Refining-free aluminum melting furnace

Abstract

The invention relates to the technical field of aluminum melting furnaces, in particular to a refining-free aluminum melting furnace which comprises a furnace body, the furnace body is connected with a heat recovery mechanism, the furnace body is rotatably connected with a rotating frame, the rotating frame is connected with a hydraulic rod in a penetrating mode, the other end of the hydraulic rod is connected with a fixing seat, and the bottom end of the fixing seat is rotatably connected with a slag treatment mechanism. The transmission mechanism is fixedly connected into the fixing seat, the slag separation seat is fixedly connected to one side of the furnace body, after an aluminum alloy material is melted by the aluminum melting furnace, the slag treatment mechanism is arranged in the crucible, then floating slag is gathered towards the middle through the two rotating slag fishing frames, and the slag is separated from the furnace body through a closed body formed by the two slag fishing frames. Therefore, the furnace slag is treated, the purity and the uniformity of the aluminum alloy are improved, and the quality and the performance of a final casting or other aluminum products are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aluminum melting furnaces, in particular to a refining-free aluminum melting furnace. BACKGROUND

[0002] An aluminum melting furnace is a device used to heat aluminum and aluminum alloys to a melting temperature and perform casting or other processing. This device is very common in the aluminum processing industry and has a wide range of uses, including but not limited to:

[0003] Aluminum alloy casting: heating aluminum alloy raw materials to a high enough temperature to melt them and then casting them into a shape for the manufacture of automobile parts, aerospace parts, building materials, etc.

[0004] Aluminum alloy smelting and alloying: heating scrap aluminum or primary aluminum materials and mixing them with other alloying elements to produce aluminum alloy materials with specific properties.

[0005] Aluminum material recycling: heating scrap aluminum products or waste to the melting point to recover aluminum metal and use it for production again.

[0006] With increasing global concern for environmental protection and energy conservation, traditional aluminum melting furnaces face greater energy efficiency and environmental pressure. Traditional aluminum melting furnaces usually consume a large amount of energy and may release a large amount of carbon dioxide and other harmful gases during the smelting process, causing some burden to the environment. Therefore, developing green and low-carbon aluminum melting furnaces has become an important direction for the development of the aluminum processing industry.

[0007] The prior art document with publication number CN220489695U provides an aluminum melting furnace that can remove the crucible from the furnace body after opening the door, facilitating the removal of the crucible, and can heat the center of the crucible through the pipeline, improving the heating speed.

[0008] When the existing technology is used, after the aluminum alloy material is melted, some floating materials may appear on the surface of the aluminum liquid. These floating materials are usually formed by reaction residues, oxides, or other non-metallic impurities. The traditional aluminum melting furnace is not convenient for processing the floating slag on the aluminum liquid, which leads to a decrease in the quality of the aluminum alloy and negative effects on the forming process.

[0009] In summary, in the prior art, there is a lack of technology for processing the floating slag on the aluminum liquid in some aluminum melting furnaces. SUMMARY

[0010] The purpose of the present application is to solve the shortcomings in the background art and provide a refining-free aluminum melting furnace.

[0011] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a non-refining aluminum melting furnace, comprising a furnace body, a heat recovery mechanism connected to the furnace body, a rotating frame rotatably connected to the furnace body, a hydraulic rod penetratingly connected to the rotating frame, a fixed seat connected to the other end of the hydraulic rod, a slag processing mechanism rotatably connected to the bottom end of the fixed seat, a transmission mechanism fixedly connected inside the fixed seat, and a slag separation seat fixedly connected to one side of the furnace body.

[0012] Preferably, a crucible is installed and fixed inside the furnace body, and a hopper is installed outside the furnace body.

[0013] Preferably, the heat recovery mechanism includes a heat extraction pipe, which is connected to the furnace body. One end of the heat extraction pipe located inside the furnace body is threadedly connected to a flue gas filter pipe, and the other end of the heat extraction pipe is connected to a gas guide pipe. One end of the gas guide pipe is connected to the hopper, and the other end of the gas guide pipe is located above the slag separation seat. An exhaust fan is installed inside the gas guide pipe.

[0014] Preferably, the rotating frame is rotatably connected to a motor base, the motor base is fixedly connected to the furnace body, and a motor A is fixedly connected to one end of the rotating frame, with the motor A fixedly connected to the motor base.

[0015] Preferably, the slag handling mechanism includes a rotating column, on which two rotating rings are symmetrically connected and rotatably connected. A slag retrieval frame is fixedly connected to the rotating rings, and the outer wall of the slag retrieval frame is adapted to the inner wall of the crucible.

[0016] Preferably, a motor B is fixedly connected inside the rotating column, a drive wheel is fixedly connected to the output end of the motor B, and an annular rack A is fixedly connected to the rotating ring, with the drive wheel meshing with two annular racks A for transmission.

[0017] Preferably, the transmission mechanism includes a motor C, which is fixedly connected to the inner wall of the fixed base. A worm gear is fixedly connected to the output end of the motor C. The worm gear is fixedly connected to a rotating column. A worm wheel meshes with one side of the worm gear. The worm wheel is rotatably connected to the inner wall of the fixed base. A drive wheel is fixedly connected to one end of the worm wheel.

[0018] Preferably, a driven wheel is engaged with one side of the driving wheel, and the driven wheel is rotatably connected to the fixed seat through a pin. An electric actuator is fixedly connected to the outer end of the pin, and a transmission wheel is fixedly connected to the other end of the electric actuator.

[0019] Preferably, a return pipe is fixedly connected to the bottom end of the slag separation seat, and the return pipe communicates with the furnace body. A fixing frame is fixedly connected to the bottom end of the slag separation seat, and the fixing frame is fixedly connected to the furnace body. A slag filter bucket is placed inside the slag separation seat. A baffle ring is fixedly connected to the slag filter bucket, and an annular rack B is fixedly connected to the baffle ring. Multiple rollers are rotatably connected to the bottom of the upper end of the slag filter bucket.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. After the aluminum alloy material is melted in the aluminum melting furnace, the slag treatment mechanism is placed in the crucible, and then two rotating slag scooping frames are used to gather the floating slag towards the center. The slag is treated by the closed body formed by the two slag scooping frames, which helps to improve the purity and uniformity of the aluminum alloy and ensure the quality and performance of the final castings or other aluminum products.

[0022] 2. After the slag is removed from the molten aluminum, the transmission mechanism can drive the slag processing mechanism to rotate, so that the molten aluminum and slag attached to the slag processing mechanism can be fully thrown off, ensuring the cleanliness of the slag processing mechanism. At the same time, it will drive the slag filter bucket to rotate, separating the slag, so that the molten aluminum can be recycled through the return pipe to avoid waste.

[0023] 3. By setting up a heat recovery mechanism, waste heat can be used to preheat new materials entering the furnace, which can significantly improve energy efficiency and reduce production costs. The flue gas filter can filter particulate matter in high-temperature flue gas, realizing the energy-saving and environmentally friendly effects of the device. Attached Figure Description

[0024] Figure 1 This is a cross-sectional schematic diagram of the overall structure of the aluminum melting furnace without refining according to the present invention during slag treatment;

[0025] Figure 2 This is a cross-sectional view of the overall structure of the aluminum melting furnace without refining according to the present invention during slag separation;

[0026] Figure 3 This is a cross-sectional schematic diagram of the furnace body structure of a non-refining aluminum melting furnace according to the present invention;

[0027] Figure 4 This is a schematic diagram of the rotating frame structure of a non-refining aluminum melting furnace according to the present invention;

[0028] Figure 5 This is a cross-sectional view of the heat recovery mechanism of a non-refining aluminum melting furnace according to the present invention.

[0029] Figure 6 This is a cross-sectional view of the slag treatment mechanism of a non-refining aluminum melting furnace according to the present invention.

[0030] Figure 7 This is a cross-sectional schematic diagram of the transmission mechanism and other structures of a non-refining aluminum melting furnace according to the present invention;

[0031] Figure 8 This is a cross-sectional view of the slag separation seat structure of a non-refining aluminum melting furnace according to the present invention.

[0032] 1. Furnace body; 2. Heat recovery mechanism; 3. Rotating frame; 4. Hydraulic rod; 5. Fixed base; 6. Slag handling mechanism; 7. Transmission mechanism; 8. Slag separation seat; 101. Crucible; 102. Hopper; 201. Heat extraction pipe; 202. Flue gas filter pipe; 203. Gas guide pipe; 204. Exhaust fan; 301. Motor base; 302. Motor A; 601. Rotating column; 602. Rotating ring; 603. 604. Slag retrieval frame; 605. Motor B; 606. Drive wheel; 607. Ring rack A; 701. Motor C; 702. Worm gear; 703. Worm wheel; 704. Driving wheel; 705. Driven wheel; 706. Electric actuator; 707. Transmission wheel; 801. Return pipe; 802. Fixed frame; 803. Slag filter barrel; 804. Material retaining ring; 805. Ring rack B; 806. Roller. Detailed Implementation

[0033] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0034] like Figures 1-8 The aluminum melting furnace shown includes a furnace body 1, a heat recovery mechanism 2 connected to the furnace body 1, a rotating frame 3 rotatably connected to the furnace body 1, a hydraulic rod 4 penetrating the rotating frame 3, a fixed seat 5 connected to the other end of the hydraulic rod 4, a slag treatment mechanism 6 rotatably connected to the bottom end of the fixed seat 5, a transmission mechanism 7 fixedly connected inside the fixed seat 5, and a slag separation seat 8 fixedly connected to one side of the furnace body 1.

[0035] like Figure 3 As shown, a crucible 101 is installed and fixed inside the furnace body 1, and a hopper 102 is installed on the outside of the furnace body 1.

[0036] like Figure 5As shown, the heat recovery mechanism 2 includes a heat extraction pipe 201, which is connected to the furnace body 1. One end of the heat extraction pipe 201, located inside the furnace body 1, is threadedly connected to a flue gas filter pipe 202. The other end of the heat extraction pipe 201 is connected to a gas guide pipe 203. One end of the gas guide pipe 203 is connected to the inside of the hopper 102, and the other end of the gas guide pipe 203 is located above the slag separation seat 8. An exhaust fan 204 is installed inside the gas guide pipe 203. The gas guide pipe 203 preheats the aluminum material while ensuring that the molten aluminum on the slag processing mechanism 6 and inside the slag separation seat 8 remains liquid, facilitating detachment and separation for recovery.

[0037] The high-temperature flue gas generated by the device is drawn into the heat extraction pipe 201 by the exhaust fan 204. It is then filtered through the flue gas filter pipe 202 and injected into the hopper 102 through the gas guide pipe 203 to preheat the aluminum material. This process significantly improves energy utilization efficiency and reduces dependence on external energy sources. Injecting the recovered hot gas into the hopper 102 through the gas guide pipe 203 further reduces energy consumption for heating the aluminum, increases melting efficiency, and further reduces the overall energy consumption of the aluminum melting process. Because heat recovery technology effectively utilizes waste heat within the furnace, it reduces energy consumption in traditional aluminum melting processes, thereby reducing greenhouse gas emissions and meeting green and low-carbon environmental protection requirements. This not only reduces emissions of greenhouse gases such as carbon dioxide but also makes the aluminum melting process more environmentally friendly.

[0038] The gas guide pipe 203 guides waste heat to the area above the slag separation seat 8, ensuring that the molten aluminum inside the slag separation seat 8 remains within a suitable temperature range during the slag separation process. This prevents the molten aluminum from solidifying and facilitates the separation and recovery of the molten aluminum. This ensures the quality of the molten aluminum, improves recovery efficiency, and maintains the temperature to facilitate the separation of molten aluminum from the slag, avoiding aluminum loss and thus increasing resource recovery rate and reducing waste. The exhaust fan 204 draws high-temperature flue gas into the heat extraction pipe 201 for treatment, effectively discharging the high-temperature gases generated within the furnace body 1, preventing overheating of the furnace body 1, and improving the safety and stability of the equipment. The exhaust fan 204 also effectively discharges high-temperature flue gas, preventing temperature imbalances in the furnace body 1, thereby improving the stability of the aluminum melting process and ensuring operational safety.

[0039] like Figure 4 As shown, a motor base 301 is rotatably connected to the rotating frame 3. The motor base 301 is fixedly connected to the furnace body 1. A motor A302 is fixedly connected to one end of the rotating frame 3, and the motor A302 is fixedly connected to the motor base 301. The rotating frame 3 drives the slag processing mechanism 6 to adjust its position. The rotating frame 3 is driven by the motor A302 to rotate, so that the rotating frame 3 drives the slag processing mechanism 6 to be positioned above the crucible 101.

[0040] like Figure 6As shown, the slag handling mechanism 6 includes a rotating column 601, on which two rotating rings 602 are symmetrically connected and rotatably mounted. A slag retrieval frame 603 is fixedly connected to each rotating ring 602, and the outer wall of the slag retrieval frame 603 is adapted to the inner wall of the crucible 101. The slag retrieval frame 603 collects floating slag.

[0041] A motor B604 is fixedly connected inside the rotating column 601. A drive wheel 605 is fixedly connected to the output end of the motor B604. A ring rack A606 is fixedly connected to the rotating ring 602. The drive wheel 605 meshes with the two ring racks A606 for transmission. The drive wheel 605 drives the separation and merging of the two slag retrieval frames 603. The hydraulic rod 4 drives the slag handling mechanism 6 to contact the molten aluminum. Then, the motor B604 drives the drive wheel 605 to rotate, which in turn drives the rotating ring 602 connected to the ring rack A606 to rotate. This causes the rotating ring 602 to drive the connected slag retrieval frames 603 to rotate, bringing the two slag retrieval frames 603 closer together to form a whole, thus gathering the slag together to complete the retrieval.

[0042] After the aluminum alloy material is melted in the aluminum melting furnace, the slag treatment mechanism 6 is placed in the crucible 101, and then the floating slag is gathered to the center by two rotating slag scooping frames 603. The slag is treated by the closed body formed by the two slag scooping frames 603, which helps to improve the purity and uniformity of the aluminum alloy and ensure the quality and performance of the final casting or other aluminum products.

[0043] like Figure 7 As shown, the transmission mechanism 7 includes a motor C701, which is fixedly connected to the inner wall of the fixed base 5. A worm gear 702 is fixedly connected to the output end of the motor C701. The worm gear 702 is fixedly connected to the rotating column 601. A worm wheel 703 is meshed with one side of the worm gear 702. The worm wheel 703 is rotatably connected to the inner wall of the fixed base 5. A drive wheel 704 is fixedly connected to one end of the worm wheel 703. The worm gear 702 drives the slag processing mechanism 6 to rotate and clean itself.

[0044] A driven wheel 705 is engaged with one side of the driving wheel 704. The driven wheel 705 is rotatably connected to the fixed base 5 through a pin. An electric actuator 706 is fixedly connected to the outer end of the pin, and a transmission wheel 707 is fixedly connected to the other end of the electric actuator 706. The transmission wheel 707 drives the slag filter barrel 803 to rotate and separate. The slag scooping frame 603 is placed inside the slag separation seat 8, and the two slag scooping frames 603 are separated. At this time, the electric actuator 706 drives the transmission wheel 707 to mesh with the ring rack B805. Then, the motor C701 drives the worm gear 702 to rotate, which in turn drives the slag processing mechanism 6 to rotate, causing the aluminum liquid and slag attached to the slag processing mechanism 6 to be thrown off. At this time, the worm gear 702 drives the drive wheel 704 connected to the worm wheel 703 to rotate, which in turn drives the driven wheel 705 to rotate, thereby driving the transmission wheel 707 to rotate, causing the slag filter bucket 803 to rotate and separate.

[0045] like Figure 7 , Figure 8 As shown, a return pipe 801 is fixedly connected to the bottom of the slag separation seat 8, and the return pipe 801 communicates with the inside of the furnace body 1. A fixing frame 802 is fixedly connected to the bottom of the slag separation seat 8, and the fixing frame 802 is fixedly connected to the furnace body 1. A slag filter bucket 803 is placed inside the slag separation seat 8, and a baffle ring 804 is fixedly connected inside the slag filter bucket 803. A ring-shaped rack B805 is fixedly connected to the baffle ring 804. Multiple rollers 806 are rotatably connected to the bottom of the upper end of the slag filter bucket 803. Advantages of the baffle ring 804: Prevents overflow: The main function of the baffle ring 804 is to prevent aluminum liquid and slag from overflowing during the smelting process, ensuring that the substances inside the furnace body 1 do not leak into the external environment, thereby avoiding pollution and loss. Protects equipment: The baffle ring 804 can effectively isolate slag and aluminum liquid, preventing them from directly contacting the furnace body 1 and other related equipment, reducing corrosion and wear on the furnace body 1, and improving the service life of the equipment. Improved operational safety: The presence of the 804 retaining ring can effectively prevent the spillage of high-temperature liquids, reducing safety risks to workers and equipment during operation.

[0046] Advantages of roller 806: Reduced friction: Roller 806, located on the rotating part of the slag filter bucket 803, effectively reduces the friction between the slag filter bucket 803 and the fixed structure during rotation. This makes the rotation of the slag filter bucket 803 smoother, reducing energy consumption and mechanical wear. Improved rotational efficiency of the slag filter bucket 803: By reducing friction, roller 806 improves the rotational efficiency of the slag filter bucket 803, making it more efficient during slag cleaning or replacement operations, shortening operation time, and increasing production efficiency. Reduced wear and extended service life: The roller 806 reduces wear when the slag filter bucket 803 comes into contact with other components, reducing frequent maintenance and replacement, thereby extending the service life of the entire equipment. Reduced vibration and noise: Roller 806 effectively buffers the vibration and noise generated during the rotation of the slag filter bucket 803, providing a more stable and quiet working environment.

[0047] When aluminum needs to be melted, the aluminum in the hopper 102 is placed in the crucible 101 for heating and melting. At this time, the high-temperature flue gas generated by the device is drawn into the heat extraction pipe 201 by the exhaust fan 204. The flue gas is then filtered through the flue gas filter pipe 202 and then injected into the hopper 102 through the gas guide pipe 203 to preheat the aluminum, which can accelerate the melting of the aluminum.

[0048] After the aluminum is completely melted, some floating matter will appear on the surface of the molten aluminum. At this time, the rotating frame 3 is driven by the motor A302 to rotate, so that the rotating frame 3 drives the slag handling mechanism 6 to be placed above the crucible 101. Then, the hydraulic rod 4 drives the slag handling mechanism 6 to contact the molten aluminum. Then, the motor B604 drives the drive wheel 605 to rotate, which in turn drives the rotating ring 602 connected to the ring rack A606 to rotate. This causes the rotating ring 602 to drive the connected slag retrieval frame 603 to rotate, so that the two slag retrieval frames 603 rotate closer to each other and form a whole, gathering the slag together to complete the retrieval.

[0049] Then, the slag scooping frame 603 is placed in the slag separation seat 8, and the two slag scooping frames 603 are separated. At this time, the electric push rod 706 drives the transmission wheel 707 to mesh with the ring rack B805. Then, the motor C701 drives the worm 702 to rotate, so that the worm 702 drives the slag processing mechanism 6 to rotate, so that the aluminum liquid and slag attached to the slag processing mechanism 6 are thrown off. At this time, the worm 702 drives the drive wheel 704 connected to the worm wheel 703 to rotate, so that the drive wheel 704 drives the driven wheel 705 to rotate, thereby driving the transmission wheel 707 to rotate, and driving the slag filter bucket 803 to rotate and separate.

[0050] Meanwhile, the high-temperature gas ejected through the gas guide pipe 203 will ensure that the aluminum liquid remains in a liquid state, and then the separated aluminum liquid will flow back into the crucible 101 through the return pipe 801 for recycling.

[0051] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A non-refining aluminum melting furnace, comprising a furnace body (1), characterized in that: A heat recovery mechanism (2) is connected to the furnace body (1). A rotating frame (3) is rotatably connected to the furnace body (1). A hydraulic rod (4) is connected through the rotating frame (3). A fixed seat (5) is connected to the other end of the hydraulic rod (4). A slag processing mechanism (6) is rotatably connected to the bottom end of the fixed seat (5). A transmission mechanism (7) is fixedly connected inside the fixed seat (5). A slag separation seat (8) is fixedly connected to one side of the furnace body (1).

2. The aluminum melting furnace without refining according to claim 1, characterized in that: A crucible (101) is installed and fixed inside the furnace body (1), and a hopper (102) is installed on the outside of the furnace body (1).

3. The aluminum melting furnace without refining according to claim 2, characterized in that: The heat recovery mechanism (2) includes a heat extraction pipe (201), which is connected to the furnace body (1). One end of the heat extraction pipe (201) located inside the furnace body (1) is threadedly connected to a flue gas filter pipe (202), and the other end of the heat extraction pipe (201) is connected to a gas guide pipe (203). One end of the gas guide pipe (203) is connected to the hopper (102), and the other end of the gas guide pipe (203) is located above the slag separation seat (8). An exhaust fan (204) is installed inside the gas guide pipe (203).

4. The aluminum melting furnace without refining according to claim 1, characterized in that: The rotating frame (3) is rotatably connected to a motor base (301), the motor base (301) is fixedly connected to the furnace body (1), and a motor A (302) is fixedly connected to one end of the rotating frame (3), the motor A (302) is fixedly connected to the motor base (301).

5. The aluminum melting furnace without refining according to claim 2, characterized in that: The slag processing mechanism (6) includes a rotating column (601), on which two rotating rings (602) are symmetrically connected and fixedly connected. A slag retrieval frame (603) is fixedly connected to the rotating ring (602), and the outer wall of the slag retrieval frame (603) is adapted to the inner wall of the crucible (101).

6. The aluminum melting furnace without refining according to claim 5, characterized in that: A motor B (604) is fixedly connected inside the rotating column (601), and a drive wheel (605) is fixedly connected to the output end of the motor B (604). A ring rack A (606) is fixedly connected to the rotating ring (602), and the drive wheel (605) meshes with the two ring racks A (606) for transmission.

7. The aluminum melting furnace without refining according to claim 6, characterized in that: The transmission mechanism (7) includes a motor C (701), which is fixedly connected to the inner wall of the fixed base (5). A worm (702) is fixedly connected to the output end of the motor C (701). The worm (702) is fixedly connected to the rotating column (601). A worm wheel (703) is meshed with one side of the worm (702). The worm wheel (703) is rotatably connected to the inner wall of the fixed base (5). A drive wheel (704) is fixedly connected to one end of the worm wheel (703).

8. The aluminum melting furnace without refining according to claim 7, characterized in that: The driving wheel (704) is engaged with a driven wheel (705) on one side. The driven wheel (705) is rotatably connected to the fixed seat (5) through a pin. An electric push rod (706) is fixedly connected to the outer end of the pin. A transmission wheel (707) is fixedly connected to the other end of the electric push rod (706).

9. The aluminum melting furnace without refining according to claim 8, characterized in that: A return pipe (801) is fixedly connected to the bottom of the slag separation seat (8), and the return pipe (801) is connected to the furnace body (1). A fixing frame (802) is fixedly connected to the bottom of the slag separation seat (8), and the fixing frame (802) is fixedly connected to the furnace body (1). A slag filter barrel (803) is placed inside the slag separation seat (8), and a baffle ring (804) is fixedly connected inside the slag filter barrel (803). A ring rack B (805) is fixedly connected to the baffle ring (804). Multiple rollers (806) are rotatably connected to the bottom of the upper end of the slag filter barrel (803).

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