Liquid outlet structure for intermediate frequency furnace
By connecting the drainage tube at the lower part of the intermediate frequency smelting furnace and setting up a heating unit, the problem of melt cooling and adhesion is solved, and a more stable and low-loss melt transfer process is achieved.
Patent Information
- Application Number
- CN202422083277.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-08-27
AI Technical Summary
When the existing medium-frequency smelting furnace pours out the melt, the melt will easily adhere to the inner wall after cooling to form residue, resulting in equipment damage and material loss, and the pouring process is unstable.
The drainage tube is used to communicate with the lower part of the melting furnace. A heating unit and a control valve are provided on the drainage tube. The temperature of the drainage tube is maintained through the heating unit, and the melt is drawn out from the lower part, reducing the heat exchange area and cooling speed, and avoiding the formation of attachments.
It reduces the formation of attachments after melt cooling, reduces the risk of equipment damage and material loss, and improves the stability and efficiency of melt transfer.
Smart Images
Figure CN223295238U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of metal smelting equipment, in particular to a liquid discharge structure for a medium frequency furnace. Background Art
[0002] At present, in the process of preparing aluminum alloy spherical powder with existing equipment, the molten liquid in the medium frequency melting furnace enters the tundish mainly by controlling the lifting and lowering of the hydraulic cylinder of the medium frequency melting furnace to drive the medium frequency melting furnace to tilt, and the medium frequency melting furnace tilts to pour the molten liquid into the tundish for atomization.
[0003] The above solution has some problems in use. First, after the flowable melt is poured out, part of the melt will form attachments after cooling as the temperature of the medium frequency melting furnace drops, and will adhere to the downward sloping part of the melting crucible and even the guide port. During secondary production, when cleaning the residual attachments formed by the cooling of the melt, it is inevitable that the medium frequency melting furnace crucible and the guide port will be damaged. Second, due to the distance and height of the medium frequency melting furnace crucible, the medium frequency melting furnace melt is relatively full in the initial atomization state, and the trajectory of the melt when pouring will be slightly higher. Even if a large-diameter bowl mouth is used as an expansion of the ladle, it is inevitable that the melt will spill, resulting in some material loss. Utility Model Content
[0004] In response to the above-mentioned defects, the technical problem to be solved by the present invention is to provide a liquid discharge structure for a medium frequency furnace, which can reduce the attachments attached to the inner wall of the smelting furnace after the molten liquid in the smelting furnace is cooled during the process of transferring the molten liquid in the smelting furnace to the tundish.
[0005] The above technical objectives of the present invention are achieved through the following technical solutions:
[0006] A liquid discharge structure for a medium frequency furnace comprises a smelting furnace and a drainage pipe, wherein the drainage pipe is connected to the lower part of the smelting furnace, a heating unit is provided on the drainage pipe, and a control valve is provided at the outlet end of the drainage pipe.
[0007] By adopting the above solution, since the draft tube is connected to the lower portion of the smelting furnace, the molten metal in the smelting furnace flows into the tundish through the free end of the draft tube by opening the control valve, eliminating the need to dump the smelting furnace to transfer the molten metal. Furthermore, the draft tube is equipped with a heating unit, which ensures that the temperature of the draft tube is maintained, preventing the molten metal from cooling and adhering to the inner walls of the draft tube during transfer. Since the molten metal is transferred outward from the lower portion of the smelting furnace, the heat exchange area between the molten metal in the smelting furnace and the surrounding environment is reduced compared to transferring the molten metal by dumping the smelting furnace, thereby slowing the cooling rate of the molten metal and reducing the amount of deposits that form on the inner walls of the smelting furnace after cooling. Furthermore, since the molten metal is discharged from the lower portion of the smelting furnace through the draft tube, it does not need to pass through the smelting furnace's diversion port, and naturally does not form deposits formed by the molten metal at the diversion port, thereby reducing the risk of damage to the smelting furnace due to cleaning of deposits. In addition, the smelting furnace is discharged through the drainage pipe at the bottom. The drainage pipe is closer to the tundish than the top of the smelting furnace. The molten liquid can flow into the tundish stably, reducing material loss.
[0008] The present invention is further configured such that the heating unit includes an induction heating coil, which is sleeved on the drainage tube. The induction heating coil heats the melt in the drainage tube, thereby ensuring the fluidity of the melt and preventing the melt from cooling and clogging the drainage tube.
[0009] The present invention is further configured such that the heating unit further includes a ceramic fiber sleeve, which is mounted on the drainage tube and located inside the induction heating coil. The ceramic limit sleeve can insulate the drainage tube, reduce the heat loss rate of the drainage tube, and thus save energy.
[0010] The utility model is further configured such that an insulating layer is provided on the outside of the ceramic fiber sleeve, and the induction heating coil is wrapped inside the insulating layer. The insulating layer protects the induction heating coil and ensures insulation and working stability of the induction heating coil.
[0011] The utility model is further configured such that the connection between the drainage pipe and the smelting furnace is threadedly matched. Since the connection between the drainage pipe and the smelting furnace is threadedly matched, the drainage pipe is convenient to install and remove, and the sealing performance of the connection between the smelting furnace and the drainage pipe is improved.
[0012] The utility model is further configured such that the drainage tube is made of graphite. Due to the high temperature resistance of graphite, the drainage tube is made of graphite material, which ensures the service life of the drainage tube and avoids frequent replacement of the drainage tube.
[0013] The present invention further provides that the drainage tube is in communication with the side wall of the smelting furnace. Since the drainage tube is in communication with the side wall of the smelting furnace, on the one hand, when charging into the smelting furnace, the material blocks will not directly impact the drainage tube; on the other hand, when the molten liquid in the smelting furnace needs to be completely discharged, the liquid level of the molten liquid gradually drops, and an oxide film forms on the surface of the molten liquid. Most of this oxide film is deposited on the bottom of the smelting furnace, rather than accumulating in the drainage tube, thereby preventing the oxide film on the surface of the molten liquid from blocking the drainage tube.
[0014] The utility model is further configured such that the drainage pipe is arranged horizontally. Due to the horizontal arrangement of the drainage pipe, the molten liquid in the smelting furnace can be directed horizontally into the tundish, which is beneficial to the relative arrangement of the smelting furnace and the tundish in space.
[0015] In summary, the liquid discharge structure for a medium frequency furnace provided by the present invention has at least the following beneficial effects:
[0016] 1. It reduces the attachments formed after the melt in the melting furnace cools down, thereby reducing the risk of damaging the melting furnace when cleaning the attachments.
[0017] 2. Reduce the waste of melt and reduce material loss. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without expending any novel work.
[0019] Figure 1 It is a structural diagram of the present utility model.
[0020] The reference numerals include: melting furnace 1 , heating unit 2 , induction heating coil 201 , ceramic fiber sleeve 202 , insulation layer 203 , drainage pipe 3 , control valve 4 . DETAILED DESCRIPTION
[0021] In order to make those skilled in the art better understand the technical solution of the utility model, Figure 1 The present invention is further described in detail with reference to the following specific embodiments.
[0022] See also Figure 1This embodiment provides a liquid discharge structure for an intermediate frequency furnace, comprising a smelting furnace 1 and a drainage pipe 3. The drainage pipe 3 is connected to the lower portion of the smelting furnace 1, and is provided with a heating unit 2. A control valve 4 is provided at the outlet end of the drainage pipe 3. The control valve 4 is conventional and is used to control the opening and closing of the drainage pipe 3.
[0023] By adopting the above solution, since the draft tube 3 is connected to the lower portion of the smelting furnace 1, when in use, the molten metal in the smelting furnace 1 flows into the tundish through the draft tube 3 by opening the control valve 4, eliminating the need to dump the smelting furnace 1 to transfer the molten metal. Furthermore, the heating unit 2 provided on the draft tube 3 ensures that the temperature of the draft tube 3 is maintained, preventing the molten metal from cooling and adhering to the inner wall of the draft tube 3 during transfer. Since the molten metal is transferred outward from the lower portion of the smelting furnace 1, the heat exchange area between the molten metal in the smelting furnace 1 and the surrounding environment is reduced compared to transferring the molten metal by dumping the smelting furnace 1. This slows the cooling rate of the molten metal and reduces the amount of deposits that form on the inner wall of the smelting furnace 1 after cooling. Furthermore, since the molten metal is discharged from the lower portion of the smelting furnace 1 through the draft tube 3, it does not need to pass through the smelting furnace 1's diversion port. Naturally, deposits formed by the molten metal cooling at the diversion port will not form, thereby reducing the risk of damage to the smelting furnace 1 due to cleaning of deposits. In addition, the smelting furnace 1 is discharged through the lower drainage pipe 3. The drainage pipe 3 is closer to the tundish than the top of the smelting furnace 1. The molten liquid can flow into the tundish stably, reducing material loss.
[0024] In some embodiments, the heating unit 2 includes an induction heating coil 201, which is sleeved around the drainage tube 3. The induction heating coil 201 is arranged axially along the drainage tube 3. To achieve energy conservation and heat preservation, the heating unit 2 also includes a ceramic fiber sleeve 202, which is sleeved around the drainage tube 3 and located inside the induction heating coil 201. An insulating layer 203 is provided on the outside of the ceramic fiber sleeve 202, and the induction heating coil 201 is wrapped inside the insulating layer 203.
[0025] To facilitate installation and removal of the drainage tube 3, the connection between the drainage tube 3 and the smelting furnace 1 is threaded. Specifically, the drainage tube 3 is arranged horizontally. The left end of the drainage tube 3 is provided with an external thread. Accordingly, a mounting opening for the drainage tube 3 is provided at the connection between the smelting furnace 1 and the drainage tube 3. The mounting opening is provided with an internal thread that matches the external thread of the drainage tube 3. The left end of the drainage tube 3 is threadedly connected to the mounting opening.
[0026] The drainage pipe 3 can be made of graphite material with good high temperature resistance in the prior art. The drainage pipe 3 is connected to the side wall of the smelting furnace 1. The connection point between the drainage pipe 3 and the smelting furnace 1 is close to the inner bottom of the smelting furnace 1, which facilitates the discharge of the melt in the smelting furnace 1.
[0027] It should be noted that the words indicating direction in this article, such as up and down, are all based on Figure 1 The setting of the direction is only for the convenience of description and has no other specific meaning.
[0028] It should also be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such article or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the article or device comprising the aforementioned elements.
[0029] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help you understand the core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.
Claims
1. A liquid discharge structure for a medium frequency furnace, comprising a smelting furnace (1), characterized in that: It also includes a drainage pipe (3), which is connected to the lower part of the smelting furnace (1), a heating unit (2) is provided on the drainage pipe (3), and a control valve (4) is provided at the outlet end of the drainage pipe (3).
2. A liquid outlet structure for a medium frequency furnace as claimed in claim 1, characterized in that: The heating unit (2) comprises an induction heating coil (201), and the induction heating coil (201) is sleeved on the drainage tube (3).
3. A liquid outlet structure for a medium frequency furnace as claimed in claim 2, characterized in that: The heating unit (2) further comprises a ceramic fiber sleeve (202), which is sleeved on the drainage tube (3) and located inside the induction heating coil (201).
4. A liquid outlet structure for a medium frequency furnace as claimed in claim 3, characterized in that: An insulating layer (203) is provided on the outside of the ceramic fiber sleeve (202), and the induction heating coil (201) is wrapped inside the insulating layer (203).
5. A liquid outlet structure for a medium frequency furnace according to any one of claims 1 to 4, characterized in that: The drainage pipe (3) is threadedly engaged with the connection point of the smelting furnace (1).
6. A liquid discharge structure for a medium frequency furnace as claimed in claim 5, characterized in that: The drainage tube (3) is made of graphite.
7. A liquid discharge structure for a medium frequency furnace as claimed in claim 5, characterized in that: The draft tube (3) is in communication with the side wall of the smelting furnace (1).
8. A liquid discharge structure for a medium frequency furnace as claimed in claim 7, characterized in that: The drainage tube (3) is arranged horizontally.