Crucible furnace with energy-saving heat energy recovery and fuel gas dumping functions

Abstract

The invention discloses a crucible furnace with energy-saving, heat energy recovery and fuel gas dumping functions, and relates to the technical field of metal smelting, the crucible furnace comprises a crucible body, a furnace body, a support frame and a heat energy recovery assembly, the crucible body is fixedly connected with the furnace body, the furnace body is rotatably and cooperatively connected with the support frame, and the heat energy recovery assembly comprises an air blower, a gas guide pipe, a water storage cylinder and a heat insulation cylinder; the water storage barrel is arranged in the heat insulation barrel, the air guide pipe is wound on the outer side of the water storage barrel, one end of the air guide pipe and the output end of the air blower are both communicated with the hearth, and the other end of the air guide pipe is communicated with the input end of the air blower. A large amount of heat is transferred to cold water in the water storage cylinder in a heat conduction mode, and waste heat is converted into hot water to be stored. The part of hot water can be used in other production links, such as preheating raw materials, cleaning equipment and the like, or can be used as domestic hot water, so that secondary utilization of energy is realized, and consumption of extra energy is greatly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of metal smelting, and in particular to a crucible furnace with an energy-saving heat recovery and fuel gas dumping function. Background Art

[0002] Crucible furnaces are primarily used to melt non-ferrous metals with relatively low melting points, such as copper, aluminum, and their alloys. In a crucible furnace, the alloy melts within a crucible, with heat transferred to the charge through the crucible. Because the charge and combustion products are not in direct contact, the alloy's chemical composition is largely unaffected by furnace gases, and the temperature of the molten alloy is relatively uniform. The crucible furnace operates by heating the crucible, melting the metal or alloy within. Heat is then transferred from the crucible to the charge, achieving smelting. Different types of crucible furnaces may utilize different heating methods, such as resistance heating, fuel oil heating, or gas heating.

[0003] In existing technical solutions, crucible furnaces often have the problem of heat energy waste after use. In particular, after the alloy liquid is poured out, the crucible itself still maintains a very high temperature, while the traditional practice is usually to let the crucible cool naturally. In this process, the residual heat inside the crucible and on the crucible wall is not effectively recovered and utilized, but is directly released into the surrounding environment. If the high-temperature crucible is not handled properly during the cooling process, it may cause safety risks such as burns to the operator. At the same time, a long-term high-temperature environment may also damage the crucible itself and shorten its service life. Summary of the Invention

[0004] The invention provides a crucible furnace with an energy-saving heat recovery and fuel gas dumping function, which can solve the problem of heat energy waste in the prior art when the crucible furnace is naturally cooled after use.

[0005] A crucible furnace with an energy-saving heat recovery and gas dumping function comprises a crucible body, a furnace body, a crucible heating assembly, a support frame, a heat recovery assembly and a crucible dumping assembly, wherein the crucible body is fixedly connected to the furnace body, a furnace chamber is formed between the crucible body and the furnace body, the crucible heating assembly is arranged in the furnace chamber, the furnace body is rotatably connected to the support frame, the heat recovery assembly comprises a blower, an air duct, a water storage cylinder and an insulation cylinder, the water storage cylinder is arranged in the insulation cylinder, the air duct is spirally wound around the outside of the water storage cylinder, one end of the air duct and the output end of the blower are connected to the furnace chamber, the other end of the air duct is connected to the input end of the blower, the crucible dumping assembly is arranged on the support frame, and the crucible dumping assembly is used to adjust the inclination angle of the furnace body.

[0006] According to one embodiment of the present invention, a horizontal rotating shaft is fixedly provided on the side of the furnace body, and the rotating shaft is rotatably connected to the support frame.

[0007] According to one embodiment of the present invention, a first through slot and a second through slot connected to the furnace are respectively provided at both ends of the rotating shaft, a first rotating plate and a second rotating plate are respectively rotatably arranged in the first through slot and the second through slot, an exhaust hole connected to the air guide pipe is provided on the top of the first rotating plate, and an air inlet hole connected to the output end of the blower is provided at the bottom of the second rotating plate.

[0008] According to one embodiment of the present invention, the crucible tipping assembly includes a driven gear and a driving gear, the driven gear is coaxially fixedly connected to the rotating shaft, the driving gear is rotationally connected to the support frame, and the driven gear is meshed with the driving gear.

[0009] According to one embodiment of the present invention, the crucible tipping assembly further comprises a rotary motor, the rotary motor is fixedly connected to the support frame, and the output end of the rotary motor is coaxially fixedly connected to the driving gear.

[0010] According to one embodiment of the present invention, the water storage cylinder includes a cylinder body and a cylinder cover, the cylinder cover is cooperatively arranged on the top of the cylinder body, a drainage pipe is fixedly arranged on the bottom of the cylinder body, the cylinder cover is provided with a liquid filling port and an exhaust port, and the cylinder cover has a conical structure, and the exhaust port is located at the top of the cylinder cover.

[0011] According to one embodiment of the present invention, the heat recovery assembly further includes a connecting pipe, the bottom of the connecting pipe is connected to the drain pipe, and the top of the connecting pipe is connected to the cylinder cover.

[0012] According to one embodiment of the present invention, a plurality of longitudinally arranged scale bars are provided on the outer side of the connecting pipe.

[0013] According to one embodiment of the present invention, a furnace cover is hingedly provided on the top of the furnace body, and a handle is fixedly provided on the top of the furnace cover.

[0014] According to one embodiment of the present invention, a plurality of universal wheels arranged in a matrix are fixedly provided on the bottom of the support frame and the bottom of the heat insulation cylinder.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This crucible furnace utilizes a heat recovery component, using a blower to draw high-temperature air from the furnace into an air duct. The air duct spirals around the outside of the water storage cylinder. As the hot air flows, it conducts heat to the cold water within the cylinder, converting the excess heat into stored hot water. This hot water can be used in other production processes, such as preheating raw materials, cleaning equipment, or as domestic hot water, achieving secondary energy utilization and significantly reducing additional energy consumption.

[0017] 2. The cooled air is returned to the furnace through the air duct to maintain a certain temperature inside the furnace. When heating again, since the furnace has a certain base temperature, the heating time and energy consumption required for the heating wire to reach the target temperature can be reduced, significantly improving energy efficiency and reducing production costs.

[0018] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0020] Figure 1 It is a three-dimensional structural diagram of a crucible furnace with energy-saving heat recovery and gas dumping function.

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the crucible dumping assembly in the present invention.

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the blower in the present invention.

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the support frame in the present invention.

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the heat recovery component in the present invention.

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the water storage cylinder in the present invention.

[0026] Reference numerals include:

[0027] 1. Crucible body; 2. Furnace body; 3. Support frame; 4. Heat recovery assembly; 5. Crucible tipping assembly; 6. Blower; 7. Air duct; 8. Water storage cylinder; 9. Insulation cylinder; 10. Rotating shaft; 11. First through slot; 12. Second through slot; 13. First rotating plate; 14. Second rotating plate; 15. Exhaust hole; 16. Air inlet hole; 17. Driven gear; 18. Driving gear; 19. Rotating motor; 20. Cylinder body; 21. Cylinder cover; 22. Connecting pipe; 23. Scale bar; 24. Handle; 25. Universal wheel. DETAILED DESCRIPTION

[0028] The specific embodiments of the present invention are described in detail below, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0029] like Figures 1 to 6As shown, a crucible furnace with energy-saving heat recovery and gas dumping function includes a crucible body 1, a furnace body 2, a crucible heating assembly, a support frame 3, a heat recovery assembly 4, and a crucible dumping assembly 5. The crucible body 1 is fixedly connected to the furnace body 2, forming a furnace chamber between the crucible body 1 and the furnace body 2. The crucible heating assembly is arranged in the furnace chamber. The furnace body 2 is rotatably connected to the support frame 3. The heat recovery assembly 4 includes a blower 6, an air duct 7, a water storage cylinder 8, and an insulation cylinder 9. The water storage cylinder 8 is arranged in the insulation cylinder 9. The air duct 7 is spirally wound around the outside of the water storage cylinder 8. One end of the air duct 7 and the output end of the blower 6 are both connected to the furnace chamber, and the other end of the air duct 7 is connected to the input end of the blower 6. The crucible dumping assembly 5 is arranged on the support frame 3 and is used to adjust the tilt angle of the furnace body 2. The crucible heating assembly includes a heating wire, which is wound around the side of the crucible body 1.

[0030] The crucible body 1 is heated by an electric heating wire to melt the alloy in the crucible body 1 to form an alloy liquid. When the heating work is completed, the traditional crucible furnace allows the residual heat in the furnace to dissipate, while this furnace intervenes through the heat recovery component 4. The blower 6 is started, and the high-temperature hot air in the furnace is sucked into the air duct 7. The air duct 7 is spirally wrapped around the outside of the water storage cylinder 8. When the hot air flows in the air duct 7, the heat is efficiently transferred to the cold water in the water storage cylinder 8 in the form of heat conduction, thereby realizing the recovery and utilization of the residual heat. The cooled air is sent back to the furnace through the air duct 7 to maintain a certain temperature in the furnace and reduce the energy consumption during subsequent heating. At the same time, the crucible tipping component 5 set on the support frame 3 can flexibly adjust the tilt angle of the furnace body 2 to facilitate the tipping of the processed materials in the crucible body 1. The whole process is closely connected, organically combining heat energy utilization with operational convenience, and comprehensively solving the problems existing in traditional crucible furnaces.

[0031] This crucible furnace utilizes a heat recovery assembly 4 and a blower 6 to draw the hot air from the furnace into an air duct 7. This air duct 7 spirals around a water storage cylinder 8. As the hot air flows, it transfers a significant amount of heat to the cold water within the cylinder 8 through heat conduction, converting the excess heat into stored hot water. This hot water can be used in other production processes, such as preheating raw materials, cleaning equipment, or as domestic hot water, achieving secondary energy utilization and significantly reducing additional energy consumption.

[0032] The cooled air is then sent back to the furnace through the air duct 7 to maintain a certain temperature inside the furnace. When heating is performed again, since the furnace has a certain base temperature, the heating time and energy consumption required for the heating wire to reach the target temperature can be reduced, thereby significantly improving energy efficiency and reducing production costs.

[0033] refer to Figure 4As shown, in some specific embodiments, a horizontal rotating shaft 10 is fixedly provided on the side of the furnace body 2, and the rotating shaft 10 is rotatably connected to the support frame 3. A first through slot 11 and a second through slot 12 are respectively provided at both ends of the rotating shaft 10, which are connected to the furnace chamber. A first rotating plate 13 and a second rotating plate 14 are rotatably provided in the first through slot 11 and the second through slot 12, respectively. The top of the first rotating plate 13 is provided with an exhaust hole 15 connected to the air guide pipe 7, and the bottom of the second rotating plate 14 is provided with an air inlet hole 16 connected to the output end of the blower 6.

[0034] When the furnace body 2 rotates due to operations such as dumping materials, the first rotating plate 13 and the second rotating plate 14 rotate synchronously with the rotating shaft 10, always ensuring stable communication between the air duct 7 and the furnace, and between the blower 6 and the furnace. The hot air continues to flow in the circulation system formed by the furnace, the air duct 7 and the blower 6 without being disturbed by the rotation of the furnace body 2.

[0035] In traditional crucible furnaces, the rotation of the furnace body 2 often severely disrupts the gas circulation path, resulting in unsustainable waste heat recovery. However, this solution ensures that waste heat recovery can continue stably even with frequent rotation of the furnace body 2, significantly improving the sustainability and effectiveness of waste heat recovery, reducing heat waste, and laying a solid foundation for energy conservation.

[0036] refer to Figure 2 As shown, in some specific embodiments, the crucible tipping assembly 5 includes a driven gear 17, a driving gear 18, and a rotary motor 19. The driven gear 17 is coaxially fixedly connected to the rotating shaft 10, and the driving gear 18 is rotationally connected to the support frame 3. The driven gear 17 and the driving gear 18 are meshed. The output end of the rotary motor 19 is coaxially fixedly connected to the driving gear 18.

[0037] When the rotating motor 19 is started, the rotating motor 19 drives the driving gear 18 to rotate, and the driving gear 18 transmits power to the driven gear 17 through meshing, thereby driving the rotating shaft 10 and the connected furnace body 2 to rotate smoothly, thereby achieving precise control of the tilt angle of the furnace body 2.

[0038] Compared to the traditional, laborious method of manually dumping materials from the crucible 1, the dumping assembly driven by the rotary motor 19 offers significant advantages. On the one hand, it greatly improves the convenience and accuracy of the dumping operation. Operators can easily adjust the furnace body 2 to the desired tilt angle by simply controlling the rotary motor 19, improving work efficiency. On the other hand, the motor's stable power output ensures smooth rotation of the furnace body 2, reducing material splashing due to improper operation, lowering safety risks, ensuring a stable and efficient production process, and indirectly reducing additional energy losses caused by production accidents, thereby contributing to energy conservation at the operational level.

[0039] refer to Figure 6As shown, in some specific embodiments, the water storage cylinder 8 includes a cylinder body 20 and a cylinder cover 21. The cylinder cover 21 is cooperatively arranged on the top of the cylinder body 20. A drainage pipe is fixedly arranged at the bottom of the cylinder body 20. The cylinder cover 21 is provided with a liquid filling port and an exhaust port, and the cylinder cover 21 has a conical structure, and the exhaust port is located at the top of the cylinder cover 21.

[0040] When the hot air in the air duct 7 flows around the water storage cylinder 8, the heat is quickly transferred to the cold water in the cylinder. The water is heated and part of the water vaporizes to form water vapor and escapes from the exhaust port. At the same time, cold water can be replenished in time through the liquid filling port to maintain the dynamic balance of water level and water temperature in the cylinder and continuously absorb residual heat.

[0041] refer to Figure 6 As shown, in some specific embodiments, the heat recovery component 4 also includes a connecting pipe 22, the bottom of the connecting pipe 22 is connected to the drain pipe, the top of the connecting pipe 22 is connected to the cylinder cover 21, and a plurality of longitudinally arranged scale bars 23 are provided on the outside of the connecting pipe 22, which can intuitively reflect the water level changes in the water storage cylinder 8.

[0042] As the waste heat recovery process progresses, the water in the water storage cylinder 8 is continuously heated, discharged and replenished, and the water level in the connecting pipe 22 rises and falls accordingly. The operator can clearly read the water level value through the scale bar 23.

[0043] The scale bar 23 provides the operator with real-time and intuitive water level information, which facilitates precise control of water injection and drainage, so that the water storage cylinder 8 is always in the best working state, fully exerts the waste heat recovery efficiency, avoids heat energy waste due to improper operation, and further improves the refined management level of energy utilization.

[0044] refer to Figure 1 As shown, in some specific embodiments, a lid is hingedly mounted on the top of the furnace body 2. A handle 24 is fixedly mounted on the top of the lid to facilitate operator application. During the heating phase, closing the lid effectively reduces heat loss from the furnace chamber to the outside, creating a good thermal insulation environment. This allows more energy from the crucible heating assembly to be used to heat the crucible body 1, improving heating efficiency. To add material or observe the interior of the crucible body 1, the operator can easily lift the lid using handle 24 to complete the corresponding operation.

[0045] The heat preservation effect of the furnace cover reduces energy waste and lowers energy loss from the heating source. At the same time, the setting of the handle 24 improves the convenience of operation, allowing the operator to quickly and accurately complete the opening and closing operation of the furnace cover, ensuring a smooth production process and indirectly helping to achieve energy-saving goals.

[0046] refer to Figure 4 and Figure 5 As shown, in some specific embodiments, the bottom of the support frame 3 and the insulation cylinder 9 are fixedly provided with a plurality of universal wheels 25 arranged in a matrix.

[0047] In the production workshop, the crucible furnace can be easily moved to different workstations according to different production process requirements to meet diverse production scenarios; during equipment maintenance, the crucible furnace can be conveniently moved to the designated maintenance area to reduce the operational inconvenience caused by equipment fixation.

[0048] To facilitate understanding of the embodiments of this solution by those skilled in the art, the working principle of the embodiments of this solution will now be described in conjunction with specific application scenarios:

[0049] The heating wire is wound around the side of the crucible. When the power is turned on, the heating wire heats up and transfers heat to the crucible and the alloy inside, causing it to melt. The furnace lid is closed to reduce heat loss and improve heating efficiency.

[0050] After heating is complete, blower 6 starts, drawing the hot air from the furnace into air duct 7. Air duct 7 spirals around the outside of water storage cylinder 8. As the hot air flows, it transfers heat to the cold water in water storage cylinder 8 through heat conduction, raising the water temperature and recycling waste heat. The cooled air is then returned to the furnace through air duct 7, maintaining a constant temperature and reducing energy consumption during subsequent heating.

[0051] The crucible tipping assembly 5, mounted on the support frame 3, allows for flexible adjustment of the inclination angle of the furnace body 2, facilitating the tipping of the processed alloy liquid within the crucible. The tipping assembly is driven by a rotary motor 19, which, through a gear transmission, enables smooth rotation of the furnace body 2, improving the convenience and accuracy of the tipping operation.

[0052] The above disclosures are only a few specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A crucible furnace with energy-saving heat recovery gas dumping function, characterized in that: The invention comprises a crucible body (1), a furnace body (2), a crucible heating component, a support frame (3), a heat recovery component (4) and a crucible dumping component (5), wherein the crucible body (1) is fixedly connected to the furnace body (2), a furnace chamber is formed between the crucible body (1) and the furnace body (2), the crucible heating component is arranged in the furnace chamber, the furnace body (2) is rotatably connected to the support frame (3), the heat recovery component (4) comprises a blower (6), an air guide pipe (7), a water storage cylinder (8) and The heat-insulating cylinder (9) is provided with a water storage cylinder (8) in the heat-insulating cylinder (9); the air guide pipe (7) is spirally wound around the outside of the water storage cylinder (8); one end of the air guide pipe (7) and the output end of the blower (6) are both connected to the furnace; the other end of the air guide pipe (7) is connected to the input end of the blower (6); the crucible tipping assembly (5) is provided on the support frame (3); and the crucible tipping assembly (5) is used to adjust the inclination angle of the furnace body (2).

2. The crucible furnace with energy-saving heat recovery and gas dumping function according to claim 1, characterized in that: A horizontal rotating shaft (10) is fixedly provided on the side of the furnace body (2), and the rotating shaft (10) is connected to the support frame (3) in a rotating manner.

3. The crucible furnace with energy-saving heat recovery and gas dumping function according to claim 2, characterized in that: A first through slot (11) and a second through slot (12) connected to the furnace are respectively provided at both ends of the rotating shaft (10); a first rotating plate (13) and a second rotating plate (14) are respectively rotatably provided in the first through slot (11) and the second through slot (12); an exhaust hole (15) connected to the air guide pipe (7) is provided at the top of the first rotating plate (13); and an air inlet hole (16) connected to the output end of the blower (6) is provided at the bottom of the second rotating plate (14).

4. The crucible furnace with energy-saving heat recovery and gas dumping function according to claim 2, characterized in that: The crucible tipping assembly (5) comprises a driven gear (17) and a driving gear (18), wherein the driven gear (17) is coaxially fixedly connected to the rotating shaft (10), the driving gear (18) is rotationally connected to the support frame (3), and the driven gear (17) and the driving gear (18) are meshed.

5. The crucible furnace with energy-saving heat recovery and gas dumping function according to claim 4, characterized in that: The crucible tipping assembly (5) further comprises a rotating motor (19), wherein the rotating motor (19) is fixedly connected to the support frame (3), and an output end of the rotating motor (19) is coaxially fixedly connected to the driving gear (18).

6. The crucible furnace with energy-saving heat recovery and gas dumping function according to claim 1, characterized in that: The water storage cylinder (8) comprises a cylinder body (20) and a cylinder cover (21), wherein the cylinder cover (21) is arranged on the top of the cylinder body (20), a liquid discharge pipe is fixedly arranged on the bottom of the cylinder body (20), and the cylinder cover (21) is provided with a liquid injection port and an exhaust port, and the cylinder cover (21) is a conical structure, and the exhaust port is located at the top of the cylinder cover (21).

7. The crucible furnace with energy-saving heat recovery and gas dumping function according to claim 6, characterized in that: The heat recovery assembly (4) further comprises a connecting pipe (22), the bottom of the connecting pipe (22) being connected to the drain pipe, and the top of the connecting pipe (22) being connected to the cylinder cover (21).

8. The crucible furnace with energy-saving heat recovery and fuel gas dumping function according to claim 7, characterized in that: A plurality of longitudinally arranged scale bars (23) are provided on the outer side of the connecting pipe (22).

9. The crucible furnace with energy-saving heat recovery and gas dumping function according to claim 1, characterized in that: A furnace cover is hingedly provided on the top of the furnace body (2), and a handle (24) is fixedly provided on the top of the furnace cover.

10. The crucible furnace with energy-saving heat recovery and gas dumping function according to claim 1, characterized in that: The bottoms of the support frame (3) and the heat-insulating cylinder (9) are both fixedly provided with a plurality of universal wheels (25) arranged in a matrix.

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