Aluminum ingot casting preheating tunnel structure

Abstract

The utility model discloses an aluminum ingot casting preheating tunnel structure which comprises a tunnel box and a chain conveyor, the chain conveyor penetrates through the tunnel box, a groove is formed in the tunnel box, heat conduction materials are filled in the groove, and part of a chain of the chain conveyor passes through the groove and is lower than the upper surface of the heat conduction materials. A chain of the chain conveyor is provided with a blocking piece used for aluminum ingots. According to the preheating tunnel structure, the aluminum ingot is heated through the solid-phase heat conduction material, the heating efficiency of the heat conversion mode is high, the solid-phase heat conduction material has the heat storage function, and heat loss is reduced; in addition, when the chain conveyor drives the aluminum ingot to walk, the solid-phase heat conduction material can also form friction with the aluminum ingot, an oxide layer on the surface of the aluminum ingot is ground off, and the situation that the melting speed is affected due to the fact that the produced oxide layer is too thick is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum processing equipment, in particular to an aluminum ingot melting and casting preheating tunnel structure. Background Art

[0002] Aluminum ingot is a commonly used raw material in the aluminum processing industry. According to national standards, it should be called "aluminum ingot for remelting", but everyone is used to calling it "aluminum ingot". It is produced by electrolysis of alumina-cryolite. After aluminum ingots enter industrial applications, there are two major categories: cast aluminum alloy and deformed aluminum alloy. Cast aluminum and aluminum alloys are aluminum castings produced by casting methods; deformed aluminum and aluminum alloys are aluminum processed products produced by pressure processing methods: plates, strips, foils, tubes, bars, profiles, wires and forgings.

[0003] Generally, before aluminum ingots are put into the furnace for remelting, in order to save the energy consumption of the furnace and increase the melting speed, the aluminum ingots will be preheated to significantly increase the temperature of the aluminum ingots, reduce the time required for melting and reduce the energy consumption of the furnace. A common preheating method is to lengthen the furnace feeding path at the furnace feeding port to temporarily store the aluminum ingots and heat the aluminum ingots with the heat emitted by the furnace. This gas phase heat conversion efficiency is extremely low, energy loss is fast and preheating is slow, and a thicker oxide film is generated. Utility Model Content

[0004] The utility model aims to provide an aluminum ingot melting and casting preheating tunnel structure to solve the problems of extremely low gas phase heat conversion efficiency, rapid energy loss and slow preheating, as well as thick oxide film formation in traditional aluminum ingot preheating.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A preheating tunnel structure for melting and casting aluminum ingots comprises a tunnel box and a chain conveyor, wherein the chain conveyor runs through the tunnel box, a groove is arranged in the tunnel box, the groove is filled with a heat-conducting material, part of the chain of the chain conveyor passes through the groove and is lower than the upper surface of the heat-conducting material, and a baffle for the aluminum ingot is arranged on the chain of the chain conveyor.

[0007] A further technical solution is: the heat conducting material is metal sand.

[0008] A further technical solution is that a heating element is arranged on the periphery of the groove.

[0009] A further technical solution is: the heating element is a heat conducting tube or an electric heating tube.

[0010] A further technical solution is that guide plates for the chain are arranged on both sides of the groove.

[0011] A further technical solution is that a smoke exhaust pipe communicating with the interior of the tunnel box is arranged on the top of the tunnel box.

[0012] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0013] The utility model proposes an aluminum ingot melting and casting preheating tunnel structure, which utilizes solid-phase heat-conducting materials to heat the aluminum ingots. This heat conversion method has high heating efficiency, and the solid-phase heat-conducting materials also have a heat storage function to reduce heat loss. In addition, when the chain conveyor carries the aluminum ingots, the solid-phase heat-conducting materials can also form friction with the aluminum ingots to grind off the oxide layer on the surface of the aluminum ingots, thereby preventing the production of an excessively thick oxide layer that affects the melting speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a structural schematic diagram of an aluminum ingot melting and casting preheating tunnel structure.

[0015] Figure numerals: 1. tunnel box; 2. chain conveyor; 3. heat conductive material; 4. aluminum ingot; 5. baffle; 6. heating element; 7. guide plate; 8. smoke exhaust pipe. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0018] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0019] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0020] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Embodiment 1:

[0023] In this embodiment, Figure 1 As shown, an aluminum ingot melting and preheating tunnel structure includes a tunnel box 1 and a chain conveyor 2. The chain conveyor 2 runs through the tunnel box 1. A groove is provided in the tunnel box 1. The groove is filled with a heat-conducting material 3. Part of the chain of the chain conveyor 2 passes through the groove and is lower than the upper surface of the heat-conducting material 3. A baffle 5 for the aluminum ingot 4 is provided on the chain of the chain conveyor 2.

[0024] The aluminum ingot enters the groove of the tunnel box 1 through the chain conveyor 2, and is quickly heated by the heat conductive material 3 in the groove, thereby improving the heating efficiency and the heating speed. The heat conductive material 3 also has a heat storage function, reduces the heat loss, and saves energy consumption.

[0025] Preferably, the heat conducting material 3 is metal sand.

[0026] The best metal sand is copper sand (grains). First, it has a faster heat conduction speed to increase the heating rate of the aluminum ingot, and second, it can grind the oxide layer of the aluminum ingot.

[0027] Preferably, a heating element 6 is provided at the periphery of the groove.

[0028] The heat conducting material 3 in the groove is heated and kept warm by the heating element 6 .

[0029] Preferably, the heating element 6 is a heat conducting tube or an electric heating tube.

[0030] The heating element 6 is a heat pipe, which can be connected to an external heating device, such as a hot water boiler, a steam boiler or a thermal oil boiler, to heat and keep the heat-conducting material 3 in the groove through the heat pipe.

[0031] The heating element 6 is an electric heating tube, which is directly electrically connected to an external electric control device to heat and keep the heat-conducting material 3 in the groove warm.

[0032] Preferably, guide plates 7 for the chain are provided on both sides of the groove.

[0033] The guide plate 7 is used to guide the chain of the chain conveyor 2 to form an uphill slope and a downhill slope in the groove.

[0034] Preferably, a smoke exhaust pipe 8 communicating with the interior of the tunnel box 1 is disposed on the top thereof.

[0035] The smoke exhaust pipe 8 is connected to the external negative pressure environmental protection equipment for removing smoke and dust.

[0036] The working process of the utility model is as follows: the aluminum ingot is placed on the chain conveyor 2 through equipment such as a crane. As the chain conveyor 2 enters the tunnel box 1, the chain conveyor 2 forms a downward slope through the guide plate 7. The baffle 5 on the chain of the chain conveyor 2 is used to prevent the aluminum ingot from sliding when going up and down the slope. The aluminum ingot is brought into the heat-conducting material 3 in the groove, and the aluminum ingot is heated by the solid-phase heat-conducting material. This heat conversion method has high heating efficiency, and the solid-phase heat-conducting material also has a heat storage function to reduce heat loss. In addition, when the chain conveyor is carrying the aluminum ingot, the solid-phase heat-conducting material can also form friction with the aluminum ingot to grind off the oxide layer on the surface of the aluminum ingot to prevent the production of an excessively thick oxide layer that affects the melting rate.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An aluminum ingot melting and preheating tunnel structure, comprising a tunnel box (1) and a chain conveyor (2), wherein the chain conveyor (2) passes through the tunnel box (1), and is characterized in that: A groove is provided in the tunnel box (1), the groove is filled with a heat conductive material (3), a portion of the chain of the chain conveyor (2) passes through the groove and is below the upper surface of the heat conductive material (3), and a baffle (5) for an aluminum ingot (4) is provided on the chain of the chain conveyor (2).

2. The aluminum ingot melting and casting preheating tunnel structure according to claim 1 is characterized in that: The heat conducting material (3) is metal sand.

3. The aluminum ingot melting and casting preheating tunnel structure according to claim 1 is characterized in that: A heating element (6) is arranged on the outer periphery of the groove.

4. The aluminum ingot melting and casting preheating tunnel structure according to claim 3 is characterized in that: The heating element (6) is a heat conducting tube or an electric heating tube.

5. The aluminum ingot melting and casting preheating tunnel structure according to claim 1 is characterized in that: Guide plates (7) for the chain are arranged on both sides of the groove.

6. The aluminum ingot melting and casting preheating tunnel structure according to claim 1 is characterized in that: The top of the tunnel box (1) is provided with a smoke exhaust pipe (8) which is in communication with the interior thereof.

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