the waste storage pipe 6. During the process, the water flows in the opposite direction through the first filter element 11 to achieve backwashing of the first filter element 11. The water flows out from the waste discharge pipe 5, which can further clean the waste storage pipe 6.
[0044] It is important to note that during the filtration of molten aluminum, the second valve 7 at the lower end of the waste storage pipe 6 and the third valve 10 on the inlet pipe 9 are both closed, while the first valve 4 on the outlet pipe 3 is open. Therefore, the molten aluminum flows through the inlet pipe 2 into the filter pipe 1 and then into the outlet pipe 3. However, during backwashing of the entire filtration system, the inlet pipe 2 must be blocked, and the first valve 4 on the outlet pipe 3 can be either closed or open (the degree of opening of the first valve 4 should be carefully monitored to ensure that more clean water enters the waste storage pipe). Inside pipe 6, the second valve pipe 7 and the third valve pipe 10 are both open. Clean water is introduced into the inlet pipe 9 by a water pump and other equipment. After the clean water enters the filter pipe 1, it mainly flows towards the position of the first filter element 11, thus passing through the first filter element 11 and rinsing the first filter element 11. The rinsing process is carried out in conjunction with the cleaning element 12 to improve the cleaning effect. Afterwards, it enters the waste discharge pipe 5 with impurities and is finally discharged. A small amount of clean water is discharged from the liquid outlet pipe 3, which can rinse the liquid outlet pipe 3.
[0045] The various structures inside the filter tube 1 need to be coated to prevent molten aluminum from sticking to the various structures (this technology is existing technology and will not be described in detail again).
[0046] In an embodiment of the present invention, please refer to Figure 2 and Figure 3 The first filter element 11 includes a first mounting cylinder 111 disposed inside the filter tube 1. A mounting ring 112 fixed to the inner circumference of the filter tube 1 is disposed on one side of the first mounting cylinder 111. The diameter of the mounting ring 112 is larger than the diameter of the first mounting cylinder 111. An annular mesh plate 113 is also disposed between one end of the first mounting cylinder 111 and the mounting ring 112. A filter screen 114 is fixed to the other end of the first mounting cylinder 111. The filter screen 114 is hemispherical and the outer convex surface faces the position of the liquid inlet pipe 2. The filter screen 114 is located at the connection between the waste discharge pipe 5 and the filter tube 1.
[0047] It should be noted that the first filter element 11 has a filter screen 114 as its main structure. The filter screen 114 can be made of heat-resistant steel or ceramic material. This type of material has the function of high temperature resistance, which meets the filtration requirements of molten aluminum. At the same time, the filter screen 114 has a three-dimensional structure, which can provide a larger surface area and a more complex flow path compared with traditional filter plates. Therefore, it may have higher filtration efficiency and better impurity capture ability, and it is also easier to clean.
[0048] There is a gap between the filter screen 114 and the filter tube 1, which is used by the cleaning component 12, providing the cleaning component 12 with a larger space, so it is more convenient to clean the filter screen 114.
[0049] In an embodiment of the present invention, please refer to Figure 2 , Figure 4 and Figure 5 The cleaning component 12 includes a motor 121 installed at the closed end of the filter tube 1. The output end of the motor 121 extends axially into the interior of the filter tube 1 and is axially connected to a drive shaft 122. The other end of the drive shaft 122 passes through the filter screen 114 and is rotatably connected to it. A mounting base 123 is also fixed. Several annularly distributed arc-shaped plates 124 are fixed on the outer side of the mounting base 123. Annular steel wires 125 are also provided on the arc-shaped plates 124, and the steel wires 125 scrape off the impurities attached to the filter screen 114. A reinforcing ring 126 that rotates with the outside of the first mounting cylinder 111 is also fixed at the other end of the arc-shaped plate 124.
[0050] It should be noted that when the cleaning component 12 is running, the motor 121 is preferably a geared motor. The motor 121 can drive the transmission shaft 122 to rotate, thereby driving the mounting base 123 and the arc plate 124 to rotate. The annular fine steel wires 125 provided on the arc plate 124 can directly contact the filter screen 114. During the rotation, they can scrape off the impurities attached to the filter screen 114, thereby cleaning the filter screen 114.
[0051] The steel wire 125 is arranged in a ring shape, which can reduce the friction between it and the filter screen 114 and reduce the wear of the surface coating of both.
[0052] In an embodiment of the present invention, please refer to Figure 6 and Figure 8 Two positioning ring plates 13 are welded to the outer circumference of the waste storage pipe 6. A heating element 14 is provided between the two positioning ring plates 13. The heating element 14 includes a second mounting cylinder 141 bolted between the two positioning ring plates 13. A sealed space is formed between the second mounting cylinder 141 and the waste storage pipe 6. A connector 142 and a wavy heating wire 143 are provided inside the space. A conductive structure 144 is also provided on the connector 142. The conductive structure 144 is a wire and a plug.
[0053] A copper fin is provided between the heating wire 143 and the waste storage tube 6 to conduct heat to the inside of the waste storage tube 6, and the inner wall of the second mounting cylinder 141 also has a heat insulation layer.
[0054] It should be noted that: impurities will enter the waste storage pipe 6 along the waste discharge pipe 5, and some molten aluminum will also enter the waste storage pipe 6 and will continue to concentrate in the waste storage pipe 6. In order to prevent the molten aluminum from cooling down, a heating element 14 is installed on the outside of the waste storage pipe 6 to continuously heat the waste storage pipe 6, so that the molten aluminum remains liquid and is convenient for subsequent cleaning.
[0055] In the heating element 14, the conductive structure 144 is connected to an external power source, which enables the heating wire 143 to work. The heating wire 143 directly generates heat to heat the waste storage tube 6. The insulation layer set on the second mounting cylinder 141 can reduce heat loss. At the same time, the copper fins set on the outside of the waste storage tube 6 can facilitate heat conduction, improve the heating effect on the molten aluminum inside the waste storage tube 6, and also play an energy-saving role.
[0056] When cleaning the impurities inside the waste storage pipe 6, this portion of molten aluminum will also be discharged, and the molten aluminum needs to be recycled to avoid waste.
[0057] In an embodiment of the present invention, please refer to Figure 6 and Figure 7 A second filter element 8 is also installed at the lower end of the second valve pipe 7. The second filter element 8 includes an installation pipe 81. One end of the installation pipe 81 is installed at the other end of the second valve pipe 7 through a rotating structure. Several ring-shaped handles 82 are also fixed on the outer circumference of the installation pipe 81.
[0058] The installation tube 81 is also fitted with a fixing ring 83. Several ring-shaped connecting plates 84 are vertically fixed on one side of the fixing ring 83. Several vertically distributed wire mesh cages 85 are fixed on the connecting plates 84. Each wire mesh cage 85 is filled with quartz sand or activated carbon.
[0059] It should be noted that the second filter element 8 is designed for the molten aluminum inside the waste storage pipe 6. The second filter element 8 is based on the installation pipe 81 and is installed on the second valve pipe 7 through a rotary joint, which enables quick installation and removal of the installation pipe 81. At the same time, multiple handles 82 are provided on the outside of the installation pipe 81 to facilitate the installation and removal operation.
[0060] When removing impurities and molten aluminum from the waste storage pipe 6, a second filter element 8 is required. The impurities and molten aluminum enter the installation pipe 81 and pass through the quartz sand or activated carbon filled inside the mesh cage 85 to intercept the impurities, while the molten aluminum can seep out and be recycled. After filtration, each mesh cage 85 can be disassembled and cleaned directly through the fixing ring 83.
[0061] After filtration is completed at this point, the installation pipe 81 is disassembled to allow backwashing.
[0062] The specific operating procedure for this device is as follows:
[0063] (1) Pipeline adjustment;
[0064] The other end of the liquid inlet pipe 2 can be connected to the discharge port of the melting equipment so that the molten aluminum can be directly introduced into it. Open the first valve pipe 4, close the second valve pipe 7 and the third valve pipe 10, and place the container holding the molten aluminum directly below the liquid outlet pipe 3.
[0065] (2) Filtration of molten aluminum;
[0066] Molten aluminum is introduced into the inlet pipe 2, flows through the filter pipe 1 and is discharged from the outlet pipe 3. During this process, impurities in the molten aluminum are intercepted by the filter screen 114 to improve the purity of the molten aluminum. At the same time, the cleaning component 12 needs to be turned on. The motor 121 drives the mounting base 123 and the arc plate 124 to rotate through the transmission shaft 122. Then, the steel wire 125 scrapes off the impurities attached to the filter screen 114. The impurities are concentrated inside the waste storage pipe 6 under the action of gravity. At the same time, the heating component 14 is turned on, so that the heating wire 143 generates heat and heats the waste storage pipe 6 to prevent the molten aluminum inside the waste storage pipe 6 from cooling down.
[0067] (3) Cleaning of waste storage pipes;
[0068] Open the second valve pipe 7. The impurities and molten aluminum inside the waste storage pipe 6 pass through the installation pipe 81. The impurities are intercepted by the quartz sand or activated carbon in the mesh cage 85 inside the installation pipe 81, while the molten aluminum can pass through. Excess molten aluminum also needs to be recycled. After the filtration is completed, remove the installation pipe 81.
[0069] (4) Cleaning;
[0070] The inlet pipe 2 is closed, the first valve pipe 4 can be closed or the opening size can be reduced, and the second valve pipe 7 and the third valve pipe 10 are opened at the same time. A water pump is connected to the inlet pipe 9 to introduce clean water into the filter pipe 1. The clean water flows back through the filter screen 114 to further clean the filter screen 114. During this process, the cleaning component 12 is in the open state to improve the cleaning effect on the filter screen 114. Then the clean water will flow out from the waste storage pipe 6 and the outlet pipe 3 to achieve deep cleaning of the waste storage pipe 6.
[0071] The above are merely embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.
Claims
1. A slag removal mechanism for molten aluminum in aluminum rod production, characterized in that, include: A filter tube (1) has an inlet pipe (2) at one end and is closed at the other end. An outlet pipe (3) is provided on the outer circumference near the closed end, and a waste discharge pipe (5) is provided near the inlet pipe (2). A waste storage pipe (6) is fixed at the other end of the waste discharge pipe (5). The first filter element (11) is installed inside the filter tube (1) near the waste discharge pipe (5). The first filter element (11) is used to intercept impurities in the molten aluminum flowing through the filter tube (1). The cleaning component (12) is installed at the closed end of the filter tube (1) and extends axially into the interior of the filter tube (1) and contacts the first filter element (11) to scrape off the impurities attached to the first filter element (11). Heating element (14) is installed outside the waste storage pipe (6) to heat the small amount of molten aluminum concentrated inside the waste storage pipe (6) so that the molten aluminum remains in a liquid state; The second filter element (8) is connected to the waste storage pipe (6) and is used to filter out a small amount of molten aluminum concentrated in the waste storage pipe (6).
2. The aluminum molten metal slag discharge mechanism for aluminum rod production according to claim 1, characterized in that, The other end of the liquid outlet pipe (3) is equipped with a first valve pipe (4), and the other end of the waste storage pipe (6) is equipped with a second valve pipe (7); The filter tube (1) is also equipped with a water inlet pipe (9) near the closed end on the outer circumference of the filter tube (1), and a third valve pipe (10) is installed at the other end of the water inlet pipe (9).
3. The aluminum molten metal slag discharge mechanism for aluminum rod production according to claim 1, characterized in that, The first filter element (11) includes a first mounting cylinder (111) disposed inside the filter tube (1). A mounting ring (112) fixed to the inner circumference of the filter tube (1) is disposed on one side of the first mounting cylinder (111). The diameter of the mounting ring (112) is larger than the diameter of the first mounting cylinder (111). An annular mesh plate (113) is also disposed between one end of the first mounting cylinder (111) and the mounting ring (112). A filter screen (114) is fixed at the other end of the first mounting cylinder (111).
4. The aluminum molten metal slag discharge mechanism for aluminum rod production according to claim 3, characterized in that, The filter screen (114) is hemispherical with its convex surface facing the liquid inlet pipe (2). The filter screen (114) is located at the connection between the waste discharge pipe (5) and the filter pipe (1).
5. The aluminum molten metal slag discharge mechanism for aluminum rod production according to claim 1, characterized in that, The cleaning component (12) includes a motor (121) installed at the closed end of the filter tube (1). The output end of the motor (121) extends axially into the interior of the filter tube (1) and is axially connected to a drive shaft (122). The other end of the drive shaft (122) passes through the filter screen (114) and is rotatably connected to it. A mounting base (123) is also fixed thereon. Several annularly distributed arc-shaped plates (124) are fixed on the outer side of the mounting base (123). Annular steel wires (125) are also provided on the arc-shaped plates (124), and the steel wires (125) scrape off the impurities attached to the filter screen (114). A reinforcing ring (126) that rotates outside the first mounting cylinder (111) is also fixed at the other end of the arc-shaped plate (124).
6. The aluminum molten metal slag discharge mechanism for aluminum rod production according to claim 1, characterized in that, Two positioning ring plates (13) are also welded to the outer circumference of the waste storage pipe (6).
7. The aluminum molten metal slag discharge mechanism for aluminum rod production according to claim 1, characterized in that, The heating element (14) includes a second mounting cylinder (141) bolted between two positioning ring plates (13), forming a sealed space between the second mounting cylinder (141) and the waste storage pipe (6), and a connector (142) and a wavy heating wire (143) are provided inside the space. The connector (142) is also provided with a conductive structure (144), which is a wire and a plug.
8. The aluminum molten metal slag discharge mechanism for aluminum rod production according to claim 7, characterized in that, A fin is provided between the heating wire (143) and the waste storage tube (6). The fin is made of copper and is used to conduct heat to the inside of the waste storage tube (6). The inner wall of the second mounting cylinder (141) also has a heat insulation layer.
9. The aluminum molten metal slag discharge mechanism for aluminum rod production according to claim 1, characterized in that, The second filter element (8) includes an installation tube (81), one end of which is installed on the other end of the second valve tube (7) via a rotating structure. Several ring-shaped handles (82) are also fixed on the outer circumference of the installation tube (81). The mounting tube (81) is also fitted with a fixing ring (83). Several ring-shaped connecting plates (84) are vertically fixed on one side of the fixing ring (83). Several vertically distributed mesh cages (85) are fixed on the connecting plates (84). Each mesh cage (85) is filled with filter media.
10. The aluminum molten metal slag discharge mechanism for aluminum rod production according to claim 9, characterized in that, The filter medium is quartz sand or activated carbon.