Aluminum Scrap Recycling Melting Furnace

Abstract

The present invention relates to an aluminum waste recycling melting furnace, which includes a closed outer shell and a melting furnace main body fixedly arranged at the bottom inside the closed outer shell. One side of the closed outer shell is provided with an opening, and a hatch door that fits the opening is rotatably arranged below the opening of the closed outer shell. Multiple groups of feeding assemblies for fixing aluminum blocks are sequentially arranged on the inner side of the hatch door from top to bottom. By providing a closed outer shell above the melting furnace main body in the present invention, before the aluminum material is put in, the inert gas replenishing device continuously injects inert gas into the air outlet holes, enabling the inert gas to squeeze out the air inside the melting furnace main body and inside the closed outer shell. Then, the hatch door is closed and the feeding of the aluminum material is controlled. It is neither necessary to worry about partial oxidation of the aluminum blocks outside the melting furnace main body, nor is it necessary to prevent air from entering the melting furnace when the aluminum blocks fall into the melting furnace main body instantaneously. Therefore, the melting effect of waste aluminum is greatly improved, and the occurrence of burning loss phenomena caused by aluminum oxidation is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum recycling equipment, and particularly to a melting furnace for recycling aluminum waste. Background Art

[0002] Aluminum is a recyclable resource, and recycled aluminum is aluminum alloy or aluminum metal obtained by remelting and refining aluminum waste. The melting furnace is a carrier for containing aluminum waste and remelting the aluminum waste into molten aluminum.

[0003] Before putting aluminum waste into the melting furnace, various aluminum wastes are first pressed into blocks to reduce the volume of the aluminum waste, so that the melting furnace can contain more aluminum waste at the same time.

[0004] When the pressed aluminum waste blocks are put into the melting furnace for melting, in order to avoid oxidation and burning loss caused by the contact of aluminum with air (the oxidation of aluminum causes non-recyclable metal loss), the existing melting furnace injects inert gas on the upper surface of the furnace body to isolate air from entering the furnace body. However, since the block-shaped aluminum waste may not be completely submerged in the melting process in the melting furnace, part of the end face is still above the melting furnace, resulting in oxidation of this part of the aluminum material due to contact with air. Even when all the aluminum blocks are in the melting furnace, a gap will be generated at the moment when an aluminum block is dropped into the melting furnace and contacts the inert gas isolation layer, allowing external air to enter the melting furnace and oxidize the aluminum material being melted. Summary of the Invention

[0005] Aiming at the deficiencies of the existing technology, the present invention provides a melting furnace for recycling aluminum waste, and the specific technical solutions are as follows:

[0006] The melting furnace for recycling aluminum waste includes a closed outer shell and a melting furnace main body fixedly arranged at the inner bottom of the closed outer shell. One side of the closed outer shell is provided with an opening, and a hatch door that fits the opening is rotatably arranged below the opening of the closed outer shell. Multiple sets of feeding components for fixing aluminum blocks are sequentially arranged from top to bottom on the inner side of the hatch door. An anti-oxidation component for providing inert gas into the melting furnace is further arranged in the closed outer shell. The anti-oxidation component injects inert gas into the melting furnace main body and the closed outer shell while the hatch door rotates towards the opening direction to discharge the air in the melting furnace and the closed outer shell. After the hatch door fits the opening, it can enclose with the closed outer shell to form a closed cavity filled with inert gas.

[0007] By providing a closed outer shell above the main body of the smelting furnace, before the aluminum material is put in, the anti-oxidation component continuously injects inert gas, enabling the inert gas to squeeze out the air in the main body of the smelting furnace and in the closed outer shell from the opening. Then, the hatch door is closed, and then the feeding component inside the hatch door is controlled in sequence to put aluminum blocks into the main body of the smelting furnace. Since the closed outer shell and the hatch door enclose a closed cavity, and there is only inert gas in this cavity, when putting the aluminum material, there is no need to worry that part of the aluminum block is not in the main body of the smelting furnace and undergoes oxidation, nor can air enter the main body of the smelting furnace when the aluminum block falls into the main body of the smelting furnace instantaneously.

[0008] As an improvement of the above technical solution, the anti-oxidation component includes an inert gas replenishing device, and the inert gas replenishing device is arranged on the side wall of the closed outer shell opposite to the opening. A plurality of air outlet holes communicating with the inert gas replenishing device are annularly distributed on the inner wall of the port of the main body of the smelting furnace.

[0009] By providing an inert gas replenishing device on one side of the closed outer shell, inert gas can be continuously injected into the main body of the smelting furnace and the closed outer shell to squeeze out the air, preventing the aluminum material from oxidizing during smelting. The annularly distributed air outlet holes on the inner wall of the port of the main body of the smelting furnace need to communicate with the inert gas replenishing device, so as to achieve the purpose of uniformly injecting inert gas into the main body of the smelting furnace. This structure is similar to the prior art, except that the prior art only uses this structure to form an inert gas protection layer on the end face of the aluminum smelting furnace.

[0010] As an improvement of the above technical solution, the anti-oxidation component further includes an air sensor arranged on the top of the closed outer shell. The probe end of the air sensor passes through the top wall of the closed outer shell and is located in the closed cavity to detect whether there is still air in the closed outer shell, so as to predict the time to close the hatch door.

[0011] By providing an air sensor on the top of the closed outer shell, it can detect whether there is still air at the top inside the closed outer shell. The inert gas can be krypton or other inert gases with an air density greater than that of air, so that the air can be squeezed out of the closed outer shell from bottom to top. Therefore, when there is no air at the top inside the closed outer shell, it can be explained that there is only inert gas and no air in the main body of the smelting furnace and the closed outer shell. At this time, the air sensor emits a prompt sound, and the condition for closing the hatch door to put in waste aluminum materials can be achieved.

[0012] As an improvement of the above technical solution, legs are respectively fixed at the four corners of the closed outer shell, which can provide support for the closed outer shell, thereby reducing the load of the closed outer shell on the main body of the smelting furnace.

[0013] As an improvement of the above technical solution, a support frame is further provided on one side of the closed housing. When the hatch door rotates to the bottommost position, it is flush with and abuts against the end face of the support frame, facilitating the installation of the pressed aluminum block in the feeding assembly when the hatch door is opened.

[0014] As an improvement of the above technical solution, the feeding assembly includes a side support plate provided on the inner side of the hatch door. A limiting groove for accommodating the aluminum block is further formed in the side support plate. On the opposite side of the side support plate on the inner side of the hatch door, a rotatable support rod is movably provided, and an L-shaped support plate that abuts against the two side faces of the aluminum block at an angle is rotatably provided at the end of the support rod. Before feeding, the pressed waste aluminum blocks can be sequentially installed in the limiting groove of the side support plate, and then the L-shaped support plate is abutted against the other side of the waste aluminum block.

[0015] As an improvement of the above technical solution, both the side support plate and the L-shaped support plate are magnet blocks, and the opposite side faces of the side support plate and the L-shaped support plate are of different magnetic poles, so that the clamping force on the waste aluminum block can be generated by the fact that both the side support plate and the L-shaped support plate are magnets.

[0016] As an improvement of the above technical solution, an electromagnet is fixedly provided on the outer side of the hatch door corresponding to the position of the L-shaped support plate. The electromagnet is used in combination with the L-shaped support plate, and a pressure sensor is provided on the same side of the inner edge of the hatch door for each set of feeding assemblies.

[0017] When the hatch door is opened, the magnetic attraction between the electromagnet and the L-shaped support plate can be utilized to improve the clamping effect. When the hatch door is closing, the part of the hatch door where the lower feeding assembly is located will first abut against the opening, causing the pressure sensor to detect the pressure and then feedback it to the PLC controller, which can control the change in the energization direction of the energized coil of the electromagnet, enabling a repulsive force to be generated between the electromagnet and the L-shaped support plate, thereby sequentially feeding the aluminum blocks into the main body of the melting furnace from bottom to top.

[0018] As an improvement of the above technical solution, when the hatch door is open, the current of the energized coil of the electromagnet flows in the positive direction, and at this time, the magnetic pole of the electromagnet is different from the magnetic pole at the end close to the L-shaped support plate, so that the electromagnet and the L-shaped support plate are magnetically attracted.

[0019] As an improvement of the above technical solution, when the hatch door is closed, the pressure sensor feeds back a signal to the PLC controller under pressure, so that the PLC controller controls the current of the energized coil of the electromagnet to change to negative flow. At this time, the magnetic pole of the electromagnet is the same as the magnetic pole at the end close to the L-shaped support plate, so that the electromagnet and the L-shaped support plate are magnetically repelled, thereby generating a thrust to push the L-shaped support plate and the aluminum block to the other side to realize the feeding of the aluminum block.

[0020] The beneficial effects of the present invention:

[0021] 1. By providing a closed outer shell above the main body of the smelting furnace, before feeding the aluminum material, the inert gas replenishing device continuously injects inert gas into the air outlet holes, enabling the inert gas to squeeze the air inside the main body of the smelting furnace and inside the closed outer shell out from the opening. When the air sensor detects that there is no air inside the closed outer shell, it will emit a prompt sound. At this time, close the hatch and then sequentially control the feeding assembly inside the hatch to drop aluminum blocks into the smelting furnace. Since the closed outer shell and the hatch enclose a closed cavity, and there is only inert gas in this cavity, when feeding the aluminum material, there is no need to worry about partial oxidation of the aluminum blocks outside the main body of the smelting furnace, and it can also prevent air from entering the smelting furnace when the aluminum blocks fall into the main body of the smelting furnace instantaneously. Therefore, the smelting effect of waste aluminum is greatly improved, and the occurrence of burning loss caused by aluminum oxidation is reduced.

[0022] 2. By improving the traditional feeding assembly, before feeding, the pressed waste aluminum blocks can be sequentially installed in the limiting grooves of the side support plates, and then the L-shaped support plates are abutted against the other sides of the waste aluminum blocks. And since both the side support plates and the L-shaped support plates are magnets, they can generate a clamping force on the waste aluminum blocks, and the electromagnetic attraction between the electromagnet and the L-shaped support plates can improve the clamping effect. When the hatch is closed, the part of the hatch where the lower feeding assembly is located will first abut against the opening, causing the pressure sensor to detect the pressure and then feedback it to the PLC controller, which can control the energizing direction change of the energized coil of the electromagnet, enabling a repulsive force to be generated between the electromagnet and the L-shaped support plates, so as to sequentially drop the aluminum blocks into the main body of the smelting furnace from bottom to top. There is no need to worry about the upper waste aluminum blocks falling first and hitting the lower waste aluminum blocks. And since the lower waste aluminum blocks fall into the smelting furnace first, and dropping them from bottom to top in sequence can also achieve the effect of stacking the waste aluminum blocks in the main body of the smelting furnace, preventing the splashing of molten aluminum when the aluminum blocks fall into the smelting furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic three-dimensional view of the overall structure of the present invention;

[0024] Figure 2 Schematic view of feeding aluminum material in Embodiment 1 of the present invention;

[0025] Figure 3 Schematic view of the hatch closing in Embodiment 1 of the present invention;

[0026] Figure 4 Schematic three-dimensional view of the feeding assembly in Embodiment 2 of the present invention;

[0027] Figure 5 Schematic side view of the feeding assembly in Embodiment 2 of the present invention.

[0028] Reference numerals: 10 - closed housing; 101 - opening; 102 - leg; 20 - main body of smelting furnace; 30 - bin door; 40 - feeding assembly; 401 - side support plate; 402 - support rod; 403 - L-shaped support plate; 404 - electromagnet; 405 - pressure sensor; 50 - anti-oxidation assembly; 501 - inert gas replenishing device; 502 - air outlet hole; 503 - air sensor; 60 - support frame. Detailed implementation manners

[0029] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present 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 only used to explain the present invention and are not used to limit the present invention.

[0030] Embodiment 1

[0031] As Figure 1 、 Figure 2 and Figure 3 shown, Figure 1 is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of feeding aluminum materials in Embodiment 1 of the present invention; Figure 3 is a schematic diagram of the bin door being closed in Embodiment 1 of the present invention.

[0032] An aluminum waste recycling smelting furnace includes a closed housing 10 and a main body 20 of the smelting furnace fixedly arranged at the inner bottom of the closed housing 10. An opening 101 is provided on one side of the closed housing 10, and a bin door 30 that fits the opening 101 is rotatably arranged below the opening 101 of the closed housing 10. A plurality of groups of feeding assemblies 40 for fixing aluminum blocks are successively arranged from top to bottom on the inner side of the bin door 30. An anti-oxidation assembly 50 for providing inert gas into the smelting furnace is further arranged in the closed housing 10. The anti-oxidation assembly 50 injects inert gas into the main body 20 of the smelting furnace and the closed housing 10 while the bin door 30 rotates towards the opening 101 direction to discharge the air in the smelting furnace and the closed housing 10. After the bin door 30 fits the opening 101, it can enclose with the closed housing 10 to form a closed cavity filled with inert gas.

[0033] By providing a closed outer shell 10 above the main body 20 of the smelting furnace, before feeding aluminum materials, the anti-oxidation component 50 continuously injects inert gas, enabling the inert gas to extrude the air in the main body 20 of the smelting furnace and within the closed outer shell 10 from the opening 101. Then, the hatch door 30 is closed, and then the feeding component 40 inside the hatch door 30 is controlled in sequence to feed aluminum blocks into the main body 20 of the smelting furnace. Since the closed outer shell 10 and the hatch door 30 enclose a closed cavity, and there is only inert gas in this cavity, when feeding aluminum materials, there is no need to worry about partial oxidation of the aluminum blocks outside the main body 20 of the smelting furnace, nor is it necessary to prevent air from entering the main body 20 of the smelting furnace when the aluminum blocks fall into the main body 20 of the smelting furnace instantaneously.

[0034] To provide a supporting force for the closed outer shell 10, support legs 102 are fixedly provided at the four corners of the closed outer shell 10, enabling the closed outer shell 10 to directly contact the ground, thereby reducing the load of the closed outer shell 10 on the main body 20 of the smelting furnace.

[0035] Such as Figure 1 and Figure 2 shown, Figure 1 is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of feeding aluminum materials in Embodiment 1 of the present invention.

[0036] The anti-oxidation component 50 includes an inert gas replenishing device 501, and the inert gas replenishing device 501 is provided on the side wall of the closed outer shell 10 opposite to the opening 101. A plurality of air outlets 502 communicating with the inert gas replenishing device 501 are annularly distributed on the inner wall of the port of the main body 20 of the smelting furnace.

[0037] By providing an inert gas replenishing device 501 on one side of the closed outer shell 10, inert gas can be continuously injected into the main body 20 of the smelting furnace and within the closed outer shell 10 to extrude the air, preventing the oxidation of aluminum materials during smelting. The annularly distributed air outlets 502 on the inner wall of the port of the main body 20 of the smelting furnace need to communicate with the inert gas replenishing device 501, so as to achieve the purpose of uniformly injecting inert gas into the main body 20 of the smelting furnace. This structure is similar to the prior art. However, the prior art only uses this structure to form an inert gas protection layer at the end face of the aluminum smelting furnace. The inert gas can be krypton or other inert gases with an air density greater than that of air, so as to extrude the air from the bottom up out of the closed outer shell 10.

[0038] Such as Figure 1 、 Figure 2 and Figure 3 shown, Figure 1 is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of feeding aluminum materials in Embodiment 1 of the present invention; Figure 3 is a schematic diagram of the hatch door closing in Embodiment 1 of the present invention.

[0039] The anti-oxidation component 50 further includes an air sensor 503 disposed on the top of the closed outer shell 10. The probe end of the air sensor 503 passes through the top wall of the closed outer shell 10 and is located inside the closed cavity to detect whether there is still air inside the closed outer shell 10, so as to predict the time to close the hatch 30.

[0040] By providing the air sensor 503 on the top of the closed outer shell 10, it is possible to detect whether there is still air at the top inside the closed outer shell 10. Since the density of the inert gas used is greater than that of air, when there is no air at the top inside the closed outer shell 10, it can be explained that both the main body of the melting furnace 20 and the closed outer shell 10 are filled with inert gas and there is no air. At this time, the air sensor 503 emits a prompt sound, and the condition for closing the hatch 30 to put in scrap aluminum can be achieved.

[0041] Embodiment 2

[0042] As Figure 1 、 Figure 4 and Figure 5 shown, Figure 1 is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 4 is a three-dimensional view of the feeding component in Embodiment 2 of the present invention; Figure 5 is a side view of the feeding component in Embodiment 2 of the present invention.

[0043] The feeding component 40 includes a side support plate 401 disposed inside the hatch 30. A limiting groove for accommodating aluminum blocks is also formed inside the side support plate 401. Opposite to the side support plate 401 inside the hatch 30, a rotatable support rod 402 is movably provided, and an L-shaped support plate 403 that abuts against the two side faces of the included angle of the aluminum block is rotatably provided at the end of the support rod 402. Both the side support plate 401 and the L-shaped support plate 403 are magnet blocks, and the opposite side faces of the side support plate 401 and the L-shaped support plate 403 are of different magnetic poles.

[0044] By improving the traditional feeding component 40, before feeding, the pressed scrap aluminum blocks can be sequentially installed in the limiting groove of the side support plate 401, and then the L-shaped support plate 403 is abutted against the other side of the scrap aluminum block. And by using the fact that both the side support plate 401 and the L-shaped support plate 403 are magnets, a clamping force on the aluminum block can be generated, thereby realizing the clamping of the aluminum block.

[0045] In order to facilitate the installation of the pressed aluminum blocks in the feeding component 40 when the hatch 30 is opened, a support frame 60 is also provided on one side of the closed outer shell 10. When the hatch 30 rotates to the bottommost position, it abuts flush with the end face of the support frame 60.

[0046] As Figure 1 、 Figure 4 and Figure 5 shown, Figure 1Schematic three-dimensional diagram of the overall structure of the present invention; Figure 4 Three-dimensional diagram of the feeding component in the second embodiment of the present invention; Figure 5 Side view of the feeding component in the second embodiment of the present invention.

[0047] On the outer side of the bin door 30, an electromagnet 404 is fixedly provided corresponding to the position of the L-shaped support plate 403. The electromagnet 404 is used in conjunction with the L-shaped support plate 403. When the bin door 30 is open, the current in the energized coil of the electromagnet 404 flows in the positive direction. At this time, the magnetic pole of the electromagnet 404 is different from the magnetic pole of the end close to the L-shaped support plate 403, so that the electromagnet 404 and the L-shaped support plate 403 are magnetically attracted.

[0048] When the bin door 30 is open, the electromagnet 404 can be energized, and the current in the energized coil of the electromagnet 404 flows in the positive direction, so that it shows a different magnetic pole from the end of the L-shaped support plate 403. The principle of attraction between opposite magnetic poles of magnets can be used to generate an adsorption force between the electromagnet 404 and the L-shaped support plate 403, thereby improving the clamping stability of the feeding component 40.

[0049] As Figure 1 、 Figure 4 and Figure 5 shown, Figure 1 Schematic three-dimensional diagram of the overall structure of the present invention; Figure 4 Three-dimensional diagram of the feeding component in the second embodiment of the present invention; Figure 5 Side view of the feeding component in the second embodiment of the present invention.

[0050] On the inner edge of the bin door 30, a pressure sensor 405 is provided on the same side of each group of feeding components 40. When the bin door 30 is closed, the pressure sensor 405 is pressured to feedback a signal to the PLC controller, so that the PLC controller controls the current in the energized coil of the electromagnet 404 to flow in the negative direction. At this time, the magnetic pole of the electromagnet 404 is the same as the magnetic pole of the end close to the L-shaped support plate 403, so that the electromagnet 404 and the L-shaped support plate 403 are magnetically repelled, thereby generating a thrust to push the L-shaped support plate 403 and the aluminum block to the other side to realize the feeding of the aluminum block.

[0051] When the bin door 30 is closing, the angle between the bin door 30 and the bottom of the opening 101 will gradually decrease. The part 40 of the bin door 30 where the lower feeding assembly is located will first contact the opening 101, causing the pressure sensor 405 to detect pressure, and then feedback to the PLC controller, which can control the change in the energizing direction of the energized coil of the electromagnet 404. This can generate a repulsive force between the electromagnet 404 and the L-shaped support plate 403, so as to sequentially feed the aluminum blocks into the melting furnace body 20 from bottom to top. There is no need to worry that the upper waste aluminum blocks will fall first and hit the lower waste aluminum blocks. And because the lower waste aluminum blocks fall into the melting furnace first, and the sequential feeding from bottom to top can also achieve the effect of stacking the waste aluminum blocks in the melting furnace body, preventing the aluminum blocks from falling into the melting furnace and causing splashing of molten aluminum.

[0052] Working principle

[0053] By providing a closed housing 10 above the melting furnace body 20, before feeding the aluminum material, the inert gas replenishing device 501 continuously injects inert gas into the air outlet hole 502, which can cause the inert gas to squeeze out the air in the melting furnace body 20 and the closed housing 10 from the opening 101. When the air sensor 503 detects that there is no air in the closed housing 10, it will emit a prompt sound. At this time, the bin door 30 assembled with aluminum blocks is closed. During the closing process of the bin door 30, the part of the bin door 30 where the lower feeding assembly 40 is located will first contact the opening 101, causing the pressure sensor 405 to detect pressure, and then feedback to the PLC controller, which can control the change in the energizing direction of the energized coil of the electromagnet 404. This can generate a repulsive force between the electromagnet 404 and the L-shaped support plate 403, so as to sequentially feed the aluminum blocks into the melting furnace body 20 from bottom to top.

[0054] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Aluminum waste recycling melting furnace, Comprising: A closed housing (10), and a melting furnace body (20) fixedly arranged at the bottom inside the closed housing (10). One side of the closed housing (10) is provided with an opening (101), and a hatch door (30) that fits the opening (101) is rotatably arranged below the opening (101) of the closed housing (10). It is characterized in that multiple sets of feeding components (40) for fixing aluminum blocks are sequentially arranged from top to bottom on the inner side of the hatch door (30). An anti-oxidation component (50) for providing inert gas into the melting furnace is further arranged inside the closed housing (10). While the hatch door (30) rotates towards the opening (101), the anti-oxidation component (50) injects inert gas into the melting furnace body (20) and the inside of the closed housing (10) to discharge the air inside the melting furnace and the closed housing (10). After the hatch door (30) fits the opening (101), it can enclose a closed cavity filled with inert gas with the closed housing (10).

2. The aluminum waste recycling melting furnace according to claim 1, Characterized in that: The anti-oxidation component (50) includes an inert gas replenishing device (501), and the inert gas replenishing device (501) is arranged on the side wall of the closed housing (10) opposite to the opening (101). A plurality of air outlet holes (502) communicated with the inert gas replenishing device (501) are annularly distributed on the inner wall of the port of the melting furnace body (20).

3. The aluminum waste recycling melting furnace according to claim 2, Characterized in that: The anti-oxidation component (50) further includes an air sensor (503) arranged on the top of the closed housing (10). The probe end of the air sensor (503) passes through the top wall of the closed housing (10) and is located inside the closed cavity to detect whether there is still air inside the closed housing (10), so as to predict the time to close the hatch door (30).

4. The aluminum waste recycling melting furnace according to claim 1, Characterized in that: Legs (102) are respectively fixedly arranged at the four corners of the closed housing (10).

5. The aluminum waste recycling melting furnace according to claim 1, Characterized in that: A support frame (60) is further arranged on one side of the closed housing (10). When the hatch door (30) rotates to the bottom, it is flush with and abuts against the end face of the support frame (60).

6. The aluminum waste recycling melting furnace according to claim 1, Characterized in that: The feeding component (40) includes a side support plate (401) arranged on the inner side of the hatch door (30). A limiting groove for accommodating aluminum blocks is further opened inside the side support plate (401). A rotatable support rod (402) is movably arranged on the inner side of the hatch door (30) opposite to the side support plate (401), and an L-shaped support plate (403) that abuts against the two side faces of the included angle of the aluminum block is rotatably arranged at the end of the support rod (402).

7. The aluminum waste recycling melting furnace according to claim 6, Characterized in that: Both the side support plate (401) and the L-shaped support plate (403) are magnet blocks, and the opposite side faces of the side support plate (401) and the L-shaped support plate (403) are different magnetic poles.

8. The aluminum waste recycling melting furnace according to claim 7, characterized in that: An electromagnet (404) is fixedly provided outside the bin door (30) corresponding to the position of the L-shaped support plate (403). The electromagnet (404) is used in combination with the L-shaped support plate (403). A pressure sensor (405) is provided on the inner edge of the bin door (30) on the same side of each feeding assembly (40).

9. The aluminum waste recycling melting furnace according to claim 8, characterized in that: When the bin door (30) is opened, the current of the energized coil of the electromagnet (404) flows in the forward direction. At this time, the magnetic pole of the electromagnet (404) is different from the magnetic pole at one end close to the L-shaped support plate (403), so that the electromagnet (404) and the L-shaped support plate (403) are magnetically attracted to each other.

10. The aluminum waste recycling melting furnace according to claim 8, characterized in that: When the bin door (30) is closed, the pressure sensor (405) feeds back a signal to the PLC controller under pressure, so that the PLC controller controls the current of the energized coil of the electromagnet (404) to change to negative flow. At this time, the magnetic pole of the electromagnet (404) is the same as the magnetic pole at one end close to the L-shaped support plate (403), so that the electromagnet (404) and the L-shaped support plate (403) are magnetically repelled, thereby generating a thrust to push the L-shaped support plate (403) and the aluminum block to the other side to realize the feeding of the aluminum block.

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