Lower kettle body system of permanent magnet stirring differential pressure furnace

Abstract

The utility model relates to the technical field of smelting equipment, and provides a lower kettle body system of a permanent magnet stirring differential pressure furnace, which comprises a lower kettle body, a resistance furnace body and a crucible device, the resistance furnace body is coaxially arranged in the inner cavity of the lower kettle body, and the crucible device is coaxially arranged in the inner cavity of the resistance furnace body, the crucible device comprises a smelting crucible, a first heat insulation part, a crucible protection shell, a second heat insulation part and a cover body, the crucible protection shell is coaxially arranged on the outer side of the smelting crucible, the first heat insulation part is arranged in a gap between the crucible protection shell and the smelting crucible, and the cover body is coaxially arranged on the upper portion of the smelting crucible; and the second heat insulation part is arranged between the cover body and the smelting crucible. According to the utility model, the operation safety of the lower kettle body can be improved, and the smelting and stirring quality and efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of smelting equipment, in particular to a permanent magnetic stirring differential pressure furnace lower kettle system. Background Art

[0002] Aluminum alloy differential pressure pouring is an important smelting and pouring process. During the aluminum alloy differential pressure pouring, stirring and degassing can only be performed before pouring. During the pouring process, chemical components of different densities in the aluminum alloy melt will settle, and the upper and lower layers of the aluminum alloy melt will have a temperature difference, resulting in uneven composition of the cast aluminum alloy castings. Usually, an electromagnetic stirring device is set at the bottom of the molten pool to stir the aluminum alloy melt non-contactly, improve the composition uniformity of the aluminum alloy melt, reduce melt burn loss, and reduce energy consumption.

[0003] In practical applications, when electromagnetic stirring is used for differential pressure pouring of aluminum alloy, the stirring depth is relatively small, and there are very strict requirements on the distance from the control cabinet and the setting distance of the bottom of the electromagnetic stirring. It is also required that the material of the kettle under the differential pressure furnace in the magnetic field rotation area cannot be magnetic.

[0004] Therefore, how to provide a permanent magnetic stirring differential pressure furnace lower kettle system, increase the stirring depth, and optimize the lower kettle structure has become an important technical issue. Utility Model Content

[0005] In view of this, in order to overcome the deficiencies of the prior art, the utility model aims to provide a permanent magnetic stirring differential pressure furnace lower kettle system.

[0006] The utility model provides a permanent magnetic stirring differential pressure furnace lower kettle system, which comprises a lower kettle, a resistance furnace body and a crucible device, wherein the resistance furnace body is coaxially arranged in the inner cavity of the lower kettle body, and the crucible device is coaxially arranged in the inner cavity of the resistance furnace body, wherein the crucible device comprises a smelting crucible, a first heat insulating component, a crucible protection shell, a second heat insulating component and a cover body, the crucible protection shell is coaxially arranged on the outer side of the smelting crucible, the first heat insulating component is arranged in the gap between the crucible protection shell and the smelting crucible, the cover body is coaxially arranged on the upper part of the smelting crucible, and the second heat insulating component is arranged between the cover body and the smelting crucible.

[0007] Preferably, in the permanent magnetic stirring differential pressure furnace lower kettle system of the utility model, the melting crucible is U-shaped as a whole, the crucible protection shell is a cylindrical tube with an open upper end as a whole, the outer diameter of the melting crucible is smaller than the inner diameter of the crucible protection shell, and the bottom of the melting crucible is higher than the bottom of the crucible protection shell.

[0008] Preferably, in the lower kettle system of the permanent magnetic stirring differential pressure furnace of the present invention, the upper end of the first heat insulating component is higher than the upper end of the crucible protection shell.

[0009] Preferably, in the permanent magnetic stirring differential pressure furnace lower kettle system of the present invention, the second thermal insulation component is annular, the inner diameter of the second thermal insulation component is smaller than the inner diameter of the melting crucible, and the outer diameter of the second thermal insulation component is larger than the outer diameter of the melting crucible.

[0010] Preferably, in the permanent magnetic stirring differential pressure furnace lower kettle system of the present invention, the cover body is annular as a whole, the upper end of the cover body matches the top of the resistance furnace body, and the lower end of the cover body matches the second thermal insulation component.

[0011] Preferably, in the lower kettle body system of the permanent magnetic stirring differential pressure furnace of the utility model, the lower kettle body includes a lower kettle body body, a lower kettle body flange arranged on the upper part of the lower kettle body body and integrally connected to the lower kettle body body, and a lower kettle body middle partition fixedly assembled on the lower kettle body flange. The lower kettle body body as a whole is in the shape of a cylinder with an open upper end, and a wire threading channel connected to the inner side of the lower kettle body body is arranged on the side wall of the lower kettle body body.

[0012] Preferably, in the lower kettle system of the permanent magnetic stirring differential pressure furnace of the present invention, a plurality of exhaust passages are arranged on the flange of the lower kettle, and a plurality of exhaust pipes arranged on the outer side of the lower kettle body are connected to the exhaust passages in a one-to-one correspondence.

[0013] Preferably, in the permanent magnet stirring differential pressure furnace lower kettle system of the utility model, the resistance furnace body includes a furnace body, an electric heating element and a third thermal insulation component. The furnace body as a whole is in the shape of a cylinder with an open upper end. The electric heating element is coaxially arranged in a ring shape on the inner wall of the furnace body, and the third thermal insulation component is arranged at the bottom of the inner cavity of the furnace body.

[0014] Preferably, the permanent magnetic stirring differential pressure furnace lower kettle system of the utility model comprises a resistance furnace controller, and the resistance furnace controller is electrically connected to the electric heating element inside the resistance furnace.

[0015] Preferably, the permanent magnetic stirring differential pressure furnace lower kettle system of the present invention comprises a permanent magnetic stirrer and a permanent magnetic stirring controller. The permanent magnetic stirrer is arranged directly below the bottom of the lower kettle, and the permanent magnetic stirring controller is electrically connected to the permanent magnetic stirrer.

[0016] Preferably, the permanent magnetic stirring differential pressure furnace lower kettle system of the utility model can improve the operation safety of the lower kettle and improve the quality and efficiency of smelting and stirring through comprehensive structural design. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic cross-sectional structure diagram of a permanent magnetic stirring differential pressure furnace lower kettle system according to an embodiment of the utility model;

[0019] Figure 2 This is a structural example diagram of a lower kettle flange of a permanent magnetic stirring differential pressure furnace lower kettle system according to an embodiment of the utility model;

[0020] Figure 3 This is a partial structural example diagram of a permanent magnetic stirring differential pressure furnace lower kettle system according to an embodiment of the utility model;

[0021] Figure 4 This is an application example diagram of the lower kettle system of the permanent magnetic stirring differential pressure furnace implemented according to the utility model;

[0022] Figure 5 This is a structural example diagram of a permanent magnetic stirring differential pressure furnace lower kettle system according to an embodiment of the utility model;

[0023] Figure 6 This is a structural example diagram of another permanent magnetic stirring differential pressure furnace lower kettle system according to an embodiment of the utility model;

[0024] In the figure, 1-lower kettle body, 2-resistance furnace body, 3-crucible device, 11-lower kettle body, 12-threading channel, 13-lower kettle body flange, 14-lower kettle body middle partition, 15-exhaust channel, 16-exhaust pipe, 21-furnace body, 22-electric heating element, 23-third thermal insulation component, 31-smelting crucible, 32-first thermal insulation component, 33-crucible protection shell, 34-second thermal insulation component, 35-cover body, 4-alloy melt, 5-resistance furnace body controller, 6-permanent magnetic stirrer, 7-permanent magnetic stirring controller. DETAILED DESCRIPTION

[0025] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

[0026] Figure 1 FIG. 1 is a schematic cross-sectional structure diagram of a permanent magnetic stirring differential pressure furnace lower kettle system according to an embodiment of the utility model, as shown in FIG. Figure 1 As shown, the lower kettle body system of the permanent magnetic stirring differential pressure furnace of the utility model comprises a lower kettle body 1, a resistance furnace body 2 and a crucible device 3.

[0027] As an optional example, in this embodiment, the resistance furnace body 2 is coaxially arranged in the inner cavity of the lower kettle body 1, and the crucible device 3 is coaxially arranged in the inner cavity of the resistance furnace body 2, wherein the crucible device 3 includes a melting crucible 31, a first heat insulation component 32, a crucible protection shell 33, a second heat insulation component 34 and a cover 35, the crucible protection shell 33 is coaxially arranged on the outside of the melting crucible 31, the first heat insulation component 32 is arranged in the gap between the crucible protection shell 33 and the melting crucible 31, the cover 35 is coaxially arranged on the upper part of the melting crucible 31, and the second heat insulation component 34 is arranged between the cover 35 and the melting crucible 31. It should be noted that in this embodiment, the cover 35 is annular as a whole, the upper end of the cover 35 matches the top of the resistance furnace body 2, and the lower end of the cover 35 matches the second heat insulation component 34.

[0028] As an optional example, in the permanent magnetic stirring differential pressure furnace lower kettle system of the utility model, the melting crucible 31 is generally U-shaped, the crucible protection shell 33 is generally cylindrical with an open upper end, the outer diameter of the melting crucible 31 is smaller than the inner diameter of the crucible protection shell 33, and the bottom of the melting crucible 31 is higher than the bottom of the crucible protection shell 33.

[0029] As an optional example, the upper end of the first heat insulating component 32 is higher than the upper end of the crucible protection shell 33. The second heat insulating component 34 is annular, the inner diameter of the second heat insulating component 34 is smaller than the inner diameter of the melting crucible 31, and the outer diameter of the second heat insulating component 34 is larger than the outer diameter of the melting crucible 31. In practical applications, the first heat insulating component 32 and the second heat insulating component 34 are made of heat insulating cotton.

[0030] In practical applications, the permanent magnetic stirring differential pressure furnace lower kettle system of this embodiment is provided with a crucible protection shell 33. When the smelting crucible 31 ruptures in an extreme environment, only a small part of the alloy melt 4 can leak out, and the small part of the alloy liquid that leaks out is retained in the crucible protection shell 33, and will not damage the resistance furnace body 2, thereby not affecting the overall operation.

[0031] As an optional example, in this embodiment, the lower kettle body 1 includes a lower kettle body 11, a lower kettle body flange 13 arranged on the upper part of the lower kettle body 11 and connected to the lower kettle body 11 as a whole, and a lower kettle body middle partition 14 fixedly assembled on the lower kettle body flange 13. The lower kettle body 11 is generally cylindrical with an open upper end, and a threading channel 12 connected to the inner side of the lower kettle body 11 is arranged on the side wall of the lower kettle body 11. In practical applications, the threading channel 12 is used to assemble and fix the control and power supply lines connecting the resistance furnace body 2 to the outside.

[0032] In this embodiment, the lower kettle body flange 13 can be integrally formed with the lower kettle body main body 11 , and the lower kettle body flange 13 can also be formed by being connected to the lower kettle body main body 11 through welding. Figure 2This is a structural example diagram of a lower kettle flange of a permanent magnetic stirring differential pressure furnace lower kettle system according to an embodiment of the utility model. Figure 3 FIG. 1 is a partial structural example diagram of a permanent magnetic stirring differential pressure furnace lower kettle system according to an embodiment of the utility model, as shown in FIG. Figure 2 and Figure 3 As shown, a plurality of exhaust passages 15 are arranged on the lower kettle body flange 13, and a plurality of exhaust pipes 16 arranged outside the lower kettle body 11 are connected to the exhaust passages 15 in a one-to-one correspondence. In practical applications, the lower kettle body flange 13 and the lower kettle body middle partition 14 are made of magnetic conductive materials, such as 16Mn carbon steel, to shield the excess residual magnetism on the top.

[0033] As an optional example, in this embodiment, the resistance furnace body 2 includes a furnace body 21, an electric heating element 22 and a third thermal insulation component 23. The furnace body 21 is generally cylindrical with an open upper end. The electric heating element 22 is coaxially annularly arranged on the inner wall of the furnace body 21, and the third thermal insulation component 23 is arranged at the bottom of the inner cavity of the furnace body 21.

[0034] Figure 4 This is an application example diagram of the permanent magnetic stirring differential pressure furnace lower kettle system implemented according to the utility model. Figure 4 As shown, in this embodiment, during operation, the alloy melt 4 is arranged in the melting crucible 31 .

[0035] Figure 5 This is a structural example diagram of a permanent magnetic stirring differential pressure furnace lower kettle system according to an embodiment of the utility model; Figure 6 FIG. 2 is a structural example diagram of another permanent magnetic stirring differential pressure furnace lower kettle system according to an embodiment of the utility model. Figure 5 and Figure 6 As shown, in actual application, the permanent magnetic stirring differential pressure furnace lower kettle system of this embodiment includes a resistance furnace controller 5, and the resistance furnace controller 5 is electrically connected to the electric heating element 22 inside the resistance furnace 2. The permanent magnetic stirring differential pressure furnace lower kettle system of this embodiment also includes a permanent magnetic stirrer 6 and a permanent magnetic stirring controller 7, the permanent magnetic stirrer 6 is arranged just below the bottom of the lower kettle 1, and the permanent magnetic stirring controller 7 is electrically connected to the permanent magnetic stirrer 6.

[0036] The following describes the assembly and application principle of the permanent magnetic stirring differential pressure furnace lower kettle system of this embodiment in a specific application scenario:

[0037] According to the technical requirements of the pressure vessel, the threading channel 12 and the lower kettle flange 13 are welded to the lower kettle body 11, and the weld flaw detection and kettle body water pressure detection are carried out. After passing the inspection, the lower kettle body 1 is installed on the foundation pit, leveled and fixed; the resistance furnace body 2 is installed in the lower kettle body 1, and a third heat insulation component 23, such as heat insulation cotton, is arranged at the bottom of the furnace body 21, and a crucible protection shell 33 is installed on the heat insulation cotton, and a first heat insulation component 32 is placed in the crucible protection shell 33, and a melting crucible 31 is placed in the first heat insulation component 32. A second heat insulating component 34 is placed on the upper end surface of the melting crucible 31, and the cover 35 is put on. The power is turned on. After the alloy melt 4 is added into the melting crucible 31, the permanent magnetic stirring controller 7 is operated to move the permanent magnetic stirrer 6 to the bottom of the lower kettle body 1, and the lifting and lowering gap is adjusted to ≤25m. The resistance heating of the alloy melt 4 is started by operating the resistance furnace body controller 5, and the rotation speed and forward and reverse time of the permanent magnetic stirrer 6 are adjusted to automatically stir the alloy melt 4. The partition plates 14 in the upper and lower kettle bodies are covered, and the exhaust pipe 16 is connected to carry out the stirring and melting operation.

[0038] The permanent magnetic stirring differential pressure furnace lower kettle system of this embodiment can improve the operation safety of the lower kettle and improve the quality and efficiency of smelting and stirring through comprehensive structural design and material selection.

[0039] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A permanent magnetic stirring differential pressure furnace lower kettle system, characterized in that: The lower kettle system of the permanent magnetic stirring differential pressure furnace includes a lower kettle, a resistance furnace body and a crucible device, the resistance furnace body is coaxially arranged in the inner cavity of the lower kettle body, and the crucible device is coaxially arranged in the inner cavity of the resistance furnace body, wherein the crucible device includes a smelting crucible, a first thermal insulation component, a crucible protection shell, a second thermal insulation component and a cover body, the crucible protection shell is coaxially arranged on the outside of the smelting crucible, the first thermal insulation component is arranged in the gap between the crucible protection shell and the smelting crucible, the cover body is coaxially arranged on the upper part of the smelting crucible, and the second thermal insulation component is arranged between the cover body and the smelting crucible.

2. The permanent magnetic stirring differential pressure furnace lower kettle system according to claim 1, characterized in that: The melting crucible is U-shaped as a whole, the crucible protection shell is cylindrical with an open upper end as a whole, the outer diameter of the melting crucible is smaller than the inner diameter of the crucible protection shell, and the bottom of the melting crucible is higher than the bottom of the crucible protection shell.

3. The permanent magnetic stirring differential pressure furnace lower kettle system according to claim 1, characterized in that: The upper end of the first heat insulating component is higher than the upper end of the crucible protection shell.

4. The permanent magnetic stirring differential pressure furnace lower kettle system according to claim 1, characterized in that: The second heat insulating component is in the shape of a circular ring, the inner diameter of the second heat insulating component is smaller than the inner diameter of the melting crucible, and the outer diameter of the second heat insulating component is larger than the outer diameter of the melting crucible.

5. The permanent magnetic stirring differential pressure furnace lower kettle system according to claim 1, characterized in that: The cover body is in the shape of a circular ring as a whole, the upper end of the cover body matches with the top of the resistance furnace body, and the lower end of the cover body matches with the second heat insulation component.

6. The permanent magnetic stirring differential pressure furnace lower kettle system according to claim 1, characterized in that: The lower kettle body includes a lower kettle body main body, a lower kettle body flange arranged on the upper part of the lower kettle body main body and integrally connected to the lower kettle body main body, and a lower kettle body middle partition fixedly assembled on the lower kettle body flange. The lower kettle body main body is generally cylindrical with an open upper end, and a threading channel connected to the inner side of the lower kettle body main body is arranged on the side wall of the lower kettle body.

7. The permanent magnetic stirring differential pressure furnace lower kettle system according to claim 6, characterized in that: A plurality of exhaust passages are arranged on the flange of the lower kettle body, and a plurality of exhaust pipes arranged on the outer side of the lower kettle body are connected with the exhaust passages in a one-to-one correspondence.

8. The permanent magnetic stirring differential pressure furnace lower kettle system according to claim 1, characterized in that: The resistance furnace body includes a furnace body, an electric heating element and a third heat insulating component. The furnace body is generally cylindrical with an open upper end. The electric heating element is coaxially arranged in a ring shape on the inner wall of the furnace body. The third heat insulating component is arranged at the bottom of the inner cavity of the furnace body.

9. The permanent magnetic stirring differential pressure furnace lower kettle system according to claim 8, characterized in that: The permanent magnetic stirring differential pressure furnace lower kettle system comprises a resistance furnace controller, and the resistance furnace controller is electrically connected to the electric heating element inside the resistance furnace.

10. The permanent magnetic stirring differential pressure furnace lower kettle system according to claim 1, characterized in that: The permanent magnetic stirring differential pressure furnace lower kettle system comprises a permanent magnetic stirrer and a permanent magnetic stirring controller. The permanent magnetic stirrer is arranged directly below the bottom of the lower kettle, and the permanent magnetic stirring controller is electrically connected to the permanent magnetic stirrer.

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