Safe smelting furnace for smelting aluminum

Abstract

The utility model discloses a safety type smelting furnace for smelting aluminum, which comprises a furnace body, a pouring structure is arranged at the bottom of the furnace body, a gas delivery pipe communicated with the pouring structure is arranged on the outer wall of the furnace body, the end part of the gas delivery pipe is connected with a feeding structure, the end part of the feeding structure is connected with a cover plate, and the cover plate is arranged at the top of the furnace body. A driving motor is mounted at the top of the cover plate, and the output end of the driving motor is connected with a stirring rotating shaft. According to the safe smelting furnace for smelting aluminum, materials conveyed in the conveying barrel are preheated and heated, so that subsequent rapid liquefaction of the materials is facilitated, the working efficiency of material liquefaction pouring is improved, and meanwhile, high-temperature gas leaked and wasted during pouring is secondarily utilized.

Description

Technical Field

[0001] The utility model relates to the technical field of smelting furnace equipment, and particularly relates to a safe smelting furnace for smelting aluminum. Background Technique

[0002] Smelting aluminum refers to the process of heating aluminum ore or recycled waste to its melting point to make it into liquid aluminum. A smelting furnace is used as a container in the heating and liquefaction process of smelting aluminum. A smelting furnace is a device used to heat solid materials to their melting point and convert them into a liquid state. There are various heating methods for the smelting furnace to heat materials, such as resistance heating, induction heating, combustion heating, and radiation heating. In the scenario of smelting aluminum, an aluminum electrolysis furnace is usually used.

[0003] However, in the process of smelting aluminum with the existing smelting furnace, on the one hand, it is necessary to remove the slag in the liquefied aluminum water, and on the other hand, after the aluminum is liquefied, it needs to be poured into a mold for casting. Because the aluminum water itself has a high temperature and the heat dissipated to the surrounding air is also relatively high, it is easy to cause burns to the staff during the operation of these two processes. Moreover, when the aluminum water is poured into the mold, a large amount of heat is released, and the existing equipment does not utilize it, resulting in waste of thermal energy.

[0004] In view of the above problems, it is urgent to innovate and design on the basis of the original smelting furnace. Content of the Utility Model

[0005] The technical solution of the utility model provides a solution significantly different from the prior art for the technical problem that the solution of the prior art is too single, so as to solve the problems that burns to the staff are likely to occur during the operation of these two processes mentioned in the above background technique, and when the aluminum water is poured into the mold, a large amount of heat is released, and the existing equipment does not utilize it, resulting in waste of thermal energy.

[0006] To achieve the above object, the utility model provides the following technical solution: a safe smelting furnace for smelting aluminum, including a furnace body, a pouring structure is arranged at the bottom of the furnace body, and an air delivery pipe communicating with the pouring structure is installed on the outer wall of the furnace body, and the end of the air delivery pipe is connected to a feeding structure, the end of the feeding structure is connected with a cover plate, and the cover plate is installed on the top of the furnace body, a driving motor is installed on the top of the cover plate, and the output end of the driving motor is connected with a stirring rotating shaft, the stirring rotating shaft is located in the melting cavity, and the melting cavity is opened at the top of the furnace body, a slag removal structure is arranged between the stirring rotating shaft and the cover plate, a discharge port is arranged between the melting cavity and the pouring structure, and a discharge valve is clamped and slidably connected between the discharge port and the outer wall of the furnace body, an electric telescopic rod is connected between the cover plate and the feeding structure, and a pressure relief valve is arranged on the top of the cover plate.

[0007] Preferably, the pouring structure includes a cavity, an L-shaped movable bottom plate, a pouring mold, and an opening. A cavity is formed at the bottom of the furnace body, and an opening communicating with the cavity is formed on the outer wall of the furnace body. An L-shaped movable bottom plate is arranged in the cavity, and the vertical area of the L-shaped movable bottom plate is closely attached to the opening. A pouring mold for shaping molten aluminum is installed on the top of the L-shaped movable bottom plate.

[0008] Preferably, the feeding structure includes a mounting frame, a feeding cylinder, a heat conduction groove, a screw rod, a feeding pipe, and an air extraction and heat exchange mechanism. The mounting frame is installed near the furnace body, and a feeding cylinder is installed on the mounting frame. A screw rod for conveying materials is installed in the feeding cylinder. A heat conduction groove is formed in the wall of the feeding cylinder. One end of the heat conduction groove is connected to the air delivery pipe, and the other end of the heat conduction groove is connected to the air extraction and heat exchange mechanism. A feeding pipe is installed at the bottom outlet of the feeding cylinder, and the end of the feeding pipe communicates with the cover plate.

[0009] Preferably, the heat conduction grooves are spirally distributed in the feeding cylinder, and the air extraction and heat exchange mechanism includes an air extraction fan and a heat exchanger for a set of heat dissipation processes.

[0010] Preferably, the slag removal structure includes a ceramic rotating cylinder, a bent rod, an outer ring groove, a movable cylinder, an inner ring groove, a strip groove, a fixed block, a slag removal mesh bag, and a scraper. The ceramic rotating cylinder is rotatably connected to the top of the cover plate, and a bent rod is arranged in the ceramic rotating cylinder. The end of the bent rod penetrates through the cover plate and is located in the outer ring groove. The outer ring groove is formed on the outer wall of the movable cylinder, and the movable cylinder is slidably sleeved on the outer wall of the stirring rotating shaft. An inner ring groove is formed on the inner wall of the movable cylinder, and a plurality of strip grooves are equally angularly arranged on the inner wall of the movable cylinder about its center line. Each strip groove communicates with the inner ring groove. At least one fixed block is connected to the outer wall of the stirring rotating shaft, and the fixed block is in a snap-fit sliding connection with the inner ring groove and the strip groove. The bottom of the outer wall of the movable cylinder is connected with a slag removal mesh bag, and the end of the slag removal mesh bag is connected with a scraper for scraping the inner wall of the melting cavity.

[0011] Preferably, the bent rod is arranged in an "L" shape, and the end of the bent rod is threadedly connected to the inner wall of the ceramic rotating cylinder. The other end of the bent rod is arranged in a spherical shape in the outer ring groove, and the bent rod is in a snap-fit sliding connection with the outer ring groove. The fixed block is arranged in a conical shape at one end face close to the strip groove in the inner ring groove to facilitate sliding into the strip groove.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the safe smelting furnace for smelting aluminum can, through the arrangement of the pouring structure, the discharge port and the discharge valve, inject the molten aluminum in the furnace cavity into the pouring mold in a contactless and sealed manner, thereby avoiding burns to the workers during the pouring process; and under the action of the exhaust heat exchange mechanism, the high-temperature gas generated by pouring the molten aluminum in the cavity of the pouring structure is introduced into the gas pipe, and before entering the heat conduction groove of the feed barrel, the material transported inside the feed barrel is preheated and the temperature of the material is increased, thereby facilitating the subsequent rapid liquefaction of the material, improving the working efficiency of the material liquefaction pouring, and at the same time, the high-temperature gas leaked and wasted during pouring is reused, thereby improving the practicality of the device;

[0013] Compared with traditional melting furnaces that do not have the function of preheating materials, each batch of materials entering the furnace needs to be heated from room temperature to the melting point to liquefy, which requires more energy loss than heating the preheated materials to the melting point.

[0014] The device can stir the molten aluminum through the stirring shaft to help it liquefy quickly and evenly. At the same time, the slag removal structure installed on the stirring shaft can operate after the molten aluminum is liquefied, thereby collecting and removing impurities floating on the surface of the molten aluminum. This process also eliminates the need for staff to remove slag personally, which may cause burns, thereby enhancing the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the front view structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the heat conduction groove of the utility model;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the movable cylinder of the utility model;

[0019] Figure 5 This is a schematic diagram of the top view of the strip groove structure of the utility model.

[0020] In the figure: 1. Furnace body; 2. Pouring structure; 201. Cavity; 202. L-shaped moving bottom plate; 203. Pouring mold; 204. Opening; 3. Gas transmission pipe; 4. Feeding structure; 401. Mounting rack; 402. Feeding cylinder; 403. Heat conduction groove; 404. Screw rod; 405. Feeding pipe; 406. Air extraction and heat exchange mechanism; 5. Cover plate; 6. Driving motor; 7. Stirring rotating shaft; 8. Melting cavity; 9. Slag removal structure; 901. Ceramic rotating cylinder; 902. Bent rod; 903. Outer ring groove; 904. Movable cylinder; 905. Inner ring groove; 906. Strip groove; 907. Fixed block; 908. Slag removal net pocket; 909. Scraper; 10. Discharge opening; 11. Discharge valve; 12. Electric telescopic rod; 13. Pressure relief valve. Detailed implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-5, the utility model provides a technical solution: a safety melting furnace for melting aluminum, including a furnace body 1, a pouring structure 2, a cavity 201, an L-shaped movable bottom plate 202, a pouring mold 203, an opening 204, an air delivery pipe 3, a feeding structure 4, a mounting frame 401, a feeding cylinder 402, a heat conduction groove 403, a screw rod 404, a feeding pipe 405, an air extraction and heat exchange mechanism 406, a cover plate 5, a driving motor 6, a stirring rotating shaft 7, a melting cavity 8, a slag removal structure 9, a ceramic rotating cylinder 901, a bent rod 902, an outer ring groove 903, a movable cylinder 904, an inner ring groove 905, a strip groove 906, a fixed block 907, a slag removal mesh bag 908, a scraping plate 909, a discharging port 10, a discharging valve 11, an electric telescopic rod 12, a pressure relief valve 13. A pouring structure 2 is provided at the bottom of the furnace body 1, and an air delivery pipe 3 communicating with the pouring structure 2 is installed on the outer wall of the furnace body 1, and the end of the air delivery pipe 3 is connected to a feeding structure 4. The end of the feeding structure 4 is connected with a cover plate 5, and the cover plate 5 is installed on the top of the furnace body 1. A driving motor 6 is installed on the top of the cover plate 5, and the output end of the driving motor 6 is connected with a stirring rotating shaft 7. The stirring rotating shaft 7 is located in the melting cavity 8, and the melting cavity 8 is opened at the top of the furnace body 1. A slag removal structure 9 is arranged between the stirring rotating shaft 7 and the cover plate 5, and a discharging port 10 is arranged between the melting cavity 8 and the pouring structure 2. And a discharging valve 11 is clamped and slidably connected between the discharging port 10 and the outer wall of the furnace body 1. An electric telescopic rod 12 is connected between the cover plate 5 and the feeding structure 4, and a pressure relief valve 13 is arranged on the top of the cover plate 5. And there are multiple heating methods for heating the materials in the melting cavity 8, such as resistance heating, induction heating, combustion heating and radiation heating. No matter which method is adopted, the melting furnace will heat the materials to their melting points and convert them into a liquid state by providing high temperature, and all are existing mature technologies, so they will not be elaborated here.

[0023] The pouring structure 2 includes a cavity 201, an L-shaped movable bottom plate 202, a pouring mold 203, and an opening 204. A cavity 201 is opened at the bottom of the furnace body 1, and an opening 204 communicating with the cavity 201 is opened on the outer wall of the furnace body 1. An L-shaped movable bottom plate 202 is arranged in the cavity 201, and the vertical area of the L-shaped movable bottom plate 202 is closely attached to the opening 204. And a pouring mold 203 for shaping molten aluminum is installed on the top of the L-shaped movable bottom plate 202. And a one-way valve for facilitating the entry of air and communicating with the cavity 201 is installed on the outer wall of the furnace body 1.

[0024] The feeding structure 4 includes a mounting frame 401, a feeding barrel 402, a heat conduction groove 403, an auger rod 404, a feeding pipe 405, and an exhaust heat exchange mechanism 406. The mounting frame 401 is installed near the furnace body 1, and the feeding barrel 402 is installed on the mounting frame 401, and the auger rod 404 for conveying materials is installed in the feeding barrel 402. A heat conduction groove 403 is opened in the wall of the feeding barrel 402, and one end of the heat conduction groove 403 is connected to the air pipe 3, and the other end of the heat conduction groove 403 is connected to the exhaust heat exchange mechanism 406. A feeding pipe 405 is installed at the bottom outlet of the feeding barrel 402, and the end of the feeding pipe 405 is connected to the cover plate 5.

[0025] The heat-conducting grooves 403 are distributed in a spiral shape in the feeding barrel 402, and the exhaust heat exchange mechanism 406 includes an exhaust fan and a heat exchanger as a set of heat dissipation processes.

[0026] The slag removal structure 9 includes a ceramic rotating drum 901, a bending rod 902, an outer ring groove 903, a movable drum 904, an inner ring groove 905, a strip groove 906, a fixed block 907, a slag removal net bag 908, and a scraper 909. The top of the cover plate 5 is rotatably connected to the ceramic rotating drum 901, and a bending rod 902 is provided in the ceramic rotating drum 901, and the end of the bending rod 902 passes through the cover plate 5 and is located in the outer ring groove 903. The outer ring groove 903 is opened on the outer wall of the movable drum 904, and the movable drum 904 is slidably sleeved on the outer wall of the stirring shaft 7 An inner ring groove 905 is provided on the inner wall of the movable cylinder 904, and a plurality of grooves 906 are provided on the inner wall of the movable cylinder 904 at equal angles about its center line, and each groove 906 is connected to the inner ring groove 905, and at least one fixed block 907 is connected to the outer wall of the stirring shaft 7, and the fixed block 907 is in a snap-fit sliding connection with the inner ring groove 905 and the groove 906, and a slag removal net bag 908 is connected to the bottom of the outer wall of the movable cylinder 904, and a scraper 909 for scraping the inner wall of the melting chamber 8 is connected to the end of the slag removal net bag 908.

[0027] The bending rod 902 is configured as an "L"-shaped structure, and the end of the bending rod 902 is threadedly connected to the inner wall of the ceramic rotating drum 901. The other end of the bending rod 902 is located in the outer ring groove 903 and is configured as a spherical shape. The bending rod 902 and the outer ring groove 903 are in a snap-fit sliding connection. The fixed block 907 is located in the inner ring groove 905 and is close to one end face of the strip groove 906 and is configured as a conical structure that is convenient for sliding into the strip groove 906.

[0028] Working principle: According to Figure 1As shown, first, the staff member opens the valve on the feeding pipe 405, making the feeding pipe 405 communicate with the melting cavity 8 of the furnace body 1. Start the auger rod 404 to cooperate with the feeding cylinder 402 to convey the material into the melting cavity 8 for heating and liquefaction. Then, the staff member performs slag removal on the liquefied molten aluminum. The staff member rotates the ceramic rotating cylinder 901, causing the bent rod 902 connected by threads to move into the melting cavity 8, pushing the movable cylinder 904 to move up and down along the stirring rotating shaft 7, so that the fixing block 907 connected to the outer wall of the stirring rotating shaft 7 moves from the annular groove 905 to the strip groove 906, and the slag removal net bag 908 connected to the bottom of the outer wall of the movable cylinder 904 is half immersed in the surface layer of the molten aluminum. Start the driving motor 6 to drive the stirring rotating shaft 7 to rotate, so that the stirring rotating shaft 7 drives the slag removal net bag 908 at the same time to collect and remove the floating slag on the surface of the liquefied molten aluminum. Through the setting of the outer annular groove 903, the bent rod 902 does not affect the rotation of the movable cylinder 904. After slag removal, reverse the above process to reset the slag removal structure 9. Open the discharge valve 11, so that the molten aluminum in the melting cavity 8 enters the casting mold 203 from the discharge port 10 for shaping. Start the air extraction and heat exchange mechanism 406, so that a large amount of heat generated in the cavity 201 during this process enters the air pipe 3 along with the air, flows into the heat conduction groove 403, and finally passes through the heat exchanger and other equipment of the air extraction and heat exchange mechanism 406 to cool the gas and then discharge it to the air purification equipment for purification and discharge into the outside after reaching the standard. Through the spiral winding setting of the heat conduction groove 403 on the feeding cylinder 402, the material in the feeding cylinder 402 can be preheated more fully, which is beneficial to the subsequent liquefaction of the material. The cover plate 5 can be conveniently opened through the mounting frame 401 and the electric telescopic rod 12. This is the working principle of the safe melting furnace for molten aluminum.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safety melting furnace for melting aluminum, comprising a furnace body (1), characterized in that: The bottom of the furnace body (1) is provided with a pouring structure (2), and an air delivery pipe (3) communicating with the pouring structure (2) is installed on the outer wall of the furnace body (1). The end of the air delivery pipe (3) is connected to a feeding structure (4). The end of the feeding structure (4) is connected to a cover plate (5), and the cover plate (5) is installed on the top of the furnace body (1). A driving motor (6) is installed on the top of the cover plate (5), and the output end of the driving motor (6) is connected to a stirring rotating shaft (7). The stirring rotating shaft (7) is located in the melting cavity (8), and the melting cavity (8) is opened at the top of the furnace body (1). A slag removing structure (9) is arranged between the stirring rotating shaft (7) and the cover plate (5), and a discharge port (10) is arranged between the melting cavity (8) and the pouring structure (2). A discharge valve (11) is clamped and slidably connected between the discharge port (10) and the outer wall of the furnace body (1). An electric telescopic rod (12) is connected between the cover plate (5) and the feeding structure (4), and a pressure relief valve (13) is arranged on the top of the cover plate (5).

2. The safety melting furnace for melting aluminum according to claim 1, characterized in that: The pouring structure (2) includes a cavity (201), an L-shaped moving bottom plate (202), a pouring mold (203), and an opening (204). A cavity (201) is opened at the bottom of the furnace body (1), and an opening (204) communicating with the cavity (201) is opened on the outer wall of the furnace body (1). An L-shaped moving bottom plate (202) is arranged in the cavity (201), and the vertical area of the L-shaped moving bottom plate (202) is closely attached to the opening (204). A pouring mold (203) for shaping molten aluminum is installed on the top of the L-shaped moving bottom plate (202).

3. A safety smelting furnace for smelting aluminum according to claim 1, characterized in that: The feeding structure (4) includes a mounting frame (401), a feeding cylinder (402), a heat conduction groove (403), a screw rod (404), a feeding pipe (405), and an air extraction and heat exchange mechanism (406). The mounting frame (401) is installed near the furnace body (1), and a feeding cylinder (402) is installed on the mounting frame (401). A screw rod (404) for conveying materials is installed in the feeding cylinder (402). A heat conduction groove (403) is opened in the wall of the feeding cylinder (402). One end of the heat conduction groove (403) is connected to the air delivery pipe (3), and the other end of the heat conduction groove (403) is connected to the air extraction and heat exchange mechanism (406). A feeding pipe (405) is installed at the bottom outlet of the feeding cylinder (402), and the end of the feeding pipe (405) is communicated with the cover plate (5).

4. The safety melting furnace for melting aluminum according to claim 3, characterized in that: The heat conduction groove (403) is spirally distributed in the feeding cylinder (402), and the air extraction and heat exchange mechanism (406) includes a set of heat dissipation processes of an air extractor and a heat exchanger.

5. The safety smelting furnace for smelting aluminum according to claim 1, characterized in that: The slag removal structure (9) includes a ceramic rotating cylinder (901), a bent rod (902), an outer ring groove (903), a movable cylinder (904), an inner ring groove (905), a strip groove (906), a fixed block (907), a slag removal mesh bag (908), and a scraper (909). A ceramic rotating cylinder (901) is rotatably connected to the top of the cover plate (5), and a bent rod (902) is arranged inside the ceramic rotating cylinder (901), and the end of the bent rod (902) penetrates through the cover plate (5) and is located in the outer ring groove (903). The outer ring groove (903) is opened on the outer wall of the movable cylinder (904), and the movable cylinder (904) is slidably sleeved on the outer wall of the stirring rotating shaft (7). An inner ring groove (905) is opened on the inner wall of the movable cylinder (904), and a plurality of strip grooves (906) are opened on the inner wall of the movable cylinder (904) at equal angles about its center line, and each strip groove (906) communicates with the inner ring groove (905). At least one fixed block (907) is connected to the outer wall of the stirring rotating shaft (7), and the fixed block (907) is in a snap-fit sliding connection with the inner ring groove (905) and the strip groove (906). A slag removal mesh bag (908) is connected to the bottom of the outer wall of the movable cylinder (904), and a scraper (909) for scraping the inner wall of the melting cavity (8) is connected to the end of the slag removal mesh bag (908).

6. The safety melting furnace for melting aluminum according to claim 5, wherein: The bent rod (902) is arranged in an "L" shape, and the end of the bent rod (902) is threadedly connected to the inner wall of the ceramic rotating cylinder (901). The other end of the bent rod (902) is spherical in the outer ring groove (903), and the bent rod (902) is in a snap-fit sliding connection with the outer ring groove (903). The end face of the fixed block (907) close to the strip groove (906) in the inner ring groove (905) is arranged in a conical structure for facilitating sliding into the strip groove (906).

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