Aluminum alloy transfer heat preservation equipment

Abstract

The invention relates to the technical field of heat preservation equipment, in particular to aluminum alloy transfer heat preservation equipment which comprises a heat preservation furnace, a hearth is arranged in the heat preservation furnace, a water adding opening and a water taking opening are formed in the two ends of the hearth respectively, and a feeding opening is formed in the top face of the heat preservation furnace; the feeding trolley is connected with an external conveying rail, the feeding trolley is arranged above the heat preservation furnace, and a hook is fixedly installed on the bottom surface of the feeding trolley; the transfer ladle is rotationally connected with the hook, and a thermocouple is arranged on the side face of the transfer ladle; the possibility that the molten aluminum loses a large amount of heat can be reduced, and meanwhile the possibility that the molten aluminum is oxidized is reduced.

Description

Technical Field

[0001] This invention relates to the field of thermal insulation equipment technology, specifically to aluminum alloy transfer thermal insulation equipment. Background Technology

[0002] In the production process of aluminum and aluminum alloy melting and die casting, aluminum ingots need to be placed in a melting furnace first, and flames are sprayed from the nozzle to melt the aluminum ingots. The molten aluminum then enters a holding furnace, which keeps the molten aluminum at a certain temperature to maintain its molten state.

[0003] However, when the molten aluminum is transferred from the aluminum holding furnace to other industrial furnaces such as composite furnaces, the existing aluminum holding furnace needs to be used in conjunction with the molten aluminum diversion channel to achieve the purpose of transferring the molten aluminum. However, during the process of transferring molten aluminum in the molten aluminum diversion channel, the molten aluminum is completely exposed to the air, resulting in a large loss of heat, and the molten aluminum is prone to oxidizing by absorbing air. Summary of the Invention

[0004] In view of the above-mentioned shortcomings in the existing technology, the present invention provides an aluminum alloy transfer and heat preservation device to solve the problem that in the process of transferring molten aluminum in the existing molten aluminum heat preservation furnace, the molten aluminum is completely exposed to the air, resulting in a large amount of heat loss, and the molten aluminum is prone to absorbing air and oxidizing.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: An aluminum alloy transfer and insulation device includes an insulation furnace with a furnace chamber, a water inlet and an outlet at both ends of the furnace chamber, and a feeding port on the top surface of the insulation furnace; a feeding trolley connected to an external transport track and positioned above the insulation furnace, with a hook fixedly installed on its bottom surface; and a transfer bag rotatably connected to the hook, with a thermocouple installed on its side.

[0006] In this way, molten aluminum is poured into the holding furnace through the water inlet. After the furnace is conditioned and allowed to stand, the feeding car transports the transfer package to the water outlet. Molten aluminum is then taken from the water outlet. While the molten aluminum is placed inside the transfer package, thermocouples heat the molten aluminum to maintain its temperature. This structure can reduce the possibility of the molten aluminum losing a lot of heat and also reduce the possibility of oxidation.

[0007] Furthermore, the inner wall of the furnace includes a working layer and an insulation layer. The working layer is composed of non-stick aluminum castable, and the insulation layer is composed of aluminum foil and two layers of aluminum silicate plates of different thicknesses. This can reduce the possibility of aluminum liquid penetration and corrosion, and at the same time reduce the possibility of aluminum liquid losing a large amount of heat.

[0008] Furthermore, the interior of the furnace is L-shaped, which improves the utilization of space and reduces the flow rate at the corners, allowing for the initial settling of the molten aluminum.

[0009] Furthermore, the interior of the furnace is divided into a reaction zone, a transition zone, and a separation zone. The angle between the reaction zone and the horizontal plane is 40-50°, and the angle between the separation zone and the horizontal plane is 1.5-3.5°.

[0010] In this way, after the molten aluminum enters the furnace through the water inlet, it first enters the reaction zone with a steep slope. The steep slope converts the gravitational potential energy of the molten aluminum into intense kinetic energy and turbulence, which disperses the newly added molten aluminum, distributes it evenly, and breaks up the oxide film on the surface of the molten aluminum. Then the molten aluminum enters the transition zone. At the corner of the transition zone, the kinetic energy carried by the molten aluminum is consumed, reducing the flow rate of the molten aluminum. The heavier impurities carried by the molten aluminum settle at the bottom of the transition zone. Finally, the molten aluminum slowly passes through the separation zone. The long and gentle slope of the separation zone gives the molten aluminum enough time to settle, and the impurities carried by the molten aluminum float to the surface. This structure can improve the separation effect of the molten aluminum, thereby improving the quality of the molten aluminum.

[0011] Furthermore, the feeding vehicle includes a lifting box connected to an external transport track. A limit plate is fixedly installed on the bottom surface of the lifting box, and a lifting device is fixedly installed inside the limit plate. The bottom surface of the lifting device is fixedly connected to the hook, thereby facilitating the transfer of materials to various processes during transportation and improving work efficiency.

[0012] Furthermore, the top surfaces of the water inlet and outlet are provided with heat-insulating covers, and the top surface of the feeding port is provided with a furnace cover, thereby reducing the possibility of a large amount of heat loss from the molten aluminum.

[0013] Furthermore, a support device is provided between the top surface of the feeding port and the furnace cover, which can reduce the possibility of the furnace cover accidentally falling and injuring nearby workers.

[0014] Furthermore, the transfer bag includes a storage bag rotatably installed at the bottom of the hook. The storage bag is cylindrical in shape, with an arc-shaped cover plate on the top surface. A discharge nozzle is fixedly installed on the side of the storage bag. The discharge nozzle is a variable-diameter round tube, with the diameter of the discharge end being smaller than the diameter of the inlet end. The thermocouple is fixedly installed on the side of the storage bag, facing the discharge nozzle. The surface of the storage bag is provided with a contact layer and a heat insulation layer in sequence. The bottom surface of the storage bag is symmetrically fixed with pins, and connecting plates are symmetrically fixed between the pins. This enables the molten aluminum to form a continuous, stable, and dense stream, which facilitates the control of the pouring angle of the molten aluminum.

[0015] Furthermore, the angle between the top surface of the discharge nozzle and the horizontal plane is 15-20°, and the pouring angle of the transfer ladle is 45-55°, which can reduce the flow rate of molten aluminum when it flows down and make it easier to control the landing point of molten aluminum in the furnace.

[0016] Furthermore, the bottom surface of the storage bag is chamfered at 45°, which can guide the molten aluminum to flow smoothly to the discharge nozzle, and at the same time facilitate the discharge of filter residue and other residues from the storage bag, reducing the difficulty of cleaning for workers. Attached Figure Description

[0017] Figure 1 This is a front view structural schematic diagram of an embodiment of the aluminum alloy transfer and insulation equipment of the present invention; Figure 2 This is a cross-sectional view of the insulation furnace in an embodiment of the aluminum alloy transfer and insulation equipment of the present invention; Figure 3 This is a cross-sectional view of the insulation furnace in an embodiment of the aluminum alloy transfer and insulation equipment of the present invention; Figure 4 This is a cross-sectional view of the feeding vehicle in an embodiment of the aluminum alloy transfer and insulation equipment of the present invention. Figure 5 This is a cross-sectional view of the transfer package in an embodiment of the aluminum alloy transfer and insulation equipment of the present invention; Figure 6 This is a top view of the transfer package in an embodiment of the aluminum alloy transfer and insulation equipment of the present invention; Figure 7 This is a bottom view of the transfer bag in an embodiment of the aluminum alloy transfer insulation equipment of the present invention; Reference numerals in the accompanying drawings: 1. Insulation furnace, 101. Furnace chamber, 102. Water inlet, 103. Water outlet, 104. Material inlet, 105. Working layer, 106. Insulation layer, 107. Insulation cover, 108. Furnace cover; 2. Feeding cart; 201. Hook; 202. Lifting box; 203. Limiting plate; 204. Lifting device; 3. Transfer bag, 301. Thermocouple, 302. Storage bag, 303. Cover plate, 304. Discharge nozzle, 305. Contact layer, 306. Insulation layer, 307. Pin, 308. Connecting plate; Reaction zone 401, transition zone 402, separation zone 403. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0020] Example 1: like Figures 1-7 As shown, the aluminum alloy transfer and heat preservation equipment of the present invention includes a heat preservation furnace 1, a feeding trolley 2, and a transfer bag 3. The heat preservation furnace 1 is provided with a furnace chamber 101. A water inlet 102 and a water outlet 103 are respectively provided at both ends of the furnace chamber 101. A feeding port 104 is opened on the top surface of the heat preservation furnace 1. A heat preservation cover 107 is provided on the top surface of the water inlet 102 and the water outlet 103. A furnace cover 108 is provided on the top surface of the feeding port 104. A support device is provided between the top surface of the feeding port 104 and the furnace cover 110.

[0021] The feeding vehicle 2 includes a lifting box 202 connected to an external transport track. A limit plate 203 is fixedly installed on the bottom surface of the lifting box 202. A lifting device 204 is fixedly installed inside the limit plate 203. A hook 201 is fixedly connected to the bottom surface of the lifting device 204. The bottom surface of the hook 201 is rotatably connected to the transfer bag 3.

[0022] The transfer bag 3 includes a storage bag 302 that is rotatably connected to the bottom of the hook 201. A thermocouple 301 is provided on the side of the storage bag 302. The storage bag 302 is cylindrical in shape. An arc-shaped cover plate 303 is provided on the top surface of the storage bag 302. A discharge nozzle 304 is fixedly installed on the side of the storage bag 302. The discharge nozzle 304 is a variable diameter round tube. The diameter of the discharge end of the discharge nozzle 304 is smaller than the diameter of the inlet end. The bottom surface of the storage bag 301 has a 45° chamfer. The surface of the storage bag 301 is provided with a contact layer 305 and a heat insulation layer 306 in sequence. The bottom surface of the storage bag 301 is symmetrically fixed with pins 307, and connecting plates 308 are symmetrically fixed between the pins 307.

[0023] The inner wall of the furnace 101 includes a working layer 105 and an insulation layer 106. The working layer 105 is composed of non-stick aluminum casting material, and the insulation layer 106 is composed of aluminum foil and two layers of aluminum silicate plates with different thicknesses. Specifically, the two aluminum silicate plates are a thin plate with a thickness of 50 mm and a thick plate with a thickness of 175 mm. The thick plate and the aluminum foil are in contact with the non-stick aluminum casting material to provide sufficient support for the working layer 105 and to insulate most of the heat. The outer side is a thin plate with a thickness of 50 mm to further insulate the heat and keep the molten aluminum warm. The interior of the furnace 101 is L-shaped. The internal channels of the L-shape are divided into a reaction zone 401, a transition zone 402, and a separation zone 403. The angle between the reaction zone 401 and the horizontal plane is 40-50°, the angle between the separation zone 403 and the horizontal plane is 1.5-3.5°, the angle between the top surface of the discharge nozzle 303 and the horizontal plane is 15-20°, and the pouring angle of the transfer ladle 3 is 45-55°. Specifically, the molten aluminum flows down through the discharge nozzle 303, which controls the pouring angle, and forms a continuous, stable, and dense stream before being poured into the furnace 101, thereby controlling the landing point in the reaction zone 401.

[0024] Example 2: Example 2 has the same features as Example 1, except that: When pouring in molten aluminum, a refining gas is simultaneously introduced, specifically argon. This way, after the molten aluminum enters reaction zone 401, the steep slope converts the gravitational potential energy of the molten aluminum into intense kinetic energy and turbulence. The intense turbulence can break the refining gas into extremely fine bubbles, maximizing the gas-liquid contact area and improving the efficiency of hydrogen removal. Then, after the molten aluminum enters the transition zone 402, the corner of the transition zone 402 consumes the kinetic energy carried by the molten aluminum, causing the molten aluminum to undergo preliminary sedimentation. Bubbles generated by hydrogen rise to the surface, while larger impurities are deposited at the corner of the transition zone 402. Finally, the molten aluminum enters the long, gentle slope of the separation zone 403, allowing the tiny bubbles and small inclusions that failed to float completely in the transition zone 402 to have sufficient time and a calm environment to continue floating to the surface, thus improving the cleanliness of the molten aluminum.

[0025] Example 3: Example 3 has the same features as Example 2, except that: The reaction zone 401 has an angle of 42.66° with the horizontal plane, the separation zone 403 has an angle of 3.09° with the horizontal plane, the top surface of the discharge nozzle 303 has an angle of 17.48° with the horizontal plane, and the pouring angle of the transfer bag 3 is 50°. In this way, the molten aluminum poured out of the discharge nozzle 303 can be controlled to land at one-third of the way up the steep slope of the reaction zone 401. Under this condition, the steep slope can be fully utilized for the reaction, reducing the oxidation effect and achieving the best efficiency in kinetic energy transfer.

[0026] The above are merely embodiments of the present invention. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, and are capable of using conventional experimental methods prior to that date. They can improve and implement the present invention based on the guidance provided in this application and their own capabilities. Typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention. These modifications and improvements should also be considered within the scope of protection of the present invention, and will not affect the effectiveness of the invention or the practicality of the patent.

Claims

1. An aluminium alloy transfer heat retention device characterised in that, Include: The holding furnace (1), the hearth (101) is arranged in the holding furnace (1), the water inlet (102) and the water outlet (103) are arranged at both ends of the hearth (101) respectively, the feeding opening (104) is opened on the top surface of the holding furnace (1); The feeding trolley (2) is connected with the transport track outside, the feeding trolley (2) is arranged above the holding furnace (1), the hook (201) is fixedly installed on the bottom surface of the feeding trolley (2); The transfer bag (3) is rotatably connected with the hook (201), and the thermocouple (301) is arranged on the side surface of the transfer bag (3).

2. The aluminum alloy transfer hurn has of claim 1, wherein: The inner wall of the hearth (101) comprises a working layer (105) and a heat preservation layer (106), the working layer (105) is composed of non-stick aluminum castable, and the heat preservation layer (106) is composed of aluminum foil and two layers of aluminum silicate plates with different thicknesses.

3. The aluminum alloy transfer hurn has of claim 2, wherein: The hearth (101) is L-shaped as a whole.

4. The aluminum alloy transfer hurn has of claim 3, wherein: The hearth (101) is divided into a reaction zone (401), a transition zone (402) and a separation zone (403), the angle between the reaction zone (401) and the horizontal plane is 40-50°, and the angle between the separation zone (403) and the horizontal plane is 1.5-3.5°.

5. The aluminum alloy transfer hurn has of claim 1 wherein: The feeding trolley (2) comprises a lifting box (202) connected with the transport track outside, the limiting plate (203) is fixedly installed on the bottom surface of the lifting box (202), the lifting device (204) is fixedly installed in the limiting plate (203), and the bottom surface of the lifting device (204) is fixedly connected with the hook (201).

6. The aluminum alloy transfer hurn has of claim 1 wherein: The water inlet (102) and the water outlet (103) are provided with heat preservation covers (107) on the top surface, and the feeding opening (104) is provided with a furnace cover (108) on the top surface.

7. The aluminum alloy transfer hurn has of claim 6, wherein: Supporting devices are arranged between the top surface of the feeding opening (104) and the furnace cover (110).

8. The aluminum alloy transfer hurn has of claim 1 wherein: The transfer bag (3) comprises a storage bag (302) rotatably installed at the bottom of the hook (201), the storage bag (302) is cylindrical as a whole, the top surface of the storage bag (302) is provided with an arc-shaped cover plate (303), the side surface of the storage bag (302) is fixedly provided with a discharge nozzle (304), the discharge nozzle (304) is a variable-diameter circular pipe, the diameter of the port at the discharging end of the discharge nozzle (304) is smaller than the diameter of the port at the feeding end, and the thermocouple (301) is fixedly installed on the side surface of the storage bag (301) opposite to the discharge nozzle (303); The surface of the storage bag (301) is sequentially provided with a contact layer (305) and a heat insulation layer (306), and the bottom surface of the storage bag (301) is symmetrically fixedly provided with pins (307), and the connecting plates (308) are symmetrically fixedly arranged between the pins (307).

9. The aluminum alloy transfer hurn has of claim 4 or 8, wherein: The angle between the top surface of the discharge nozzle (303) and the horizontal plane is 15-20°, and the discharging angle of the transfer bag (3) is 45-55°.

10. The aluminum alloy transfer hurn having the features of claim 8 wherein: The inner bottom surface of the storage bag (301) is provided with a 45° chamfer.

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