A supporting device for large-size cylindrical honeycomb ceramics
Patent Information
- Application Number
- CN202522306442.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-31
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-10-31
AI Technical Summary
[0004]基于此，本实用新型的目的是提供一种大规格柱状蜂窝陶瓷的承烧装置，用于解决现有技术中吊烧长径比和自重较大的大规格柱状陶瓷制品，烧成合格率低的技术问题
[0006]上述大规格柱状蜂窝陶瓷的承烧装置，通过设置承托主体用于承托柱状蜂窝陶瓷制品，满足大规格柱状蜂窝陶瓷制品的立式或倾斜式高温烧成的需求；进一步地，柱状蜂窝陶瓷制品制品烧成过程中可以利用自身重力克服与承烧装置间的接触摩擦力，尽可能保证烧成收缩时，柱状蜂窝陶瓷制品表面应力一致，进而减少制品变形和开裂；再者，设置在承托槽和挡板上的贯穿式排气孔，一方面能进一步降低柱状蜂窝陶瓷制品与承烧装置间的摩擦力，减少收缩应力不一致引起的柱状蜂窝陶瓷制品变形和开裂现象；另一方面有助于及时排出柱状蜂窝陶瓷制品烧成过程中产生的气体，减少表面起泡、颜色差异等烧成缺陷。进而提供了一种针对立式烧成的特点专用的配套承烧装置，解决了现有技术中吊烧长径比和自重较大的大规格柱状陶瓷制品，烧成合格率低的技术问题。
Smart Images
Figure CN224787676U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ceramic firing technology, and in particular to a firing device for large-format columnar honeycomb ceramics. Background Technology
[0002] The production of honeycomb products involves extrusion molding, drying, and high-temperature firing. Large-sized, especially columnar ceramic products with a high aspect ratio, are prone to bending and deformation during high-temperature firing. For ceramic products with relatively low self-weight, a hanging firing method can be used. This involves making one or more holes at one end of the ceramic blank, inserting high-strength pins such as SiC or Si3N4 through the holes, and then placing the blank on a SiC or Si3N4 beam for firing. However, with this firing method, the ceramic products are also prone to cracking or even breaking due to their own weight, resulting in a low firing yield. In addition, the hanging firing process is complex, has low kiln loading and unloading efficiency, requires high-quality firing materials, and exhibits poor stability of the products within the kiln. Most importantly, large-sized and heavy columnar ceramic products cannot be fired using the hanging firing process.
[0003] For large-format columnar ceramic products with high aspect ratios and weight, vertical or inclined firing is a more scientific and reasonable method. On the one hand, vertical or inclined firing places lower demands on the firing material and simplifies the firing process; on the other hand, it overcomes the contact friction between the product and the firing plate during horizontal firing, preventing deformation and cracking caused by inconsistent surface stress during firing shrinkage. Designing a dedicated firing device specifically for vertical firing is key to solving the firing problems of large-format columnar ceramic products and improving the product's firing pass rate and quality. Utility Model Content
[0004] Based on this, the purpose of this utility model is to provide a firing device for large-size columnar honeycomb ceramics, which solves the technical problem of low firing qualification rate of large-size columnar ceramic products with large aspect ratio and self-weight in the prior art.
[0005] This utility model provides a firing device for large-format columnar honeycomb ceramics, comprising: The support body and the baffle provided in the support body, the baffle abutting against the support body, the support body is provided with a support groove for supporting columnar honeycomb ceramic products, at least one end of the support groove is provided with the baffle to limit the columnar honeycomb ceramic, the support body and the baffle are respectively provided with a plurality of vent holes, the vent holes are connected to the support groove.
[0006] The aforementioned firing device for large-format columnar honeycomb ceramics, by setting up a support body to support the columnar honeycomb ceramic products, meets the requirements for vertical or inclined high-temperature firing of large-format columnar honeycomb ceramic products. Furthermore, during the firing process, the columnar honeycomb ceramic products can utilize their own weight to overcome the contact friction between themselves and the firing device, ensuring consistent surface stress during firing shrinkage, thereby reducing product deformation and cracking. Moreover, the through-hole vents in the support groove and baffle further reduce friction between the columnar honeycomb ceramic products and the firing device, minimizing deformation and cracking caused by inconsistent shrinkage stress. They also facilitate the timely removal of gases generated during firing, reducing firing defects such as surface blistering and color differences. This provides a dedicated firing device for vertical firing, solving the technical problem of low firing pass rates in existing technologies for large-format columnar ceramic products with high aspect ratios and weight.
[0007] In addition, the firing device for large-format columnar honeycomb ceramics according to the present invention may also have the following additional technical features: Furthermore, the supporting body includes a bottom and inclined portions on both sides of the bottom. The two inclined portions are smoothly connected to the bottom to form the supporting groove. A support structure is provided on the side of the bottom away from the supporting groove. The support structure is a boss structure.
[0008] Furthermore, the cross-section of the supporting body is a ring, the inside of the ring forms the supporting groove, and a support structure is provided on the side of the ring away from the supporting groove, the support structure being a support plane.
[0009] Furthermore, the cross-section of the supporting body is a ring, the inside of the ring forms the supporting groove, and a support structure is provided on the side of the ring away from the supporting groove, the support structure being a boss structure.
[0010] Furthermore, the baffle includes a baffle body and inclined splits disposed on both sides of the baffle body, the baffle body abutting against the bottom, and the inclined splits abutting against the inclined portion.
[0011] Furthermore, the cross-section of the baffle is a ring, and the baffle and the supporting body are concentric rings.
[0012] Furthermore, the cross-section of the baffle is semi-circular, and the baffle and the supporting body are concentric rings.
[0013] Furthermore, the two ends of the baffle are flush with the two ends of the supporting body.
[0014] Furthermore, the cross-section of the support groove is polygonal or arc-shaped. Attached Figure Description
[0015] Figure 1 This is a cross-sectional view of the firing device in the first embodiment of this utility model; Figure 2 This is a top view of the firing device in the first embodiment of this utility model; Figure 3 for Figure 2 Schematic diagram of section AA; Figure 4 This is a cross-sectional view of the firing device in the second embodiment of this utility model; Figure 5 This is a cross-sectional view of the firing device in the third embodiment of this utility model; Explanation of key component symbols:
[0016] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation
[0017] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.
[0018] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.
[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0020] To address the technical problem of low firing pass rates in existing technologies for large-sized columnar ceramic products with high aspect ratios and weight, this utility model provides a firing device for large-sized columnar honeycomb ceramics. Specifically, a support body is set up to support the columnar honeycomb ceramic products, meeting the requirements for vertical or inclined high-temperature firing of large-sized columnar honeycomb ceramic products. Furthermore, during the firing process, the columnar honeycomb ceramic products can use their own weight to overcome the contact friction between the products and the firing device, ensuring consistent surface stress during firing shrinkage and reducing product deformation and cracking. Moreover, the through-hole vents in the support groove and baffle further reduce the friction between the columnar honeycomb ceramic products and the firing device, reducing deformation and cracking caused by inconsistent shrinkage stress. They also help to promptly discharge gases generated during firing, reducing firing defects such as surface blistering and color differences. Furthermore, a special matching firing device for vertical firing is provided, which solves the technical problem of low firing qualification rate of large-sized columnar ceramic products with large length-to-diameter ratio and large self-weight in the existing technology.
[0021] To facilitate understanding of this utility model, several embodiments are provided below. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.
[0022] Example 1 Please see Figures 1-3 The image shows a firing device 1 for large-format columnar honeycomb ceramics according to the first embodiment of this utility model. It includes a supporting body 11 and a baffle 12 disposed within the supporting body 11. The baffle 12 abuts against and connects to the supporting body 11. The supporting body 11 has a supporting groove, and the baffle 12 is perpendicularly arranged to the supporting groove. The supporting groove supports the columnar honeycomb ceramic product 2. At least one end of the supporting groove is provided with the baffle 12 to limit the columnar honeycomb ceramic product 2, for positioning and preventing slippage. The supporting body 11 and the baffle 12 are respectively provided with a plurality of vent holes 13, which communicate with the supporting groove. The vent holes 13 are through holes, and their shapes include circular, elliptical, or polygonal, with a diameter of 2mm to 20mm and a spacing of 10mm to 100mm. Preferably, the vent holes 13 are circular through holes with a diameter of 2mm to 10mm and a spacing of 10mm to 100mm. In this embodiment, through-holes 13 with a diameter of 10 mm and a hole spacing of 20 mm are provided on the support groove and the baffle 12. The through-holes 13 help to release the gas generated by the product during the drying and firing process in a timely manner, ensure the uniform shrinkage of the contact surface between the product and the support groove, and reduce firing defects.
[0023] In this embodiment, a baffle 12 is disposed at one end of the support groove for fixing the columnar honeycomb ceramic product 2 during vertical or inclined drying and firing. The thickness of the baffle 12 is 5mm to 20mm. In this embodiment, the baffle 12 is 5mm thick and 15mm wide.
[0024] As a specific example, the supporting body 11 includes a bottom and inclined portions on both sides of the bottom. The two inclined portions are smoothly connected to the bottom to form a supporting groove. A support structure 14 is provided on the side of the bottom away from the supporting groove. The support structure 14 is a boss structure. The length of the planar boss is equal to the length of the arc-shaped supporting body 11. The width of the boss structure is 10mm to 100mm, and the height is 3mm to 50mm. The bottom end of the boss structure is a plane, and the length of the plane is equal to the length of the supporting groove. In this embodiment, the boss is 50mm wide and 8mm high. Further, the baffle 12 includes a baffle 12 body and inclined splits on both sides of the baffle 12 body. The baffle 12 body abuts against the bottom, and the inclined splits abut against the inclined portions. In order to improve the limiting effect of the baffle 12, as well as to improve aesthetics, ease of operation, and safety, in this embodiment, the two ends of the baffle 12 are flush with the two ends of the supporting body 11.
[0025] The cross-section of the support groove is polygonal or arc-shaped. Furthermore, the concave surface of the support groove matches the outer surface of the columnar honeycomb ceramic product 2 to be fired, with a thickness of 5mm to 20mm and a length of 200mm to 3000mm. In this embodiment, the support groove is 800mm long and 8mm thick.
[0026] The support groove and baffle 12 are made of one or more of the following materials: mullite, alumina, silicon carbide, silicon nitride, and boron nitride.
[0027] The firing device 1 for columnar honeycomb ceramics in this embodiment meets the requirements for vertical or inclined high-temperature firing of large-size columnar honeycomb ceramics. The firing process is simple and the requirements for the firing material are not high. During the firing process, the columnar honeycomb ceramic product 2 can overcome the contact friction between itself and the firing device 1 by its own weight, so as to ensure that the surface stress of the columnar honeycomb ceramic product 2 is consistent during firing shrinkage, thereby reducing the deformation and cracking of the columnar honeycomb ceramic product 2.
[0028] Secondly, the through-hole vent 13 set on the support groove and baffle 12 can, on the one hand, further reduce the friction between the columnar honeycomb ceramic product 2 and the firing device 1, and reduce the deformation and cracking of the columnar honeycomb ceramic product 2 caused by inconsistent shrinkage stress; on the other hand, it helps to timely discharge the gas generated during the firing process of the columnar honeycomb ceramic product 2, and reduce firing defects such as surface blistering and color difference.
[0029] In summary, the large-format columnar honeycomb ceramic firing device in the above embodiments of this utility model, by setting up a support body to support the columnar honeycomb ceramic products, meets the requirements of vertical or inclined high-temperature firing of large-format columnar honeycomb ceramic products. Furthermore, during the firing process, the columnar honeycomb ceramic products can utilize their own weight to overcome the contact friction between themselves and the firing device, ensuring consistent surface stress during firing shrinkage, thereby reducing product deformation and cracking. Moreover, the through-hole vents in the support groove and baffle further reduce friction between the columnar honeycomb ceramic products and the firing device, reducing deformation and cracking caused by inconsistent shrinkage stress. They also help to promptly discharge gases generated during firing, reducing firing defects such as surface blistering and color differences. Therefore, this invention provides a dedicated firing device for vertical firing, solving the technical problem of low firing pass rate in existing technologies for large-format columnar ceramic products with large aspect ratios and high weight. Example 2 Please refer to Figure 4 The image shows a firing device for large-size columnar honeycomb ceramics in the second embodiment of this utility model. The difference between the firing device for large-size columnar honeycomb ceramics in this embodiment and the firing device for large-size columnar honeycomb ceramics in the first embodiment is as follows: The supporting body 11 has a circular cross-section, with a supporting groove formed inside the ring. A supporting structure 14 is provided on the side of the ring away from the supporting groove. The supporting structure 14 is a supporting plane with a width of 10mm to 100mm; in this embodiment, the plane width is 40mm. The baffle 12 has a circular cross-section, and the baffle 12 and the supporting body 11 are concentric rings. In this embodiment, the annular baffle 12 has a thickness of 10mm and a ring width of 20mm.
[0030] In this embodiment, the support groove is 1000mm long and 15mm thick. In this embodiment, through-holes 13 with a diameter of 5mm and a hole spacing of 20mm are opened on the support groove and the annular baffle 12. The through-holes 13 help to timely discharge the gas generated by the product during the drying and firing process, ensure the uniform shrinkage of the contact surface between the product and the firing plate, and reduce firing defects.
[0031] Example 3 Please refer to Figure 5 The image shows a firing device for large-size columnar honeycomb ceramics in the third embodiment of this utility model. The difference between the firing device for large-size columnar honeycomb ceramics in this embodiment and the firing device for large-size columnar honeycomb ceramics in the first embodiment is as follows: The supporting body 11 has a circular cross-section, with a supporting groove formed inside the ring. A supporting structure 14 is provided on the side of the ring away from the supporting groove. The supporting structure 14 is a boss structure; in this embodiment, the boss is 50mm wide and 5mm high. The baffle 12 has a semi-circular cross-section, and the baffle 12 and the supporting body 11 are concentric rings, that is, the outer diameter of the semi-circular baffle 12 is the same as the inner diameter of the supporting groove. Specifically, the thickness of the semi-circular baffle 12 is 5mm.
[0032] In this embodiment, the support groove is 1200mm long and 15mm thick. Through-hole vents 13 with a diameter of 5mm and a spacing of 20mm are provided on the support groove and the semi-circular baffle 12. These through-hole vents 13 help to promptly release gases generated during the drying and firing process, ensuring consistent shrinkage between the product and the firing plate, and reducing firing defects.
[0033] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., 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, the 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.
[0034] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A firing device for large-format columnar honeycomb ceramics, characterized in that, include: The support body and the baffle provided in the support body, the baffle abutting against the support body, the support body is provided with a support groove for supporting columnar honeycomb ceramic products, at least one end of the support groove is provided with the baffle to limit the columnar honeycomb ceramic, the support body and the baffle are respectively provided with a plurality of vent holes, the vent holes are connected to the support groove.
2. The firing device for large-format columnar honeycomb ceramics according to claim 1, characterized in that, The supporting body includes a bottom and inclined portions on both sides of the bottom. The two inclined portions are smoothly connected to the bottom to form the supporting groove. A support structure is provided on the side of the bottom away from the supporting groove. The support structure is a boss structure.
3. The firing device for large-format columnar honeycomb ceramics according to claim 1, characterized in that, The cross-section of the supporting body is a ring, and the inside of the ring forms the supporting groove. A support structure is provided on the side of the ring away from the supporting groove, and the support structure is a support plane.
4. The firing device for large-format columnar honeycomb ceramics according to claim 1, characterized in that, The cross-section of the supporting body is a ring, and the inside of the ring forms the supporting groove. A support structure is provided on the side of the ring away from the supporting groove. The support structure is a boss structure.
5. The firing device for large-format columnar honeycomb ceramics according to claim 2, characterized in that, The baffle includes a baffle body and inclined splits disposed on both sides of the baffle body. The baffle body abuts against the bottom, and the inclined splits abut against the inclined portion.
6. The firing device for large-format columnar honeycomb ceramics according to claim 3, characterized in that, The cross-section of the baffle is a ring, and the baffle and the supporting body are concentric rings.
7. The firing device for large-format columnar honeycomb ceramics according to claim 4, characterized in that, The baffle has a semi-circular cross-section, and the baffle and the supporting body are concentric rings.
8. The firing device for large-format columnar honeycomb ceramics according to claim 1, characterized in that, The two ends of the baffle are flush with the two ends of the supporting body.
9. The firing device for large-format columnar honeycomb ceramics according to claim 1, characterized in that, The cross-section of the support groove is polygonal or arc-shaped.