Sagger high-temperature roasting graphitization furnace
By setting internal and external heating electrodes and a cleaning rack structure inside the graphitization furnace, the problem of uneven heating of the sagger is solved, achieving uniform heating and automatic cleaning of the sagger, thereby improving the roasting quality and equipment life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN KERISBO NEW MATERIALS CO LTD
- Filing Date
- 2025-06-09
- Publication Date
- 2026-05-05
AI Technical Summary
The external placement of heating elements in existing graphitization furnaces leads to uneven heating in the central area of the furnace, creating a significant temperature gradient and affecting the uniform heating of the sagger.
An inner ring of inner heating electrodes and an outer ring of outer heating electrodes are set inside the graphitization furnace. Combined with the central through hole of the hanger and the tray structure, uniform heating of the sagger is achieved, and the deposits on the surface of the heating electrodes are automatically cleaned by the cleaning rack and scraper.
This method achieves uniform heating from multiple sides of the sagger, avoids temperature gradients, improves sintering quality, and prevents increased resistance and cracking risk caused by deposits through an automatic cleaning mechanism.
Smart Images
Figure CN224202189U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of graphitization furnace technology, and in particular relates to a high-temperature calcination graphitization furnace in a sagger. Background Technology
[0002] A graphitization furnace is an industrial furnace specifically designed for high-temperature graphitization of carbon materials. It uses a sagger as a container to hold the material and heats it in a protective atmosphere (such as nitrogen or argon) at high temperatures (usually exceeding 2500°C) to transform the amorphous carbon structure in the carbon material into a highly ordered graphite crystal structure (i.e., graphitization).
[0003] Currently, heating elements (such as graphite electrodes) are usually arranged in the outer ring area of the furnace, while the inner ring is used to place the saggers. The external placement of the heating elements causes uneven heating in the central area of the furnace, forming a significant temperature gradient, which makes it impossible for the stacked saggers to be heated evenly.
[0004] To address the aforementioned problems, this application proposes a high-temperature calcination graphitization furnace using a sagger. Utility Model Content
[0005] The purpose of this invention is to provide a high-temperature calcination graphitization furnace in a sagger, which solves the problems mentioned in the background art.
[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0007] This utility model is a high-temperature calcination graphitization furnace in a sagger, comprising a graphitization furnace and a hanging frame;
[0008] The center of the hanger has a through hole, and the main body is a tray with upper and lower layers. Hooks are distributed around the bottom of the tray.
[0009] The graphitization furnace is equipped with an outer ring of outer heating electrodes and an inner ring of inner heating electrodes. The adjacent inner heating electrodes are evenly distributed circumferentially and pass through the holes of the hanger.
[0010] The graphitization furnace is provided with a base at the bottom, and an eccentric guide slope is provided inside the base. A coaxial cleaning frame is movably installed on the top of the base. A covering cylinder is fixedly installed on both the inner and outer sides of the cleaning frame and is sleeved on the outer side of the inner heating electrode and the outer heating electrode. Scrapers are fixed at the upper and lower ends of the covering cylinder.
[0011] The hook moves downwards to the bottom of the cleaning rack to form a latch.
[0012] Preferably, the central region of the graphitization furnace is provided with circumferentially distributed support rods, the upper ends of which are connected to the plate at the upper end of the fixed internal heating electrode.
[0013] Preferably, the lower end of the guide slope is provided with a positioning hole with a downward opening, which is coaxial with the limiting hole on the right side of the bottom of the graphitization furnace.
[0014] Preferably, a collection tube is installed inside the limiting hole, with its upper end abutting against the junction of the limiting hole and the positioning hole.
[0015] Preferably, the main body of the cleaning rack consists of an outer ring frame of the inner ring and an inner ring frame of the outer ring, which are fixedly connected by a connecting rod.
[0016] Preferably, the covering cylinders are distributed on the inner side of the outer ring frame and the outer side of the inner ring frame.
[0017] Preferably, the lower end of the hook has a protruding locking block on its inner side, which has an upper bevel and a lower bevel, and the junction of the two bevels is adjacent to the inner edge of the inner ring frame.
[0018] This utility model has the following beneficial effects:
[0019] This invention utilizes internal heating electrodes distributed circumferentially around the center of a graphitization furnace and a hollow hanging structure, combined with external heating electrodes on the outer ring, to achieve bidirectional heating of the sagger during the roasting process. This ensures that different surfaces of the sagger at different locations can be uniformly heated, thus solving the problem of temperature gradient.
[0020] This invention, by adding a cleaning rack, can automatically engage the locking block below the hanger when it descends. When the hanger moves out, it drives the scraper to remove deposits on the outer surfaces of the external and internal heating electrodes. When it moves to the highest point, the locking block automatically separates, allowing the cleaning rack to descend and perform a secondary cleaning. This prevents deposits from accumulating on the surfaces of the external and internal heating electrodes for a long time, thus increasing resistance and improving thermal efficiency. At the same time, it prevents the risk of cracks and other fractures caused by impurities penetrating.
[0021] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 This is an exploded structural diagram of the interior and hanging frame of the graphitization furnace of this utility model;
[0024] Figure 2 This is a schematic diagram of the external structure of the graphitization furnace of this utility model;
[0025] Figure 3 This is a schematic diagram of the internal structure of the graphitization furnace of this utility model;
[0026] Figure 4 This is a schematic diagram of the bottom planar structure of the graphitization furnace of this utility model;
[0027] Figure 5 This is a partially enlarged structural diagram of part A of this utility model;
[0028] Figure 6 This is a schematic diagram of the combined structure of the hanger and cleaning rack of this utility model;
[0029] The attached diagram lists the components represented by each number as follows:
[0030] In the picture:
[0031] 1. Graphitization furnace; 2. Hanging rack;
[0032] 21. Pallet; 22. Hook; 23. Clip;
[0033] 31. External heating electrode; 32. Internal heating electrode; 321. Support rod;
[0034] 41. Base; 42. Collection pipe; 43. Guide slope; 44. Limiting hole; 45. Positioning hole;
[0035] 51. Cleaning rack; 511. Outer ring rack; 512. Inner ring rack; 52. Covering cylinder; 53. Scraper blade. Detailed Implementation
[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0037] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0038] Please see Figure 1-6 As shown, this utility model is a high-temperature calcination graphitization furnace in a sagger, including a graphitization furnace 1 and a hanging frame 2. The top of the hanging frame 2 has a hook, which is lowered into the interior of the graphitization furnace 1 by a crane.
[0039] The center of the hanger 2 has a through hole, and the main body is a tray 21 with upper and lower layers. The tray 21 is a hollow plate, and hooks 22 are distributed around the bottom of the tray 21.
[0040] The graphitization furnace 1 is equipped with an outer ring of external heating electrodes 31 and an inner ring of internal heating electrodes 32. The adjacent inner ring of internal heating electrodes 32 are evenly distributed in a circular structure. When the hanger 2 is placed, they are inserted into the holes of the hanger 2, thereby forming a heating and roasting effect from the inside out. Combined with the outer ring of external heating electrodes 32, the sagger is heated evenly on multiple sides.
[0041] A base 41 is fixedly installed at the bottom of the graphitization furnace 1, located at the bottom area of the inner heating electrode 32 and the outer heating electrode. An eccentric guide slope 43 is provided inside the base 41. The upper opening edge of the guide slope 43 is adjacent to the outer edge of the base 41, and the lower opening is located near the right side of the graphitization furnace 1. A coaxial cleaning frame 51 is movably installed above the base 41. The main body of the cleaning frame 51 consists of an inner ring frame 511 and an outer ring frame 512, which are fixedly connected by a connecting rod. The outer ring frame 511 is adjacent to the outer heating electrode 32. 1. The inner ring frame 512 is adjacent to the outer side of the inner heating electrode 32. The inner ring frame 512 is sleeved on the outer side of the inner heating electrode 32 forming a circle in the central area. The inner and outer sides of the cleaning frame 51 are fixedly installed with a covering cylinder 52, which is sleeved on the outer side of the inner heating electrode 32 and the outer heating electrode 31. The upper and lower ends of the covering cylinder 52 are fixed with scrapers 53. When the cleaning frame 51 moves up and down, the scrapers 53 remove the deposits formed on the outer surface of the outer heating electrode 31 and the inner heating electrode 32 due to material volatiles, atmospheric residues and electrode reactions.
[0042] The hook 22 moves downward to the bottom of the cleaning rack 51 to form a latch. The lower end of the hook 22 has a latching block 23 protruding from the inner side, which has an upper inclined side and a lower inclined side. The intersection of the two inclined sides is close to the inner edge of the inner ring rack 512. Both the upper and lower inclined sides can form an outward rotational guiding force on the latching block 23. After the cleaning rack 51 rises to the highest point and the resistance increases, the upper inclined side forms an outward rotational guiding force on the hook 22.
[0043] Furthermore, the central area of the graphitization furnace 1 is circumferentially distributed with support rods 321, the upper end of which is connected to the plate at the upper end of the fixed inner heating electrode 32. By reinforcing the upper plate, the inner heating electrode 32 is limited, so that it maintains the temperature of the structure at high temperature and prevents plastic deformation.
[0044] Furthermore, the lower end of the guide slope 43 is provided with a positioning hole 45 with a downward opening, which is coaxial with the limiting hole 44 near the right side of the bottom of the graphitization furnace 1. The limiting hole 44 extends downward and is directly larger than the positioning hole 45, forming an end face at the junction.
[0045] Furthermore, a collection tube 42 is installed inside the limiting hole 44, with its upper end abutting against the junction of the limiting hole 44 and the positioning hole 45, thereby housing the collection tube 42 inside the limiting hole 44 and allowing the sediment to directly enter the interior of the collection tube 42 when it falls.
[0046] Furthermore, the covering cylinder 52 is distributed on the inner side of the outer ring frame 511 and the outer side of the inner ring frame 512, and is fixedly connected to the inner ring frame 512 and the outer ring frame 511 by connecting rods, respectively.
[0047] In this application, the added cleaning rack 51 and its components, as well as the support rod 321, are made of ceramic matrix composite material with a gradient honeycomb structure to resist the high temperature inside the graphitization furnace 1 and maintain normal use.
[0048] It is understandable that this utility model can form an internal and external linkage heating method during the roasting operation, so that the sagger is heated evenly on multiple sides and avoids the temperature gradient problem of the traditional outer ring heating method. At the same time, it automatically cleans the heating element during the loading and unloading process, removing the deposits formed on its surface due to material volatiles, atmosphere residues and electrode reactions.
[0049] A specific application of the operation process in this embodiment is as follows: During use, the lower part of the hanging frame 2 is lifted by a crane. When the lower shoe label of the locking block 23 abuts against the upper edge of the inner ring frame 512, it automatically rotates outward. Then, the locking block 23 automatically engages with the lower part of the inner ring frame 512. At this time, the central hole of the hanging frame 2 is fitted onto the outside of the circular structure formed by the adjacent inner heating electrodes 32. The inner heating electrodes 32 of the inner ring, combined with the outer heating electrodes 31 of the outer ring, can heat the sagger in two directions, so that the different surfaces of the sagger at different positions are heated evenly, avoiding the influence of temperature gradients, and improving the firing quality by making the sagger heat evenly. After the firing operation, the crane removes the hanging frame 2, and the inner ring frame 512 rises under the action of the locking block 23, thereby utilizing the bag The scraper 53 above the covering cylinder 52 cleans the deposits on the outer surfaces of the external heating electrode 31 and the inner heating electrode 32. When the inner ring frame 512 moves to the highest point, due to the resistance, the upper inclined edge of the locking block 23 guides the hook 22 to rotate outward, thus separating it from the cleaning frame 51. At this time, the cleaning frame 51 slowly descends under the action of gravity. The scraper 53 below the covering cylinder 52 cleans the deposits on the outer surfaces of the external heating electrode 31 and the inner heating electrode 32 again. Finally, a cycle is formed when the next set of hanging frames 2 is placed in the graphitization furnace 1. In addition, the deposits that fall off during cleaning fall into the interior of the base 41 and are stored in the collection pipe 42 under the guidance of the guide slope 43. The collection pipe 42 can be removed and cleaned periodically.
[0050] In the description of this specification, references to terms such as "an embodiment," "example," and "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0051] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A high-temperature calcination graphitization furnace using a sagger, characterized in that: Includes a graphitization furnace (1) and a hanging rack (2); The center of the hanger (2) is a through hole, and the main body is a tray (21) arranged in layers. Hooks (22) are distributed around the bottom of the tray (21). The graphitization furnace (1) is provided with an outer ring of outer heating electrodes (31) and an inner ring of inner heating electrodes (32). The adjacent inner heating electrodes (32) of the inner ring are evenly distributed circumferentially and pass through the holes of the hanger (2). The graphitization furnace (1) is provided with a base (41) at the bottom, and an eccentric guide slope (43) is provided inside the base (41). A coaxial cleaning frame (51) is movably installed above the base (41). A covering cylinder (52) is fixedly installed on both the inner and outer sides of the cleaning frame (51) and is sleeved on the outer side of the inner heating electrode (32) and the outer heating electrode (31). Scrapers (53) are fixed at the upper and lower ends of the covering cylinder (52). The hook (22) moves downward to form a snap-fit under the cleaning rack (51).
2. The high-temperature calcination graphitization furnace in a sagger as described in claim 1, characterized in that: The graphitization furnace (1) has a support rod (321) distributed circumferentially in the central area, with the upper end connected to the plate at the upper end of the fixed internal heating electrode (32).
3. The high-temperature calcination graphitization furnace in a sagger as described in claim 1, characterized in that: The lower end of the guide slope (43) is provided with a positioning hole (45) with a lower opening, which is coaxial with the limiting hole (44) on the right side of the bottom of the graphitization furnace (1).
4. The high-temperature calcination graphitization furnace in a sagger as described in claim 3, characterized in that: A collection tube (42) is installed inside the limiting hole (44), with its upper end abutting against the junction of the limiting hole (44) and the positioning hole (45).
5. The high-temperature calcination graphitization furnace in a sagger as described in claim 1, characterized in that: The main body of the cleaning rack (51) consists of an outer ring frame (511) of the inner ring and an inner ring frame (512) of the outer ring, which are fixedly connected by a connecting rod.
6. The high-temperature calcination graphitization furnace in a sagger according to claim 5, characterized in that: The covering tube (52) is distributed on the inner side of the outer ring frame (511) and the outer side of the inner ring frame (512).
7. The high-temperature calcination graphitization furnace in a sagger according to claim 6, characterized in that: The lower end of the hook (22) has a protruding block (23) on the inner side, which has an upper oblique side and a lower oblique side, and the intersection of the two oblique sides is close to the inner edge of the inner ring frame (512).