Smelting furnace capable of reducing aluminum scrap burning loss and realizing high and low position tapping

Abstract

This utility model discloses a smelting furnace that reduces aluminum shavings burn-off and achieves high and low level discharge. It includes a furnace body, a connecting body, and a drive mechanism. The connecting body is installed on the furnace body and has a lifting well, a mixing well, a first channel connecting the lifting well and the mixing well, a second channel connecting the first channel to the outside, a third channel connecting the lifting well to the outside, and a fourth channel connecting the mixing well to the outside. A fifth channel connects the lifting well to the inner cavity of the furnace body, and a sixth channel connects the mixing well to the inner cavity of the furnace body. In the direction from the top to the bottom of the furnace body, the second channel is located above the third and fourth channels. Part of the drive mechanism is housed within the lifting well, and the drive mechanism is used to transport the molten aluminum in the lifting well to the mixing well. This smelting furnace can reduce aluminum shavings burn-off, avoid excessive waste of aluminum shavings, save production costs, and achieve high and low level discharge by opening discharge channels or discharge ports at the same height position in the smelting furnace.

Description

Technical Field

[0001] This utility model relates to the field of aluminum or aluminum alloy casting technology, and in particular to a smelting furnace that reduces aluminum chip burn-off and enables high and low level discharge. Background Technology

[0002] Aluminum alloy casting is a process in which aluminum alloy is melted and poured into a mold for cooling and solidification to obtain an aluminum alloy ingot of the desired shape and size. The process includes raw material preparation, smelting, purification, casting, cooling and solidification, and mold removal.

[0003] In current aluminum or aluminum alloy casting production, raw materials such as aluminum shavings, aluminum ingot scraps, and aluminum coils are melted in a furnace to form molten aluminum. Subsequent processes include purification, impurity removal, refining, degassing, and casting to produce aluminum alloy ingots. In existing technologies, aluminum shavings from milling the ingots are fed directly into the furnace. These shavings float on the surface of the molten aluminum, and the heating effect of the furnace flame results in significant shaving loss, with approximately 18%-20% burning into aluminum slag. This leads to waste and increased production costs.

[0004] In addition, due to production needs, discharge channels or discharge ports are set at different locations according to different requirements. However, if discharge channels or discharge ports are directly opened on the furnace body, the melting quality of aluminum liquid and the melting quality of aluminum liquid vary at different heights of the melting furnace, which causes the melting quality or flow rate of the discharged aluminum liquid to not meet the requirements of subsequent processes. Therefore, it is not possible to achieve high and low level discharge by opening discharge channels or discharge ports at a certain height of the melting furnace. Utility Model Content

[0005] The main objective of this invention is to provide a smelting furnace that reduces aluminum chip burn-off and enables high and low level discharge, thereby solving the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model proposes a smelting furnace that reduces aluminum shavings burn-off and enables high and low level discharge, comprising:

[0007] Furnace body;

[0008] A connecting body is installed on the outside of the furnace body. The connecting body has a lifting well, a mixing well, a first channel, a second channel, a third channel, and a fourth channel. The connecting body and the furnace body have a fifth channel and a sixth channel. The first channel connects the lifting well and the mixing well. One end of the second channel connects to the first channel and the other end passes through the connecting body. One end of the third channel connects to the lifting well and the other end passes through the connecting body. One end of the fourth channel connects to the mixing well and the other end passes through the connecting body. The fifth channel connects the lifting well and the inner cavity of the furnace body. The sixth channel connects the mixing well and the inner cavity of the furnace body. In the direction from the top to the bottom of the furnace body, the second channel is located above the third channel and the fourth channel.

[0009] A drive mechanism is mounted on the connecting body, with a portion of the drive mechanism housed within the lifting well. The drive mechanism is used to transport molten aluminum from the lifting well to the mixing well.

[0010] In an optional embodiment, the connector further has a seventh channel that connects the first channel and the mixing well. The seventh channel is vortex-shaped, and the cross-sectional dimensions of the seventh channel gradually decrease from the first channel to the mixing well.

[0011] In an alternative embodiment, the first channel, the third channel, and the fifth channel are respectively connected to the bottom of the lifting shaft.

[0012] In an alternative embodiment, the fourth channel and the sixth channel are respectively connected to the bottom of the mixing well, and the seventh channel is connected between the bottom and the top of the mixing well.

[0013] In an optional embodiment, the upper part of the mixing well is further provided with a receiving hopper for conveying aluminum chips to the mixing well.

[0014] In an optional embodiment, a first baffle is provided on the first channel. In the direction of aluminum liquid conveying, the first baffle is located in front of the connection between the first channel and the second channel. The relative position of the first baffle and the first channel is adjustable. The first baffle is used to control the opening or closing of the first channel.

[0015] In an optional embodiment, a second baffle is provided on the second channel, the relative position of the second baffle and the second channel is adjustable, and the second baffle is used to control the connection or closure of the second channel.

[0016] In an optional embodiment, a plug is provided on the third channel and the fourth channel respectively, and each plug is used to control the connection or closure of the third channel and the fourth channel.

[0017] In an optional embodiment, the drive mechanism includes a support frame, a first drive member, a slider, a connecting frame, a second drive member, a rotating shaft, and a rotor. The support frame has a slide rail and is mounted on the connecting body. The first drive member is mounted on the support frame. The slider is connected to the output shaft of the first drive member and is movably connected to the slide rail. The connecting frame is mounted on the slider. The second drive member is mounted on the connecting frame. The rotating shaft is rotatably mounted on the connecting frame and is rotatably connected to the output shaft of the second drive member. The rotor is mounted on the rotating shaft and can be housed at the bottom of the lifting shaft.

[0018] In an alternative embodiment, the rotating shaft is rotatably connected to the output shaft of the second drive member via a transmission belt.

[0019] Compared with the prior art, the present invention has the following technical effects:

[0020] 1. This utility model relates to a smelting furnace that reduces aluminum shavings burn-off and enables high and low level discharge. A connecting body is installed on one side of the furnace body. The connecting body has a lifting well and a mixing well. A negative pressure is generated by a driving mechanism to transport the high-temperature aluminum liquid in the furnace body to the mixing well. The aluminum shavings are mixed and melted with the high-temperature aluminum liquid in the mixing well. The aluminum shavings do not directly contact the flame during the melting process, which reduces the burn-off of aluminum shavings, avoids excessive waste of aluminum shavings, and saves production costs.

[0021] When the molten aluminum in the melting furnace reaches the predetermined liquid level, a second, third, and fourth channel are provided on the connecting body. The molten aluminum can be discharged from the higher level in the melting furnace through the second channel for use as reserve material in the next process. When the melting furnace needs maintenance, the molten aluminum can be discharged from the lower level in the melting furnace through the third and fourth channels for maintenance. This allows for both high and low level discharge by providing discharge channels or outlets at the same height within the melting furnace.

[0022] 2. The channel connecting the lifting well and the mixing well is a vortex with a gradually changing cross-sectional size. When the high-temperature aluminum liquid is transported from the lifting well to the mixing well, a high-temperature aluminum liquid vortex flow can be continuously formed to fully mix and melt the aluminum chips. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 This is a cross-sectional view of a smelting furnace according to the present invention, which reduces aluminum chip burn-off and enables high and low level discharge.

[0025] Figure 2 for Figure 1 Enlarged view at point D;

[0026] Figure 3 for Figure 1 A cross-sectional view along the AA direction;

[0027] Figure 4 for Figure 1 Cross-sectional view along the BB direction;

[0028] Figure 5 for Figure 1 Side view from the center (C).

[0029] Explanation of icon numbers:

[0030]

[0031] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0035] Reference Figures 1-5 This utility model proposes a smelting furnace 100 that reduces aluminum chip burn-off and enables high and low level discharge.

[0036] In this embodiment of the invention, a smelting furnace 100 that reduces aluminum shavings burn-off and achieves high and low level discharge includes a furnace body 1, a connecting body 3, and a drive mechanism 4. The furnace body 1 has an inner cavity 2; the connecting body 3 is installed on the outside of the furnace body 1, and the connecting body 3 has a lifting well 311, a mixing well 312, a first channel 31, a second channel 32, a third channel 33, and a fourth channel 34. The connecting body 3 and the furnace body 1 have a fifth channel 35 and a sixth channel 36. The first channel 31 connects the lifting well 311 and the mixing well 312; one end of the second channel 32 connects to the first channel 31, and the other end passes through the connecting body 3; one end of the third channel 33 connects to the lifting well 311, and the other end passes through the connecting body 3. 3. One end of the fourth channel 34 is connected to the mixing well 312, and the other end is connected to the connecting body 3. The fifth channel 35 is connected to the lifting well 311 and the inner cavity 2 of the furnace body 1. The sixth channel 36 is connected to the mixing well 312 and the inner cavity 2 of the furnace body 1. In the direction from the top to the bottom of the furnace body 1, the second channel 32 is located above the third channel 33 and the fourth channel 34. The drive mechanism 4 is installed on the connecting body 3. Part of the drive mechanism 4 is housed in the lifting well 311. The drive mechanism 4 is used to transport the aluminum liquid in the lifting well 311 to the mixing well 312.

[0037] Specifically, the fifth channel 35 is formed on the furnace body 1 and the connecting body 3, that is, a portion of the fifth channel 35 is formed on the furnace body 1 and a portion of the fifth channel 35 is formed on the connecting body 3. The fifth channel 35 extends along the X direction and connects the inner cavity 2 of the furnace body 1 and the lifting shaft 311. Similar to the fifth channel 35, the sixth channel 36 is formed on the furnace body 1 and a portion of the sixth channel 36 is formed on the connecting body 3. The sixth channel 36 extends along the X direction and connects the inner cavity 2 of the furnace body 1 and the mixing shaft 312. The second channel 32, the third channel 33, and the fourth channel 34 also extend along the X direction, wherein the X direction is perpendicular to the axis of the furnace body 1.

[0038] The inner cavity 2 of the furnace body 1 is used to melt aluminum scrap such as solid aluminum ingots and aluminum coils. The furnace burner is activated to heat the solid aluminum ingots to a temperature that can melt them. After the solid aluminum ingots are melted into molten aluminum, they are transported to the lifting well 311 through the fifth channel 35. The drive mechanism 4 transports the high-temperature molten aluminum to the mixing well 312 through the first channel 31. Aluminum chips are transported into the mixing well 312 so that the aluminum chips are mixed with the high-temperature molten aluminum and melted into molten aluminum. Finally, the aluminum chips are returned to the inner cavity 2 of the furnace body 1 through the sixth channel 36 to prevent the aluminum chips from being directly thrown from the furnace opening and coming into direct contact with the flame of the furnace, which would cause serious burn damage to the aluminum chips.

[0039] The high and low level discharge of the smelting furnace can also be achieved by controlling the opening and closing of the second channel 32, the third channel 33, and the fourth channel 34. For example, when the molten aluminum in the smelting furnace reaches the predetermined liquid level, the molten aluminum can be discharged from the high level in the smelting furnace through the second channel 32 as reserve material for the next process. When the smelting furnace needs to be repaired, the molten aluminum can be discharged from the low level in the smelting furnace through the third channel 33 and the fourth channel 34 for maintenance.

[0040] In one embodiment of this utility model, the connecting body 3 is further provided with a seventh channel 37, which connects the first channel 31 and the mixing well 312. The seventh channel 37 is vortex-shaped, and the cross-sectional dimensions of the seventh channel 37 gradually decrease from the first channel 31 to the mixing well 312. When the high-temperature molten aluminum is transported from the lifting well 311 to the mixing well 312 through the first channel 31 and the seventh channel 37, a high-temperature molten aluminum vortex flow can be continuously formed, which continuously and thoroughly mixes and melts the aluminum chips. Finally, the aluminum chips flow back to the inner cavity 2 of the furnace body 1 from the mixing well 312 with the high-temperature molten aluminum vortex flow.

[0041] In one embodiment of this utility model, the first channel 31, the third channel 33, and the fifth channel 35 are respectively connected to the bottom of the lifting shaft 311. The fourth channel 34 and the sixth channel 36 are respectively connected to the bottom of the mixing shaft 312, and the seventh channel 37 is connected between the bottom and the top of the mixing shaft 312. In the direction from the top of the furnace to the bottom of the furnace body 1, the bottom of the lifting shaft 311 and the bottom of the mixing shaft 312 are at the same height.

[0042] Refer to Figure 3The first channel 31 is divided into a front section 3101 and a rear section 3102. In the direction from the top to the bottom of the furnace body 1, the front section 3101 extends upwards from the bottom of the lifting shaft 311 to the height between the bottom and top of the mixing shaft 312. The rear section 3102 extends along the Y direction and connects to the seventh channel 37, which connects between the bottom and top of the mixing shaft 312. The Y direction is perpendicular to the X direction. The first channel 31 extends upwards from the bottom of the lifting shaft 311 to the height between the bottom and top of the mixing shaft 312. A lifting ramp is formed between the lifting shaft 311 and the mixing shaft 312, allowing aluminum chips to fully mix and melt with the high-temperature molten aluminum in the mixing shaft 312, i.e., at the bottom of the mixing shaft 312. This prevents the molten aluminum or aluminum chips from flowing back into the lifting shaft 311 under the influence of the high-temperature molten aluminum vortex.

[0043] In the direction from the top to the bottom of the furnace body 1, the height of the connection between the second channel 32 and the first channel 31 is the same as the height of the connection between the seventh channel 37 and the first channel 31. That is, in the direction from the top to the bottom of the furnace body 1, the second channel 32 is located above the third channel 33 and the fourth channel 34, thereby realizing the high and low position discharge of the furnace body 1.

[0044] In one embodiment of the present invention, a receiving hopper 313 is also provided on the upper part of the mixing well 312, and the receiving hopper 313 is used to transport aluminum chips to the mixing well 312.

[0045] In one embodiment of this utility model, a first baffle 38 is provided on the first channel 31. In the direction of aluminum liquid conveying, the first baffle 38 is located in front of the connection between the first channel 31 and the second channel 32. The aluminum liquid flows sequentially through the connection between the first channel 31 and the second channel 32 and the first baffle 38. The relative position of the first baffle 38 and the first channel 31 is adjustable, and the first baffle 38 is used to control the opening or closing of the first channel 31. A second baffle 39 is provided on the second channel 32. The relative position of the second baffle 39 and the second channel 32 is adjustable, and the second baffle 39 is used to control the opening or closing of the second channel 32.

[0046] When the molten aluminum in the smelting furnace reaches a predetermined level and needs to be discharged at a higher level, the first baffle 38 can be closed and the second baffle 39 opened, so that the first channel 31 is cut off and the second channel 32 is connected. The molten aluminum is then discharged from the smelting furnace through the second channel 32 as reserve material for the next process. Conversely, the molten aluminum can be transported to the mixing well 312 through the first channel 31.

[0047] In one embodiment of this utility model, a plug 310 is respectively provided on the third channel 33 and the fourth channel 34, and each plug 310 is used to control the connection or closure of the third channel 33 and the fourth channel 34. When it is necessary to repair the smelting furnace, the plugs 310 on the third channel 33 and the fourth channel 34 can be pulled out, and the molten aluminum can be discharged from the smelting furnace through the third channel 33 and the fourth channel 34 for repair.

[0048] Refer to Figure 4 In one embodiment of this utility model, the drive mechanism 4 includes a support frame 41, a first drive member 42, a slider 44, a connecting frame 45, a second drive member 46, a rotating shaft 47, and a rotor 48. The support frame 41 has a slide rail 43 mounted on the connecting body 3. The first drive member 42 is mounted on the support frame 41. The slider 44 is connected to the output shaft of the first drive member 42 and is movably connected to the slide rail 43. The connecting frame 45 is mounted on the slider 44. The second drive member 46 is mounted on the connecting frame 45. The rotating shaft 47 is rotatably mounted on the connecting frame 45 and rotatably connected to the output shaft of the second drive member 46. The rotor 48 is mounted on the rotating shaft 47 and can be housed at the bottom of the lifting shaft 311. The rotating shaft 47 is rotatably connected to the output shaft of the second drive member 46 via a transmission belt.

[0049] Specifically, rotor 48 is a graphite rotor 48, and shaft 47 is rotatably mounted on connecting frame 45 via bearings. A drive wheel is connected to the end of shaft 47 away from rotor 48 and the output shaft of the second drive member 46, respectively. The two drive wheels are connected by a belt, thus shaft 47 is rotatably connected to the output shaft of the second drive member 46 via the drive belt. Slider 44 is connected to the output shaft of the first drive member 42 via a connector, which can be a rope, cable, or wire, but is not limited to these.

[0050] The first driving component 42 drives the connecting frame 45 to move the rotating shaft 47 and the rotor 48 relative to the connecting body 3 in the direction from the top to the bottom of the furnace body 1, so that the rotor 48 can be accommodated at the bottom of the lifting shaft 311 or detached from the lifting shaft 311. The first driving component 42 and the second driving component 46 can be motors or electric motors.

[0051] In the specific application of this application, the inner cavity 2 of the furnace body 1 is used to melt aluminum scrap such as solid aluminum ingots and aluminum coils. The furnace burner is activated to heat the solid aluminum ingots to a temperature that can melt them. After the solid aluminum ingots are melted into molten aluminum, they are transported to the lifting well 311 through the fifth channel 35. The first baffle 38 is opened and the second baffle 39 is closed, so that the first channel 31 is in a connected state and the second channel 32 is in a cut-off state. The lifting well 311 and the drive mechanism 4 form a mechanism similar to a centrifugal pump. The output shaft of the first drive member 42 rotates, driving the slider 44 to slide along the slide rail 43 via the connecting member. The slider 44 drives the connecting frame 45, which in turn drives the second drive member 46, the rotating shaft 47, and the rotor 48 to move relative to the connecting body 3 along the slide rail 43 in the direction from the top to the bottom of the furnace body 1. This allows the rotor 48 to be housed at the bottom of the lifting well 311. The second drive member 46 drives the rotating shaft 47 and the rotor 48 to rotate, transporting the high-temperature molten aluminum from the lifting well 311 to the mixing well 312 through the first channel 31, continuously forming a high-temperature molten aluminum vortex flow. Aluminum chips are then transported into the mixing well 312, where they mix with the high-temperature molten aluminum and melt into molten aluminum. Finally, the molten aluminum flows back to the inner cavity 2 of the furnace body 1 through the sixth channel 36, preventing the aluminum chips from being directly thrown from the furnace opening and coming into direct contact with the furnace flame, which would cause severe burning of the aluminum chips.

[0052] When the molten aluminum in the smelting furnace reaches the predetermined liquid level and needs to be discharged at a high level, the first baffle 38 can be closed and the second baffle 39 can be opened, so that the first channel 31 is cut off and the second channel 32 is connected. The molten aluminum is discharged from the smelting furnace through the second channel 32 as reserve material for the next process.

[0053] When the smelting furnace needs to be repaired, the plugs 310 on the third channel 33 and the fourth channel 34 can be pulled out to discharge the molten aluminum from the smelting furnace through the third channel 33 and the fourth channel 34 for the purpose of repairing the smelting furnace.

[0054] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A smelting furnace that reduces aluminum shavings burn-off and achieves high and low level discharge, characterized in that, include: Furnace body; A connecting body is installed on the outside of the furnace body. The connecting body has a lifting well, a mixing well, a first channel, a second channel, a third channel, and a fourth channel. The connecting body and the furnace body have a fifth channel and a sixth channel. The first channel connects the lifting well and the mixing well. One end of the second channel connects to the first channel and the other end passes through the connecting body. One end of the third channel connects to the lifting well and the other end passes through the connecting body. One end of the fourth channel connects to the mixing well and the other end passes through the connecting body. The fifth channel connects the lifting well and the inner cavity of the furnace body. The sixth channel connects the mixing well and the inner cavity of the furnace body. In the direction from the top to the bottom of the furnace body, the second channel is located above the third channel and the fourth channel. A drive mechanism is mounted on the connecting body, with a portion of the drive mechanism housed within the lifting well. The drive mechanism is used to transport molten aluminum from the lifting well to the mixing well.

2. The smelting furnace as described in claim 1, characterized in that, The connector also has a seventh channel, which connects the first channel and the mixing well. The seventh channel is vortex-shaped, and the cross-sectional dimensions of the seventh channel gradually decrease from the first channel to the mixing well.

3. The smelting furnace as described in claim 2, which reduces aluminum chip burn-off and achieves high and low level discharge, is characterized in that... The first channel, the third channel, and the fifth channel are respectively connected to the bottom of the lifting shaft.

4. The smelting furnace as described in claim 3, which reduces aluminum chip burn-off and achieves high and low level discharge, is characterized in that... The fourth and sixth channels are respectively connected to the bottom of the mixing well, and the seventh channel is connected between the bottom and the top of the mixing well.

5. A smelting furnace as described in claim 4, characterized in that, The upper part of the mixing well is also provided with a receiving hopper, which is used to transport aluminum chips to the mixing well.

6. A smelting furnace as described in claim 5, characterized in that, A first baffle is provided on the first channel. In the direction of aluminum liquid conveying, the first baffle is located in front of the connection between the first channel and the second channel. The relative position of the first baffle and the first channel is adjustable. The first baffle is used to control the opening or closing of the first channel.

7. A smelting furnace as described in claim 6, characterized in that, A second baffle is provided on the second channel. The relative position of the second baffle and the second channel is adjustable. The second baffle is used to control the connection or closure of the second channel.

8. A smelting furnace as described in claim 7, characterized in that, A plug is provided on the third channel and the fourth channel respectively, and each plug is used to control the connection or closure of the third channel and the fourth channel.

9. A smelting furnace as described in any one of claims 1-8, characterized in that, The drive mechanism includes a support frame, a first drive component, a slider, a connecting frame, a second drive component, a rotating shaft, and a rotor. The support frame has a slide rail and is mounted on the connecting body. The first drive component is mounted on the support frame. The slider is connected to the output shaft of the first drive component and is movably connected to the slide rail. The connecting frame is mounted on the slider. The second drive component is mounted on the connecting frame. The rotating shaft is rotatably mounted on the connecting frame and is rotatably connected to the output shaft of the second drive component. The rotor is mounted on the rotating shaft and can be housed at the bottom of the lifting shaft.

10. A smelting furnace as described in claim 9, characterized in that, The rotating shaft is rotatably connected to the output shaft of the second driving component via a transmission belt.

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