Aluminum alloy smelting device with double furnaces

Abstract

The utility model relates to the technical field of aluminum alloy smelting, and in particular to an aluminum alloy smelting device with two melting furnaces, including a melting furnace, a refining furnace and a launder, wherein the rear wall of the melting furnace is provided with a plurality of liquid outlet holes, the rear wall of the refining furnace is provided with an aluminum liquid duct, a liquid inlet insulation chamber is provided at the rear of the refining furnace, the bottom of the liquid inlet insulation chamber is connected with the aluminum liquid duct, a plurality of liquid outlet holes are located above one end of the launder, and the other end of the launder is connected with the upper part of the liquid inlet insulation chamber; the height of the connection point between the launder and the liquid inlet insulation chamber is higher than the liquid level of the refining furnace after full load. The plurality of liquid outlet holes on the rear wall of the melting furnace greatly increase the liquid outlet speed of the molten liquid, and the aluminum liquid duct and the liquid inlet insulation chamber of the refining furnace can bear a large flow of molten liquid, thereby realizing the effect of quickly transferring the molten liquid from the melting furnace to the refining furnace, which not only has high molten liquid transfer efficiency but also reduces heat loss during molten liquid transfer.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum alloy smelting, in particular to an aluminum alloy smelting device with a double melting furnace. Background Art

[0002] When alloy smelting, it is necessary to add trace elements to the aluminum melt and perform slag removal. First, the metal raw material is melted in the furnace and slag is removed, and then the melt is transferred to the refining furnace, and additives are added to the refining furnace to adjust the trace element content in the melt. In the prior art, the aluminum melt in the furnace is directly transferred to the refining furnace through the flow channel, such as a zinc alloy material manufacturing equipment disclosed in CN207193372U, the furnace is provided with a connecting pipe 2, the connecting pipe 2 is provided with a valve, and the other end of the connecting pipe 2 is connected to the refining furnace. This connection method requires insulation of the connecting pipe, and the residual melt in the pipe has an impact on the final product, and the high temperature resistance of the valve is required to be high. For example, CN218611692U discloses a continuous aluminum liquid supply system for producing aluminum fibers based on the melt-blowing method. The smelting furnace, the insulation furnace and the refining furnace are connected in the form of a flow channel connecting the furnace eye. The smaller cross-sectional area of ​​the furnace eye can be reliably sealed, so the discharge speed of the furnace eye is limited, resulting in a slow transfer speed of the melt. Utility Model Content

[0003] The utility model aims to provide an aluminum alloy smelting device with double melting furnaces, which has the characteristics of fast molten liquid transfer speed.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] A double-furnace aluminum alloy smelting device comprises a melting furnace, a refining furnace and a launder, wherein the rear wall of the melting furnace is provided with a plurality of liquid outlet holes, the rear wall of the refining furnace is provided with an aluminum liquid duct, a liquid inlet insulation chamber is provided at the rear of the refining furnace, the bottom of the liquid inlet insulation chamber is connected to the aluminum liquid duct, the plurality of liquid outlet holes are located above one end of the launder, and the other end of the launder is connected to the upper part of the liquid inlet insulation chamber;

[0006] The height of the connection point between the flow channel and the liquid inlet insulation chamber is higher than the liquid level of the refining furnace after it is fully loaded.

[0007] In one embodiment, a plurality of the liquid outlet holes are arranged side by side in the horizontal direction;

[0008] Alternatively, the plurality of liquid outlet holes are divided into upper liquid outlet holes and lower liquid outlet holes, and the upper liquid outlet holes and the lower liquid outlet holes are arranged alternately.

[0009] In one embodiment, a transfer groove is provided between the upper liquid outlet and the lower liquid outlet, the transfer groove is located directly below the lower liquid outlet, and an outlet of the transfer groove is located directly above the flow channel.

[0010] In one embodiment, the flow trough and the transfer trough both include a bracket, a trough shell and a heat-resistant lining, the trough shell is connected to the bracket, and the heat-resistant lining is located on the inner wall of the trough shell;

[0011] The support of the adapter trough is connected to the support of the flow trough.

[0012] In one embodiment, the liquid inlet insulation chamber includes an insulation layer and a heat-resistant layer, the insulation layer is wrapped outside the heat-resistant layer, and the insulation layer and the heat-resistant layer are respectively connected to the outer wall of the refining furnace;

[0013] The liquid inlet insulation chamber is provided with a horizontal channel, the heat-resistant layer is provided with a vertical flow channel and a transverse channel, one end of the horizontal channel is connected to the upper part of the vertical flow channel, and the other end of the horizontal channel is connected to the flow trough;

[0014] The bottom end of the vertical flow channel is connected to one end of the transverse channel, and the other end of the transverse channel is connected to the aluminum liquid duct.

[0015] In one embodiment, the end of the transverse channel covers the projection of the vertical channel on the horizontal plane and is entirely located within the transverse channel;

[0016] The centerline of the horizontal channel deviates from the centerline of the vertical flow channel.

[0017] In one embodiment, the insulation layer is covered with a metal shell, and the insulation layer is divided into an insulation cotton layer and an insulation brick layer, and the insulation cotton layer is located between the insulation brick layer and the metal shell.

[0018] In one embodiment, the rear wall of the refining furnace is further provided with an aluminum alloy melt outlet, and the aluminum alloy melt outlet is located on a side of the liquid inlet insulation chamber away from the flow channel.

[0019] The technical solution provided by the utility model may have the following beneficial effects:

[0020] The several liquid outlet holes on the rear wall of the melting furnace greatly increase the liquid outlet speed of the molten metal. The aluminum liquid duct and the liquid inlet insulation chamber of the refining furnace can receive a large flow of molten metal, thereby achieving the effect of quickly transferring the molten metal from the melting furnace to the refining furnace. Not only is the molten metal transfer efficiency high, but the heat loss during the molten metal transfer is also reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of an aluminum alloy smelting device with two melting furnaces according to an embodiment of the utility model;

[0022] Figure 2 It is a rear side view of a double-furnace aluminum alloy melting device;

[0023] Figure 3 It is a schematic diagram of the back side of the furnace;

[0024] Figure 4 It is a cross-sectional view of the refining furnace in the horizontal direction;

[0025] Figure 5 is a cross-sectional view of a refining furnace in the vertical direction;

[0026] Among them, the melting furnace 1, the upper liquid outlet 11, the lower liquid outlet 12, the refining furnace 2, the aluminum liquid duct 21, the aluminum alloy molten outlet 22, the flow trough 3, the transfer trough 4, the bracket 301, the trough body shell 302, the liquid inlet insulation chamber 5, the insulation layer 51, the insulation cotton layer 511, the insulation brick layer 512, the heat-resistant layer 52, the horizontal channel 53, the vertical flow channel 54, the transverse channel 55, and the metal shell 56. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of the features, and are used to distinguish and describe features, without distinction of order or importance.

[0029] In the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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.

[0031] Combine the following Figures 1 to 5 , describing a double-furnace aluminum alloy smelting device according to an embodiment of the utility model.

[0032] A double-furnace aluminum alloy smelting device comprises a melting furnace 1, a refining furnace 2 and a launder 3, wherein a plurality of liquid outlet holes are provided on the rear wall of the melting furnace 1, a liquid aluminum duct 21 is provided on the rear wall of the refining furnace 2, a liquid inlet insulation chamber 5 is provided at the rear of the refining furnace 2, the bottom of the liquid inlet insulation chamber 5 is connected to the liquid aluminum duct 21, a plurality of liquid outlet holes are located above one end of the launder 3, and the other end of the launder 3 is connected to the upper part of the liquid inlet insulation chamber 5;

[0033] The height of the connection point between the flow channel 3 and the liquid inlet insulation chamber 5 is higher than the liquid level when the refining furnace 2 is fully loaded.

[0034] In the utility model, a plurality of liquid outlet holes on the rear wall of the melting furnace 1 greatly increase the liquid outlet speed of the molten metal, and the aluminum liquid duct 21 and the liquid inlet insulation chamber 5 of the refining furnace 2 can receive a large flow of molten metal, thereby achieving the effect of quickly transferring the molten metal from the melting furnace 1 to the refining furnace 2, which not only has a high molten metal transfer efficiency but also reduces the heat loss during the molten metal transfer.

[0035] It can be understood that the height of the connection point between the flow channel 3 and the liquid inlet insulation chamber 5 is higher than the liquid level when the refining furnace 2 is fully loaded. Therefore, when the refining furnace 2 is fully loaded, the molten liquid will not overflow from the liquid inlet insulation chamber 5, and there is no need to completely seal the liquid inlet insulation chamber 5, which reduces the difficulty of sealing the liquid inlet insulation chamber 5. It is sufficient to set a baffle at the liquid inlet of the liquid inlet insulation chamber 5.

[0036] In one embodiment of the utility model, a plurality of liquid outlets are arranged side by side in the horizontal direction to facilitate the corresponding position of the flow channel 3; or, the plurality of liquid outlets are divided into upper liquid outlets 11 and lower liquid outlets 12, and the upper liquid outlets 11 and the lower liquid outlets 12 are arranged alternately, and liquid can be discharged from the upper and lower parts at the same time, and the number of liquid outlets can reach more than three. Exemplarily, two lower liquid outlets 12 are located side by side at the bottom of the melting furnace 1, and two upper liquid outlets 11 are located side by side obliquely above the upper liquid outlets 11.

[0037] When the melting furnace 1 has an upper liquid outlet 11 and a lower liquid outlet 12, preferably, a transfer groove 4 is provided between the upper liquid outlet 11 and the lower liquid outlet 12, the transfer groove 4 is located directly below the lower liquid outlet 12, and the outlet of the transfer groove 4 is located directly above the flow channel 3. The transfer groove 4 receives and buffers the molten liquid discharged from the upper liquid outlet 11, prevents the molten liquid discharged from the upper liquid outlet 11 from splashing when falling into the flow channel 3, and improves production safety.

[0038] In one embodiment of the utility model, the flow trough 3 and the transfer trough 4 both include a bracket 301, a trough shell 302 and a heat-resistant lining, the trough shell 302 is connected to the bracket 301, and the heat-resistant lining is located on the inner wall of the trough shell 302; the bracket 301 of the transfer trough 4 is connected to the bracket 301 of the flow trough 3. The melting furnace 1 and the refining furnace 2 have a large height and are often arranged on a boss. The bottom ends of the melting furnace 1 and the refining furnace 2 are at a certain distance from the ground. By arranging the trough shell 302 on the bracket 301, the trough structure of the flow trough 3 and the transfer trough 4 is simplified and easy to install. Exemplarily, the heat-resistant lining is a heat-resistant brick or a heat-resistant castable.

[0039] In one embodiment of the present invention, the liquid inlet insulation chamber 5 includes an insulation layer 51 and a heat-resistant layer 52, the insulation layer 51 is wrapped outside the heat-resistant layer 52, and the insulation layer 51 and the heat-resistant layer 52 are respectively connected to the outer wall of the refining furnace 2;

[0040] The liquid inlet insulation chamber 5 is provided with a horizontal channel 53, and the heat-resistant layer 52 is provided with a vertical flow channel 54 and a horizontal channel 55. One end of the horizontal channel 53 is connected to the upper part of the vertical flow channel 54, and the other end of the horizontal channel 53 is connected to the flow channel 3;

[0041] The bottom end of the vertical flow channel 54 is connected to one end of the transverse channel 55 , and the other end of the transverse channel 55 is connected to the aluminum liquid duct 21 .

[0042] The liquid inlet insulation chamber 5 composed of the insulation layer 51 and the heat-resistant layer 52 has a good insulation effect on the melt; the insulation layer 51 and the heat-resistant layer 52 are respectively connected to the outer wall of the refining furnace 2, so that the liquid inlet insulation chamber 5 and the refining furnace 2 are an integrated structure, which not only simplifies the connection structure between the liquid inlet insulation chamber 5 and the refining furnace 2, but also seals the notch of the horizontal channel 53 to achieve the sealing of the liquid inlet insulation chamber 5. The horizontal channel 53, the vertical flow channel 54 and the transverse channel 55 are set to achieve the communication between the liquid inlet insulation chamber 5 and the flow channel and the refining furnace 2, and the melt in the flow channel 3 can smoothly enter the refining furnace 2, which is safe.

[0043] Preferably, the end of the transverse channel covers the projection of the vertical flow channel 54 on the horizontal plane, and is entirely located in the transverse channel 55. Then, the width of the transverse channel 55 is greater than the width of the vertical flow channel 54, so that the cross-sectional area of ​​the transverse channel 55 is greater than the cross-sectional area of ​​the vertical flow channel 54, and the molten liquid in the vertical flow channel 54 can quickly enter the transverse channel 55. At the same time, the size of the transverse channel 55 is the same as that of the aluminum liquid duct 21, so as to prevent the molten liquid from accumulating in the vertical flow channel 54. Moreover, the center line of the horizontal channel deviates from the center line of the vertical flow channel 54, so that the molten liquid flows smoothly and prevents turbulence.

[0044] In one embodiment of the present invention, the insulation layer 51 is covered with a metal shell 56, and the insulation layer 51 is divided into an insulation cotton layer 511 and an insulation brick layer 512, and the insulation cotton layer 511 is located between the insulation brick layer 512 and the metal shell 56. The metal shell 56 protects the insulation layer 51, and preferably, the metal shell 56 is connected to the metal outer wall of the refining furnace 2.

[0045] In one embodiment of the utility model, the rear wall of the refining furnace 2 is also provided with an aluminum alloy molten liquid outlet 22, which is located on the side of the liquid inlet insulation chamber 5 away from the flow channel 3, so that the layout of the molten liquid flow channel on the rear side of the refining furnace 2 is reasonable.

[0046] Other structures and operations of the double-furnace aluminum alloy smelting device according to the embodiment of the utility model are known to ordinary technicians in the field and will not be described in detail here.

[0047] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0048] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A double-furnace aluminum alloy smelting device, characterized in that: It comprises a melting furnace, a refining furnace and a launder, wherein the rear wall of the melting furnace is provided with a plurality of liquid outlet holes, the rear wall of the refining furnace is provided with an aluminum liquid duct, a liquid inlet insulation chamber is provided at the rear of the refining furnace, the bottom of the liquid inlet insulation chamber is connected with the aluminum liquid duct, the plurality of liquid outlet holes are located above one end of the launder, and the other end of the launder is connected with the upper part of the liquid inlet insulation chamber; The height of the connection point between the flow channel and the liquid inlet insulation chamber is higher than the liquid level of the refining furnace after it is fully loaded.

2. The double-furnace aluminum alloy smelting device according to claim 1, characterized in that: A plurality of the liquid outlet holes are arranged side by side in the horizontal direction; Alternatively, the plurality of liquid outlet holes are divided into upper liquid outlet holes and lower liquid outlet holes, and the upper liquid outlet holes and the lower liquid outlet holes are arranged alternately.

3. The double-furnace aluminum alloy smelting device according to claim 2, characterized in that: A transfer groove is provided between the upper liquid outlet and the lower liquid outlet. The transfer groove is located directly below the lower liquid outlet, and an outlet of the transfer groove is located directly above the flow channel.

4. The double-furnace aluminum alloy smelting device according to claim 3, characterized in that: The flow trough and the transfer trough both include a bracket, a trough shell and a heat-resistant lining, the trough shell is connected to the bracket, and the heat-resistant lining is located on the inner wall of the trough shell; The support of the adapter trough is connected to the support of the flow trough.

5. The double-furnace aluminum alloy smelting device according to claim 1, characterized in that: The liquid inlet insulation chamber comprises an insulation layer and a heat-resistant layer, the insulation layer is wrapped outside the heat-resistant layer, and the insulation layer and the heat-resistant layer are respectively connected to the outer wall of the refining furnace; The liquid inlet insulation chamber is provided with a horizontal channel, the heat-resistant layer is provided with a vertical flow channel and a transverse channel, one end of the horizontal channel is connected to the upper part of the vertical flow channel, and the other end of the horizontal channel is connected to the flow trough; The bottom end of the vertical flow channel is connected to one end of the transverse channel, and the other end of the transverse channel is connected to the aluminum liquid duct.

6. The double-furnace aluminum alloy smelting device according to claim 5, characterized in that: The end of the transverse channel covers the projection of the vertical flow channel on the horizontal plane and is entirely located in the transverse channel; The centerline of the horizontal channel deviates from the centerline of the vertical flow channel.

7. The double-furnace aluminum alloy smelting device according to claim 5, characterized in that: The heat-insulating layer is covered with a metal shell, and the heat-insulating layer is divided into a heat-insulating cotton layer and a heat-insulating brick layer, and the heat-insulating cotton layer is located between the heat-insulating brick layer and the metal shell.

8. The double-furnace aluminum alloy smelting device according to claim 6, characterized in that: The rear wall of the refining furnace is also provided with an aluminum alloy molten liquid outlet, and the aluminum alloy molten liquid outlet is located at a side of the liquid inlet insulation chamber away from the flow channel.

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