Melting device for aluminum ingot production

Abstract

The utility model relates to the technical field of aluminum ingot production, and discloses a melting device for aluminum ingot production, which comprises a base and a melting furnace shell, and further comprises a heating assembly arranged on the inner wall of the melting furnace shell and used for accelerating the melting speed of aluminum materials in a melting crucible; and the preheating assembly is arranged in the first transmission shaft and can keep the stirring paddle board in a high-temperature state before the stirring paddle board enters the smelting crucible. According to the utility model, an aluminum material is melted into a liquid state through the heating assembly, and the stirring paddle plate can be heated through the preheating assembly before entering the smelting crucible, so that the first transmission shaft can be integrally fused into a smelting environment more quickly, and the influence on the stirring efficiency and the stirring effect due to solidification and wrapping of the aluminum liquid can be avoided; homogenization of the temperature and components of the molten aluminum is facilitated; the second transmission assembly is matched with the first transmission assembly, the stirring paddle plate can be driven to be away from the smelting crucible as a whole, workers can conveniently conduct feeding and discharging work, and the stirring paddle plate can be conveniently cleaned, maintained and overhauled.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum ingot production, in particular to a melting device for aluminum ingot production. Background Art

[0002] Aluminum is a silvery-white metal, ranking third in the earth's crust after oxygen and silicon. It is the non-ferrous metal with the second largest production and usage in the world after steel. It is easy to process, corrosion-resistant, and lightweight, and is therefore widely used in ships, airplanes, automobiles and other fields. Currently, a certain amount of scraps will be produced during the processing of aluminum profiles. The staff will use melting equipment to recycle these remaining scraps, melt them into aluminum ingots after hot melting, and facilitate subsequent reuse.

[0003] When using the existing melting device for aluminum ingot production, in order to achieve uniform temperature and composition of the aluminum liquid inside the furnace, shorten the melting time and improve the yield, the staff will stir the molten aluminum liquid. In this process, due to the large temperature difference between the stirring shaft and the aluminum liquid inside the furnace, the stirring shaft cannot be well integrated into the smelting environment. After entering the furnace, a part of the aluminum liquid on the periphery of the stirring shaft will solidify on the outside of the shaft body, which not only reduces the stirring effect and stirring efficiency, but also affects the melting process of the aluminum liquid, and is not easy to clean after taking it out of the furnace, which is not conducive to the continuous production of aluminum ingots. Utility Model Content

[0004] The purpose of the present invention is to provide a melting device for aluminum ingot production to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a melting device for aluminum ingot production, comprising a base and a furnace shell, wherein an annular seat is fixedly connected to the outside of the furnace shell, a plurality of pillars are symmetrically mounted on the bottom of the annular seat, and the bottom ends of the pillars are connected to the base, and a smelting crucible for holding aluminum material is provided inside the furnace shell, and further comprising:

[0006] A heating assembly is provided on the inner wall of the furnace shell for accelerating the melting speed of the aluminum material inside the melting crucible. A first transmission shaft is coaxially provided inside the melting crucible. A first strip rod is provided above the melting crucible. The top end of the first transmission shaft is rotatably connected to the first strip rod via a bearing. A plurality of stirring paddles are symmetrically installed at the bottom end of the first transmission shaft.

[0007] A preheating component is arranged inside the first transmission shaft to keep the stirring paddle in a high temperature state before entering the melting crucible. A supporting platform is provided above the side of the base away from the furnace shell. The top of the supporting platform is provided with a first transmission component for driving the stirring paddle to rotate and vertically lift and displace. The bottom of the supporting platform is provided with a second transmission component for driving the stirring paddle to quickly enter and exit the melting crucible.

[0008] Preferably, the heating component includes a furnace lining fixed to the inner wall of the furnace shell, the smelting crucible is located inside the furnace lining, a crucible jacket is provided between the furnace lining and the smelting crucible, a fixing groove is provided on the inner wall of the crucible jacket, an electric heating ring is installed inside the fixing groove, one side of the electric heating ring is in contact with the smelting crucible, a drain port is provided at the bottom of the smelting crucible, the bottom end of the drain port extends to the outside of the furnace shell, a high-temperature valve is installed inside the drain port, the smelting crucible is made of quartz or graphite material, and the crucible jacket is made of high-purity quartz or ceramic material.

[0009] Preferably, the preheating assembly includes an electric heating wire fixed inside the stirring paddle, a temperature control switch is connected in series to the electric heating wire, a conductive slip ring is provided on the outer side of the top end of the first transmission shaft, the conductive slip ring is fixedly installed on the first strip rod, a cable groove is opened inside the first transmission shaft to facilitate the passage of the wire, a thermocouple is fixedly installed on one side of the cable groove, the thermocouple and the temperature control switch are both electrically connected to the electric heating wire, and the electric heating wire is connected to the output end of the conductive slip ring through a wire.

[0010] Preferably, a heat-insulating sleeve is provided on the outside of the conductive slip ring for preventing the circuit conductor from melting due to high temperature. The heat-insulating sleeve is made of ceramic fiber or glass fiber material and is fixedly mounted on the first strip rod.

[0011] The top end of the first gear is connected with the support frame, and the top end of the first gear is connected with the support frame, and the top of the first gear is connected with the support frame.

[0012] Preferably, the second transmission assembly includes a second fixed cylinder fixed to the bottom of the supporting platform, a first fixed cylinder is provided on the periphery of the second fixed cylinder, the bottom of the first fixed cylinder is connected to the base, a gear ring is fixedly connected to the inner wall of the second fixed cylinder, a second motor is fixedly installed on the bottom of the base, the output end of the second motor is fixedly connected to the second transmission shaft, the top end of the second transmission shaft passes through the interior of the second fixed cylinder and is fixedly connected to the gear, one side of the gear is meshed with the gear ring, an annular slider is fixedly connected to the outer side of the second fixed cylinder, an annular groove corresponding to the annular slider is opened on the inner wall of the first fixed cylinder, and the annular slider is located inside the annular groove.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] The utility model increases the temperature inside the melting crucible by the heating component so that the aluminum material is melted into a liquid state. After most of the aluminum material is melted into a liquid state, the preheating component can be used to heat the stirring paddle before the stirring paddle enters the melting crucible. In this way, the first transmission shaft as a whole can be integrated into the melting environment more quickly, the heat transfer time is reduced, the melting speed of the aluminum material is accelerated, and the aluminum liquid can be prevented from solidifying and wrapping around the outer side of the stirring paddle, affecting its stirring efficiency and stirring effect, which is beneficial to the uniformity of the temperature and composition of the aluminum liquid inside the melting crucible. The aluminum liquid after melting can be led out from the discharge port to the outside for casting and molding; the second transmission component cooperates with the first transmission component to drive the stirring paddle as a whole away from the melting crucible, which is convenient for the staff to carry out loading and unloading work and convenient for cleaning, maintenance and repair of the stirring paddle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the melting device for aluminum ingot production provided by the utility model;

[0016] Figure 2 A schematic diagram of the internal structure of the furnace shell provided by the utility model;

[0017] Figure 3 This is a schematic structural diagram of the second transmission assembly provided by the utility model;

[0018] Figure 4 This is a schematic diagram of the heating component structure provided by the utility model;

[0019] Figure 5 This is a schematic structural diagram of the first transmission assembly provided by the utility model;

[0020] Figure 6 This is a schematic diagram of the preheating component structure provided by the utility model.

[0021] In the figure: 1, base; 2, furnace shell; 3, annular seat; 4, support; 5, melting crucible; 6, heating assembly; 61, crucible jacket; 62, fixing groove; 63, electric heating ring; 64, furnace lining; 7, first bar; 8, first transmission shaft; 9, stirring paddle; 10, first transmission assembly; 101, column; 102, second bar; 103, third bar; 104, lifting cylinder; 105, guide rod; 106, first motor; 107, support Plate; 108, reinforcement plate; 11, supporting platform; 12, second transmission assembly; 121, first fixed cylinder; 122, second fixed cylinder; 123, annular slider; 124, annular slide groove; 125, ring gear; 126, gear; 127, second transmission shaft; 128, second motor; 13, preheating assembly; 131, electric heating wire; 132, cable groove; 133, temperature control switch; 134, thermocouple; 14, thermal insulation sleeve; 15, conductive slip ring; 16, drain port. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-6As shown, a melting device for aluminum ingot production includes a base 1 and a furnace shell 2. An annular seat 3 is fixedly connected to the outside of the furnace shell 2. A plurality of pillars 4 are symmetrically installed on the bottom of the annular seat 3. The bottom ends of the pillars 4 are connected to the base 1. A smelting crucible 5 for holding aluminum material is provided inside the furnace shell 2. The device also includes: a heating component 6 disposed on the inner wall of the furnace shell 2 for accelerating the melting speed of the aluminum material inside the smelting crucible 5. By providing the heating component 6, the temperature inside the smelting crucible 5 can be increased so that the aluminum material can be quickly melted into a liquid state, facilitating the subsequent casting of the aluminum ingots. A first transmission shaft 8 is coaxially provided inside the smelting crucible 5, and a first strip rod 7 is provided above the smelting crucible 5. The top of the first transmission shaft 8 is rotatably connected to the first strip rod 7 through a bearing, and a plurality of stirring paddles 9 are symmetrically installed at the bottom of the first transmission shaft 8. The first transmission shaft 8 drives the stirring paddles 9 to stir the aluminum liquid inside the smelting crucible 5, which can make the temperature of the aluminum liquid more uniform, which is beneficial to improving the heating efficiency and melting speed of the aluminum liquid; a preheating component 13 is arranged inside the first transmission shaft 8 to keep the stirring paddles 9 in a high temperature state before entering the smelting crucible 5. A preheating assembly 13 is provided to heat the stirring paddle 9 before it enters the smelting crucible 5, so that the first transmission shaft 8 as a whole can be integrated into the smelting environment more quickly, reducing the time of heat transfer, accelerating the melting speed of the aluminum material, and preventing the aluminum liquid from solidifying and wrapping around the outside of the stirring paddle 9 to affect its stirring efficiency and stirring effect, which is beneficial to the uniformity of the temperature and composition of the aluminum liquid inside the smelting crucible 5; a supporting platform 11 is provided on the upper side of the base 1 away from the furnace shell 2, and a first transmission group is provided on the top of the supporting platform 11 for driving the stirring paddle 9 to rotate and vertically lift and displace The supporting platform 11 is provided with a second transmission component 12 for driving the stirring paddle 9 to quickly enter and exit the melting crucible 5. By providing the second transmission component 12 and cooperating with the first transmission component 10, the stirring paddle 9 can be driven to move away from the melting crucible 5 as a whole, which is convenient for the staff to carry out loading and unloading work, and is also convenient for cleaning, maintenance and repair of the stirring paddle 9.

[0024] The heating assembly 6 includes a furnace lining 64 fixed to the inner wall of the furnace shell 2, and the smelting crucible 5 is located inside the furnace lining 64. A crucible jacket 61 is provided between the furnace lining 64 and the smelting crucible 5. A fixing groove 62 is provided on the inner wall of the crucible jacket 61. An electric heating ring 63 is installed inside the fixing groove 62. One side of the electric heating ring 63 is in contact with the smelting crucible 5. A drain port 16 is provided at the bottom of the smelting crucible 5. The bottom end of the drain port 16 extends to the outside of the furnace shell 2. A high-temperature valve is installed inside the drain port 16. The smelting crucible 5 is made of quartz or graphite material, and the crucible jacket 61 is made of high-purity quartz or ceramic material. Figure 2 、 Figure 4As shown, the aluminum ingot furnace structure is constituted by arranging the furnace shell 2, the melting crucible 5, the melting furnace lining 64, the crucible jacket 61, and the electric heating ring 63. After the aluminum material is placed in the melting crucible 5, the electric heating ring 63 is started to melt the aluminum material quickly into liquid. The staff then opens the high-temperature valve inside the drain port 16 to lead out the aluminum liquid, which facilitates the casting of the aluminum ingot.

[0025] The preheating assembly 13 includes an electric heating wire 131 fixed to the inside of the stirring paddle 9, a temperature control switch 133 is connected in series to the electric heating wire 131, a conductive slip ring 15 is provided on the outer side of the top of the first transmission shaft 8, and the conductive slip ring 15 is fixedly mounted on the first bar 7. A cable groove 132 is provided inside the first transmission shaft 8 to facilitate the passage of the wire, and a thermocouple 134 is fixedly mounted on one side of the cable groove 132. The thermocouple 134 and the temperature control switch 133 are both electrically connected to the electric heating wire 131, and the electric heating wire 131 is connected to the output end of the conductive slip ring 15 through a wire. Figure 6 As shown, by setting a conductive slip ring 15, power can be provided to the electric heating wire 131 when the first transmission shaft 8 rotates without twisting the wire, and then the electric heating wire 131 is used to preheat the first transmission shaft 8 and the stirring paddle 9. It should be noted that the melting point of aluminum is 660.4°C. The staff can set the temperature value of the electric heating wire 131 according to actual needs. When the thermocouple 134 detects that the temperature of the electric heating wire 131 reaches the preset value, the temperature control switch 133 will be disconnected and the electric heating wire 131 will stop heating. In this way, the stirring paddle 9 is heated before it enters the melting crucible 5, so that the first transmission shaft 8 as a whole can be integrated into the melting environment more quickly, reducing the heat transfer time and accelerating the melting rate of the aluminum material.

[0026] The outer side of the conductive slip ring 15 is provided with an insulation sleeve 14 for preventing the circuit conductor from melting due to high temperature. The insulation sleeve 14 is made of ceramic fiber or glass fiber material. The insulation sleeve 14 is fixedly mounted on the first strip rod 7. Figure 5 As shown, by providing the heat insulating sleeve 14, the heat exchange rate between the conductive slip ring 15 and the outside can be slowed down, thereby avoiding the occurrence of disconnection, short circuit, etc. caused by high temperature melting of the conductive slip ring 15 shell, thereby improving safety.

[0027] The first transmission assembly 10 includes a column 101 fixed to the top of the supporting platform 11, and a reinforcing plate 108 is provided on the side of the column 101 away from the furnace shell 2. The reinforcing plate 108 is triangular in design and is connected to the column 101 and the supporting platform 11 respectively. A third bar 103 is vertically installed in the middle of the other side of the column 101. A lifting cylinder 104 is provided below the third bar 103. The bottom end of the lifting cylinder 104 is connected to the supporting platform 11, and the top end of the lifting cylinder 104 passes through the third bar 103 and is connected to the first bar 7. The first bar A second strip rod 102 is provided above the shaped rod 7, one end of the second strip rod 102 is connected to the column 101, a guide rod 105 is provided between the second strip rod 102 and the third strip rod 103, the guide rod 105 is respectively connected to the second strip rod 102 and the third strip rod 103, one end of the first strip rod 7 is slidably connected to the guide rod 105, the other end of the first strip rod 7 is fixedly connected to a support plate 107, a first motor 106 is fixedly installed on the top of the support plate 107, the top end of the first transmission shaft 8 passes through the support plate 107 and is connected to the output end of the first motor 106, as shown in FIG. Figure 2 、 Figure 5 As shown, the lifting cylinder 104 and the first motor 106 can drive the stirring paddle 9 to rotate while vertically rising and falling inside the melting crucible 5, so as to make the temperature of the aluminum liquid at the top and bottom layers uniform. The reinforcing plate 108 and the guide rod 105 are provided to improve the working stability of the stirring paddle 9.

[0028] The second transmission assembly 12 includes a second fixed cylinder 122 fixed to the bottom of the supporting platform 11, a first fixed cylinder 121 is provided on the periphery of the second fixed cylinder 122, the bottom of the first fixed cylinder 121 is connected to the base 1, a gear ring 125 is fixedly connected to the inner wall of the second fixed cylinder 122, a second motor 128 is fixedly installed at the bottom of the base 1, the output end of the second motor 128 is fixedly connected to a second transmission shaft 127, the top of the second transmission shaft 127 passes through the interior of the second fixed cylinder 122 and is fixedly connected to a gear 126, one side of the gear 126 is meshed with the gear ring 125, an annular slider 123 is fixedly connected to the outer side of the second fixed cylinder 122, an annular groove 124 corresponding to the annular slider 123 is opened on the inner wall of the first fixed cylinder 121, and the annular slider 123 is located inside the annular groove 124, as shown in FIG. Figure 2 、 Figure 3 As shown, the second motor 128, the second transmission shaft 127, the gear 126, and the ring gear 125 are used to drive the supporting platform 11 to rotate, and then cooperate with the first transmission assembly 10 to make the stirring blade 9 as a whole away from the melting crucible 5, so as to facilitate the staff to load and unload materials.

[0029] Working principle: First, the staff puts the aluminum material to be melted into the melting crucible 5, and then increases the internal temperature of the melting crucible 5 through the heating component 6 to melt the aluminum material into a liquid state. After most of the aluminum material is melted into a liquid state, the stirring paddle 9 can be heated by the preheating component 13 before entering the melting crucible 5. In this way, the first transmission shaft 8 as a whole can be integrated into the melting environment more quickly, reducing the heat transfer time, accelerating the melting speed of the aluminum material, and avoiding the solidification of the aluminum liquid and wrapping around the outside of the stirring paddle 9, affecting its stirring efficiency and stirring effect, which is beneficial to the uniformity of the temperature and composition of the aluminum liquid inside the melting crucible 5. After melting, the aluminum liquid can be drawn out from the drain port 16 to the outside for casting and molding, and the second transmission component 12 cooperates with the first transmission component 10 to drive the stirring paddle 9 as a whole away from the melting crucible 5, which is convenient for the staff to load and unload materials, and at the same time facilitates the cleaning, maintenance and inspection of the stirring paddle 9.

[0030] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A melting device for aluminum ingot production, comprising a base (1) and a furnace shell (2), characterized in that: An annular seat (3) is fixedly connected to the outside of the furnace shell (2), and a plurality of pillars (4) are symmetrically installed on the bottom of the annular seat (3), and the bottom ends of the pillars (4) are connected to the base (1). A smelting crucible (5) for holding aluminum material is provided inside the furnace shell (2), and further comprises: A heating assembly (6) is provided on the inner wall of the melting furnace shell (2) for accelerating the melting speed of the aluminum material inside the melting crucible (5); a first transmission shaft (8) is coaxially provided inside the melting crucible (5); a first strip rod (7) is provided above the melting crucible (5); the top end of the first transmission shaft (8) is rotatably connected to the first strip rod (7) via a bearing; and a plurality of stirring paddles (9) are symmetrically installed at the bottom end of the first transmission shaft (8); A preheating assembly (13) is arranged inside the first transmission shaft (8) to keep the stirring paddle (9) in a high temperature state before entering the melting crucible (5); a supporting platform (11) is provided above the side of the base (1) away from the furnace shell (2); a first transmission assembly (10) is provided on the top of the supporting platform (11) for driving the stirring paddle (9) to rotate and vertically lift and displace; and a second transmission assembly (12) is provided on the bottom of the supporting platform (11) for driving the stirring paddle (9) to quickly enter and exit the melting crucible (5).

2. The aluminum ingot production melting device according to claim 1, characterized in that: The heating assembly (6) includes a furnace lining (64) fixed on the inner wall of the furnace shell (2), the melting crucible (5) is located inside the furnace lining (64), a crucible jacket (61) is provided between the furnace lining (64) and the melting crucible (5), a fixing groove (62) is provided on the inner wall of the crucible jacket (61), an electric heating ring (63) is installed inside the fixing groove (62), one side of the electric heating ring (63) is in contact with the melting crucible (5), a drain port (16) is provided at the bottom of the melting crucible (5), the bottom end of the drain port (16) passes through the outside of the furnace shell (2), a high-temperature valve is installed inside the drain port (16), the melting crucible (5) is made of quartz or graphite material, and the crucible jacket (61) is made of high-purity quartz or ceramic material.

3. The aluminum ingot production melting device according to claim 1, characterized in that: The preheating assembly (13) includes an electric heating wire (131) fixed inside the stirring paddle (9), a temperature control switch (133) is connected in series to the electric heating wire (131), a conductive slip ring (15) is provided on the outer side of the top end of the first transmission shaft (8), and the conductive slip ring (15) is fixedly mounted on the first strip rod (7), and a cable through groove (132) is provided inside the first transmission shaft (8) for facilitating the passage of a wire, a thermocouple (134) is fixedly mounted on one side of the cable through groove (132), and the thermocouple (134) and the temperature control switch (133) are both electrically connected to the electric heating wire (131), and the electric heating wire (131) is connected to the output end of the conductive slip ring (15) through a wire.

4. The aluminum ingot production melting device according to claim 3, characterized in that: The outer side of the conductive slip ring (15) is provided with a heat-insulating sleeve (14) for preventing the circuit conductor from melting due to high temperature. The heat-insulating sleeve (14) is made of ceramic fiber or glass fiber material. The heat-insulating sleeve (14) is fixedly mounted on the first strip rod (7).

5. The aluminum ingot production melting device according to claim 1, characterized in that: The first transmission assembly (10) includes a column (101) fixed to the top of the supporting platform (11), and a reinforcing plate (108) is provided on the side of the column (101) away from the furnace shell (2). The reinforcing plate (108) is triangular in design and is connected to the column (101) and the supporting platform (11) respectively. A third bar (103) is vertically installed in the middle of the other side of the column (101), and a lifting cylinder (104) is provided below the third bar (103). The bottom end of the lifting cylinder (104) is connected to the supporting platform (11), and the top end of the lifting cylinder (104) passes through the third bar (103) and is connected to the first bar (7). A second strip rod (102) is provided above the strip rod (7), one end of the second strip rod (102) is connected to the column (101), a guide rod (105) is provided between the second strip rod (102) and the third strip rod (103), the guide rod (105) being connected to the second strip rod (102) and the third strip rod (103) respectively, one end of the first strip rod (7) being slidably connected to the guide rod (105), the other end of the first strip rod (7) being fixedly connected to a support plate (107), a first motor (106) being fixedly installed on the top of the support plate (107), and the top end of the first transmission shaft (8) passing through the support plate (107) and being connected to the output end of the first motor (106).

6. The aluminum ingot production melting device according to claim 1, characterized in that: The second transmission assembly (12) comprises a second fixed cylinder (122) fixed to the bottom of the supporting platform (11), a first fixed cylinder (121) is provided on the periphery of the second fixed cylinder (122), the bottom of the first fixed cylinder (121) is connected to the base (1), a gear ring (125) is fixedly connected to the inner wall of the second fixed cylinder (122), a second motor (128) is fixedly installed on the bottom of the base (1), an output end of the second motor (128) is fixedly connected to a second transmission shaft (127), a top end of the second transmission shaft (127) passes through the interior of the second fixed cylinder (122) and is fixedly connected to a gear (126), one side of the gear (126) is meshed with the gear ring (125), an annular slider (123) is fixedly connected to the outer side of the second fixed cylinder (122), an annular groove (124) corresponding to the annular slider (123) is provided on the inner wall of the first fixed cylinder (121), and the annular slider (123) is located inside the annular groove (124).

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