Resistance material electric insulation structure for graphitization furnace

Abstract

The utility model discloses a resistance material electric insulation structure for a graphitization furnace, which comprises a shell layer, a heat preservation material layer, an accommodating layer, a resistance material and a carbon stick, and the heat preservation material layer comprises a heat preservation material filled in the shell layer; the containing layer comprises a plurality of crucibles, and the crucibles are arranged on the inner side of the heat preservation material layer side by side; the resistance material is positioned in the heat preservation material layer and is filled in gaps among the crucibles; the carbon stick is arranged between the resistance material and the heat preservation material layer, so that the resistance material is separated from the heat preservation material layer. The technical scheme provided by the utility model has the beneficial effects that the thermal insulation material and the resistance material are separated through the carbon paste, so that the thermal insulation material and the resistance material can be prevented from being mixed, the repeated use frequency of the thermal insulation material and the resistance material is increased, meanwhile, the electric insulation effect on the resistance material can be improved, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of graphitization furnaces, in particular to an electric insulation structure for resistance materials of a graphitization furnace. Background Art

[0002] Graphitization refers to a main production process or production step in the production of carbon graphite materials, in which amorphous carbon materials are transformed into graphite materials at high temperatures (above 2500 °C). Carbon graphite material products are widely used in various industries such as smelting, machinery, chemical industry, electronics, aviation, transportation, lithium battery energy storage, and medical treatment. It is an energy storage material with excellent electrical conductivity, high temperature resistance, wear resistance, and self-lubrication properties, and is also an indispensable and irreplaceable material in modern industry, civil use, and national defense. The high-temperature graphitization production of carbon graphite materials is an essential production process.

[0003] Existing graphitization furnaces usually need to use heat-insulating materials to maintain the temperature inside the furnace. The heat-insulating materials are usually powdery materials such as carbon black. When loading the furnace, the heat-insulating materials need to be loaded into the graphitization furnace first, then the crucibles are loaded, and then the heat-insulating materials are loaded again. When discharging the furnace, the heat-insulating materials need to be sucked out. However, the heat-insulating materials and the resistance materials are not completely separated, resulting in a mixing phenomenon between the heat-insulating materials and the resistance materials, greatly reducing the reuse times of the heat-insulating materials and the resistance materials, and at the same time reducing the electrical insulation effect of the resistance materials. Summary of the Utility Model

[0004] In view of this, it is necessary to provide an electric insulation structure for resistance materials of a graphitization furnace to solve the technical problem that the heat-insulating materials and the resistance materials of the existing graphitization furnace are not completely separated, resulting in a mixing phenomenon between the heat-insulating materials and the resistance materials, greatly reducing the reuse times of the heat-insulating materials and the resistance materials, and at the same time reducing the electrical insulation effect of the resistance materials.

[0005] To achieve the above object, the utility model provides an electric insulation structure for resistance materials of a graphitization furnace, including:

[0006] An outer shell layer;

[0007] A heat-insulating material layer, the heat-insulating material layer including heat-insulating materials filled in the outer shell layer;

[0008] A containing layer, the containing layer including a plurality of crucibles, and each of the crucibles is arranged side by side inside the heat-insulating material layer;

[0009] Resistance materials, the resistance materials are located in the heat-insulating material layer and filled in the gaps between the crucibles; and,

[0010] Carbon adhesive, the carbon adhesive is arranged between the resistance materials and the heat-insulating material layer to separate the resistance materials from the heat-insulating material layer.

[0011] In some embodiments, the outer shell layer includes a steel plate layer and a brick wall layer. The steel plate layer encloses a sealed first receiving cavity, and the brick wall layer is fixed to the inner side of the steel plate layer.

[0012] In some embodiments, a first inlet is formed in the upper end surface of the steel plate layer, and a second inlet aligned with the first inlet is formed in the upper end surface of the brick wall layer. A cover plate is detachably disposed in the first inlet and the second inlet.

[0013] In some embodiments, the heat-insulating material layer includes an upper heat-insulating material layer and a lower heat-insulating material layer. The lower heat-insulating material layer is located below the crucible, and the upper heat-insulating material layer is located above the crucible.

[0014] In some embodiments, the upper end surface of the lower heat-insulating material layer is a horizontal plane.

[0015] In some embodiments, the carbon adhesive includes a lower carbon adhesive and an upper carbon adhesive. The lower carbon adhesive is located between the lower heat-insulating material layer and the resistance material, and the upper carbon adhesive is located between the resistance material and the upper heat-insulating material layer.

[0016] In some embodiments, the upper end surfaces of the lower carbon adhesives are flush.

[0017] In some embodiments, the upper end surfaces of the upper carbon adhesives are flush with the upper end surfaces of the crucibles.

[0018] In some embodiments, the thicknesses of the lower carbon adhesive and the upper carbon adhesive are both greater than a preset thickness.

[0019] In some embodiments, the resistance material electrical insulation structure for the graphitization furnace further includes a first wiring terminal and a second wiring terminal. The first wiring terminal is electrically connected to one end of the resistance material, and the second wiring terminal is electrically connected to the other end of the resistance material.

[0020] Compared with the prior art, the beneficial effects of the technical solution proposed by the present utility model are as follows: During charging, the materials to be graphitized are loaded into each crucible, and then the heat-insulating material is filled into the inner bottom surface and inner side surface of the outer shell layer to form a heat-insulating material layer. Then, each crucible is placed on the heat-insulating material layer. Next, carbon paste is first placed in the gaps between the crucibles, and then the resistance material is filled into the gaps between adjacent crucibles. Then, additional carbon paste is placed on the upper end of the resistance material. Subsequently, additional heat-insulating material is filled above the crucibles. Then, the outer shell layer is closed. During heating, the resistance material is energized, and the resistance heat is generated by the resistance material, thereby heating the materials in the crucibles and graphitizing them. After heating is completed, after the materials in the crucibles are cooled, the outer shell layer is opened, and then the heat-insulating material located in the upper layer is sucked out. Then, each crucible is taken out, and then the materials in the crucibles are taken out. After that, the resistance material and the carbon paste are recycled to achieve discharging. The present utility model separates the heat-insulating material from the resistance material through the carbon paste, which can prevent the heat-insulating material from mixing with the resistance material, increase the number of times the heat-insulating material and the resistance material can be reused, and at the same time, can also improve the electrical insulation effect of the resistance material and enhance safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 FIG. is a schematic structural diagram of an embodiment of the electrical insulation structure of the resistance material for a graphitizing furnace provided by the present utility model;

[0022] Figure 2 is Figure 1 a partial enlarged view of area A in;

[0023] Figure 3 is Figure 1 a partial enlarged view of area B in;

[0024] In the figure: 1 - outer shell layer, 11 - steel plate layer, 12 - brick wall layer, 2 - heat-insulating material layer, 21 - upper heat-insulating material layer, 22 - lower heat-insulating material layer, 3 - accommodating layer, 31 - crucible, 4 - resistance material, 5 - carbon paste, 51 - lower carbon paste, 52 - upper carbon paste, 6 - first terminal, 7 - second terminal. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following will specifically describe the preferred embodiments of the present utility model in conjunction with the drawings, where the drawings form a part of this application and are used together with the embodiments of the present utility model to explain the principles of the present utility model, and are not used to limit the scope of the present utility model.

[0026] Please refer to Figures 1 - 3 , the present utility model provides an electrical insulation structure of a resistance material for a graphitizing furnace, including an outer shell layer 1, a heat-insulating material layer 2, an accommodating layer 3, a resistance material 4, and a carbon paste 5;

[0027] The heat-insulating material layer 2 includes heat-insulating material filled in the outer shell layer 1;

[0028] The accommodating layer 3 includes a plurality of crucibles 31, and each of the crucibles 31 is arranged side by side inside the heat-insulating material layer 2;

[0029] The resistance material 4 is located inside the heat-insulating material layer 2 and fills the gaps between the crucibles 31; since the shape of the crucible 31 is cylindrical, and when arranging each crucible 31, a certain gap is reserved, so that the resistance materials 4 at different positions can be connected in series as a whole, which is convenient for supplying power to the resistance material 4.

[0030] The carbon adhesive 5 is arranged between the resistance material 4 and the heat-insulating material layer 2, thereby separating the resistance material 4 from the heat-insulating material layer 2.

[0031] During charging, the materials to be graphitized are loaded into each crucible 31, and then the heat-insulating material is filled on the inner bottom surface and inner side surface of the outer shell layer 1 to form the heat-insulating material layer 2. Then, each crucible 31 is placed on the heat-insulating material layer 2. Then, the carbon adhesive 5 is first placed in the gaps between the crucibles 31, and then the resistance material 4 is filled in the gaps between adjacent crucibles 31. Then, another carbon adhesive 5 is placed on the upper end of the resistance material 4. Then, another heat-insulating material is filled above the crucibles 31. Then, the outer shell layer 1 is closed. During heating, the resistance material 4 is electrified, and the resistance material 4 generates resistance heat, thereby heating the materials in the crucibles 31, so as to graphitize them. After heating is completed, after the materials in the crucibles 31 are cooled, the outer shell layer 1 is opened, and then the heat-insulating material located in the upper layer is sucked out. Then, each crucible 31 is taken out, and then the materials in the crucibles 31 are taken out. After that, the resistance material 4 and the carbon adhesive 5 are recycled, thereby realizing discharging. By separating the heat-insulating material from the resistance material 4 through the carbon adhesive 5, the present invention can prevent the heat-insulating material from being mixed with the resistance material 4, improve the reuse times of the heat-insulating material and the resistance material 4, and at the same time, can also improve the electrical insulation effect on the resistance material 4 and improve safety.

[0032] In order to specifically implement the function of the outer shell layer 1, please refer to Figures 1 - 3 , in a preferred embodiment, the outer shell layer 1 includes a steel plate layer 11 and a brick wall layer 12. The steel plate layer 11 encloses a closed first receiving cavity, and the brick wall layer 12 is fixed inside the steel plate layer 11.

[0033] In order to facilitate the placement of the heat-insulating material box 21 and the crucibles 31, please refer to Figures 1 - 3 , in a preferred embodiment, a first inlet is provided on the upper end surface of the steel plate layer 11, a second inlet aligned with the first inlet is provided on the upper end surface of the brick wall layer 12, and a cover plate is detachably arranged in the first inlet and the second inlet.

[0034] In order to specifically implement the function of the heat-insulating material layer 2, please refer toFigures 1 - 3 , in a preferred embodiment, the heat-insulating material layer 2 includes an upper heat-insulating material layer 21 and a lower heat-insulating material layer 22. The lower heat-insulating material layer 22 is located below the crucible 31, and the upper heat-insulating material layer 21 is located above the crucible 31.

[0035] To improve the stability of the crucible 31, please refer to Figures 1 - 3 , in a preferred embodiment, the upper end surface of the lower heat-insulating material layer 22 is a horizontal plane. Thus, when placing the crucible 31, it can prevent the crucible 31 from tilting and tipping over.

[0036] To specifically implement the function of the carbon adhesion 5, please refer to Figures 1 - 3 , in a preferred embodiment, the carbon adhesion 5 includes a lower carbon adhesion 51 and an upper carbon adhesion 52. The lower carbon adhesion 51 is located between the lower heat-insulating material layer 22 and the resistance material 4, and the upper carbon adhesion 52 is located between the resistance material 4 and the upper heat-insulating material layer 21.

[0037] To improve the continuity of the resistance material, please refer to Figures 1 - 3 , in a preferred embodiment, the upper end surfaces of the lower carbon adhesions 51 are flush.

[0038] To facilitate the placement of the upper heat-insulating material layer 21, please refer to Figures 1 - 3 , in a preferred embodiment, the upper end surfaces of the upper carbon adhesions 52 are flush with the upper end surfaces of the crucibles 31, thereby forming a flat surface for placing the upper-layer heat-insulating material.

[0039] To improve the electrical insulation effect of the lower carbon adhesion 51 and the upper carbon adhesion 52, please refer to Figures 1 - 3 , in a preferred embodiment, the thicknesses of the lower carbon adhesion 51 and the upper carbon adhesion 52 are both greater than a preset thickness.

[0040] To specifically implement the heating function of the graphitization furnace, please refer to Figures 1 - 3 , in a preferred embodiment, the electrical insulation structure of the resistance material for the graphitization furnace further includes a first wiring terminal 6 and a second wiring terminal 7. The first wiring terminal 6 is electrically connected to one end of the resistance material 4, and the second wiring terminal 7 is electrically connected to the other end of the resistance material 4. During use, the first wiring terminal 6 and the second wiring terminal 7 are respectively electrically connected to the positive output terminal and the negative output terminal of the transformer. When the current passes through the resistance material 4, the resistance material 4 generates heat, thereby heating the material in the crucible 31 to make it graphitized.

[0041] To better understand the present invention, the following is combined with Figures 1 - 3The working process of the electric insulation structure of the resistance material for the graphitization furnace provided by the present utility model will be described in detail: During charging, the materials to be graphitized are loaded into each crucible 31, and then the heat-insulating material is filled into the inner bottom surface and inner side surface of the outer shell layer 1 to form the heat-insulating material layer 2. Then, each crucible 31 is placed on the heat-insulating material layer 2. Next, carbon adhesive 5 is first placed in the gaps between the crucibles 31, and then the resistance material 4 is filled into the gaps between adjacent crucibles 31. Then, another carbon adhesive 5 is placed on the upper end of the resistance material 4. After that, another heat-insulating material is filled above the crucibles 31, and then the outer shell layer 1 is closed. During heating, the resistance material 4 is energized, and the resistance material 4 generates resistance heat, thereby heating the materials in the crucibles 31 and graphitizing them. After heating is completed, after the materials in the crucibles 31 are cooled, the outer shell layer 1 is opened, and the heat-insulating material located in the upper layer is sucked out. Then, each crucible 31 is taken out, and the materials in the crucibles 31 are taken out. After that, the resistance material 4 and the carbon adhesive 5 are recycled to achieve discharging. The present utility model separates the heat-insulating material from the resistance material 4 through the carbon adhesive 5, which can prevent the heat-insulating material from being mixed with the resistance material 4, improve the reuse times of the heat-insulating material and the resistance material 4, and at the same time, can also improve the electric insulation effect of the resistance material 4 and enhance safety.

[0042] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application 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. Therefore, it should not be construed as a limitation to the present application. Unless otherwise clearly specified and defined, the terms "installed", "connected" and "connected" 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 directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0043] It should be noted that in this application, relational terms such as "first" and "second" are only used 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 "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0044] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A resistor material electrical insulation structure for a graphitization furnace, characterized in that: include: Shell layer; A thermal insulation material layer, wherein the thermal insulation material layer comprises a thermal insulation material filled in the outer shell layer; A containing layer, the containing layer comprising a plurality of crucibles, each of the crucibles being arranged side by side on the inner side of the heat-insulating material layer; A resistor material, the resistor material is located in the thermal insulation material layer and filled in the gaps between the crucibles; as well as, Carbon adhesive is arranged between the resistor material and the thermal insulation material layer, so as to separate the resistor material from the thermal insulation material layer.

2. The electrical insulation structure of the resistor material for the graphitization furnace according to claim 1, characterized in that: The outer shell layer includes a steel plate layer and a brick wall layer. The steel plate layer encloses a closed first receiving cavity, and the brick wall layer is fixed on the inner side of the steel plate layer.

3. The electrical insulation structure of the resistor material for the graphitization furnace according to claim 2, characterized in that: A first inlet is formed on the upper end surface of the steel plate layer, and a second inlet aligned with the first inlet is formed on the upper end surface of the brick wall layer. Cover plates are detachably provided in the first inlet and the second inlet.

4. The electrical insulation structure of the resistor material for the graphitization furnace according to claim 1, characterized in that: The thermal insulation material layer comprises an upper thermal insulation material layer and a lower thermal insulation material layer, the lower thermal insulation material layer is located below the crucible, and the upper thermal insulation material layer is located above the crucible.

5. The electrical insulation structure of the resistor material for the graphitization furnace according to claim 4, characterized in that: The upper end surface of the lower thermal insulation material layer is a horizontal plane.

6. The electrical insulation structure of the resistor material for the graphitization furnace according to claim 4, characterized in that: The carbon adhesive comprises a lower carbon adhesive and an upper carbon adhesive, wherein the lower carbon adhesive is located between the lower thermal insulation material layer and the resistor material, and the upper carbon adhesive is located between the resistor material and the upper thermal insulation material layer.

7. The electrical insulation structure of the resistor material for the graphitization furnace according to claim 6, characterized in that: The upper end surfaces of each of the lower carbon sticks are flush.

8. The electrical insulation structure of the resistor material for the graphitization furnace according to claim 6, characterized in that: The upper end surface of each of the upper carbon sticks is flush with the upper end surface of each of the crucibles.

9. The electrical insulation structure of the resistor material for the graphitization furnace according to claim 6, characterized in that: The thickness of the lower carbon adhesive and the upper carbon adhesive are both greater than a preset thickness.

10. The electrical insulation structure of the resistor material for the graphitization furnace according to claim 1, characterized in that: The electrical insulation structure of the resistor material for the graphitization furnace further includes a first terminal and a second terminal, wherein the first terminal is electrically connected to one end of the resistor material, and the second terminal is electrically connected to the other end of the resistor material.

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