High-temperature-resistant ceramic crucible

Abstract

The utility model discloses a high temperature resistant ceramic crucible, relates to the crucible device field, including crucible body and crucible cover, the outside surface of crucible body and close to the upper end position is fixedly sleeved with fixed ring, the inside of fixed ring is provided with crucible cover, the front surface of fixed ring is provided with the gap, and the fixed ring is provided with the gap. Placing grooves are formed in the surfaces of the two sides of the fixing ring, guide grooves are formed in the placing grooves, a plurality of grooves are formed in the fixing ring in a surrounding mode, driven rods are fixedly installed at the positions, close to the lower end, of the surfaces of the two sides of the crucible cover, and a plurality of pressure relief openings are formed in the crucible cover in a surrounding mode. The pressure relief opening and the arc-shaped surface are arranged in the crucible, so that when the internal pressure of the crucible is too high, redundant pressure can be automatically released, meanwhile, the crucible cover can automatically ascend and descend along with the change of the internal pressure, the impact of thermal expansion and high pressure on the crucible cover is reduced, and the overall service life of the crucible is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of crucible devices, and in particular to a high-temperature resistant ceramic crucible. Background Technology

[0002] In the field of high-temperature material processing, ceramic crucibles are a widely used piece of equipment, mainly used for melting, heating and processing various high-temperature materials, such as metals, alloys, glass, and ceramic powders. However, traditional ceramic crucibles have some problems and limitations in actual use, which limit their performance and service life in high-temperature environments.

[0003] Currently, during use, the internal pressure of the crucible increases significantly with rising temperature. Traditional crucibles lack an effective automatic pressure relief mechanism. When the internal pressure is too high, it may cause the crucible to crack or even explode, posing a serious safety hazard to operators. Frequent high-pressure conditions will also accelerate the damage to the crucible and shorten its service life. At the same time, traditional ceramic crucibles usually only have one layer of high-temperature resistant material, which has poor heat insulation performance. In high-temperature environments, a large amount of heat will be lost to the surrounding environment through the crucible wall. This not only wastes energy but may also cause the external temperature of the crucible to be too high, affecting the safety of operators and the stability of the equipment.

[0004] Therefore, it is necessary to propose a high-temperature resistant ceramic crucible to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a high-temperature resistant ceramic crucible to solve the problems mentioned in the background art, such as the lack of an effective automatic pressure relief mechanism in traditional crucibles, which poses serious safety hazards to operators, and the fact that traditional ceramic crucibles usually only have one layer of high-temperature resistant material, resulting in poor heat insulation performance.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-temperature resistant ceramic crucible, comprising a crucible body and a crucible lid, wherein a fixing ring is fixedly sleeved on the outer surface of the crucible body near the upper end, and the crucible lid is fitted inside the fixing ring;

[0007] The front surface of the fixing ring has a slit, the two side surfaces of the fixing ring have placement grooves, the placement grooves have guide grooves, and the fixing ring has multiple grooves around it.

[0008] A driven rod is fixedly installed on both sides of the crucible lid near the lower end, and multiple pressure relief ports are opened around the crucible lid.

[0009] Preferably, the pressure relief port is located between the grooves, and the pressure relief port and the grooves are staggered.

[0010] Preferably, the guide groove is an upward arc-shaped design, and the connection between the guide groove and the placement groove is provided with an arc-shaped surface.

[0011] Preferably, the driven rod is located in the placement groove and slides in the guide groove.

[0012] Preferably, a lid opening is fixedly installed on the front surface of the crucible lid near its lower end, and a sphere is fixedly installed at the front end of the lid opening.

[0013] Preferably, a gate is fixedly installed on the front surface of the crucible body near the upper end, the gate corresponds to the cap opening, both the gate and the cap opening are located in a gap, and the width of the gap is greater than the width of the gate and the cap opening.

[0014] Preferably, an observation window is provided on the upper surface of the crucible lid near the front.

[0015] Preferably, a zirconia high-temperature resistant layer is provided on the inner surface of the crucible body, a boron nitride thermal shock resistant layer is provided on the outer surface of the crucible body, and an aerogel thermal insulation layer is sandwiched between the zirconia high-temperature resistant layer and the boron nitride thermal shock resistant layer.

[0016] The technical effects and advantages of this utility model are as follows:

[0017] 1. The pressure relief port and arc-shaped surface provided in this utility model can automatically release excess pressure when the internal pressure of the crucible is too high, avoiding crucible rupture or explosion due to excessive pressure, thereby effectively protecting the safety of operators and reducing the risk of accidents. At the same time, the cooperative design of the driven rod and the guide groove allows the crucible lid to automatically rise and fall with changes in internal pressure, reducing the impact of thermal expansion and high pressure on the crucible lid, thereby extending the overall service life of the crucible and solving the problem that the lack of an effective automatic pressure relief mechanism in traditional crucibles poses a serious safety hazard to operators.

[0018] 2. The multi-layered structure and the application of insulating materials in this invention, through the high-temperature resistant zirconium oxide layer, the thermal shock resistant boron nitride layer, and the aerogel insulating layer, not only provide excellent thermal insulation performance but also enhance the crucible's thermal shock resistance and high-temperature stability. This design enables the crucible to maintain structural stability under extreme high-temperature environments, avoiding sealing failure due to material softening or deformation. At the same time, the good thermal insulation performance not only reduces heat loss but also reduces mechanical stress caused by temperature changes, which helps extend the service life of the crucible and reduce equipment damage caused by high-temperature deformation, thermal shock cracking, and other problems. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a high-temperature resistant ceramic crucible according to the present invention;

[0020] Figure 2 This is an exploded view of a high-temperature resistant ceramic crucible according to the present invention.

[0021] Figure 3 This is a schematic diagram of the fixing ring for a high-temperature resistant ceramic crucible according to the present invention;

[0022] Figure 4 This is a cross-sectional view of the crucible body of a high-temperature resistant ceramic crucible according to this utility model;

[0023] In the figure: 1. Crucible body; 101. Gate; 102. Boron nitride thermal shock resistant layer; 103. Aerogel insulation layer; 104. Zirconia high temperature resistant layer; 2. Fixing ring; 201. Groove; 202. Placement groove; 203. Guide groove; 204. Gap; 205. Arc-shaped surface; 3. Crucible lid; 301. Observation window; 302. Lid opening; 303. Sphere; 304. Pressure relief port; 305. Driven rod. Detailed Implementation

[0024] This utility model provides a high-temperature resistant ceramic crucible; please refer to the appendix. Figure 1 As shown.

[0025] A high-temperature resistant ceramic crucible mainly consists of a crucible body 1 and a crucible lid 3. The crucible body 1 is the core part of the entire crucible, used to contain high-temperature materials and withstand high-temperature environments. To ensure that the crucible lid 3 can be stably installed on the crucible body 1, a fixing ring 2 is fixedly fitted on the outer surface of the crucible body 1 near the upper end. The function of the fixing ring 2 is to provide a stable support and positioning structure for the crucible lid 3, so that the crucible lid 3 can be tightly locked inside the fixing ring 2, thereby achieving a reliable connection between the crucible body 1 and the crucible lid 3. Through the locking installation method of the fixing ring 2 and the crucible lid 3, the stability of the crucible lid 3 in high-temperature environments is ensured, avoiding the crucible lid 3 from loosening or falling off due to factors such as thermal expansion. At the same time, the design of the fixing ring 2 provides a good sealing environment for the crucible lid 3, which helps to reduce heat loss and the entry of external impurities, thereby improving the heat preservation performance and service life of the crucible.

[0026] Please see the appendix Figure 2 As shown.

[0027] An observation window 301 is provided on the upper surface of the crucible lid 3 near the front. The observation window 301 allows the user to intuitively understand the state of the high-temperature material inside the crucible without opening the crucible lid 3, thereby better controlling the heating process.

[0028] Specifically, a lid opening 302 is fixedly installed on the front surface of the crucible lid 3 near the lower end. A sphere 303 is fixedly installed at the front end of the lid opening 302. The sphere 303 is located between the gate 101 and the lid opening 302, which plays a sealing role and prevents high-temperature hot air from escaping from between the lid opening 302 and the gate 101. This keeps the temperature inside the crucible stable, reduces heat loss, and means reduces energy consumption and improves energy utilization efficiency, which meets the requirements of energy conservation and environmental protection.

[0029] Specifically, driven rods 305 are fixedly installed on both sides of the crucible lid 3 near the lower end. The main function of the driven rods 305 is to cooperate with the guide grooves 203 on the fixing ring 2 to realize the automatic lifting function of the crucible lid 3 when affected by hot gas. Multiple pressure relief ports 304 are arranged around the crucible lid 3. The setting of pressure relief ports 304 provides an automatic pressure relief mechanism for the crucible. When the internal pressure of the crucible is too high, some pressure can be released through the pressure relief ports 304 to avoid the crucible from cracking or being damaged due to excessive pressure. Through the automatic pressure relief and automatic lifting functions, the impact of pressure and thermal expansion on the crucible lid 3 is reduced, thereby extending the overall service life of the crucible. At the same time, the automatic pressure relief function can effectively prevent the crucible from exploding due to excessive pressure in extreme cases, thus improving the safety of the crucible during use.

[0030] Please see the appendix Figure 2 -Appendix Figure 3 As shown.

[0031] The front surface of the fixing ring 2 has a slit 204, and the two sides of the fixing ring 2 have placement grooves 202, and the placement grooves 202 have guide grooves 203.

[0032] Specifically, the guide groove 203 has an upward arc-shaped design. This design allows the crucible lid 3 to move upward along the guide groove 203 when it rises due to the influence of hot gas, thus automatically releasing pressure. An arc-shaped surface 205 is provided at the connection between the guide groove 203 and the placement groove 202. The function of the arc-shaped surface 205 is to ensure that the upward force can break through the arc-shaped surface 205 and enter the guide groove 203 only when the pressure inside the crucible reaches a specific value, thereby achieving automatic pressure release. This design avoids excessive heat loss due to frequent pressure release, which would affect the reaction environment inside the crucible. By reducing unnecessary heat loss, it helps to maintain stable temperature and pressure inside the crucible, thereby improving energy utilization efficiency and the processing efficiency of high-temperature materials.

[0033] Specifically, the driven rod 305 is located in the placement groove 202 and slides in the guide groove 203. After the pressure is released, under the gravity of the crucible cover 3, the driven rod 305 drives the crucible cover 3 to reset and reseal the crucible body 1.

[0034] Specifically, the fixing ring 2 has multiple grooves 201 around it, which are used to discharge hot air and pressure.

[0035] Specifically, the pressure relief port 304 is located between the grooves 201, and the pressure relief port 304 and the grooves 201 are staggered. This staggered distribution design helps to reduce the direct loss of heat while releasing pressure and maintain the stable temperature inside the crucible.

[0036] Furthermore, a gate 101 is fixedly installed on the front surface of the crucible body 1 near the upper end. The gate 101 corresponds to the cap 302, ensuring the sealing of the gate 101 and the cap 302 under high temperature conditions.

[0037] Specifically, both the gate 101 and the cap 302 are located within the gap 204. The width of the gap 204 is greater than the width of the gate 101 and the cap 302. This design provides an activity path for the automatic pressure relief function, ensuring the realization of the pressure relief function.

[0038] Please see the appendix Figure 4 As shown.

[0039] The inner surface of the crucible body 1 is provided with a zirconia high-temperature resistant layer 104, and the outer surface of the crucible body 1 is provided with a boron nitride thermal shock resistant layer 102. An aerogel insulation layer 103 is sandwiched between the zirconia high-temperature resistant layer 104 and the boron nitride thermal shock resistant layer 102. The zirconia high-temperature resistant layer 104 can withstand extremely high temperatures, the boron nitride thermal shock resistant layer 102 can effectively resist thermal shock, and the aerogel insulation layer 103 has excellent thermal insulation performance. The three work together to give the crucible body 1 good stability and service life in high-temperature environments.

[0040] In use, the crucible lid 3 is secured to the crucible body 1 by the fixing ring 2. The fixing ring 2 provides stable support and positioning for the crucible lid 3, ensuring that the crucible lid 3 fits tightly against the crucible body 1 to form a good sealing environment. It ensures that the lid opening 302 is aligned with the gate 101 and is located within the gap 204 of the fixing ring 2. The sphere 303 is located between the lid opening 302 and the gate 101, which plays a sealing role and prevents hot gas from escaping from between the lid opening 302 and the gate 101. It is confirmed that the driven rod 305 is located in the placement groove 202 and can slide freely in the guide groove 203. The pressure relief port 304 is staggered with the groove 201 to provide a channel for the release of hot gas and pressure.

[0041] During the heating process, the material is placed inside the crucible body 1, and the crucible is heated by an external heating device. The zirconia high-temperature resistant layer 104 of the crucible body 1 can withstand extremely high temperatures, ensuring a stable high-temperature environment inside the crucible. Through the observation window 301 on the crucible lid 3, the user can directly observe the state of the high-temperature material inside the crucible without opening the crucible lid 3, thus avoiding heat loss and the entry of external impurities. The sphere 303 acts as a seal between the lid opening 302 and the gate 101, reducing the dissipation of hot gas, maintaining a stable temperature inside the crucible, and improving energy utilization efficiency. As the heating process proceeds, the pressure inside the crucible gradually increases. When the pressure reaches a certain value, the driven rod 305 slides upward along the guide groove 203 under the thrust of the hot gas. When the internal pressure is large enough, the upward force breaks through the arc surface 205 at the connection between the guide groove 203 and the placement groove 202, causing the driven rod 305 to... As the crucible lid 3 enters the guide groove 203, it rises accordingly. After the lid 3 rises, the pressure relief port 304 aligns with the groove 201, allowing hot gas and excess pressure to escape through the pressure relief port 304 and the groove 201. This prevents the crucible from cracking or being damaged due to excessive pressure. The arc-shaped surface 205 ensures that the upward force can only break through the arc-shaped surface 205 and enter the guide groove 203 when the internal pressure of the crucible reaches a specific value, thus achieving automatic pressure relief. This design avoids excessive heat loss due to frequent pressure relief, which could affect the reaction environment inside the crucible. By reducing unnecessary heat loss, it helps maintain stable temperature and pressure inside the crucible, thereby improving energy utilization efficiency and the processing efficiency of high-temperature materials. When the internal pressure drops to a safe range, the driven rod 305 slides back to the placement groove 202 along the guide groove 203 under the weight of the lid 3, and the lid 3 resets, resealing the crucible body 1.

Claims

1. A high temperature resistant ceramic crucible comprising a crucible body (1) and a crucible lid (3), characterized in that: The fixed ring (2) is fixedly sleeved on the outer side surface of the crucible body (1) and close to the upper end position, and the crucible cover (3) is clamped and installed in the fixed ring (2). The fixed ring (2) is fixedly sleeved on the outer side surface of the crucible body (1) and close to the upper end position, and the crucible cover (3) is clamped and installed in the fixed ring (2). The fixed ring (2) is fixedly sleeved on the outer side surface of the crucible body (1) and close to the upper end position, and the crucible cover (3) is clamped and installed in the fixed ring (2).

2. The high temperature resistant ceramic crucible according to claim 1, wherein: The relief port (304) is located between the grooves (201), and the relief port (304) and the grooves (201) are staggered.

3. The high temperature resistant ceramic crucible according to claim 1, wherein: The guide groove (203) is designed as an upward circular arc, and an arc surface (205) is arranged at the connection between the guide groove (203) and the placing groove (202).

4. The high temperature resistant ceramic crucible according to claim 1, wherein: The driven rod (305) is located in the placing groove (202) and slides in the guide groove (203).

5. The high temperature resistant ceramic crucible according to claim 1, wherein: The driven rod (305) is located in the placing groove (202) and slides in the guide groove (203).

6. The high temperature resistant ceramic crucible according to claim 1, wherein: The driven rod (305) is located in the placing groove (202) and slides in the guide groove (203).

7. The high temperature resistant ceramic crucible according to claim 1, wherein: The pouring gate (101) and the cover opening (302) are located in the gap (204), and the width of the gap (204) is greater than the width of the pouring gate (101) and the cover opening (302).

8. The high temperature resistant ceramic crucible according to claim 1, wherein: The crucible cover (3) is fixedly installed on the front surface and close to the lower end position, and the cover opening (302) is fixedly installed on the front end. The pouring gate (101) and the cover opening (302) are located in the gap (204), and the width of the gap (204) is greater than the width of the pouring gate (101) and the cover opening (302). The crucible cover (3) is fixedly installed on the front surface and close to the lower end position, and the cover opening (302) is fixedly installed on the front end. The pouring gate (101) and the cover opening (302) are located in the gap (204), and the width of the gap (204) is greater than the width of the pouring gate (101) and the cover opening (302). The crucible cover (3) is fixedly installed on the front surface and close to the lower end position, and the cover opening (302) is fixedly installed on the front end. The pouring gate (101) and the cover opening (302) are located in the gap (204), and the width of the gap (204) is greater than the width of the pouring gate (101) and the cover opening (302).

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