High-strength refractory ceramic and method for producing the same

Abstract

The application discloses high-strength fireproof ceramic and a preparation method thereof, and aims to provide high-strength fireproof ceramic and a preparation method thereof which are installed with a structure for guiding heat in the ceramic to an external exhaust port. The high-strength fireproof ceramic comprises a ceramic main body, a plurality of heat-conducting shafts are installed on the ceramic main body, the plurality of heat-conducting shafts are symmetrically distributed in the ceramic main body, adjacent heat-conducting shafts are connected to each other, a joint is arranged on the heat-conducting shaft, and the joint is arranged on the outer edge of the ceramic main body. The high-strength fireproof ceramic has the advantages that the ceramic main body can guide heat in the ceramic to the external exhaust port, air in the ceramic main body can be exhausted, and the probability that the protrusion is separated from the protective layer under the influence of external force is reduced.

Description

Technical Field

[0001] This invention relates to the field of ceramic preparation technology, and in particular to a high-strength refractory ceramic and its preparation method. Background Technology

[0002] Ceramics, or "china," is a general term encompassing pottery and porcelain. It refers to any object made from clay (either earthenware or porcelain clay) through processes such as batching, shaping, drying, and firing. Ceramics are widely used in various environments. With the development of the times, both the production and consumption of ceramics have seen significant growth. However, currently available ceramics have relatively poor refractoriness; they may flake off at temperatures exceeding 1000℃, making them unsuitable for high-temperature environments.

[0003] Chinese Patent Publication No. CN210374641U, published on April 21, 2020, discloses a refractory ceramic shelf panel, comprising a panel body. Ventilation holes are provided on both sides of the front of the panel body, a forming groove is provided in the middle of the panel body, expansion joints are provided on both sides of the panel body and around the forming groove, support blocks are fixedly installed on both sides of the back of the panel body, and a reinforcing crack-resistant layer is fixedly installed inside the panel body. An anti-oxidation layer is fixedly installed on one side of the reinforcing crack-resistant layer. The drawback of this technical solution is that, in the process of dissipating heat from the inside of the panel body through the ventilation holes and mesh ventilation structure, the lack of a heat-conducting structure results in slow heat dissipation or heat accumulation within the panel body.

[0004] In summary, a structure that can conduct heat can be designed to allow heat inside the ceramic to be dissipated smoothly. Summary of the Invention

[0005] The present invention aims to overcome the shortcomings of existing technologies that lack heat-conducting structures, and provides a high-strength refractory ceramic with a structure that directs heat from the ceramic to an external exhaust port, as well as a method for preparing the same.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A high-strength refractory ceramic includes a ceramic body, on which a plurality of heat-conducting shafts are mounted, the plurality of heat-conducting shafts being symmetrically distributed within the ceramic body, adjacent heat-conducting shafts being interconnected, and a joint being provided on the heat-conducting shaft, the joint being located on the outer edge of the ceramic body.

[0007] This design allows heat to be dissipated from the ceramic body by installing heat-conducting shafts on it. These heat-conducting shafts are symmetrically distributed within the ceramic body, thus distributing the heat conduction effect in all directions within the ceramic body. Adjacent heat-conducting shafts are interconnected, and the joints on the heat-conducting shafts are located on the outer edge of the ceramic body. The heat inside the ceramic body is then conducted to the outer edge of the ceramic body through the heat-conducting shafts and then dissipated to the outside. This achieves the purpose of installing a structure that guides the heat inside the ceramic body to the external exhaust port.

[0008] Preferably, the ceramic body is fitted with a protective layer, the inner edge of which is connected to the ceramic body, and the connector is located on the outer edge of the protective layer. This design, by using a protective layer to encase the ceramic body, provides protection and reduces the probability of external heat being transferred to the ceramic body when it is placed in a high-temperature environment. The connection between the inner edge of the protective layer and the ceramic body, and the placement of the connector on the outer edge of the protective layer, facilitates the smooth operation of heat dissipation from within the ceramic body via a heat-conducting shaft.

[0009] Preferably, a plurality of protrusions are installed on the outer edge of the protective layer, each protrusion corresponding to a connector, the connector being connected to the protrusion, and the protrusion being connected to the protective layer. This design, with the protrusions on the outer edge of the protective layer corresponding to the connectors, not only reduces the amount of external heat transferred into the ceramic body through the protrusions, but also ensures a more stable connection between the connector and the protrusions, allowing the heat-conducting shaft to operate smoothly.

[0010] Preferably, the protrusion is equipped with several connecting blocks, which are symmetrically distributed around the protrusion. The protective layer has several connecting grooves, each corresponding to a connecting block. The connecting blocks are connected to the protective layer through the cooperation of the connecting blocks and the connecting grooves. This design allows the connecting blocks to be inserted into the connecting grooves on the protective layer, thus ensuring that the protrusion with the connecting blocks is stably positioned on the protective layer. Since there are several protrusions, and the connecting blocks are symmetrically distributed around the protrusion with respect to the connecting grooves, the connection of the protrusions is more stable, reducing the probability of the protrusions detaching from the protective layer due to external impact during ceramic use, ensuring safety and reliability.

[0011] Preferably, a venting mesh is fitted onto the heat-conducting shaft, and the venting mesh is detachably connected to the heat-conducting shaft and connected to the protrusion. This design, with the venting mesh fitted onto the heat-conducting shaft, not only allows heat inside the ceramic body to be smoothly discharged through the heat-conducting shaft, but also allows gas inside the ceramic body to be smoothly discharged under the guiding effect of the heat-conducting shaft. This not only enhances the strength of the ceramic, but also accelerates the discharge of heat from the ceramic body.

[0012] Preferably, the heat-conducting shaft is fitted with several connecting rings, which are evenly distributed. The venting mesh is connected to the heat-conducting shaft through these connecting rings, and each connecting ring has a symmetrically distributed number of connecting ring holes. This design, with the connecting rings fitted onto the heat-conducting shaft, ensures a secure connection between the venting mesh and the shaft, reducing the probability of the venting mesh detaching from the shaft due to external forces. The even distribution of the connecting rings further enhances the stability of the connection between the venting mesh and the heat-conducting shaft. The symmetrically distributed connecting ring holes on the connecting rings prevent gas inside the ceramic body from being blocked during the venting process.

[0013] Preferably, a vent pipe is installed on the connecting block. One end of the vent pipe is connected to the venting mesh, and the other end is placed inside the connecting block. Several exhaust pipes are evenly distributed on the vent pipe, with one end connected to the vent pipe and the other end placed on the outer edge of the protective layer. This design, with the vent pipe installed on the connecting block, one end connected to the venting mesh and the other end placed inside the connecting block, and several exhaust pipes evenly distributed on the vent pipe, one end of the exhaust pipe connected to the vent pipe and the other end placed on the outer edge of the protective layer, allows the gas inside the ceramic body to be smoothly discharged through the vent pipe to the exhaust pipe, and then discharged outside through the exhaust pipe. This allows the gas to carry heat smoothly through the vent pipe and exhaust pipe for discharge.

[0014] Preferably, the protective layer has several expansion grooves symmetrically distributed along its outer edge, with adjacent grooves interconnected. This design, by providing expansion grooves, ensures that the protective layer has room to expand when heated, reducing the probability of cracks forming during thermal expansion. Preferably, the expansion tank includes a bottom and a top, and an installation groove is provided on the expansion tank, positioned between the top and bottom. A wire mesh is installed inside the installation groove, with the outer edge of the wire mesh placed within the groove. This design, by creating an installation groove between the top and bottom of the expansion tank, allows the outer edge of the wire mesh to be placed inside, thus protecting the expansion tank and preventing large external objects from accumulating inside and affecting the performance of the ceramic.

[0015] This invention also provides a method for preparing high-strength refractory ceramics, specifically including the following steps: Step 1: Connect several heat-conducting shafts together to form a heat-conducting frame. Then install the heat-conducting frame inside the ceramic body, so that the ends of the heat-conducting shafts pass through the outer edge of the ceramic body and are placed on the outside. Step 2: Place several connecting blocks in the connecting groove of the protective layer. The connecting blocks are symmetrically distributed around the protrusion. Connect the protrusion to the protective layer. The several exhaust pipes on the connecting blocks need to be connected to the vent pipe. Step 3: Attach a protective layer to the outer edge of the ceramic body. The end of the heat-conducting shaft passes through the outer edge of the protective layer and is placed on the outside. The heat-conducting shaft is fitted with a vent mesh. Connect the end of the vent pipe to the vent mesh so that the vent mesh can be connected to the outside through the exhaust pipe. Step 4: Make several expansion grooves on the outer edge of the ceramic body, and make adjacent expansion grooves interconnected. Make installation grooves on the expansion grooves, and then place the outer edge of the wire mesh in the installation grooves to complete the ceramic preparation.

[0016] The beneficial effects of this invention are: it can achieve the purpose of installing a structure that directs heat from the ceramic to the exhaust port; it has the effect of exhausting air from the ceramic body; and it reduces the probability of the protrusions detaching from the protective layer due to external forces. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the distribution of the heat-conducting shafts in this invention; Figure 3 yes Figure 2 A schematic diagram of the cross-section at point A in the diagram; Figure 4 This is a schematic diagram of the connection of the ventilation network of the present invention; Figure 5 yes Figure 3 A schematic diagram of direction B in the diagram; Figure 6 yes Figure 2 A structural schematic diagram of the cross-section at point C.

[0018] In the diagram: 1. Protective layer, 2. Ceramic body, 3. Heat-conducting shaft, 4. Protrusion, 5. Connecting block, 6. Ventilation mesh, 7. Ventilation pipe, 8. Exhaust pipe, 9. Expansion groove, 10. Mounting groove, 11. Wire mesh, 12. Connecting ring, 13. Connecting ring hole. Detailed Implementation

[0019] The invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0020] like Figure 1and Figure 2 In the embodiment shown, a high-strength refractory ceramic includes a ceramic body 2, on which a plurality of heat-conducting shafts 3 are installed. The plurality of heat-conducting shafts 3 are symmetrically distributed within the ceramic body 2, and adjacent heat-conducting shafts 3 are connected to each other. A joint is provided on the heat-conducting shaft 3, and the joint is placed on the outer edge of the ceramic body 2.

[0021] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a protective layer 1 is fitted over the ceramic body 2. The inner edge of the protective layer 1 is connected to the ceramic body 2, and the connector is located on the outer edge of the protective layer 1. Several protrusions 4 are installed on the outer edge of the protective layer 1, each corresponding to a connector. The connector connects to the protrusion 4, and the protrusion 4 connects to the protective layer 1. Several connecting blocks 5 are installed on the protrusions 4, symmetrically distributed around the protrusions 4. Several connecting grooves are provided on the protective layer 1, each corresponding to a connecting block 5. The connecting blocks 5 are connected to the protective layer 1 through the cooperation of the connecting blocks 5 and the connecting grooves. A venting mesh 6 is fitted onto the heat-conducting shaft 3, detachably connected to the heat-conducting shaft 3, and connected to the protrusions 4. Several connecting rings 12 are fitted onto the heat-conducting shaft 3, evenly distributed. The venting mesh 6 is connected to the heat-conducting shaft 3 through the connecting rings 12, and several connecting ring holes 13 are symmetrically distributed on the connecting rings 12. A vent pipe 7 is installed on the connecting block 5. One end of the vent pipe 7 is connected to the venting net 6, and the other end of the vent pipe 7 is placed inside the connecting block 5. Several exhaust pipes 8 are evenly distributed on the vent pipe 7. One end of the exhaust pipe 8 is connected to the vent pipe 7, and the other end of the exhaust pipe 8 is placed on the outer edge of the protective layer 1.

[0022] like Figure 1 , Figure 2 and Figure 6 As shown, the protective layer 1 has several expansion grooves 9, which are symmetrically distributed on the outer edge of the protective layer 1, and adjacent expansion grooves 9 are interconnected. Each expansion groove 9 includes a bottom and a top, and an installation groove 10 is provided on the expansion groove 9. The installation groove 10 is placed between the top and bottom of the groove, and a wire mesh 11 is installed in the installation groove 10, with the outer edge of the wire mesh 11 placed inside the installation groove 10.

[0023] This invention also provides a method for preparing high-strength refractory ceramics, specifically including the following steps: Step 1: Connect several heat-conducting shafts 3 to form a heat-conducting frame, then install the heat-conducting frame inside the ceramic body 2, so that the ends of the heat-conducting shafts 3 pass through the outer edge of the ceramic body 2 and are placed on the outside; Specifically: First, several heat-conducting shafts 3 are connected at their ends to form a heat-conducting frame structure, facilitating installation inside the ceramic body 2. Before connecting the heat-conducting shafts 3, several connecting rings 12 are fitted onto the outside of the heat-conducting shafts 3, ensuring the rings are evenly distributed. Furthermore, several connecting ring holes 13 are symmetrically distributed on the connecting rings 12, allowing air to freely circulate between their upper and lower ends. Next, a venting mesh 6 is fitted onto the outside of the heat-conducting shafts 3, ensuring it is connected to the heat-conducting shafts 3 via the connecting rings 12. Then, the assembled heat-conducting frame is installed inside the ceramic body 2, with the heat-conducting shafts 3 evenly distributed in all directions of the ceramic body 2. Simultaneously, the ends of the heat-conducting shafts 3 must pass through the outer edge of the ceramic body 2 and extend to the outside.

[0024] Step 2: Place several connecting blocks 5 in the connecting groove of the protective layer 1. The several connecting blocks 5 are symmetrically distributed around the protrusion 4. Make sure the protrusion 4 is connected to the protective layer 1. The several exhaust pipes 8 on the connecting blocks 5 need to be connected to the vent pipe 7. Specifically, after the heat-conducting bracket is installed on the ceramic body 2, several connecting grooves can be opened on the outer edge of the protective layer 1. The connecting grooves need to correspond one-to-one with the connecting blocks 5. In this way, the connecting blocks 5 can be placed in the connecting grooves, and then the connection work of the protrusions 4 connected to the connecting blocks 5 is completed. The several connecting blocks 5 are symmetrically distributed with the protrusions 4 as the center, so as to make the connection between the protrusions 4 and the protective layer 1 more stable and reduce the probability of the protrusions 4 being detached from the protective layer 1 due to external forces. Next, insert the vent pipe 7 at the lower end of the connecting block 5, with both ends of the vent pipe 7 positioned inside and outside the connecting block 5 respectively. Then, insert several exhaust pipes 8 from the upper end of the protective layer 1, distributing the exhaust pipes 8 evenly. One end of the exhaust pipe 8 is connected to the vent pipe 7, while the other end passes through the protective layer 1 and is placed outside, allowing air at the vent pipe 7 to be smoothly discharged through the exhaust pipe 8. The connecting block 5 needs to be installed on the lower side of the protrusion 4 to facilitate the connection of the vent pipe 7. The protrusion 4 is a raised structure, which not only reduces the amount of external heat introduced into the ceramic body 2 after passing through the protrusion 4, but also allows the connection between the connector and the protrusion 4 to be more stable, so that the heat conduction work can proceed smoothly.

[0025] Step 3: Connect the protective layer 1 to the outer edge of the ceramic body 2. The end of the heat-conducting shaft 3 passes through the outer edge of the protective layer 1 and is placed on the outside. The heat-conducting shaft 3 is fitted with a vent mesh 6. Connect the end of the vent pipe 7 to the vent mesh 6 so that the vent mesh 6 can be connected to the outside through the exhaust pipe 8. Specifically, the protective layer 1, which is equipped with the vent pipe 7 and the exhaust pipe 8, is fitted onto the outer edge of the ceramic body 2. During installation, the protrusion 4 can be placed outside through the outer edge of the protective layer 1. Then, the end of the vent pipe 7 is connected to the vent mesh 6 on the heat-conducting shaft 3 so that the air inside the ceramic body 2 can be smoothly discharged through the vent pipe 7 and the exhaust pipe 8.

[0026] Step 4: Several expansion grooves 9 are made on the outer edge of the ceramic body 2, and adjacent expansion grooves 9 are connected to each other. Installation grooves 10 are made on the expansion grooves 9, and then the outer edge of the wire mesh 11 is placed in the installation groove 10 to complete the ceramic preparation work.

[0027] Specifically, several expansion grooves 9 are made on the outer edge of the ceramic body 2. These expansion grooves 9 are evenly distributed and adjacent expansion grooves 9 are interconnected. Installation grooves 10 are also made on the expansion grooves 9, which include a bottom and a top. The installation grooves 10 are placed between the top and bottom of the groove. Then, the outer edge of the wire mesh 11 can be placed in the installation groove 10 to ensure that the wire mesh 11 is positioned within the expansion grooves 9 of the ceramic body 2. This effectively protects the expansion grooves 9, preventing large objects from accumulating within them and affecting the performance of the ceramic.

[0028] First, several heat-conducting shafts 3 are connected at their ends to form a heat-conducting frame structure, which is convenient for installation inside the ceramic body 2. Before connecting the heat-conducting shafts 3 to each other, several connecting rings 12 need to be fitted onto the outside of the heat-conducting shafts 3, so that the connecting rings 12 are evenly distributed on the heat-conducting shafts 3. Moreover, several connecting ring holes 13 are symmetrically distributed on the connecting ring holes 13, so that air can float freely at the top and bottom ends of the connecting rings 12. Next, the venting mesh 6 is fitted onto the outside of the heat-conducting shafts 3. When fitting the venting mesh 6, it can be connected to the heat-conducting shafts 3 through the connecting rings 12. Then, the heat-conducting frame formed by the connection is installed inside the ceramic body 2, so that the heat-conducting shafts 3 are evenly distributed in all directions of the ceramic body 2. At the same time, the ends of the heat-conducting shafts 3 also need to pass through the outer edge of the ceramic body 2 and be placed on the outside.

[0029] After the heat-conducting bracket is installed on the ceramic body 2, several connecting grooves can be made on the outer edge of the protective layer 1. The connecting grooves need to correspond one-to-one with the connecting blocks 5. Then the connecting blocks 5 can be placed in the connecting grooves, and the connection of the protrusions 4 connected to the connecting blocks 5 is completed. The several connecting blocks 5 are symmetrically distributed with the protrusions 4 as the center, so that the connection between the protrusions 4 and the protective layer 1 is more stable and the probability of the protrusions 4 being detached from the protective layer 1 due to external forces is reduced. Next, insert the vent pipe 7 at the lower end of the connecting block 5, with both ends of the vent pipe 7 positioned inside and outside the connecting block 5 respectively. Then, insert several exhaust pipes 8 from the upper end of the protective layer 1, distributing the exhaust pipes 8 evenly. One end of the exhaust pipe 8 is connected to the vent pipe 7, while the other end passes through the protective layer 1 and is placed outside, allowing air at the vent pipe 7 to be smoothly discharged through the exhaust pipe 8. The connecting block 5 needs to be installed on the lower side of the protrusion 4 to facilitate the connection of the vent pipe 7. The protrusion 4 is a raised structure, which not only reduces the amount of external heat introduced into the ceramic body 2 after passing through the protrusion 4, but also allows the connection between the connector and the protrusion 4 to be more stable, so that the heat conduction work can proceed smoothly.

[0030] The protective layer 1, which is equipped with the vent pipe 7 and the exhaust pipe 8, is fitted onto the outer edge of the ceramic body 2. During installation, the protrusion 4 can be placed outside through the outer edge of the protective layer 1. Then, the end of the vent pipe 7 is connected to the vent mesh 6 on the heat-conducting shaft 3 so that the air inside the ceramic body 2 can be smoothly discharged through the vent pipe 7 and the exhaust pipe 8.

[0031] Finally, several expansion grooves 9 are made on the outer edge of the ceramic body 2. These expansion grooves 9 need to be evenly distributed, and adjacent expansion grooves 9 are interconnected. Installation grooves 10 also need to be made on the expansion grooves 9. Each expansion groove 9 includes a bottom and a top. The installation groove 10 is placed between the top and bottom of the groove. Then, the outer edge of the wire mesh 11 can be placed in the installation groove 10 to ensure that the wire mesh 11 is positioned within the expansion groove 9 of the ceramic body 2. This effectively protects the expansion grooves 9, preventing large external objects from accumulating within them and affecting the performance of the ceramic.

[0032] Here, the heat-conducting frame, formed by several heat-conducting shafts 3 connected together, not only guides the heat inside the ceramic body 2 to the vent pipe 7, and then exhausts it through the exhaust pipe 8, achieving the purpose of a structure that guides the heat inside the ceramic to the exhaust port, but also allows the gas inside the ceramic body 2 to smoothly carry the heat and exhaust it through the vent pipe 7 and the exhaust pipe 8. In high-temperature environments, the protective layer 1 protects the ceramic body 2, reducing the probability of damage caused by high temperatures. Simultaneously, when the protective layer 1 expands due to heat in high-temperature environments, it expands into the expansion groove 9, reducing the probability of cracks caused by thermal expansion.

[0033] The protective layer 1 here can be made of boron carbide, which is not only lightweight and heat-resistant, but also has high hardness, high wear resistance, and high impact resistance, making the ceramic stronger. The heat-conducting shaft 3 can be made of AlN, which not only has good thermal conductivity, but also a high melting point, making it safe and reliable.

Claims

1. A high-strength refractory ceramic, characterized in that, The system includes a ceramic body (2), on which several heat-conducting shafts (3) are mounted. The heat-conducting shafts (3) are symmetrically distributed within the ceramic body (2), and adjacent heat-conducting shafts (3) are connected to each other. Each heat-conducting shaft (3) has a connector, which is located on the outer edge of the ceramic body (2). The ceramic body (2) is fitted with a protective layer (1), the inner edge of which is connected to the ceramic body (2). The connector is located on the outer edge of the protective layer (1), and several protrusions (4) are mounted on the outer edge of the protective layer (1). Each protrusion (4) corresponds to a connector, and the connector is connected to the protrusion (4). The protrusion (4) is connected to the protective layer (1), and several protrusions (4) are mounted on the protrusion (4). A number of connecting blocks (5) are symmetrically distributed around the protrusion (4). The protective layer (1) is provided with a number of connecting grooves, which correspond one-to-one with the connecting blocks (5). The connecting blocks (5) are connected to the protective layer (1) through the cooperation of the connecting blocks (5) and the connecting grooves. A ventilation mesh (6) is fitted on the heat-conducting shaft (3). The ventilation mesh (6) is detachably connected to the heat-conducting shaft (3). The ventilation mesh (6) is connected to the protrusion (4). A number of connecting rings (12) are fitted on the heat-conducting shaft (3). The number of connecting rings (12) are evenly distributed. The ventilation mesh (6) is connected to the heat-conducting shaft (3) through the connecting rings (12). A number of connecting ring holes (13) are symmetrically distributed on the connecting rings (12).

2. The high-strength refractory ceramic according to claim 1, characterized in that, A vent pipe (7) is installed on the connecting block (5). One end of the vent pipe (7) is connected to the venting net (6), and the other end of the vent pipe (7) is placed inside the connecting block (5). Several exhaust pipes (8) are evenly distributed on the vent pipe (7). One end of the exhaust pipe (8) is connected to the vent pipe (7), and the other end of the exhaust pipe (8) is placed on the outer edge of the protective layer (1).

3. A high-strength refractory ceramic according to claim 1, characterized in that, The protective layer (1) is provided with a number of expansion grooves (9), which are symmetrically distributed on the outer edge of the protective layer (1), and adjacent expansion grooves (9) are interconnected.

4. A high-strength refractory ceramic according to claim 3, characterized in that, The expansion groove (9) includes a bottom and a top. An installation groove (10) is provided on the expansion groove (9). The installation groove (10) is placed between the top and bottom of the groove. A wire mesh (11) is installed in the installation groove (10). The outer edge of the wire mesh (11) is placed in the installation groove (10).

5. A method for preparing the high-strength refractory ceramic according to claim 4, characterized in that, Includes the following steps: Step 1: Connect several heat-conducting shafts (3) to form a heat-conducting frame, and then install the heat-conducting frame inside the ceramic body (2), so that the ends of the heat-conducting shafts (3) pass through the outer edge of the ceramic body (2) and are placed on the outside; Step 2: Place several connecting blocks (5) in the connecting groove of the protective layer (1). The several connecting blocks (5) are symmetrically distributed around the protrusion (4). Connect the protrusion (4) to the protective layer (1). The several exhaust pipes (8) on the connecting blocks (5) need to be connected to the ventilation pipe (7). Step 3: Connect the protective layer (1) to the outer edge of the ceramic body (2). The end of the heat-conducting shaft (3) passes through the outer edge of the protective layer (1) and is placed on the outside. The heat-conducting shaft (3) is fitted with a ventilation net (6). Connect the end of the ventilation pipe (7) to the ventilation net (6) so that the ventilation net (6) can be connected to the outside through the exhaust pipe (8). Step 4: Several expansion grooves (9) are opened on the outer edge of the ceramic body (2), and the adjacent expansion grooves (9) are connected to each other. An installation groove (10) is opened on the expansion groove (9), and then the outer edge of the wire mesh (11) is placed in the installation groove (10) to complete the preparation of the ceramic.

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