Smelting crucible
By introducing a liquid outlet and a drainage tube into the melting crucible, combined with induction heating and a protective layer design, the problems of discontinuous melting and material loss are solved, achieving efficient continuous melting and reducing losses.
Patent Information
- Application Number
- CN202422083283.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-08-27
AI Technical Summary
Existing melting crucibles cannot achieve continuous melting, and the material loss is large when the melt is poured out.
A crucible body with a liquid outlet and a drainage tube is designed. The metal raw material is heated by an induction heating coil and the molten liquid is introduced into the tundish through the drainage tube to avoid dumping operation. The insulation layer, refractory layer, magnetic yoke and shielding coil are combined to improve efficiency and reduce losses.
Continuous smelting is achieved, production efficiency is improved, and material loss during the transfer process is reduced.
Smart Images
Figure CN223400138U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of metal smelting equipment, in particular to a smelting crucible. Background Art
[0002] At present, most melting crucibles adopt the upper edge opening and tilting method for pouring liquid. The upper edge of the crucible is opened, and a flow channel is built using sealing material. Then the furnace body is flipped by a hydraulic or electric flipping device to tilt the crucible, and the molten metal flows into the ladle crucible through the flow channel.
[0003] The above solution has some problems in use. First, the melting crucible can only be used to melt one furnace, and then add another furnace of raw materials for melting after the melt is poured out, which cannot achieve continuous melting. Second, because the top of the crucible of the medium frequency melting furnace is far away from the tundish, the trajectory of the melt when pouring out will be slightly higher. Even if a large-diameter bowl mouth is used as an expansion of the tundish, it is inevitable that the melt will spill, resulting in some material loss. Utility Model Content
[0004] In view of the above-mentioned defects, the technical problem to be solved by the present invention is to provide a melting crucible that can continuously melt raw materials and reduce the loss of materials during the process of transferring from the melting crucible to the tundish.
[0005] The above technical objectives of the present invention are achieved through the following technical solutions:
[0006] A smelting crucible comprises a crucible body, a liquid outlet is provided on the side of the lower part of the crucible body, the liquid outlet is connected with a drainage pipe, and an induction heating coil is arranged outside the crucible body.
[0007] By adopting the above scheme, the metal raw material is added to the crucible body, and the metal raw material in the crucible body is heated by the induction heating coil, so that the metal raw material is melted to form a melt. The melt is discharged through the drainage tube, and the drainage tube guides the melt to the top of the tundish and flows into the tundish. There is no need to pour the melt into the tundish by dumping, nor is there any need to stop the machine for adding materials. During the smelting process, the material can be continuously added, thereby achieving the effect of continuous smelting of raw materials, thereby improving production efficiency. In addition, since the liquid outlet is arranged at the lower part of the crucible body, the outlet end of the drainage tube is closer to the tundish. When the melt enters the tundish through the outlet end of the drainage tube, the falling height of the melt is lower, so that the melt is not easy to splash out, reducing the loss of raw materials.
[0008] The present invention is further configured such that an insulating layer is provided outside the crucible body, and the induction heating coil is located inside the insulating layer.
[0009] The present invention further provides a refractory layer at the bottom of the crucible body and between the crucible body and the insulating layer. The refractory layer can effectively prevent the induction heating coil from overheating, maintain heat, and reduce heat loss, thereby significantly reducing power consumption and extending service life.
[0010] The utility model is further configured such that a magnetic yoke is provided outside the insulating layer. The magnetic yoke shielding can restrain the leakage magnetic flux of the induction coil from spreading outward, thereby reducing the leakage magnetic flux and improving the smelting efficiency.
[0011] The present invention is further configured such that a shielding coil is provided on the top of the magnetic yoke and is sleeved outside the insulating layer. The shielding coil can confine external interference signals to the area around the coil to ensure the stability of the circuit.
[0012] The present invention is further configured such that a preset distance exists between the lower edge of the liquid outlet and the bottom of the inner side of the crucible body. During the smelting process, an oxide film forms on the surface of the melt in the crucible body. During the process of completely discharging the melt in the crucible body, the oxide film drops along with the liquid level of the melt, and eventually most of the oxide film is deposited on the bottom of the crucible body. After cooling, the oxide film forms hard attachments that need to be removed before the next smelting. Since the lower edge of the liquid outlet is at a preset distance from the bottom of the inner side of the crucible body, the oxide film is deposited at a position lower than the lower edge of the liquid outlet. When removing these attachments, the portion of the drainage tube located inside the liquid outlet will not be shoveled, thereby reducing the risk of damage to the drainage tube during the removal process.
[0013] The present invention is further configured such that the preset distance is 10 mm.
[0014] The utility model is further configured such that a control valve is provided on the drainage tube, and the drainage tube can be conveniently opened or closed by the control valve.
[0015] In summary, the smelting crucible provided by the present invention has at least the following beneficial effects:
[0016] 1. It can continuously smelt metal raw materials and improve production efficiency.
[0017] 2. Reduce the material loss during the process of transferring the melt from the crucible body to the tundish. 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 utility model;
[0020] Figure 2 It is a structural schematic diagram of the present utility model (the drainage tube is hidden).
[0021] The reference numerals include: crucible body 1 , liquid outlet 2 , drainage tube 3 , insulation layer 4 , induction heating coil 5 , control valve 6 , refractory layer 7 , magnetic yoke 8 , shielding coil 9 . DETAILED DESCRIPTION
[0022] In order to make those skilled in the art better understand the technical solution of the utility model, Figure 1-2 The present invention is further described in detail with reference to the following specific embodiments.
[0023] See also Figure 1-2 The present embodiment provides a smelting crucible, comprising a crucible body 1, a liquid outlet 2 being provided on the side of the lower portion of the crucible body 1, and the liquid outlet 2 being connected to a drainage pipe 3. Preferably, the outlet of the drainage pipe 3 is vertically downward, corresponding to the inlet of the tundish, so as to facilitate the entry of the molten liquid into the tundish. An insulating layer 4 is provided on the outside of the crucible body 1, and an induction heating coil 5 is provided inside the insulating layer 4. Specifically, each layer of the induction heating coil 5 is filled and protected with an insulating slurry to form an insulating layer 4, which wraps the heating coil inside. A control valve 6 is provided on the drainage pipe 3. A refractory layer 7 is provided at the bottom of the crucible body 1 and between the crucible body 1 and the insulating layer 4. The refractory layer 7 can be made of a refractory dry vibration material in the prior art. The refractory layer 7 between the crucible body 1 and the insulating layer 4 is used to separate the crucible body 1 from the insulating layer 4, and the refractory layer 7 at the bottom of the crucible body 1 is used to separate the crucible body 1 from the carrier that supports the crucible body 1. A magnetic yoke 8 is provided outside the insulating layer 4. The magnetic yoke 8 can specifically be a yoke iron made of stacked silicon steel sheets in the prior art, and is evenly distributed around the induction heating coil 5. A shielding coil 9 is provided on the top of the magnetic yoke 8, and the shielding coil 9 is sleeved outside the insulating layer 4. There is a preset distance between the lower edge of the liquid outlet 2 and the bottom of the inner side of the crucible body 1. In this embodiment, the preset distance is preferably 10 mm. The drainage tube 3 is preferably located at one end inside the liquid outlet 2 and is threadedly connected to the liquid outlet 2. The insulating layer 4 and the magnetic yoke 8 are arranged to avoid the drainage tube 3, and a channel for the drainage tube 3 to pass through is formed on the insulating layer 4 and the magnetic yoke 8.
[0024] By adopting the above scheme, when in use, metal raw materials are added to the crucible body 1, and the metal raw materials in the crucible body 1 are heated by the induction heating coil 5, so that the metal raw materials are melted to form a melt. The melt is discharged through the drainage tube 3, and the drainage tube 3 guides the melt to the top of the tundish and flows into the tundish. There is no need to pour the melt into the tundish by pouring, nor is there any need to stop the machine to add materials. During the smelting process, materials can be continuously added, thereby achieving the effect of continuous smelting of raw materials, thereby improving production efficiency. In addition, since the liquid outlet 2 is arranged at the lower part of the crucible body 1, the outlet end of the drainage tube 3 is closer to the tundish. When the melt enters the tundish through the outlet end of the drainage tube 3, the falling height of the melt is relatively low, so that the melt is not easy to splash out, reducing the loss of raw materials.
[0025] 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.
[0026] 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.
[0027] 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 melting crucible, characterized in that: The crucible body (1) comprises a crucible body, wherein a liquid outlet (2) is provided on the side of the lower portion of the crucible body (1), the liquid outlet (2) is connected to a drainage pipe (3), and an induction heating coil (5) is provided outside the crucible body (1).
2. A melting crucible according to claim 1, characterized in that: An insulating layer (4) is provided outside the crucible body (1), and the induction heating coil (5) is located inside the insulating layer (4).
3. A melting crucible according to claim 2, characterized in that: A refractory layer (7) is provided at the bottom of the crucible body (1) and between the crucible body (1) and the insulating layer (4).
4. A melting crucible according to claim 2 or 3, characterized in that: A magnetic yoke (8) is provided outside the insulating layer (4).
5. A melting crucible according to claim 4, characterized in that: A shielding coil (9) is provided on the top of the magnetic yoke (8), and the shielding coil (9) is sleeved outside the insulating layer (4).
6. A melting crucible according to claim 1, characterized in that: There is a preset distance between the lower edge of the liquid outlet (2) and the bottom of the inner side of the crucible body (1).
7. A melting crucible according to claim 6, characterized in that: The preset distance is 10 mm.
8. A melting crucible according to claim 1, characterized in that: The drainage tube (3) is provided with a control valve (6).