Silicon carbide ceramic part for high-temperature heat treatment furnace

By employing a combination design of base, pulley, fixing ring, mounting box, and tie rod in the high-temperature heat treatment furnace, the thermal stress problem caused by the difference in thermal expansion coefficient of silicon carbide ceramic components was solved, achieving stability and strength of components at high temperatures, solving the cracking problem caused by thermal stress accumulation, and ensuring the normal operation of the high-temperature treatment furnace.

CN223710255UActive Publication Date: 2025-12-23HANGZHOU HERUI SEMICONDUCTOR TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202520222956.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-12
Publication Date
2025-12-23
Estimated Expiration
2035-02-12

AI Technical Summary

Technical Problem

The accumulation of thermal stress caused by the difference in the coefficient of thermal expansion in silicon carbide ceramic components during high-temperature processing furnaces leads to cracking and reduced strength.

Method used

The design employs a combination of components such as a base, pulleys, retaining rings, mounting box, pull rod, and return spring. By limiting and fixing these components, it avoids the accumulation of thermal stress caused by differences in the coefficients of thermal expansion, thus preventing the generation and propagation of cracks.

Benefits of technology

This effectively avoids cracks caused by differences in thermal expansion coefficients in silicon carbide ceramic components during high-temperature heating, improves the strength and integrity of the components, and ensures the normal operation of the high-temperature treatment furnace.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a silicon carbide ceramic component for a high-temperature heat treatment furnace, which belongs to the technical field of high-temperature heat treatment furnaces and comprises a shell fixedly connected to the top of a support frame, a base fixedly connected to the inner side wall of the shell, a pulley slidably connected to the top of the base, and a fixing ring fixedly connected to the top of the pulley. The inner side wall of the fixing ring is fixedly connected with a mounting box, the outer side wall of the mounting box is slidably connected with a pull rod, and the inner side wall of the mounting box is fixedly connected with a reset spring. According to the silicon carbide ceramic component for the high-temperature heat treatment furnace, through cooperative use of the base, the pulleys, the fixing ring, the mounting box, the pull rod and the reset spring, mounting and limiting of the silicon carbide ceramic component are facilitated, and therefore the situation that in the high-temperature heating process, the expansion coefficient of the silicon carbide ceramic component is different from that of a fixing part is avoided; therefore, large thermal stress is generated at the contact interface of the silicon carbide ceramic part and the fixed part, and generation and expansion of cracks are avoided.
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Description

TECHNICAL FIELD

[0001] The utility model belongs to high temperature heat treatment furnace technical field, specifically, relate to a high temperature heat treatment furnace is with silicon carbide ceramic part. BACKGROUND

[0002] High temperature treatment furnace is a kind of key equipment widely used in material processing, metallurgy, chemical industry and many other fields, in the composition of high temperature treatment furnace, silicon carbide ceramic has high hardness, high strength, high temperature resistance, corrosion resistance and good thermal conductivity and other advantages, make it become indispensable part in high temperature treatment furnace, such as commonly used in furnace lining, heating element support part, heat exchanger and other key parts;

[0003] But, because the thermal expansion coefficient of silicon carbide ceramic is relatively small, it is between other parts, especially between the fixed parts of silicon carbide ceramic, in the repeated heating and cooling process, the difference of the thermal expansion coefficient can cause larger thermal stress at the contact interface of silicon carbide ceramic part and other materials, this repeated asynchronous expansion and contraction make the thermal stress at the contact interface accumulate constantly, when thermal stress exceeds the bearing limit of silicon carbide ceramic part, crack will be initiated and extended, these cracks not only reduce the strength and integrity of silicon carbide ceramic part, make it more vulnerable to further damage, such as in the subsequent use process, crack can further extend under the action of thermal stress, mechanical stress and other factors, even possibly lead to the fracture of part, thereby seriously affect the normal operation of high temperature treatment furnace;

[0004] To solve the above problems, a kind of silicon carbide ceramic part for high temperature heat treatment furnace is provided in the present application. Utility model content

[0005] For the problems in the related art, the utility model provides a kind of silicon carbide ceramic part for high temperature heat treatment furnace to overcome the above technical problems existing in prior art.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A kind of silicon carbide ceramic part for high temperature heat treatment furnace, including support frame, the top of the support frame is provided with furnace body structure, the inside of the furnace body structure is provided with heating structure, the outside of the furnace body structure is provided with sealing structure;

[0008] The furnace body structure comprises an outer shell fixedly connected to the top of the support frame, an inner side wall of the outer shell is fixedly connected with a base, the top of the base is slidingly connected with a pulley, the top of the pulley is fixedly connected with a fixed ring, the inner side wall of the fixed ring is fixedly connected with a mounting box, the outer side wall of the mounting box is slidingly connected with a pull rod, the inner side wall of the mounting box is fixedly connected with a return spring, and one end of the return spring away from the inner side wall of the mounting box is fixedly connected with the outer side wall of the pull rod.

[0009] Preferably, the outer side wall of the mounting box is fixedly connected with a limiting block, the inner side wall of the limiting block is slidingly connected with a limiting ring, the outer side wall of the limiting ring is slidingly connected with a rotating block, one side of the limiting ring close to the rotating block is fixedly connected with a tension spring, one end of the tension spring away from the limiting ring is fixedly connected with the outer side wall of the rotating block, and the inner side wall of the pull rod is clamped with the outer side wall of the rotating block.

[0010] Preferably, the top of the base is provided with a clamping groove, the inner side wall of the clamping groove is matched with the outer side wall of the pulley, and the pulley is located in the clamping groove.

[0011] Preferably, the heating structure comprises a mounting frame fixedly connected to the inner side wall of the outer shell, the inner side wall of the mounting frame is fixedly connected with a positioning ring, and the inner side wall of the positioning ring is provided with a heating rod.

[0012] Preferably, the sealing structure comprises a positioning block fixedly connected to the outer side wall of the outer shell, and one end of the positioning block away from the outer shell is rotatably connected with a cover body.

[0013] Preferably, the center of the fixed ring coincides with the center of the mounting frame, and the center of the fixed ring coincides with the center of the mounting frame.

[0014] In summary, the technical effects and advantages of the high-temperature heat treatment furnace with the silicon carbide ceramic parts are as follows: the base, the pulley, the fixed ring, the mounting box, the pull rod and the return spring are used in cooperation, so that the silicon carbide ceramic parts are installed and limited, thereby avoiding the existence of differences between the expansion coefficient of the silicon carbide ceramic parts and the fixed parts during high-temperature heating, causing a large thermal stress at the contact interface between the silicon carbide ceramic parts and the fixed parts, and further avoiding the generation and expansion of cracks.

[0015] Through cooperation of the pull rod, the rotating block, the limiting ring, the tension spring and the limiting block, the pull rod is limited, the pull rod is prevented from being retracted into the installation box, and the silicon carbide ceramic part installed in the installation box is prevented from falling. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure schematic view of the utility model;

[0017] Figure 2 It is a structure schematic view of the utility model fixing ring and related parts;

[0018] Figure 3 It is a structure schematic view of the utility model installation box and related parts;

[0019] Figure 4 It is the utility model Figure 3 It is a structure schematic view of the utility model;

[0020] Figure 5 It is a structure schematic view of the utility model installation frame and related parts.

[0021] In the drawing:

[0022] 1, support frame;

[0023] 2, furnace body structure; 201, shell; 202, base; 203, clamping groove; 204, pulley; 205, fixing ring; 206, installation box; 207, pull rod; 208, reset spring; 209, rotating block; 210, limiting ring; 211, tension spring; 212, limiting block;

[0024] 3, heating structure; 301, installation frame; 302, positioning ring; 303, heating rod;

[0025] 4, sealing structure; 401, positioning block; 402, cover. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0027] Referring to Figures 1-3 A silicon carbide ceramic part for high-temperature heat treatment furnace, including support frame 1, the top of support frame 1 is provided with furnace body structure 2, the inside of furnace body structure 2 is provided with heating structure 3, the outside of furnace body structure 2 is provided with sealing structure 4;

[0028] The furnace body structure 2 comprises an outer shell 201 fixedly connected to the top of the support frame 1, the inner side wall of the outer shell 201 is fixedly connected with a base 202, the base 202 is provided with two, the two bases 202 are distributed in the axial symmetry of the outer shell 201, the top of the two bases 202 is slidably connected with a pulley 204, the pulley 204 is provided with six, the six pulleys 204 are grouped into two, the top of the three groups of pulleys 204 is fixedly connected with a fixed ring 205, the inner side wall of the three fixed rings 205 is fixedly connected with a mounting box 206, the mounting box 206 is provided with a plurality of, the plurality of mounting boxes 206 are distributed in the circumferential array on the inner side wall of the three fixed rings 205, taking one of the mounting boxes 206 as an example, the outer side wall of the mounting box 206 is slidably connected with a pull rod 207, one end of the pull rod 207 is provided with a clamping groove 203, the inner side wall of the mounting box 206 is fixedly connected with a reset spring 208, the reset spring 208 is wound on the outside of the pull rod 207, the end of the reset spring 208 away from the inner side wall of the mounting box 206 is fixedly connected with the outer side wall of the pull rod 207, and the pull rod 207 and the reset spring 208 are arranged on all the mounting boxes 206;

[0029] In use, the pull rod 207 is pulled towards the side of the mounting box 206, at this time, the movement of the pull rod 207 will extrude the reset spring 208, and the block of the pull rod 207 to the mounting box 206 is removed, the operator can insert the silicon carbide ceramic part into the inside of the mounting box 206, the silicon carbide ceramic part is limited by the mounting box 206, at this time, the pull rod 207 is loosened, under the action of the reset spring 208, one end of the pull rod 207 extends to the outside of the mounting box 206 through the mounting box 206, the silicon carbide ceramic part in the mounting box 206 is limited, so that the thermal expansion coefficient difference between the silicon carbide ceramic part and the fixed part during heating is avoided, and the connection point fracture is avoided, and the strength and integrity of the silicon carbide ceramic part are avoided.

[0030] Referring to Figure 3 and Figure 4 Taking one of the mounting boxes 206 as an example, the outer side wall of the mounting box 206 is fixedly connected with a limiting block 212, the inner side wall of the limiting block 212 is slidably connected with a limiting ring 210, the outer side wall of the limiting ring 210 is slidably connected with a rotating block 209, the outer wall of the end of the rotating block 209 away from the limiting ring 210 is provided with a ball, the rotating block 209 and the limiting ring 210 can be extended, the side of the limiting ring 210 close to the rotating block 209 is fixedly connected with a pull spring 211, the end of the pull spring 211 away from the limiting ring 210 is fixedly connected with the outer side wall of the rotating block 209, the inner side wall of the pull rod 207 is clamped with the outer side wall of the rotating block 209;

[0031] In use, when the pull rod 207 blocks the installation box 206, pull the rotating block 209, so that the rotating block 209 extends to the end of the pull rod 207, because the pull rod 207 is close to the end of the rotating block 209 is provided with a card slot 203, and the outer wall of the rotating block 209 is provided with a ball, when the rotating block 209 is inserted into the card slot 203 of the pull rod 207, the pull rod 207 is clamped by the ball, so as to limit the pull rod 207, avoid the pull rod 207 back to the inside of the installation box 206 in the process of use, and avoid the silicon carbide ceramic parts in the installation box 206 from falling in the process of use.

[0032] With reference to Figure 3 , the top of the two bases 202 is provided with a clamping groove 203, and the inner side walls of the two clamping grooves 203 are respectively matched with the outer side walls of the six pulleys 204, and the six pulleys 204 are respectively located in the inside of the clamping grooves 203.

[0033] With reference to Figure 1 and Figure 5 , the heating structure 3 comprises a mounting frame 301 fixedly connected to the inner side wall of the shell 201, the mounting frame 301 is provided with three, the positions of the three mounting frames 301 respectively correspond to the positions of the three fixed rings 205, and the inner side walls of the three mounting frames 301 are respectively fixedly connected with a positioning ring 302, the inner side wall of the positioning ring 302 is provided with a heating rod 303, and the heating rod 303 is connected with an external power supply.

[0034] With reference to Figure 5 , the sealing structure 4 comprises a positioning block 401 fixedly connected to the outer side wall of the shell 201, and the positioning block 401 is rotatably connected with a cover 402 away from the shell 201.

[0035] With reference to Figure 1 , the center of the fixed ring 205 coincides with the center of the mounting frame 301, and the concentric design makes the heating structure 3 can be evenly distributed around the silicon carbide ceramic parts, improve the heat conduction efficiency, the heat can be more directly from the heating structure 3 to the ceramic parts, reduce the loss of heat in the process of transmission, at the same time can ensure that the heat is transmitted to the ceramic parts from all directions with relatively consistent distance, avoid the situation of local overheating or overcooling.

[0036] Working principle: in the process of using, pull the pull rod 207 to one side of the installation box 206, at this time, the movement of the pull rod 207 will extrude the reset spring 208, and remove the pull rod 207 to the installation box 206, the operator can insert the silicon carbide ceramic parts into the inside of the installation box 206, the silicon carbide ceramic parts are limited by the installation box 206, at this time, release the pull rod 207, under the action of the reset spring 208, one end of the pull rod 207 extends to the outside of the installation box 206 through the installation box 206, the silicon carbide ceramic parts in the installation box 206 are limited, so as to avoid the different thermal expansion coefficients between the silicon carbide ceramic parts and the fixed parts during the heating process, which leads to the fracture of the connecting point, thereby avoiding reducing the strength and integrity of the silicon carbide ceramic parts, when the pull rod 207 is sealed to the installation box 206, pull the rotating block 209, so that the rotating block 209 extends to the end of the pull rod 207, because the end of the pull rod 207 close to the rotating block 209 is provided with the clamping groove 203, and the outer wall of the rotating block 209 is provided with the ball, when the rotating block 209 is inserted into the clamping groove 203 of the pull rod 207, the pull rod 207 is clamped through the ball, so as to limit the pull rod 207, avoid the pull rod 207 to retract into the inside of the installation box 206 during use, thereby avoiding the silicon carbide ceramic parts in the installation box 206 falling during use.

[0037] The above only describes the preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A silicon carbide ceramic component for a high-temperature heat treatment furnace, comprising a support frame (1), characterized in that, The top of the support frame (1) is provided with a furnace body structure (2), the inside of the furnace body structure (2) is provided with a heating structure (3), and the outside of the furnace body structure (2) is provided with a sealing structure (4). The furnace body structure (2) comprises an outer shell (201) fixedly connected to the top of the support frame (1), an inner side wall of the outer shell (201) is fixedly connected with a base (202), the top of the base (202) is slidingly connected with a pulley (204), the top of the pulley (204) is fixedly connected with a fixed ring (205), the inner side wall of the fixed ring (205) is fixedly connected with a mounting box (206), the outer side wall of the mounting box (206) is slidingly connected with a pull rod (207), the inner side wall of the mounting box (206) is fixedly connected with a reset spring (208), and one end of the reset spring (208) away from the inner side wall of the mounting box (206) is fixedly connected with the outer side wall of the pull rod (207).

2. The silicon carbide ceramic part for a high-temperature heat treatment furnace according to claim 1, characterized by The outer side wall of the mounting box (206) is fixedly connected with a limiting block (212), the inner side wall of the limiting block (212) is slidingly connected with a limiting ring (210), the outer side wall of the limiting ring (210) is slidingly connected with a rotating block (209), one side of the limiting ring (210) close to the rotating block (209) is fixedly connected with a tension spring (211), one end of the tension spring (211) away from the limiting ring (210) is fixedly connected with the outer side wall of the rotating block (209), and the inner side wall of the pull rod (207) is clamped with the outer side wall of the rotating block (209).

3. The silicon carbide ceramic part for a high-temperature heat treatment furnace according to claim 1, characterized by The top of the base (202) is provided with a clamping groove (203), the inner side wall of the clamping groove (203) is matched with the outer side wall of the pulley (204), and the pulley (204) is located in the inside of the clamping groove (203).

4. The silicon carbide ceramic part for a high-temperature heat treatment furnace according to claim 1, characterized by The heating structure (3) comprises a mounting frame (301) fixedly connected to the inner side wall of the outer shell (201), the inner side wall of the mounting frame (301) is fixedly connected with a positioning ring (302), and the inner side wall of the positioning ring (302) is provided with a heating rod (303).

5. The silicon carbide ceramic member for a high-temperature heat treatment furnace according to claim 1, characterized by The sealing structure (4) comprises a positioning block (401) fixedly connected to the outer side wall of the outer shell (201), and one end of the positioning block (401) away from the outer shell (201) is rotatably connected with a cover body (402).

6. The silicon carbide ceramic part for a high-temperature heat treatment furnace according to claim 4, characterized by The center of the fixed ring (205) coincides with the center of the mounting frame (301).