All-electric isothermal melting and holding furnace

Abstract

The present invention relates to the technical field of melting and casting furnaces, and discloses a fully electric isothermal melting and holding furnace, comprising a steel structure for an equipment shell, a lining is arranged inside the steel structure for an equipment shell, a circulating pumping area is arranged in the middle of the steel structure for an equipment shell and the lining, an aluminum liquid transfer bag is arranged on the left side of the steel structure for an equipment shell, an aluminum liquid drain port is arranged on the rear side outer wall of the steel structure for an equipment shell, a channel baffle is arranged inside the steel structure for an equipment shell, the outer wall of the channel baffle is slidably connected to the inside of an overflow channel, and a drain flow channel blocking mechanism is arranged on the left side outer wall of the steel structure for an equipment shell. Through the unique design and heating method of the device, the aluminum alloy is melted rapidly under the condition of uniform temperature, and the melting efficiency and working efficiency are improved. The isothermal melting furnace adopts an advanced temperature control system, which can monitor and adjust the melting temperature in real time to ensure the melting quality and uniformity of the aluminum alloy.

Description

Technical Field

[0001] The invention relates to the technical field of melting and casting furnaces, in particular to a full-electric isothermal melting and holding furnace. Background Art

[0002] The all-electric isothermal melting and holding furnace is an industrial equipment used in the constant temperature melting process. Its main function is to keep the molten metal, alloy or other substances at a high temperature to prevent the temperature from decreasing during the melting process, thereby ensuring the good fluidity, uniformity and stability of the material.

[0003] With the continuous advancement of my country's industrialization, the demand for aluminum and its alloys has gradually increased. However, the traditional smelting method has problems such as unstable furnace temperature, low furnace efficiency, large smelting loss, and energy waste. There is an urgent need for a new smelting technology that can improve production efficiency and reduce energy consumption.

[0004] The temperature control technology of traditional melting furnaces is relatively backward, mostly relying on manual operation, lacking precise real-time monitoring and automatic adjustment functions, and often cannot meet the requirements of modern industry for high-quality and high-efficiency production. At the same time, the energy utilization rate of traditional melting equipment is low, the heating energy consumption is high, and more pollutants may be generated during operation, which is not in line with the development direction of green environmental protection. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides an all-electric isothermal melting and holding furnace to solve the problems of low efficiency and low energy utilization rate of traditional melting equipment, high heating energy consumption, and the possibility of generating more pollutants during operation, which is not in line with the development direction of green environmental protection.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an all-electric isothermal melting and holding furnace, comprising an equipment shell steel structure, an inner lining is arranged inside the equipment shell steel structure, a circulating pumping area is arranged in the middle of the equipment shell steel structure and the inner lining, a heating area is arranged in the middle of the inner lining, an aluminum melting area is arranged inside the inner lining, a temperature supplement area is arranged inside the inner lining, the aluminum melting area and the temperature supplement area are connected by an overflow channel, a degassing area is arranged inside the inner lining, a soup taking area is arranged inside the inner lining, and the A feeding area is arranged inside the lining, an aluminum liquid transfer bag is arranged on the left side outside of the equipment casing steel structure, an aluminum liquid drain is arranged on the rear outer wall of the equipment casing steel structure, the aluminum liquid drain is arranged with a through hole, the aluminum liquid drain is connected to the inside of the aluminum melting area through the through hole, a solid aluminum alloy feeder is arranged on the outer wall of the equipment casing steel structure, a channel baffle is arranged inside the equipment casing steel structure, the outer wall of the channel baffle is slidably connected to the inside of the overflow channel, and a water discharge flow channel blocking mechanism is arranged on the left outer wall of the equipment casing steel structure.

[0007] Preferably, the circulation pumping area includes a movable furnace cover, the outer wall of the movable furnace cover is detachably mounted on the inner wall of the liner, and the circulation pump body is arranged on the middle upper surface of the movable furnace cover.

[0008] Preferably, the heating area includes a heating zone furnace cover, which is detachably mounted on the inner wall of the lining, and one side outer wall of the heating zone furnace cover is fixedly connected to the outer wall of the movable furnace cover, and a smelting heater is arranged inside the heating zone furnace cover, and the smelting heaters are arranged in multiple groups in a rectangular distribution.

[0009] Preferably, the aluminum melting area includes an aluminum melting zone furnace cover, the outer wall of the aluminum melting zone furnace cover is detachably mounted on the inner wall of the lining, the outer wall of the aluminum melting zone furnace cover is fixedly connected to the inner wall of the equipment casing steel structure, the inner wall of the aluminum melting zone furnace cover is arranged on the outer wall of the smelting heater, the inner wall of the aluminum melting zone furnace cover is provided with a burner, the upper side of the aluminum melting zone furnace cover is provided with an aluminum melting zone slag removal cover, and the outer wall of the aluminum melting zone furnace cover is in contact with the outer wall of the heating zone furnace cover.

[0010] Preferably, the temperature compensation area includes a temperature compensation area furnace cover, the outer wall of the temperature compensation area furnace cover can be removably installed on the inner wall of the equipment shell steel structure, the inner wall of the temperature compensation area furnace cover is provided with a temperature compensation heater, and the outer wall of the temperature compensation area furnace cover is in contact with the outer wall of the aluminum melting area furnace cover.

[0011] Preferably, the degassing area includes a degassing area furnace cover, the outer wall of the degassing area furnace cover can be detachably mounted on the inner wall of the equipment casing steel structure, the outer wall of the degassing area furnace cover is in contact with the outer wall of the heating area furnace cover, and the outer wall of the degassing area furnace cover is in contact with the outer wall of the aluminum melting area furnace cover.

[0012] Preferably, a soup mixing trough is provided on the upper left side of the degassing zone furnace cover, a degassing zone slag removal cover is provided on the lower left side of the degassing zone furnace cover, and a degassing rotor drive is provided in the middle of the degassing zone furnace cover.

[0013] Preferably, the soup taking area includes a soup taking area furnace cover, the outer wall of the soup taking area furnace cover is detachably mounted on the inner wall of the equipment housing steel structure, a compensatory temperature heater is arranged in the middle of the soup taking area furnace cover, and the compensatory temperature heaters are arranged in two groups and are laterally distributed, and a filter plate is fixedly connected to the upper surface of the soup taking area furnace cover.

[0014] Preferably, a molten soup temperature measuring thermocouple is arranged on the upper surface of the furnace cover of the soup taking area, a laser liquid level sensor is arranged inside the furnace cover of the soup taking area, a water discharge diversion groove is arranged inside the left side of the soup taking area, and the water discharge diversion groove is arranged on the upper part of the aluminum liquid transfer bag.

[0015] Preferably, the feeding area includes a feeding area furnace cover, the outer wall of the feeding area furnace cover can be detachably installed inside the equipment shell steel structure, the left outer wall of the feeding area furnace cover is in contact with the right outer wall of the soup taking area furnace cover, the right outer wall of the feeding area furnace cover is in contact with the left outer wall of the movable furnace cover, the rear side of the feeding area furnace cover is in contact with the front outer wall of the aluminum melting area furnace cover, the feeding area includes a feeding area furnace cover, the outer wall of the feeding area furnace cover can be detachably installed inside the equipment shell steel structure, the left outer wall of the feeding area furnace cover is in contact with the soup taking area furnace cover The right outer wall of the cover is in contact with each other, the right outer wall of the feeding area furnace cover is in contact with the left outer wall of the movable furnace cover, the rear side of the feeding area furnace cover is in contact with the front outer wall of the aluminum melting area furnace cover, a vortex-free feeding chamber is arranged inside the feeding area, the vortex-free feeding chamber includes a feeding chamber baffle, the outer wall of the feeding chamber baffle is fixedly connected to the inside of the feeding area, the inside of the feeding chamber baffle is provided with a feeding chamber side and a feeding chamber front, an aluminum liquid inlet is arranged on the right side of the feeding chamber baffle, and an aluminum liquid outlet is arranged on the rear side of the feeding chamber baffle.

[0016] Working principle: When the equipment is started, the outer shell steel structure and its internal lining are heated and preheated under the action of the burner, so that each area of ​​the equipment reaches a suitable working temperature and plays a preheating effect during use. After the preheating is completed, a small amount of initial molten aluminum is injected through the aluminum liquid drain port to immerse the hot end of the smelting heater to provide a heat source guarantee for subsequent smelting. The solid aluminum material is fed into the feeding area through the solid aluminum alloy feeder. The aluminum material is preheated by the furnace cover of the feeding area and flows into the aluminum melting area. In the aluminum melting area, the smelting heater quickly melts the aluminum material through immersion heating. At the same time, the circulating pump body pushes the aluminum liquid to flow in the circulating pumping area and each area to ensure uniform temperature and composition; During the smelting process, the slag produced is removed through the aluminum melting zone slag cover to keep the aluminum liquid pure. The molten aluminum liquid enters the supplementary heating area through the channel baffle, where the supplementary heating heater performs secondary heating on the aluminum liquid to maintain a constant temperature; at the same time, the laser liquid level sensor monitors the liquid level in real time, and the fitting design of the supplementary heating zone furnace cover and the aluminum melting zone furnace cover further prevents heat loss. The aluminum liquid after supplementary heating flows into the degassing area, and the degassing rotor drives the high-speed rotation to disperse nitrogen or argon to generate tiny bubbles. These bubbles react with hydrogen and inclusions in the aluminum liquid and bring impurities to the surface. They are cleaned by the degassing zone slag cover, which significantly improves the purity of the aluminum liquid, thereby achieving a rapid degassing effect during use; After degassing, the aluminum liquid enters the soup extraction area, and the filter plate further filters the residual impurities. The molten soup temperature thermocouple monitors the temperature of the aluminum liquid to make the temperature meet the casting process requirements. The supplementary heating heater keeps the temperature stable, and the treated aluminum liquid flows into the aluminum liquid transfer bag through the water discharge diversion trough for subsequent casting. When there is still residual material in the equipment, the aluminum liquid returns to the aluminum melting area through the circulation pump body to complete the circulation smelting operation. During use, the entire equipment can be automatically adjusted by the PLC intelligent control system. The heater power, liquid level height and degassing operation time are adjusted in real time through feedback from laser liquid level sensors, molten soup temperature thermocouples, etc. The detachable design of the furnace covers in each area, the furnace cover in the supplementary heating area, etc. facilitates maintenance and operation. Through efficient regional distribution and heat management, combined with safety protection designs such as leakage protection function and furnace cover sealing, the equipment achieves the goals of high efficiency, energy saving and environmental protection in aluminum alloy smelting during use. The present invention provides an all-electric isothermal melting and holding furnace. It has the following beneficial effects: 1. The present invention uses a unique design of the device and a heating method to enable the aluminum alloy to melt rapidly under uniform temperature conditions, thereby improving the smelting efficiency and work efficiency. The isothermal smelting furnace adopts a temperature control system that can monitor and adjust the smelting temperature in real time, which has the effect of improving the smelting quality and uniformity of the aluminum alloy.

[0017] 2. During the smelting process of the isothermal smelting furnace of the present invention, due to the precise control of temperature and energy, the energy consumption is lower than that of traditional smelting equipment, which is beneficial to energy saving. The charge can be heated in three dimensions without forming a temperature gradient, thereby achieving the effect of making the melt temperature uniform and the composition uniform.

[0018] 3. The present invention is designed with a vortex-free feeding chamber to avoid air being drawn into the aluminum liquid and forming too many oxides. As a result, the quality of the melt is greatly improved, the thermal efficiency of the immersion heater is >98%, the melting loss is small, no pollutants are emitted, the melting workshop is pollution-free, the air is fresh, there is no greenhouse gas carbon emission, it is conducive to reducing environmental pollution, and the floor area is small, which is only equivalent to 1 / 5 of the floor area of ​​a conventional reverberatory melting furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A perspective view of the present invention; Figure 2 It is a partial schematic diagram of the furnace cover in the charging area of ​​the present invention; Figure 3 It is a partial schematic diagram of the liner of the present invention; Figure 4 It is a partial schematic diagram of the movable furnace cover of the present invention; Figure 5 It is a schematic diagram of each internal area of ​​the present invention; Figure 6 It is a partial schematic diagram of the baffle of the feeding chamber of the present invention; Figure 7 It is a partial schematic diagram of the side of the feeding chamber of the present invention.

[0020] Among them, 1. Equipment shell steel structure; 2. Lining; 3. Heating zone furnace cover; 4. Aluminum melting zone furnace cover; 5. Feeding zone furnace cover; 6. Movable furnace cover; 7. Supplementary heating zone furnace cover; 8. Degassing zone furnace cover; 9. Soup extraction zone furnace cover; 10. Aluminum melting zone slag removal cover; 11. Degassing zone slag removal cover; 12. Soup preparation flow channel; 13. Drainage guide channel; 14. Aluminum liquid drain port; 15. Laser liquid level sensor; 16. Molten soup temperature measurement thermocouple; 17. Filter plate; 18. Degassing rotor drive; 19. Supplementary heating heater; 20. Melting heater; 21. Circulation pump body; 22. Burner; 23. Channel baffle; 24. Drain trough blocking mechanism; 25. Aluminum liquid transfer bag; 26. Solid aluminum alloy feeder; 27. Circulation pumping area; 28. Heating area; 29. ​​Aluminum melting area; 30. Feeding area; 31. Temperature supplement area; 32. Degassing area; 33. Soup extraction area; 34. Feeding chamber baffle; 35. Feeding chamber front; 36. Feeding chamber side; 37. Aluminum liquid outlet; 38. Aluminum liquid inlet. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Please see attached Figure 1 -Attached Figure 5 The embodiment of the present invention provides an all-electric isothermal melting and holding furnace, comprising an equipment shell steel structure 1, an inner lining 2 is arranged inside the equipment shell steel structure 1, a circulating pumping area 27 is arranged in the middle of the equipment shell steel structure 1 and the inner lining 2, a heating area 28 is arranged in the middle of the inner lining 2, an aluminum melting area 29 is arranged inside the inner lining 2, a supplementary temperature area 31 is arranged inside the inner lining 2, the aluminum melting area 29 and the supplementary temperature area 31 are connected by an overflow channel, a degassing area 32 is arranged inside the inner lining 2, a soup taking area 33 is arranged inside the inner lining 2, and a A feeding area 30 is provided, and an aluminum liquid transfer bag 25 is arranged on the left side of the equipment casing steel structure 1. A aluminum liquid drain port 14 is arranged on the rear outer wall of the equipment casing steel structure 1. The aluminum liquid drain port 14 is provided with a through hole. The aluminum liquid drain port 14 is connected to the inside of the aluminum melting area 29 through the through hole. A solid aluminum alloy feeder 26 is arranged on the outer wall of the equipment casing steel structure 1. A channel baffle 23 is arranged inside the equipment casing steel structure 1. The outer wall of the channel baffle 23 is slidably connected to the inside of the overflow channel. A water discharge channel blocking mechanism 24 is arranged on the left outer wall of the equipment casing steel structure 1.

[0023] Specifically, the interior of the equipment shell steel structure 1 is provided with an inner lining 2, which is made of non-stick aluminum and heavy castables that are resistant to aluminum liquid penetration, providing good heat resistance and aluminum liquid anti-seepage effect. At the same time, fiber cloth containing high-temperature metal wires and super thermal insulation boards are laid in the middle of the insulation layer to reduce the surface temperature of the furnace body and optimize the working environment. A circulating pumping area 27 is opened in the middle of the equipment shell steel structure 1 and the inner lining 2. The circulating pumping area 27 circulates the aluminum liquid efficiently by installing a circulating pump body 21, so that the aluminum liquid maintains fluidity and temperature uniformity between various functional areas in the furnace. A heating area 28 is provided in the middle of the inner lining 2. The area 28 is equipped with an immersion resistance heater, a temperature compensation heater 19 and a smelting heater 20, which provide efficient heating, with a thermal efficiency of more than 98%, high temperature control accuracy, and stability of aluminum liquid melting and heat preservation. The inner lining 2 is provided with an aluminum melting area 29, which is used for the melting process of solid aluminum alloy. By combining the solid aluminum alloy feeder 26 in the feeding area 30, solid aluminum material is continuously input into the aluminum melting area 29, and the aluminum melt is uniformly circulated under the action of the circulating pumping area 27. The inner lining 2 is provided with a temperature compensation area 31, and liquid is transported through the overflow channel between the aluminum melting area 29. A channel baffle 23 is provided in the overflow channel, and the baffle adjusts the flow of aluminum liquid between different areas through a sliding connection to ensure the liquid flow rate and liquid level control accuracy. The inner liner 2 is also provided with a degassing area 32, which is equipped with a degassing rotor drive 18 and a filter plate 17. Impurities and hydrogen are removed from the aluminum liquid through the reaction of small bubbles with the aluminum liquid to make the aluminum liquid purer. A soup taking area 33 is provided at the bottom of the inner liner 2. After being processed, the aluminum liquid enters the soup taking area 33 and finally flows out through the aluminum liquid drain port 14. During use, the efficient insulation design of the lining 2 is combined with the synergistic effect of the immersion heater and the circulation pump to significantly improve the smelting efficiency and temperature uniformity of the aluminum liquid, effectively reduce energy consumption and smelting losses, and the linkage control of the overflow channel, the channel baffle 23 and the circulation pump achieves precise flow and level control of the aluminum liquid, and the process requirements of each functional area improve the automation level of the equipment. At the same time, the efficient degassing devices in the degassing area 32, such as the filter plate 17 and the degassing rotor, remove impurities and hydrogen, improve the purity of the aluminum melt, and provide high-quality raw materials for casting. The design of the aluminum liquid drain port 14 and the drain flow channel blocking mechanism 24 ensures the sealing and safety of the aluminum liquid during the discharge process, preventing aluminum liquid leakage or operation risks.

[0024] Please see attached Figure 2 -Attached Figure 5 The circulation pumping area 27 includes a movable furnace cover 6 , the outer wall of which is detachably mounted on the inner wall of the liner 2 , and a circulation pump body 21 is provided on the middle upper surface of the movable furnace cover 6 .

[0025] Specifically, the detachable design of the movable furnace cover 6 facilitates the inspection and maintenance of the equipment. When the circulating pump needs to be cleaned, replaced or maintained, the furnace cover can be quickly opened without disassembling the entire furnace body, thereby reducing downtime and improving work efficiency. The sealing performance of the movable furnace cover 6 isolates the circulating pumping area 27 from the external environment, preventing the heat loss of the aluminum liquid, and at the same time improving the overall thermal insulation performance of the furnace body. The upper installation method of the circulating pump body 21 facilitates the heat dissipation and operation of the pump, and the power output end of the pump directly acts on the aluminum liquid inside the circulating pumping area 27, optimizing the flow efficiency of the aluminum liquid; During use, the detachable structure of the movable furnace cover 6 makes the installation and maintenance of the circulation pump more flexible, reducing the complexity of equipment maintenance. The circulation pump is installed on the middle upper surface of the movable furnace cover 6, which can efficiently promote the circulation of aluminum liquid and enhance the thermal uniformity and processing performance of the aluminum liquid. The sealing performance of the movable furnace cover 6 ensures the safety and thermal insulation effect of the high-temperature melt of the aluminum liquid, while preventing the external environment from interfering with the temperature in the furnace.

[0026] Please see attached Figure 2 , Attachment Figure 4 and attached Figure 5 The heating area 28 includes a heating zone furnace cover 3, which is detachably mounted on the inner wall of the lining 2, and one side outer wall of the heating zone furnace cover 3 is fixedly connected to the outer wall of the movable furnace cover 6. A smelting heater 20 is arranged inside the heating zone furnace cover 3, and the smelting heater 20 is arranged in a plurality of groups and distributed in a rectangular shape.

[0027] Specifically, the rectangular distribution design of multiple groups of smelting heaters 20 makes the heat source distribution more uniform, avoiding local overheating or large temperature gradient, thereby effectively improving the smelting quality of aluminum liquid. The fixed connection between the heating zone furnace cover 3 and the movable furnace cover 6 optimizes the connection between the functional areas inside the equipment, reduces heat loss, and improves the overall thermal efficiency. The detachable design of the heating zone furnace cover facilitates the daily maintenance and overhaul of the equipment, and the replacement or cleaning of the heater is more convenient, reducing downtime.

[0028] Please see attached Figure 2 , Attachment Figure 4 and attached Figure 5 The aluminum melting area 29 includes an aluminum melting area furnace cover 4, the outer wall of which is detachably mounted on the inner wall of the lining 2, the outer wall of which is fixedly connected to the inner wall of the equipment housing steel structure 1, the inner wall of which is arranged on the outer wall of the smelting heater 20, the inner wall of which is provided with a burner 22, the upper side of which is provided with an aluminum melting area slag removal cover 10, the outer wall of which is fitted with the outer wall of the heating area furnace cover 3.

[0029] Specifically, during the startup phase of the aluminum melting area 29, the burner 22 quickly preheats the furnace body, and the temperature in the heating area quickly rises to the melting point of aluminum. During the smelting process, the smelting heater 20 provides the main heat, and the aluminum liquid is evenly heated by its multiple groups of rectangularly distributed heating units. The temperature of the aluminum melt is stable and there is no temperature difference. The oxides or slag generated during the aluminum melting process are regularly removed through the aluminum melting area slag cover 10 to avoid the influence of impurities on the purity of the aluminum liquid. The outer walls of the aluminum melting area furnace cover 4 and the heating area furnace cover 3 are tightly fitted. When the aluminum liquid in the aluminum melting area flows to other functional areas such as the temperature supplement area 31 and the degassing area 32 under the action of the circulation pump, the temperature is kept uniform, and the fluidity and processing performance of the aluminum liquid are optimized; During use, the synergistic effect of the smelting heater 20 and the burner 22 is achieved to make the aluminum melt quickly and stably keep warm, which significantly improves the production efficiency. The multiple groups of rectangular distribution design of the smelting heater 20 evenly cover the heating area 28, so that the temperature of the aluminum liquid is consistent, without local overheating or temperature difference. The detachable aluminum melting area furnace cover 4 and slag cover provide a convenient operation method, which is convenient for slag cleaning and equipment maintenance, and reduces the difficulty of maintenance. The close combination of the furnace cover and the furnace body and other covers significantly reduces heat loss, improves the overall thermal efficiency of the equipment, and reduces energy consumption.

[0030] Please refer to the attached Figure 2 , Attachment Figure 4 and attached Figure 5 The temperature compensation area 31 includes a temperature compensation zone furnace cover 7, the outer wall of the temperature compensation zone furnace cover 7 can be detachably installed on the inner wall of the equipment shell steel structure 1, the inner wall of the temperature compensation zone furnace cover 7 is provided with a temperature compensation heater 19, and the outer wall of the temperature compensation zone furnace cover 7 is in contact with the outer wall of the aluminum melting zone furnace cover 4.

[0031] Specifically, the aluminum liquid enters the heating area 31 from the aluminum melting area 29 through the overflow channel. In the heating area 31, the heating heater 19 provides precise secondary heating to make the aluminum liquid temperature reach the range required by the process. The heating heater 19 directly heats the aluminum liquid using an efficient immersion design. At the same time, the temperature control system dynamically adjusts the heating power by monitoring the aluminum liquid temperature to avoid overheating or insufficient temperature. The aluminum liquid after heating flows to the next process through the connecting channels between the heating area 31 and other functional areas such as the degassing area 32 or the soup extraction area 33, so that the aluminum liquid temperature is constant to meet the high-quality casting requirements. The sealing of the heating area 31 is ensured by the close connection between the heating area furnace cover 7 and the equipment casing steel structure 1 and the fitting design with the aluminum melting area furnace cover 4, thereby improving the heating efficiency and reducing energy loss.

[0032] Please refer to the attached Figure 2 , Attachment Figure 4 and attached Figure 5The degassing area 32 includes a degassing area furnace cover 8, the outer wall of which is detachably mounted on the inner wall of the equipment housing steel structure 1, the outer wall of the degassing area furnace cover 8 is in contact with the outer wall of the heating area furnace cover 7, and the outer wall of the degassing area furnace cover 8 is in contact with the outer wall of the aluminum melting area furnace cover 4. A soup distribution chute 12 is provided at the upper left part of the degassing area furnace cover 8, a degassing area slag cover 11 is provided at the lower left part of the degassing area furnace cover 8, and a degassing rotor drive 18 is provided in the middle of the degassing area furnace cover 8.

[0033] Specifically, the aluminum liquid flows from the temperature supplement area 31 into the degassing area 32 and enters the degassing device. The degassing rotor drive 18 disperses the degassing gas such as nitrogen into the aluminum liquid through the rotation action, generating a large number of bubbles with a diameter of 1.5 mm to 3.0 mm. These bubbles react with the hydrogen and inclusions in the aluminum liquid and bring them out of the surface of the aluminum liquid. The scum generated during the degassing process is cleaned by the degassing area slag cover 11 to keep the degassing area 32 clean and the aluminum liquid pure. The treated aluminum liquid flows to the next process such as the soup taking area 33 or is directly transported to the casting process through the soup mixing trough 12, so that the purity of the aluminum liquid meets the subsequent processing requirements. The structural design of the degassing area, the fitting of the furnace cover and the internal sealing ensure the heat retention and the efficient treatment of the aluminum liquid. During use, the high-speed rotation of the degassing rotor drive 18 is achieved to disperse the gas into the aluminum liquid to generate tiny bubbles, which greatly improves the gas reaction efficiency and impurity removal ability, and improves the purity of the aluminum liquid. The detachable degassing zone furnace cover 8 is designed to facilitate equipment inspection and replacement or maintenance of the degassing rotor, reducing equipment maintenance costs and time. The soup flow trough 12 realizes the smooth transportation of the aluminum liquid after degassing, avoids stagnation of the aluminum liquid, and ensures the continuity of subsequent processes and the stability of the quality of the aluminum liquid. The fitting design between the degassing zone and the warming zone and the aluminum melting zone avoids heat loss and improves the energy utilization rate in the aluminum liquid treatment process. The slag generated during the degassing process is quickly cleaned up through the slag cover, reducing the contamination of the aluminum liquid by impurities and optimizing the operating environment of the degassing area 32.

[0034] Please see attached Figure 2 -Attached Figure 7 The soup taking area 33 includes a soup taking area furnace cover 9, the outer wall of which is detachably mounted on the inner wall of the equipment housing steel structure 1, a temperature compensation heater 19 is arranged in the middle of the soup taking area furnace cover 9, and two groups of temperature compensation heaters 19 are arranged in a horizontal distribution, and a filter plate 17 is fixedly connected to the upper surface of the soup taking area furnace cover 9. A molten soup temperature measuring thermocouple 16 is arranged on the upper surface of the soup taking area furnace cover 9, and a laser liquid level sensor 15 is arranged inside the soup taking area furnace cover 9. A water discharge guide groove 13 is arranged inside the left side of the soup taking area 33, and the water discharge guide groove 13 is arranged on the upper part of the aluminum liquid transfer bag 25.

[0035] Specifically, the aluminum liquid flows into the soup taking area 33 after being processed in the temperature compensation area 31 and the degassing area 32. The temperature compensation heater 19 performs secondary temperature adjustment on the aluminum liquid entering the soup taking area 33 to keep the aluminum liquid within a suitable temperature range to prevent the temperature drop from affecting the casting quality. The aluminum liquid flowing into the soup taking area 33 first passes through the filter plate 17 to remove residual impurities to ensure the purity of the aluminum liquid; at the same time, the molten soup temperature measuring thermocouple 16 monitors the temperature of the aluminum liquid in real time and transmits the data to the control system for dynamic adjustment. The laser liquid level sensor 15 accurately monitors the aluminum liquid level to avoid excessive or insufficient liquid level. The treated aluminum liquid flows to the aluminum liquid transfer bag 25 through the water discharge guide trough 13 to complete the soup taking operation. The aluminum liquid transfer bag 25 transports the aluminum liquid to the subsequent casting process.

[0036] Please refer to the attached Figure 2 , Attachment Figure 4 and attached Figure 5 The feeding area 30 includes a feeding area furnace cover 5, the outer wall of which is detachably mounted inside the equipment housing steel structure 1, the left outer wall of the feeding area furnace cover 5 is in contact with the right outer wall of the soup taking area furnace cover 9, the right outer wall of the feeding area furnace cover 5 is in contact with the left outer wall of the movable furnace cover 6, the rear side of the feeding area furnace cover 5 is in contact with the front outer wall of the aluminum melting area furnace cover 4, the feeding area 30 includes a feeding area furnace cover 5, the outer wall of which is detachably mounted inside the equipment housing steel structure 1, the left outer wall of the feeding area furnace cover 5 is in contact with the right outer wall of the soup taking area furnace cover 9 The right side outer wall of the charging zone furnace cover 5 is in contact with the left side outer wall of the movable furnace cover 6, the rear side of the charging zone furnace cover 5 is in contact with the front side outer wall of the aluminum melting zone furnace cover 4, a vortex-free charging chamber is arranged inside the charging area 30, the vortex-free charging chamber includes a charging chamber baffle 34, the outer wall of the charging chamber baffle 34 is fixedly connected to the inside of the charging area 30, the inside of the charging chamber baffle 34 is provided with a charging chamber side 36 and a charging chamber front 35, an aluminum liquid inlet 38 is arranged on the right side of the charging chamber baffle 34, and an aluminum liquid outlet 37 is arranged on the rear side of the charging chamber baffle 34.

[0037] Specifically, the feeding area 30 is sealed and isolated from the outside world by the feeding area furnace cover 5, so that the high temperature environment inside the equipment and the quality of aluminum liquid are not disturbed by the outside world during the feeding process. The solid aluminum alloy material enters the feeding area 30 from the feeding port through the solid aluminum alloy feeder 26, and flows into the aluminum melting area 29 through the fitting part between the feeding area furnace cover and the aluminum melting area 29. During the smelting process, the fitting design of the feeding area furnace cover 5, the soup extraction area furnace cover 9, the movable furnace cover 6 and the aluminum melting area furnace cover 4 forms a complete closed smelting system, which reduces heat loss and improves energy utilization efficiency. The vortex-free feeding chamber adopts an asymmetric design to break the vortex formation conditions caused by the traditional symmetrical shape. The side of the feeding chamber is designed to be an arc plus a tangent plane. After the aluminum liquid passes through the circulation pump, it enters the feeding chamber from the aluminum liquid inlet of the feeding chamber, so that the aluminum liquid can flow along a specific path on the side of the feeding chamber when entering, instead of forming a vortex. The aluminum liquid inlet end of the feeding chamber is designed to be conical to guide the flow direction of the aluminum liquid, so that it is evenly dispersed and the possibility of the material falling to form a vortex is reduced. The shape, angle and position of the guide hole are carefully designed, and a streamlined design is adopted to reduce the resistance to the flow of materials. In the position where the vortex may appear, the aluminum liquid outlet is set in the feeding chamber structure to destroy the formation mechanism of the vortex. By changing the flow state of molten aluminum, vortices cannot be formed or quickly dissipate. Through special design and devices, the formation of vortices is effectively avoided, making the flow of molten aluminum in the feeding chamber more stable and uniform, reducing the splashing, impact and uneven distribution of materials, which is beneficial to improving the stability of subsequent production processes and the consistency of product quality. The stable flow state can reduce the mutual collision and friction between solid aluminum blocks caused by vortices, reduce the possibility of solid aluminum block agglomeration, and also avoid the precipitation and accumulation of solid aluminum blocks at the bottom or corner of the feeding chamber due to the vortex, ensuring that the solid aluminum blocks can fully participate in the processing process, reducing the splashing and dust of molten aluminum, reducing the possibility of dust pollution and leakage of molten aluminum, making the working environment cleaner and more sanitary, which is beneficial to protecting the health and safety of operators, and also meets environmental protection requirements.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An all-electric isothermal melting and holding furnace, comprising a steel structure for an equipment housing (1), characterized in that: The equipment shell steel structure (1) is provided with an inner lining (2), the middle of the equipment shell steel structure (1) and the inner lining (2) is provided with a circulating pumping area (27), the middle of the inner lining (2) is provided with a heating area (28), the inner lining (2) is provided with an aluminum melting area (29), the inner lining (2) is provided with a temperature compensation area (31), the aluminum melting area (29) and the temperature compensation area (31) are connected by an overflow channel, the inner lining (2) is provided with a degassing area (32), the inner lining (2) is provided with a soup extraction area (33), the inner lining (2) is provided with a feeding area (30), and the inner lining (2) is provided with a heating area (28). An aluminum liquid transfer bag (25) is arranged on the left side of the equipment housing steel structure (1), an aluminum liquid drain port (14) is arranged on the rear side outer wall of the equipment housing steel structure (1), the aluminum liquid drain port (14) is provided with a through hole, and the aluminum liquid drain port (14) is connected to the inside of the aluminum melting area (29) through the through hole, a solid aluminum alloy feeder (26) is arranged on the outer wall of the equipment housing steel structure (1), a channel baffle (23) is arranged inside the equipment housing steel structure (1), and the outer wall of the channel baffle (23) is slidably connected to the inside of the overflow channel, and a water discharge channel blocking mechanism (24) is arranged on the left side outer wall of the equipment housing steel structure (1).

2. The all-electric isothermal melting and holding furnace according to claim 1, characterized in that: The circulating pumping area (27) comprises a movable furnace cover (6), the outer wall of which is detachably mounted on the inner wall of the lining (2), and a circulating pump body (21) is provided on the middle upper surface of the movable furnace cover (6).

3. The all-electric isothermal melting and holding furnace according to claim 1, characterized in that: The heating area (28) comprises a heating zone furnace cover (3), wherein the heating zone furnace cover (3) is detachably mounted on the inner wall of the lining (2), and one side outer wall of the heating zone furnace cover (3) is fixedly connected to the outer wall of the movable furnace cover (6). A smelting heater (20) is arranged inside the heating zone furnace cover (3), and the smelting heater (20) is arranged in a plurality of groups and distributed in a rectangular shape.

4. The all-electric isothermal melting and holding furnace according to claim 1, characterized in that: The aluminum melting area (29) comprises an aluminum melting area furnace cover (4), the outer wall of which is detachably mounted on the inner wall of the lining (2), the outer wall of which is fixedly connected to the inner wall of the equipment housing steel structure (1), the inner wall of which is arranged on the outer wall of the smelting heater (20), the inner wall of which is provided with a burner (22), the upper side of which is provided with an aluminum melting area slag removal cover (10), and the outer wall of which is in contact with the outer wall of the heating area furnace cover (3).

5. The all-electric isothermal melting and holding furnace according to claim 1, characterized in that: The temperature compensation area (31) comprises a temperature compensation area furnace cover (7), the outer wall of the temperature compensation area furnace cover (7) being detachably mounted on the inner wall of the equipment housing steel structure (1), the inner wall of the temperature compensation area furnace cover (7) being provided with a temperature compensation heater (19), and the outer wall of the temperature compensation area furnace cover (7) being in contact with the outer wall of the aluminum melting area furnace cover (4).

6. The all-electric isothermal melting and holding furnace according to claim 1, characterized in that: The degassing area (32) comprises a degassing area furnace cover (8), the outer wall of which is detachably mounted on the inner wall of the equipment housing steel structure (1), the outer wall of which is in contact with the outer wall of the heating area furnace cover (7), and the outer wall of which is in contact with the outer wall of the aluminum melting area furnace cover (4).

7. The all-electric isothermal melting and holding furnace according to claim 6, characterized in that: A soup mixing chute (12) is provided at the upper left portion of the degassing zone furnace cover (8), a degassing zone slag removal cover (11) is provided at the lower left portion of the degassing zone furnace cover (8), and a degassing rotor drive (18) is provided at the middle portion of the degassing zone furnace cover (8).

8. The all-electric isothermal melting and holding furnace according to claim 1, characterized in that: The soup taking area (33) comprises a soup taking area furnace cover (9), the outer wall of which is detachably mounted on the inner wall of the equipment housing steel structure (1), a supplementary temperature heater (19) is arranged in the middle of the soup taking area furnace cover (9), and the supplementary temperature heater (19) is arranged in two groups and is distributed laterally, and a filter plate (17) is fixedly connected to the upper surface of the soup taking area furnace cover (9).

9. The all-electric isothermal melting and holding furnace according to claim 8, characterized in that: A molten-water temperature measuring thermocouple (16) is arranged on the upper surface of the furnace cover (9) of the soup taking area, a laser liquid level sensor (15) is arranged inside the furnace cover (9) of the soup taking area, and a water discharge guide groove (13) is arranged inside the left side of the soup taking area (33), and the water discharge guide groove (13) is arranged on the upper part of the aluminum liquid transfer bag (25).

10. The all-electric isothermal melting and holding furnace according to claim 1, characterized in that: The feeding area (30) comprises a feeding area furnace cover (5), the outer wall of which is detachably mounted inside the equipment housing steel structure (1), the left outer wall of the feeding area furnace cover (5) is in contact with the right outer wall of the soup taking area furnace cover (9), the right outer wall of the feeding area furnace cover (5) is in contact with the left outer wall of the movable furnace cover (6), the rear side of the feeding area furnace cover (5) is in contact with the front outer wall of the aluminum melting area furnace cover (4), and the feeding area ( A vortex-free feeding chamber is arranged inside the feeding chamber (30), the vortex-free feeding chamber comprises a feeding chamber baffle (34), the outer wall of the feeding chamber baffle (34) is fixedly connected to the inside of the feeding area (30), the inside of the feeding chamber baffle (34) is provided with a feeding chamber side (36) and a feeding chamber front (35), the right side of the feeding chamber baffle (34) is provided with an aluminum liquid inlet (38), and the rear side of the feeding chamber baffle (34) is provided with an aluminum liquid outlet (37).

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