Preheating recovery device for aluminum scrap feeding chamber

Abstract

The utility model relates to the field of aluminum product production and processing, in particular to a preheating and recycling device for an aluminum scrap feeding chamber. The utility model provides an aluminum skimming feeding chamber preheating recovery device which comprises a heating furnace and a smelting furnace, the heating furnace and the smelting furnace are communicated through a conveying channel, after aluminum materials are heated and melted into high-temperature aluminum liquid through the heating furnace, the high-temperature aluminum liquid is conveyed into the smelting furnace through the conveying channel to be smelted, and an aluminum skimming feeding chamber is arranged. The aluminum skimmings can be put into the high-temperature molten aluminum to be heated and melted so as to be recycled; comprising a gas recovery device which is used for recovering high-temperature flammable gas generated during melting of aluminum skimmings and conveying the high-temperature flammable gas into a smelting furnace, preheating the smelting furnace and enabling the high-temperature flammable gas to be combusted during smelting of the smelting furnace. According to the preheating and recycling device for the aluminum skimming feeding chamber, a filtering and purifying device does not need to be additionally arranged, and the environment is not prone to being polluted by generated high-temperature flammable gas.

Description

Technical Field

[0001] The utility model relates to the field of aluminum product production and processing, in particular to a preheating recovery device for an aluminum chip delivery chamber. Background Art

[0002] Existing aluminum product production lines typically consist of a heating furnace and a smelting furnace. The heating furnace heats and melts aluminum lump into hot molten aluminum (containing impurities), which is then conveyed to a conveyor channel. This hot molten aluminum is then transported to the smelting furnace for smelting (the smelting furnace heats the molten aluminum by burning fuel to achieve high temperatures). Impurities are removed, resulting in a relatively pure aluminum liquid for use in subsequent production processes. This subsequent production process generates a large amount of aluminum chips, which are collected and fed into the heating furnace to melt the molten aluminum for recycling. Because some aluminum chips adhere to impurities such as organic oil, the melting process generates high-temperature, flammable gases. These gases, containing impurities such as engine oil, are directly released into the air, polluting the environment. Therefore, the existing production line needs to be equipped with filtration and purification equipment, which is costly. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a preheating recovery device for an aluminum chip delivery chamber, which does not require the installation of a filtering and purification device and is not likely to cause the generated high-temperature flammable gas to pollute the environment.

[0004] In order to solve the above problems, the utility model provides an aluminum chip delivery chamber preheating recovery device, which includes a heating furnace and a smelting furnace. The heating furnace and the smelting furnace are connected by a conveying channel. After the heating furnace heats the aluminum material and melts it into high-temperature aluminum liquid, the high-temperature aluminum liquid is transported to the smelting furnace for smelting through the conveying channel. An aluminum chip delivery chamber is provided, which can deliver aluminum chips into the high-temperature aluminum liquid for heating and melting to achieve recovery; and includes a gas recovery device, which recovers the high-temperature flammable gas generated when the aluminum chips are melted and transports it to the smelting furnace, preheats the smelting furnace and provides the smelting furnace with combustion during smelting.

[0005] Furthermore, the aluminum chip delivery chamber is vertically arranged above the conveying channel, and a feed port for receiving the aluminum chips to be recycled is provided in the middle of the aluminum chip delivery chamber, and a discharge port connected to the conveying channel is provided in the lower part.

[0006] Furthermore, a conveying device is provided to convey the aluminum chips to the feeding port of the aluminum chip delivery chamber.

[0007] Furthermore, the gas recovery device includes a gas collecting pipe, which connects the conveying channel and the smelting furnace together and can convey the high-temperature flammable gas in the conveying channel to the smelting furnace.

[0008] Furthermore, the air collecting pipe is equipped with an air pump or an exhaust fan.

[0009] Furthermore, the gas collecting pipe is specifically connected to the interior of the smelting furnace at one end, and connected to the upper part of the aluminum chip feeding chamber at the other end, and connected to the conveying channel through the discharge port at the lower part of the aluminum chip feeding chamber.

[0010] Beneficial Effects: Aluminum chips to be recycled are placed into high-temperature molten aluminum from the chip delivery chamber, where they are heated and melted. The resulting high-temperature flammable gas is transported to the smelting furnace via a gas recovery device. This not only preheats the furnace, allowing it to quickly heat up for subsequent smelting, but also provides fuel for combustion during smelting, reducing the furnace's own fuel consumption and lowering costs. Furthermore, after the high-temperature flammable gas is burned in the smelting furnace, it contains fewer impurities, such as engine oil. Even if it is directly discharged into the air, it is unlikely to cause environmental pollution, eliminating the need for additional filtering and purification devices as in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the preheating and recovery device of the aluminum chip delivery chamber.

[0012] Explanation of symbols:

[0013] 1-Heating furnace; 2-Smelting furnace; 3-Conveying channel; 4-High-temperature aluminum liquid; 5-Aluminum chip delivery chamber; 51-Feed port; 52-Discharge port; 6-Conveyor belt; 7-Aluminum chips; 8-Gas collecting pipe. DETAILED DESCRIPTION

[0014] The present invention is further described in detail below in conjunction with specific embodiments.

[0015] Aluminum chip delivery room preheating recovery device see Figure 1 , comprising a heating furnace 1 on the left and a smelting furnace 2 on the right, connected by a conveying channel 3. The heating furnace 1 heats and melts aluminum lump into high-temperature molten aluminum 4 (containing impurities), which is then delivered to the conveying channel 3. This high-temperature molten aluminum 4 is transported via the conveying channel 3 to the smelting furnace 2 for smelting, where impurities are removed, resulting in relatively pure aluminum liquid for use in subsequent production processes. In actual production, the heating furnace 1 continuously heats and melts multiple batches of aluminum lump into high-temperature molten aluminum 4, which are then delivered to the conveying channel 3, allowing the high-temperature molten aluminum 4 to continuously flow along the conveying channel 3 to the smelting furnace 2 for smelting. The heating furnace 1, smelting furnace 2, and conveying channel 3 are prior art, and their specific structures and operating principles are not described in detail here.

[0016] Above the conveying channel 3 lies a vertical aluminum chip delivery chamber 5. This hollow chamber features a feed port 51 in the center for aluminum chips 7 and a discharge port 52 at the bottom, connected to the conveying channel 3. A conveyor belt 6, acting as a transport mechanism, collects aluminum chips 7 generated during subsequent production processes and delivers them to the feed port 51 of the aluminum chip delivery chamber 5. From the feed port 51, the aluminum chips 7 enter the chamber 5 and from the discharge port 52 into the conveying channel 3. There, they are then delivered to the high-temperature molten aluminum 4 being transported along the conveying channel 3 to the smelting furnace 2. The residual heat of the high-temperature molten aluminum 4 melts the chips into molten aluminum. The melted aluminum chips 7 are then transported along with the high-temperature molten aluminum 4 to the smelting furnace 2 for smelting. Since the aluminum chips 7 are fed into the high-temperature aluminum liquid 4 in the conveying channel 3 through the aluminum chip feeding chamber 5, the high-temperature aluminum liquid 4 melts the aluminum chips 7 by its own residual heat, and the aluminum chips 7 are not easily burned (the existing method of feeding the aluminum chips 7 into the heating furnace 1 for heating causes more serious burning), and the recycling rate of the aluminum chips 7 is high.

[0017] Since some impurities such as organic oil adhere to the surface of the aluminum chips 7, high-temperature flammable gases will be generated accordingly during the process of being heated and melted by the high-temperature aluminum liquid 4. These gases contain impurities such as engine oil, which will pollute the environment if directly discharged into the air. For this reason, a gas collecting pipe 8 is connected between the aluminum chip delivery chamber 5 and the smelting furnace 2. The left end of the gas collecting pipe 8 is connected to the upper part of the aluminum chip delivery chamber 5 and the right end is connected to the inside of the smelting furnace 2. The smelting furnace 2 is connected to the aluminum chip delivery chamber 5 by means of the gas collecting pipe 8, and is connected to the conveying channel 3 through the discharge port 52 of the aluminum chip delivery chamber 5. The gas collecting pipe 8 is equipped with an air pump (not shown in the figure) or an exhaust fan (not shown in the figure). When it is necessary to deal with the high-temperature flammable gases generated by the aluminum chips 7 in the conveying channel 3, the production personnel start the air pump or the exhaust fan to form a negative pressure inside the smelting furnace 2, so that the high-temperature flammable gases in the conveying channel 3 enter the aluminum chip delivery chamber 5 through the discharge port 52 of the aluminum chip delivery chamber 5 and enter the inside of the smelting furnace 2 through the gas collecting pipe 8 on the upper part of the aluminum chip delivery chamber 5 (as shown in the figure). Figure 1 In this way, the high-temperature flammable gas not only preheats (or maintains) smelting furnace 2, allowing it to rapidly heat up during subsequent smelting, but also fuels the smelting furnace 2 during smelting, reducing its own fuel consumption and lowering costs. Furthermore, after the high-temperature flammable gas is burned in smelting furnace 2, it contains less impurities such as engine oil, making it less likely to cause environmental pollution even if discharged directly into the air. In other embodiments, the gas manifold 8 may not be connected to the upper portion of the aluminum chip delivery chamber 5, but may instead be directly connected to the conveying channel 3.

[0018] The above is only an embodiment of the present invention and does not limit the scope of patent protection. Those skilled in the art can make non-substantial changes or substitutions based on the present invention and still fall within the scope of patent protection.

Claims

1. A preheating and recovery device for the aluminum chip delivery chamber includes a heating furnace and a smelting furnace. The heating furnace and the smelting furnace are connected by a conveying channel. After the heating furnace heats and melts the aluminum material into high-temperature aluminum liquid, the high-temperature aluminum liquid is transported to the smelting furnace for smelting through the conveying channel. The device is characterized by: An aluminum chip delivery chamber is provided, which can deliver aluminum chips into the high-temperature aluminum liquid for heating and melting to achieve recovery; it includes a gas recovery device, which recovers the high-temperature flammable gas generated when the aluminum chips are melted and transports it to the smelting furnace to preheat the smelting furnace and provide combustion for the smelting furnace during smelting.

2. The aluminum chip delivery chamber preheating recovery device according to claim 1, characterized in that: The aluminum chip delivery chamber is vertically arranged above the conveying channel. A feed port for receiving the aluminum chips to be recycled is provided in the middle of the aluminum chip delivery chamber, and a discharge port connected to the conveying channel is provided in the lower part.

3. The aluminum chip delivery chamber preheating recovery device according to claim 2, characterized in that: A conveying device is provided to convey the aluminum chips to the feeding port of the aluminum chip delivery chamber.

4. The aluminum chip delivery chamber preheating recovery device according to claim 2, characterized in that: The gas recovery device includes a gas collecting pipe, which connects the conveying channel and the smelting furnace together and can convey the high-temperature flammable gas in the conveying channel to the smelting furnace.

5. The aluminum chip delivery chamber preheating recovery device according to claim 4, characterized in that: The air collecting pipe is equipped with an air pump or an exhaust fan.

6. The aluminum chip delivery chamber preheating recovery device according to claim 4, characterized in that: Specifically, one end of the gas collecting pipe is connected to the interior of the smelting furnace, the other end is connected to the upper part of the aluminum chip feeding chamber, and is connected to the conveying channel through the discharge port at the lower part of the aluminum chip feeding chamber.

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