Anti-cracking device for sintering and cooling ceramic glaze

Abstract

The utility model discloses an anti-cracking device for sintering and cooling ceramic glaze. The anti-cracking device comprises a sintering furnace, the multi-section heating structure is arranged on one side of the sintering furnace, and the multi-section heating structure comprises a heating furnace, a first heating chamber, a first annular air supply pipe, a second heating chamber, a second annular air supply pipe, a third heating chamber and a third annular air supply pipe; the multi-section cooling structure is arranged on the other side of the sintering furnace, and the multi-section cooling structure comprises a cooling furnace, a first cooling chamber, a first annular heat absorption pipe, a second cooling chamber, a second annular heat absorption pipe and a third cooling chamber. The multi-section temperature increasing and decreasing mode can be adopted in the ceramic sintering and cooling process, the ceramic temperature changes in sequence, the product quality, the structural strength and the service life are guaranteed, heat energy of ceramic can be fully utilized, and the ceramic sintering and cooling device is more environmentally friendly.

Description

Technical Field

[0001] The utility model relates to the technical field of ceramic production, in particular to an anti-cracking device for sintering and cooling ceramic glaze. Background Technique

[0002] Ceramics are materials or products made from clay or other natural mineral raw materials through processing, shaping, and high-temperature firing. During the production of ceramic products, temperature changes are often an important factor causing glaze cracks. The temperature inside the sintering furnace can reach over 1000 °C. At this time, when the ceramic enters the furnace instantaneously, due to the different internal and external temperatures of the ceramic, thermal expansion and contraction and tiny cracks will occur. After sintering, if the ceramic is directly transferred from a high-temperature environment to a normal-temperature environment, with a large temperature change range, it will also cause the ceramic to crack. Glaze cracks not only affect the appearance of ceramic products, affect product quality, but also reduce their structural strength and service life. Therefore, preventing glaze cracks in ceramic products is very important.

[0003] Currently, the anti-cracking devices for sintering and cooling ceramic glaze generally reduce ceramic cracking by controlling the sintering temperature and cooling temperature. However, not reaching the sintering temperature will affect the sintering effect of the ceramic, and it is very difficult to control the sequential change of the cooling temperature when cooling the ceramic, and it is inconvenient to utilize the thermal energy of the ceramic during cooling, resulting in thermal energy loss. Therefore, improvement is urgently needed. Content of the Utility Model

[0004] The purpose of the utility model is to provide an anti-cracking device for sintering and cooling ceramic glaze to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: An anti-cracking device for sintering and cooling ceramic glaze, including a sintering furnace;

[0006] It further includes a multi-stage heating structure, the multi-stage heating structure is arranged on one side of the sintering furnace, and the multi-stage heating structure includes a heating furnace, a first heating chamber, a first annular air supply pipe, a second heating chamber, a second annular air supply pipe, a third heating chamber, and a third annular air supply pipe. The heating furnace is arranged on one side of the sintering furnace;

[0007] The first annular air supply pipe, the second annular air supply pipe, and the third annular air supply pipe are sequentially and incrementally installed inside the first heating chamber, the second heating chamber, and the third heating chamber;

[0008] A multi-stage cooling structure, the multi-stage cooling structure is arranged on the other side of the sintering furnace, and the multi-stage cooling structure includes a cooling furnace, a first cooling chamber, a first annular heat absorption pipe, a second cooling chamber, a second annular heat absorption pipe, and a third cooling chamber;

[0009] The cooling furnace is arranged on the other side of the sintering furnace, the first cooling chamber, the second cooling chamber and the third cooling chamber are arranged in sequence inside the cooling furnace, and the first annular heat absorption tube, the second annular heat absorption tube and the third annular heat absorption tube are installed in the first cooling chamber, the second cooling chamber and the third cooling chamber in sequence.

[0010] Preferably, a first centrifugal fan, a second centrifugal fan, and a third centrifugal fan are sequentially installed at the top of the sintering furnace;

[0011] Preferably, the multi-stage heating structure also includes a first feed port, a first discharge port, and an annular electric heating tube. The first feed port is arranged at one end of the heating furnace, and the first discharge port is arranged at the other end of the heating furnace, which are used for feeding and discharging ceramics in the heating furnace.

[0012] Preferably, the annular electric heating tubes are all installed on the inner walls of the heating furnace on both sides of the first annular air supply tube, the second annular air supply tube, and the third annular air supply tube, and the number of the annular electric heating tubes increases successively to facilitate sequential heating of the ceramics.

[0013] Preferably, the input end of the first centrifugal fan is connected to the first annular heat absorption pipe through a pipe, and the output end of the first centrifugal fan is connected to the first annular air supply pipe through a pipe, so as to facilitate the transportation of high-temperature hot air extracted from the first annular heat absorption pipe to the first annular air supply pipe.

[0014] Preferably, the input end of the second centrifugal fan is connected to the second annular heat absorption pipe through a pipe, and the output end of the second centrifugal fan is connected to the second annular air supply pipe through a pipe, so as to facilitate the transportation of high-temperature hot air extracted from the second annular heat absorption pipe to the second annular air supply pipe.

[0015] Preferably, the input end of the third centrifugal fan is connected to the third annular heat absorption pipe through a pipe, and the output end of the third centrifugal fan is connected to the third annular air supply pipe through a pipe, so as to facilitate the transportation of high-temperature hot air extracted from the third annular heat absorption pipe to the third annular air supply pipe.

[0016] Preferably, the multi-stage cooling structure also includes a second feed port, a second discharge port, and a cooling fan. The second feed port is arranged at one end of the cooling furnace, and the second discharge port is arranged at the other end of the cooling furnace, which is used for feeding and discharging ceramics in the cooling furnace.

[0017] Preferably, the heat dissipation fans are all installed on the inner wall of the cooling furnace on one side of the first annular heat absorption tube, the second annular heat absorption tube, and the third annular heat absorption tube, and the number of the heat dissipation fans increases successively to accelerate the air convection inside the cooling furnace and dissipate heat from the ceramics.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows: The anti-cracking device for sintering and cooling of ceramic glaze can not only adopt a multi-stage temperature increase and decrease method during the sintering and cooling of ceramics, enabling the temperature of the ceramics to change sequentially, ensuring the product quality, structural strength and service life, but also make full use of the thermal energy of the ceramics, which is more environmentally friendly.

[0019] The ceramics first enter the heating furnace through the first feed inlet for gradual heating, and then enter the sintering furnace through the first discharge outlet. The ceramics are subjected to high-temperature sintering in the sintering furnace. After sintering, the ceramics enter the cooling furnace through the second feed inlet for gradual cooling, and then are removed through the second discharge outlet. Specifically, when the high-temperature ceramics enter the cooling furnace, the first centrifugal fan, the second centrifugal fan and the third centrifugal fan operate. When the ceramics move to the first cooling chamber, the first centrifugal fan draws away the high-temperature hot air through the first annular heat absorption pipe and cools the ceramics. When the ceramics move to the second cooling chamber, the second centrifugal fan draws away the high-temperature hot air through the second annular heat absorption pipe and cools the ceramics. When the ceramics move to the third cooling chamber, the third centrifugal fan draws away the high-temperature hot air through the third annular heat absorption pipe and cools the ceramics. At the same time, the cooling fan operates to accelerate the air convection inside the cooling furnace and dissipate heat from the ceramics. The number of the first annular heat absorption pipe, the second annular heat absorption pipe and the third annular heat absorption pipe increases sequentially, and the number of the cooling fans also increases sequentially, so that the cooling intensity increases sequentially, and thus the temperature of the ceramics gradually decreases. By controlling the sequential change of the cooling temperature, the ceramics can be prevented from cracking. Then, when the next ceramic to be sintered passes through the multi-stage heating structure, specifically, since the high-temperature hot air drawn out by the first centrifugal fan through the first annular heat absorption pipe is conveyed to the first annular air supply pipe, the high-temperature hot air drawn out by the second centrifugal fan through the second annular heat absorption pipe is conveyed to the second annular air supply pipe, and the high-temperature hot air drawn out by the third centrifugal fan through the third annular heat absorption pipe is conveyed to the third annular air supply pipe. At the same time, the annular electric heating pipe is energized to heat the ceramics, and the number of the first annular air supply pipe, the second annular air supply pipe and the third annular air supply pipe increases sequentially, and the number of the annular electric heating pipes also increases sequentially, so that the temperature of the ceramics gradually increases when passing through the multi-stage heating structure. When entering the sintering furnace for internal sintering, it is not easy to crack due to the uneven internal and external temperatures of the ceramics, thus ensuring the product quality, structural strength and service life. Moreover, by introducing the heat dissipated by the ceramics in the multi-stage cooling structure into the multi-stage heating structure to heat the subsequent sintered ceramics, the thermal energy of the ceramics can be fully utilized, which is more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a sectional structural schematic diagram of the present utility model;

[0021] Figure 2 is an enlarged structural schematic diagram of the multi-stage heating structure of the present utility model;

[0022] Figure 3 This is an enlarged structural schematic diagram of the multi-stage cooling structure of the present utility model;

[0023] Figure 4 This is a side structural schematic diagram of the multi-stage heating structure of the present utility model.

[0024] In the figure: 1, sintering furnace; 2, multi-stage heating structure; 201, heating furnace; 202, first heating chamber; 203, first annular air supply pipe; 204, second heating chamber; 205, second annular air supply pipe; 206, third heating chamber; 207, third annular air supply pipe; 208, first feed inlet; 209, first discharge outlet; 210, annular electric heating tube; 3, first centrifugal fan; 4, second centrifugal fan; 5, third centrifugal fan; 6, multi-stage cooling structure; 601, cooling furnace; 602, first cooling chamber; 603, first annular heat absorption pipe; 604, second cooling chamber; 605, second annular heat absorption pipe; 606, third cooling chamber; 607, third annular heat absorption pipe; 608, second feed inlet; 609, second discharge outlet; 610, cooling fan. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figures 1-4 , an embodiment provided by the present utility model: an anti-cracking device for sintering and cooling of ceramic glaze, including a sintering furnace 1, and a first centrifugal fan 3, a second centrifugal fan 4, and a third centrifugal fan 5 are sequentially installed at the top of the sintering furnace 1;

[0027] It further includes a multi-stage heating structure 2, the multi-stage heating structure 2 is arranged on one side of the sintering furnace 1, the multi-stage heating structure 2 includes a heating furnace 201, a first heating chamber 202, a first annular air supply pipe 203, a second heating chamber 204, a second annular air supply pipe 205, a third heating chamber 206, and a third annular air supply pipe 207. The heating furnace 201 is arranged on one side of the sintering furnace 1, the first heating chamber 202, the second heating chamber 204, and the third heating chamber 206 are sequentially arranged inside the heating furnace 201, and the first heating chamber 202, the second heating chamber 204, and the third heating chamber 206 are all communicated;

[0028] The first annular air supply duct 203, the second annular air supply duct 205, and the third annular air supply duct 207 are respectively installed inside the first heating chamber 202, the second heating chamber 204, and the third heating chamber 206, and the numbers of the first annular air supply duct 203, the second annular air supply duct 205, and the third annular air supply duct 207 increase in sequence;

[0029] The multi-stage cooling structure 6 is arranged on the other side of the sintering furnace 1. The multi-stage cooling structure 6 includes a cooling furnace 601, a first cooling chamber 602, a first annular heat absorption pipe 603, a second cooling chamber 604, a second annular heat absorption pipe 605, and a third cooling chamber 606. The cooling furnace 601 is arranged on the other side of the sintering furnace 1. The first cooling chamber 602, the second cooling chamber 604, and the third cooling chamber 606 are sequentially arranged inside the cooling furnace 601, and the first cooling chamber 602, the second cooling chamber 604, and the third cooling chamber 606 are all communicated;

[0030] The first annular heat absorption pipe 603, the second annular heat absorption pipe 605, and the third annular heat absorption pipe 607 are respectively installed inside the first cooling chamber 602, the second cooling chamber 604, and the third cooling chamber 606, and the numbers of the first annular heat absorption pipe 603, the second annular heat absorption pipe 605, and the third annular heat absorption pipe 607 increase in sequence;

[0031] The multi-stage heating structure 2 further includes a first feed port 208, a first discharge port 209, and annular electric heating pipes 210. The first feed port 208 is arranged at one end of the heating furnace 201, and the first discharge port 209 is arranged at the other end of the heating furnace 201, which is used for the feeding and discharging of ceramics in the heating furnace 201;

[0032] The annular electric heating pipes 210 are all installed on the inner wall of the heating furnace 201 on both sides of the first annular air supply duct 203, the second annular air supply duct 205, and the third annular air supply duct 207, and the numbers of the annular electric heating pipes 210 increase in sequence, which is convenient for heating ceramics sequentially;

[0033] The input end of the first centrifugal fan 3 is communicated with the first annular heat absorption pipe 603 through a pipeline, and the output end of the first centrifugal fan 3 is communicated with the first annular air supply duct 203 through a pipeline, which is convenient for transporting the high-temperature hot air extracted from the first annular heat absorption pipe 603 to the first annular air supply duct 203;

[0034] The input end of the second centrifugal fan 4 is communicated with the second annular heat absorption pipe 605 through a pipeline, and the output end of the second centrifugal fan 4 is communicated with the second annular air supply duct 205 through a pipeline, which is convenient for transporting the high-temperature hot air extracted from the second annular heat absorption pipe 605 to the second annular air supply duct 205;

[0035] The input end of the third centrifugal fan 5 is connected to the third annular heat absorption pipe 607 through a pipeline, and the output end of the third centrifugal fan 5 is connected to the third annular air supply pipe 207 through a pipeline, facilitating the transportation of the high-temperature hot air extracted from the third annular heat absorption pipe 607 into the third annular air supply pipe 207;

[0036] The multi-stage cooling structure 6 further includes a second feed inlet 608, a second discharge outlet 609, and a heat dissipation fan 610. The second feed inlet 608 is provided at one end of the cooling furnace 601, and the second discharge outlet 609 is provided at the other end of the cooling furnace 601, for the feeding and discharging of ceramics in the cooling furnace 601;

[0037] The heat dissipation fans 610 are all installed on the inner wall of the cooling furnace 601 on one side of the first annular heat absorption pipe 603, the second annular heat absorption pipe 605, and the third annular heat absorption pipe 607, and the number of the heat dissipation fans 610 increases in sequence, accelerating the air convection inside the cooling furnace 601 to dissipate heat from the ceramics.

[0038] In the use of the embodiment of the present application: First, the multi-stage heating structure 2 is arranged on one side of the sintering furnace 1. The multi-stage heating structure 2 is communicated with the sintering furnace 1 through the first discharge port 209. The multi-stage cooling structure 6 is arranged on the other side of the sintering furnace 1. The multi-stage cooling structure 6 is communicated with the sintering furnace 1 through the second feed port 608. The ceramic first enters the heating furnace 201 through the first feed port 208, is gradually heated up, and then enters the sintering furnace 1 through the first discharge port 209. The ceramic is subjected to high-temperature sintering in the sintering furnace 1. After sintering, the ceramic enters the cooling furnace 601 through the second feed port 608, is gradually cooled, and then is removed through the second discharge port 609. Specifically, the cooling furnace 601 is divided into three cooling spaces, namely the first cooling chamber 602, the second cooling chamber 604, and the third cooling chamber 606 from left to right. When the high-temperature ceramic enters the cooling furnace 601, the first centrifugal fan 3, the second centrifugal fan 4, and the third centrifugal fan 5 operate. When the ceramic moves to the first cooling chamber 602, the first centrifugal fan 3 draws away the high-temperature hot air through the first annular heat absorption pipe 603 and cools the ceramic. When the ceramic moves to the second cooling chamber 604, the second centrifugal fan 4 draws away the high-temperature hot air through the second annular heat absorption pipe 605 and cools the ceramic. When the ceramic moves to the third cooling chamber 606, the third centrifugal fan 5 draws away the high-temperature hot air through the third annular heat absorption pipe 607 and cools the ceramic. At the same time, the cooling fan 610 operates to accelerate the air convection inside the cooling furnace 601 and dissipate heat from the ceramic. The number of the first annular heat absorption pipe 603, the second annular heat absorption pipe 605, and the third annular heat absorption pipe 607 increases in sequence, and the number of the cooling fans 610 also increases in sequence, so that the cooling intensity increases gradually, thereby enabling the temperature of the ceramic to gradually decrease. By controlling the sequential change of the cooling temperature, the ceramic can be prevented from cracking. Then, when the next ceramic to be sintered passes through the multi-stage heating structure 2. Specifically, the heating furnace 201 is divided into three heating spaces, namely the first heating chamber 202, the second heating chamber 204, and the third heating chamber 206 from left to right. Since the high-temperature hot air extracted by the first centrifugal fan 3 through the first annular heat absorption pipe 603 is transported to the first annular air supply pipe 203, the high-temperature hot air extracted by the second centrifugal fan 4 through the second annular heat absorption pipe 605 is transported to the second annular air supply pipe 205, and the high-temperature hot air extracted by the third centrifugal fan 5 through the third annular heat absorption pipe 607 is transported to the third annular air supply pipe 207. At the same time, the annular electric heating pipe 210 is powered on to heat the ceramic. Moreover, the number of the first annular air supply pipe 203, the second annular air supply pipe 205, and the third annular air supply pipe 207 increases in sequence, and the number of the annular electric heating pipes 210 also increases in sequence, so that the temperature of the ceramic gradually increases when passing through the multi-stage heating structure 2. When entering the sintering furnace 1 for internal sintering, it is not easy to crack due to the uneven internal and external temperatures of the ceramic, thereby ensuring the product quality, structural strength, and service life. And,By introducing the heat dissipated by the ceramic in the multi-stage cooling structure 6 into the multi-stage heating structure 2 to heat the subsequently sintered ceramic, the thermal energy of the ceramic can be fully utilized, which is more environmentally friendly.

Claims

1. An anti-cracking device for sintering and cooling of ceramic glaze, comprising a sintering furnace (1); It is characterized in that It further includes a multi-stage heating structure (2), the multi-stage heating structure (2) is arranged on one side of the sintering furnace (1), and the multi-stage heating structure (2) includes a heating furnace (201), a first heating chamber (202), a first annular air supply pipe (203), a second heating chamber (204), a second annular air supply pipe (205), a third heating chamber (206), and a third annular air supply pipe (207); The heating furnace (201) is arranged on one side of the sintering furnace (1), the first heating chamber (202), the second heating chamber (204), and the third heating chamber (206) are sequentially arranged inside the heating furnace (201), and the first annular air supply pipe (203), the second annular air supply pipe (205), and the third annular air supply pipe (207) are sequentially and incrementally installed inside the first heating chamber (202), the second heating chamber (204), and the third heating chamber (206); a multi-stage cooling structure (6), the multi-stage cooling structure (6) is arranged on the other side of the sintering furnace (1), and the multi-stage cooling structure (6) includes a cooling furnace (601), a first cooling chamber (602), a first annular heat absorption pipe (603), a second cooling chamber (604), a second annular heat absorption pipe (605), and a third cooling chamber (606); The cooling furnace (601) is arranged on the other side of the sintering furnace (1), the first cooling chamber (602), the second cooling chamber (604), and the third cooling chamber (606) are sequentially arranged inside the cooling furnace (601), and the first annular heat absorption pipe (603), the second annular heat absorption pipe (605), and the third annular heat absorption pipe (607) are sequentially and incrementally installed inside the first cooling chamber (602), the second cooling chamber (604), and the third cooling chamber (606).

2. The anti-cracking device for sintering and cooling of a ceramic glaze according to claim 1, wherein: A first centrifugal fan (3), a second centrifugal fan (4), and a third centrifugal fan (5) are sequentially installed at the top of the sintering furnace (1).

3. A cracking prevention device for sintering and cooling of ceramic glaze, according to claim 1, characterized in that: The multi-stage heating structure (2) further includes a first feed inlet (208), a first discharge outlet (209), and annular electric heating tubes (210), the first feed inlet (208) is arranged at one end of the heating furnace (201), and the first discharge outlet (209) is arranged at the other end of the heating furnace (201).

4. A device for preventing cracking during sintering and cooling of a ceramic glaze according to claim 3, characterized in that: The annular electric heating tubes (210) are all installed on the inner wall of the heating furnace (201) on both sides of the first annular air supply pipe (203), the second annular air supply pipe (205), and the third annular air supply pipe (207), and the number of the annular electric heating tubes (210) increases sequentially.

5. The anti-cracking device for sintering and cooling of a ceramic glaze according to claim 2, characterized in that: The input end of the first centrifugal fan (3) is communicated with the first annular heat absorption pipe (603) through a pipeline, and the output end of the first centrifugal fan (3) is communicated with the first annular air supply pipe (203) through a pipeline.

6. The anti-cracking device for sintering and cooling of ceramic glaze according to claim 2, characterized in that: The input end of the second centrifugal fan (4) is communicated with the second annular heat absorption pipe (605) through a pipeline, and the output end of the second centrifugal fan (4) is communicated with the second annular air supply pipe (205) through a pipeline.

7. A device for preventing cracking during sintering and cooling of ceramic glaze, according to claim 2, characterized in that: The input end of the third centrifugal fan (5) is communicated with the third annular heat absorption pipe (607) through a pipeline, and the output end of the third centrifugal fan (5) is communicated with the third annular air supply pipe (207) through a pipeline.

8. An anti-cracking device for sintering and cooling ceramic glaze according to claim 1, characterized in that: The multi-stage cooling structure (6) further includes a second feed port (608), a second discharge port (609), and a heat dissipation fan (610). The second feed port (608) is arranged at one end of the cooling furnace (601), and the second discharge port (609) is arranged at the other end of the cooling furnace (601).

9. An anti-cracking device for sintering and cooling of ceramic glaze, according to claim 8, characterized in that: The heat dissipation fans (610) are all installed on the inner wall of the cooling furnace (601) on one side of the first annular heat absorption pipe (603), the second annular heat absorption pipe (605), and the third annular heat absorption pipe (607), and the number of the heat dissipation fans (610) increases in sequence.

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