Ceramic crucible with hollow structure

Abstract

The utility model relates to the technical field of ceramic crucibles, in particular to a ceramic crucible with a hollow structure, which comprises a crucible bottom plate and a crucible wall arranged along the periphery of the crucible bottom plate, the crucible wall is a net-shaped body with meshes; a plurality of longitudinal grooves which are parallel to one another and a plurality of transverse grooves which are parallel to one another are formed in the bottom of the crucible bottom plate, and through holes are formed in the joints of the longitudinal grooves and the transverse grooves. The crucible can effectively solve the problem that a sintered part in the crucible is heated unevenly, the sintering yield of the sintered part is effectively improved, the crucible can be widely applied to the material sintering fields of powder metallurgy, semiconductors, batteries, dentistry and the like, and the yield of sintered materials is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ceramic crucibles, in particular to a ceramic crucible with a hollow structure. Background Art

[0002] A crucible is an important component of chemical instruments. It is a container for melting and refining molten metal liquids as well as heating and reacting solid-liquid substances, and it is the basis for ensuring the smooth progress of chemical reactions. Traditional crucibles have an integral structure, and the bottom of the crucible is made of solid refractory materials. Although it provides good load-bearing capacity, during the heating process, due to the different heat conduction coefficients between the crucible wall and the air, the temperature at the contact part between the sample and the crucible is often very different from the sintered sample part exposed to the air, resulting in uneven heating of the sample. The temperature gradient during the heating and cooling processes will cause a series of problems, such as cracking, deformation, warping, etc., affecting the yield and success rate during the sintering process. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art. The utility model provides a ceramic crucible with a hollow structure, which can make the sintered parts placed inside be heated evenly as a whole, and solve the problems of cracking and deformation of ceramic parts caused by uneven heating.

[0004] To solve the above problems, the utility model proposes a ceramic crucible with a hollow structure, including a crucible bottom plate and a crucible wall arranged along the outer periphery of the crucible bottom plate;

[0005] The crucible wall is a mesh body with mesh holes;

[0006] A plurality of longitudinally parallel grooves and a plurality of transversely parallel grooves are provided at the bottom of the crucible bottom plate, and through holes are provided at the intersections of the longitudinally parallel grooves and the transversely parallel grooves.

[0007] As an improvement of the above technical solution, the non-grooved part at the bottom of the crucible bottom plate is a support part, and a receiving groove is provided at the position corresponding to the support part at the top of the crucible bottom plate, and the receiving groove communicates with the adjacent through holes.

[0008] As an improvement of the above technical solution, a notch is provided at the top of the inner wall of the receiving groove, and the receiving groove communicates with the adjacent through holes through the notch.

[0009] As an improvement of the above technical solution, the distance between two adjacent longitudinally parallel grooves is the same as the distance between two adjacent transversely parallel grooves, and the width of the through hole is greater than the distance between two adjacent longitudinally parallel grooves.

[0010] As an improvement of the above technical solution, the cross-sections of the longitudinally parallel grooves and the transversely parallel grooves are V-shaped structures.

[0011] As an improvement of the above technical solution, the structure of the mesh holes is a diamond structure.

[0012] As an improvement of the above technical solution, a plurality of wavy spacer bars with a predetermined spacing are provided on the outer side wall of the crucible wall in the vertical direction, and the convex portions of the wavy spacer bars are connected to the ends of the mesh holes.

[0013] As an improvement of the above technical solution, the ceramic crucible is made of a photocurable ceramic slurry.

[0014] As an improvement of the above technical solution, the ceramic crucible is of an integrally formed structure.

[0015] Implementing the present utility model has the following beneficial effects:

[0016] At the bottom of the crucible bottom plate of the present utility model, a plurality of parallel longitudinal grooves and a plurality of mutually parallel transverse grooves are provided, and through holes are provided at the intersections of the longitudinal grooves and the transverse grooves. This enables a certain spacing to be formed between the sintered part sample placed on the crucible bottom plate and the bottom of the sintering furnace, and the air heated at the bottom of the sintering furnace can flow in the longitudinal grooves and the transverse grooves, and can flow from the through holes at the intersections to the top of the sintered sample. Secondly, a crucible wall is provided along the outer periphery of the crucible bottom plate, and the crucible wall is a mesh body with mesh holes, enabling the space inside the crucible to communicate with the space inside the sintering furnace, so that the hot air heated at the bottom of the sintering furnace can smoothly flow to all spaces of the crucible and the sintering furnace, making the temperature difference of the air at each part of the sintered sample small, thereby ensuring uniform sintering temperature of the sintered sample. Description of the Drawings

[0017] Figure 1 is a perspective view of a ceramic crucible according to an embodiment of the present utility model;

[0018] Figure 2 is Figure 1 an enlarged view of part A in

[0019] Figure 3 is a perspective view of another angle of a ceramic crucible according to an embodiment of the present utility model. Detailed Embodiments

[0020] To make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0021] See Figures 1 to 3 shown, an embodiment of the present utility model provides a ceramic crucible with a hollow structure, including a crucible bottom plate 1 and a crucible wall 2 provided along the outer periphery of the crucible bottom plate 1.

[0022] The embodiment of the utility model improves the inner wall and bottom plate structure of the crucible, and enables hot air to flow and exchange between the crucible and the sintering furnace through the hollow structure, thereby ensuring that the heating temperature of the sintered part is uniform.

[0023] Specifically, the crucible wall 2 is a mesh body 21 with mesh holes;

[0024] The bottom of the crucible bottom plate 1 is provided with a plurality of mutually parallel longitudinal grooves 11 and a plurality of mutually parallel transverse grooves 12 , and a through hole 13 is provided at the intersection of the longitudinal grooves 11 and the transverse grooves 12 .

[0025] The bottom of the crucible bottom plate 1 of the utility model is provided with a plurality of longitudinal grooves 11 parallel to each other and a plurality of transverse grooves 12 parallel to each other, and a through hole 13 is provided at the intersection of the longitudinal grooves 11 and the transverse grooves 12. This allows a certain distance between the sintered sample placed on the crucible bottom plate 1 and the bottom of the sintering furnace, and the air heated at the bottom of the sintering furnace can flow in the longitudinal grooves 11 and the transverse grooves 12, and can flow from the through holes 13 at the intersection to the top of the sintered sample. Secondly, a crucible wall 2 is provided along the outer periphery of the crucible bottom plate 1, and the crucible wall 2 is a mesh body with mesh holes 21, so that the space in the crucible can be connected with the space in the sintering furnace, so that the hot air heated at the bottom of the sintering furnace can flow smoothly to various spaces of the crucible and the sintering furnace, so that the air temperature difference of each part of the sintered sample is small, thereby ensuring the uniform sintering temperature of the sintered sample.

[0026] Preferably, see Figure 2 and Figure 3 As shown, the non-groove portion of the bottom of the crucible bottom plate 1 is a support portion 14, and a receiving groove 15 is provided at the top of the crucible bottom plate 1 at a position corresponding to the support portion 14, and the receiving groove 15 is connected to the adjacent through hole 13. Since the top of the crucible bottom plate 1 is in direct contact with the bottom of the sintered sample, and the receiving groove 15 is provided at the top of the crucible bottom plate 1 at a position corresponding to the support portion 14, the sintered sample and the bottom of the sintering furnace have a predetermined distance, so that the heat received by the crucible bottom plate 1 cannot be directly transferred to the sintered sample. The heating of the sintered sample can only be achieved by the air heated at the bottom of the sintering furnace flowing into the crucible from the through hole 13 and the mesh 21, thereby ensuring that the temperature difference at various locations of the sintered sample is small or even no difference.

[0027] More preferably, a notch 151 is provided at the top of the inner wall of the accommodating groove 15, and the accommodating groove 15 is connected with the adjacent through hole 13 through the notch 151. The notch 151 is provided at the inner top of the accommodating groove 15, so that the hot air at the through hole 13 can flow from the notch 151 into the accommodating groove 15, and then flow from the accommodating groove 15 to the outer side wall of the sintered sample, thereby improving the heat transfer efficiency inside the crucible.

[0028] Preferably, the cross-sections of the longitudinal grooves 11 and the transverse grooves 12 are V-shaped structures. Since the cross-sections of the above-mentioned grooves are V-shaped structures, the structural strength at the bottoms of the longitudinal grooves 11 and the transverse grooves 12 is effectively improved, enabling the crucible to hold sintered samples with greater mass.

[0029] Preferably, the structure of the mesh holes 21 is a rhombic structure. More preferably, a plurality of wavy spacer bars 22 with a predetermined spacing are provided on the outer side wall of the crucible wall in the vertical direction, and the protruding portions of the wavy spacer bars 22 are connected to the ends of the mesh holes 21. By providing the wavy spacer bars 22, firstly, the structural strength of the crucible wall 2 can be enhanced; secondly, since the wavy spacer bars 22 are provided, hot air can flow along the outer wall of the crucible, thereby making the heat transfer between the heat inside the crucible and the outside more efficient.

[0030] Preferably, the ceramic crucible is made of a photocurable ceramic slurry. The ceramic crucible in the embodiment of the present invention is an integrally formed structure made by using a photocurable ceramic slurry as a raw material and printing with a 3D photocuring printer.

[0031] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A ceramic crucible with a hollow structure, characterized in that: It comprises a crucible bottom plate and a crucible wall arranged along the outer periphery of the crucible bottom plate; The crucible wall is a mesh body with mesh holes; The bottom of the crucible bottom plate is provided with a plurality of mutually parallel longitudinal grooves and a plurality of mutually parallel transverse grooves, and a through hole is provided at the intersection of the longitudinal grooves and the transverse grooves.

2. The ceramic crucible according to claim 1, characterized in that: The non-groove portion of the bottom of the crucible bottom plate is a support portion, and a receiving groove is provided at a position of the top of the crucible bottom plate corresponding to the support portion, and the receiving groove is communicated with the adjacent through hole.

3. The ceramic crucible according to claim 2, characterized in that: A notch is provided at the top of the inner wall of the accommodating groove, and the accommodating groove is communicated with the adjacent through hole through the notch.

4. The ceramic crucible according to claim 3, characterized in that: The distance between two adjacent longitudinal grooves is consistent with the distance between two adjacent transverse grooves, and the width of the through hole is greater than the distance between two adjacent longitudinal grooves.

5. The ceramic crucible according to claim 3, characterized in that: The cross-sections of the longitudinal groove and the transverse groove are V-shaped structures.

6. The ceramic crucible according to claim 1, characterized in that: The mesh structure is a diamond structure.

7. The ceramic crucible according to claim 6, characterized in that: The outer side wall of the crucible wall is provided with a plurality of wavy spacer bars with a predetermined interval in the vertical direction, and the convex parts of the wavy spacer bars are connected to the ends of the meshes.

8. The ceramic crucible according to any one of claims 1 to 7, characterized in that: The ceramic crucible is made of light-cured ceramic slurry.

9. The ceramic crucible according to any one of claims 1 to 7, characterized in that: The ceramic crucible is an integrally formed structure.

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