Electrode support of degumming and sintering integrated furnace heating body

Abstract

The utility model relates to an electrode support of a degumming and sintering integrated furnace heating body, which comprises electrode supports, a heating body, a furnace pipe, a furnace body and a thermal insulation layer, the heating body is positioned in the center of the furnace body and is connected with the three electrode supports in three directions through threads, the electrode supports penetrate through the furnace pipe and the thermal insulation layer to be connected with the furnace body, and the heating body is fixedly supported in the center of the furnace body. The electrode and the insulation support of the degumming and sintering integrated furnace are integrally arranged, contact between the heating body and the insulation support is omitted, heat loss of the heating body is reduced, the temperature in the furnace is improved, in addition, the electrode support is arranged in the middle of the heating body, and the temperature is more uniform.

Description

Technical Field

[0001] This utility model relates to the field of degumming and sintering integrated furnaces, and in particular to an electrode support for the heating element of a degumming and sintering integrated furnace. Background Technology

[0002] The debinding and sintering integrated furnace is a high-temperature processing device specifically designed for powder forming products such as ceramics and cemented carbide. It can complete both debinding and sintering processes within the same furnace. This equipment typically features high temperature control precision and uniformity, ensuring material quality during both debinding and sintering processes. The heating element is connected to electrodes for heating, but it requires support within the furnace. Existing sintering furnaces use separate electrode and support designs, leading to heat loss through convection, increased energy consumption, and a drop in furnace operating temperature. Furthermore, the separate contact of the heating element with the electrodes and support results in uneven heating. Therefore, the sintering furnace design must incorporate an electrode support to prevent current from flowing through the heating element and its support structure to the furnace body, while simultaneously providing structural support. A search revealed no identical technical solutions to this invention; only some relevant comparative technical documents were found, including the following:

[0003] 1. Patent application number 202223033341.8 discloses an insulating support structure for a vertical sintering furnace heating element, including a supporting electrode and a support column for supporting the vertical heating element. The supporting electrode and the support column are located at the bottom of each section of the vertical heating element. One end of the supporting electrode is connected to the power inlet frame, and the other end is connected to a copper electrode fixed to the side wall of the furnace body. Insulating bushings are fitted around both the supporting electrode and the copper electrode, insulating them from the furnace body. A connecting seat is detachably connected to the lower connecting frame. One end of the support column is connected to the connecting seat, and the other end is connected to the side wall of the furnace body. The support column is insulated from the vertical heating element. This invention supports the vertical heating element with a supporting electrode that is connected to a copper electrode for power supply. However, the support structure still does not include the copper electrode, so heat inside the furnace body still dissipates outward through convection, increasing energy consumption and causing a drop in the furnace operating temperature.

[0004] 2. Patent application number 202121292813.4 discloses a heating element structure for an integrated degreasing and sintering furnace, including a first electrode, a second electrode, a third electrode, a fourth motor, a fifth electrode, and a sixth electrode. Each of the first, second, third, fourth, fifth, and sixth electrodes is composed of conductive pillars and a support frame. Multiple heating rods are evenly distributed on the support frame, and each heating rod is electrically connected to its corresponding conductive pillar. Busbars are located at both ends of each heating rod, and a fixing ring is provided at the connection point between the heating rod and the busbar. A insertion hole is provided at one end of each conductive pillar. This invention uses six electrodes to connect twenty-four heating rods in series, forming two independently operating heating zones, thus meeting the requirement for uniform temperature within the furnace. However, the use of conductive pillars and a support frame still requires two components, and there will still be a temperature loss during the furnace operation process.

[0005] 3. Patent application number 202221241143.8 discloses a heating element structure for a sintering furnace. This structure includes a bottom heating zone and a side heating zone above the bottom heating zone. The bottom heating zone includes several lower heating rods connected in series and parallel. One end of each lower heating rod is connected to an input electrode that supplies power to the bottom heating zone. The other end of each lower heating rod, relative to the input electrode, is provided with a non-input support electrode that supports the bottom heating zone. The lower heating rods are energized through the input electrode, and the current forms a series and parallel current loop within the lower heating rods. The side heating zone has several side heating rods connected in parallel. This invention features independently operating bottom and side heating zones, and the heating power of each zone can be controlled by adjusting the voltage, thereby achieving uniform temperature within the furnace. However, this patent does not solve the problem of heat loss from the furnace due to the separate design of the electrodes and supports.

[0006] Analysis of the aforementioned patents reveals that current degumming and sintering integrated furnaces do not address the technical issues of temperature drop and uneven heating element temperature by designing a motor combination that simultaneously provides electrical conductivity and support. Therefore, the aforementioned problems persist, making improvements necessary. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide an electrode support for the heating element of an integrated degumming and sintering furnace, which effectively solves the technical problems of heat loss of the heating element, decrease in the operating temperature of the sintering furnace, and uneven temperature inside the furnace caused by the separate design of the electrode and the support.

[0008] The technical solution proposed by this utility model is: an electrode support for the heating element of a degumming sintering integrated furnace, including an electrode support, a heating element, a furnace liner, a furnace body and a heat insulation layer. The heating element is located at the center of the furnace body and is connected to 2-4 electrode supports in 2-4 directions by threads. The electrode supports pass through the furnace liner and the heat insulation layer and are connected to the furnace body to fix and support the heating element at the center of the furnace body.

[0009] The electrode support includes a copper electrode, a graphite electrode, a copper electrode sleeve, a graphite electrode sleeve, and an electrode water-cooling jacket. The copper electrode and the graphite electrode are connected by threads. The copper electrode is covered by a copper electrode sleeve, and there is air insulation between the copper electrode and the copper electrode sleeve. The graphite electrode is covered by a graphite electrode sleeve, and there is air insulation between the graphite electrode sleeve and the graphite electrode. The copper electrode portion is outside the furnace body. The copper electrode is connected to an electrode water-cooling jacket in both the vertical and side directions. The graphite electrode has threads on the side where it connects to the heating element.

[0010] Furthermore, the threaded portion at the lower end of the graphite electrode is a cylinder with a radius smaller than that of the upper portion, and has the same diameter as the hole on the connecting portion in the middle of the heating element.

[0011] Furthermore, the copper electrode sleeve and the graphite electrode sleeve are cylindrical, with the diameter of the copper electrode sleeve being larger than that of the copper electrode and the diameter of the graphite electrode sleeve being larger than that of the graphite electrode.

[0012] The electrode water-cooling jacket is a circular tube with the same inner diameter as the copper electrode and is connected to the copper electrode by threads.

[0013] Furthermore, an insulating element is provided above the copper electrode sleeve. The insulating element is circular and located outside the furnace body.

[0014] Furthermore, a pressure plate flange and a locking nut are provided above the insulating component, with the pressure plate flange located on the outermost side and the locking nut located on the inner side of the pressure plate flange.

[0015] Furthermore, an electrode clamp is provided above the locking nut, which clamps the insulating shell on the outside of the copper electrode.

[0016] Furthermore, a boron nitride insulating plug is provided at the upper end of the graphite electrode and the graphite electrode sleeve.

[0017] Furthermore, the portion of the copper electrode outside the furnace body is fitted with an insulating outer shell.

[0018] The beneficial effects of this utility model are: by integrating the electrodes and insulating supports of the degumming and sintering furnace, the contact between the heating element and the insulating support is eliminated, heat loss from the heating element is reduced, and the furnace temperature is increased. In addition, the electrode support is arranged in the middle of the heating element, resulting in a more uniform temperature. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the degumming and sintering integrated furnace provided in this embodiment of the utility model.

[0020] Figure 2 This is a schematic diagram of the electrode support structure of the degumming and sintering integrated furnace provided in this embodiment of the utility model.

[0021] Figure 3 A schematic diagram of the heating element of the degumming and sintering integrated furnace provided in this embodiment of the present invention.

[0022] Explanation of reference numerals in the attached drawings: 1. Electrode support; 2. Heating element; 3. Furnace liner; 4. Furnace body and insulation layer; 5. Electrode water cooling jacket; 6. Insulating shell; 7. Electrode clamp; 8. Locking nut; 9. Pressure plate flange; 10. Insulating component; 11. Copper electrode sleeve; 12. Copper electrode; 13. Boron nitride insulating plug; 14. Graphite electrode; 15. Graphite electrode sleeve; 16. Detailed Implementation

[0023] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this utility model. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0024] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0025] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0026] like Figures 1-2 As shown, the technical solution proposed by this utility model is: an electrode support for the heating element of a degumming sintering integrated furnace, including an electrode support 1, a heating element 2, a furnace liner 3, a furnace body 4, and a heat insulation layer 5. The heating element 2 is located at the center of the furnace body 4 and is connected to multiple electrode supports 1 in three directions by threads. In this embodiment, there are three electrode supports 1, but there can also be 2-4 electrode supports 1 depending on the needs of the heating element. The electrode supports 1 pass through the furnace liner 3 and the heat insulation layer 5 and are connected to the furnace body 4 to fix and support the heating element 2 at the center of the furnace body 4.

[0027] The electrode support 1 includes a copper electrode 13, a graphite electrode 15, a copper electrode sleeve 12, a graphite electrode sleeve 16, and an electrode water-cooling sleeve 6. The copper electrode 13 and the graphite electrode 15 are connected by threads. The copper electrode 13 is covered by the copper electrode sleeve 12, and there is air insulation between the copper electrode 13 and the copper electrode sleeve 12. The graphite electrode 15 is covered by the graphite electrode sleeve 16, and there is air insulation between the graphite electrode sleeve 16 and the graphite electrode 15. The copper electrode 13 is partially outside the furnace body 4. The copper electrode 13 is connected to an electrode water-cooling sleeve 6 in both the vertical and side directions. The graphite electrode 15 has threads on one side of its connection to the heating element 2.

[0028] Furthermore, the threaded portion at the lower end of the graphite electrode 15 is a cylinder with a radius smaller than that of the upper portion, and has the same diameter as the hole on the connecting portion in the middle of the heating element 2.

[0029] Furthermore, the copper electrode sleeve 12 and the graphite electrode sleeve 16 are cylindrical, with the diameter of the copper electrode sleeve 12 being larger than that of the copper electrode 13, and the diameter of the graphite electrode sleeve 16 being larger than that of the graphite electrode 15.

[0030] The electrode water-cooling jacket 6 is a round tube with the same inner diameter as the copper electrode 13, and is connected to the copper electrode 13 by a thread.

[0031] Furthermore, an insulating element 11 is provided above the copper electrode sleeve 12. The insulating element 11 is circular and located outside the furnace body 4.

[0032] Furthermore, a pressure plate flange 10 and a locking nut 9 are provided above the insulating component 11, with the pressure plate flange 10 located on the outermost side and the locking nut 9 located on the inner side of the pressure plate flange 10.

[0033] Furthermore, an electrode clamp 8 is provided above the locking nut 9, which clamps the insulating shell on the outside of the copper electrode.

[0034] Furthermore, a boron nitride insulating plug 14 is provided at the upper end of the graphite electrode 15 and the graphite electrode sleeve 16.

[0035] Furthermore, the portion of the copper electrode 13 outside the furnace body 4 is covered with an insulating outer shell 7.

[0036] In this embodiment, the process is as follows: the three electrode supports 1 contact the heating element 2 in three directions, forming a heat-conducting circuit inside the heating element 2. This heat-conducting circuit only contacts the electrode supports 1 and does not require insulating supports to fix it to the center of the furnace body 4.

[0037] The beneficial effects of this utility model are: the electrodes and insulating supports of the degumming sintering integrated furnace are arranged in an integrated manner, eliminating the contact between the heating element 2 and the insulating support, reducing the heat loss of the heating element 2, and increasing the temperature inside the furnace. In addition, the electrode support 1 is arranged in the middle of the heating element, resulting in a more uniform temperature.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An electrode support for the heating element of an integrated degumming and sintering furnace, characterized in that: It includes an electrode support (1), a heating element (2), a furnace liner (3), a furnace body (4), and an insulation layer (5). The heating element (2) is located at the center of the furnace body (4) and is connected to the three electrode supports (1) in three directions by threads. The electrode supports (1) pass through the furnace liner (3) and the insulation layer (5) and are connected to the furnace body (4) to fix the heating element (2) at the center of the furnace body (4). The electrode support (1) includes a copper electrode (13), a graphite electrode (15), a copper electrode sleeve (12), a graphite electrode sleeve (16), and an electrode water-cooling sleeve (6). The copper electrode (13) and the graphite electrode (15) are connected by threads. The copper electrode (13) is covered by a copper electrode sleeve (12), and there is air insulation between the copper electrode (13) and the copper electrode sleeve (12). The graphite electrode (15) is covered by a graphite electrode sleeve (16), and there is air insulation between the graphite electrode sleeve (16) and the graphite electrode (15). The copper electrode (13) is partially outside the furnace body (4). The copper electrode (13) is connected to an electrode water-cooling sleeve (6) in both the vertical and vertical directions. The graphite electrode (15) is connected to the heating element (2) at one end with threads on its side.

2. The electrode support for the heating element of the degumming sintering integrated furnace according to claim 1, characterized in that: The lower threaded part of the graphite electrode (15) is a cylinder with a radius smaller than that of the upper part, and has the same diameter as the hole on the middle connecting part of the heating element (2).

3. The electrode support for the heating element of the degumming sintering integrated furnace according to claim 1, characterized in that: The copper electrode sleeve (12) and the graphite electrode sleeve (16) are cylindrical, with the diameter of the copper electrode sleeve (12) being larger than that of the copper electrode (13) and the diameter of the graphite electrode sleeve (16) being larger than that of the graphite electrode (15).

4. The electrode support for the heating element of the degumming sintering integrated furnace according to claim 1, characterized in that: The electrode water-cooling jacket (6) is a round tube with the same inner diameter as the copper electrode (13) and is connected to the copper electrode (13) by a thread.

5. The electrode support for the heating element of the degumming sintering integrated furnace according to claim 1, characterized in that: An insulating component (11) is provided above the copper electrode sleeve (12). The insulating component (11) is circular and located outside the furnace body (4).

6. The electrode support for the heating element of the degumming sintering integrated furnace according to claim 5, characterized in that: A pressure plate flange (10) and a locking nut (9) are provided above the insulating component (11). The pressure plate flange (10) is located on the outermost side, and the locking nut (9) is located on the inner side of the pressure plate flange (10).

7. The electrode support for the heating element of the degumming sintering integrated furnace according to claim 6, characterized in that: An electrode clamp (8) is provided above the locking nut (9), and the electrode clamp (8) clamps the insulating shell on the outside of the copper electrode (13).

8. The electrode support for the heating element of the degumming sintering integrated furnace according to claim 1, characterized in that: The upper ends of the graphite electrode (15) and the graphite electrode sleeve (16) are provided with boron nitride insulating plugs (14).

9. The electrode support for the heating element of the degumming sintering integrated furnace according to claim 1, characterized in that: The copper electrode (13) outside the furnace body (4) is covered with an insulating shell (7).

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