Split crucible

Abstract

The utility model relates to a crucible, especially a split type crucible, which comprises a containing groove and a height increasing piece. The containing groove is configured as a box-like structure with an open top, and the height increasing piece is configured as a barrel with open ends, having opposite connecting ends and an inlet end. The connecting end of the height increasing piece is connected to the opening of the containing groove, and its inner wall is matched with the side inner wall of the containing groove. When heating, the containing groove is placed in a vacuum furnace, the height increasing piece is positioned and installed above the containing groove, and then the material to be processed is added. When cooling, since most of the material has been consumed, the total amount of the remaining material is small, and the middle part protrudes when the material solidifies and expands, so the edge is connected to the lower position of the crucible. Therefore, the solidified material does not contact the height increasing piece, the height increasing piece is not affected by the stress generated by the material expansion, and can continue to be used. Only the containing groove needs to be discarded, which helps to reduce the production cost.

Description

Technical Field

[0001] This utility model relates to crucibles, and more particularly to a split-type crucible. Background Technology

[0002] When materials are heated and melted, their volume changes to varying degrees before and after melting due to the material's inherent properties. Some materials decrease in volume after melting but expand upon cooling and solidification; these materials are called "aqueous substances." When melting aqueous substances with a high coefficient of expansion and which are solid at room temperature using a crucible in a vacuum furnace, the subsequent cooling and solidification of the molten material generates lateral stresses. This stress severely compresses the crucible, leading to material fatigue and a decrease in strength.

[0003] Currently, crucibles used to hold this type of material are discarded to prevent them from cracking during heating and causing safety issues. However, when melting and cooling materials with high melting points, such as titanium dioxide, molybdenum crucibles are required. Molybdenum crucibles are expensive, which makes controlling production costs difficult. Utility Model Content

[0004] The purpose of this invention is to provide a split-type crucible that helps reduce production costs.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A split crucible includes a receiving groove and a lifting member. The receiving groove is a box-shaped structure with an open top, and the lifting member is a barrel-shaped structure with open ends, having a connecting end and an inlet end. The connecting end of the lifting member is connected to the opening of the receiving groove, and its inner wall fits into the inner side wall of the receiving groove.

[0007] Optionally, the connecting end of the heightening member is sleeved inside the opening of the receiving groove, and a through-hole-shaped lifting hole is provided near the opening of the receiving groove. When the heightening member is supported on the receiving groove, the lifting hole is completely covered by the heightening member.

[0008] Optionally, the outer wall of the heightening member protrudes near the connecting end to form an annular support ring, the diameter of which is larger than the diameter of the opening of the receiving groove, so as to support the heightening member in the receiving groove.

[0009] Optionally, the ratio of the axial height of the height-increasing member to the total height of the height-increasing member when it is installed in the receiving groove is any value in the range of 1:(2 to 2.5).

[0010] Optionally, the sidewall of the receiving groove is inclined outward from its bottom surface to its opening, with an inclination angle of any value between 0.5° and 3°.

[0011] Optionally, the split crucible further includes a heat-insulating cover on the heightening member. The heat-insulating cover includes a cover plate, an exhaust port, and an annular portion. The cover plate is plate-shaped. The exhaust port passes through the middle of the cover plate and is used to connect the two sides of the cover plate. The edge of the cover plate extends toward the receiving groove to form an annular portion fitted onto the inlet end of the heightening member.

[0012] Optionally, the inner wall diameter of the annular portion of the heat-insulating cover is larger than the outer wall diameter of the inlet end of the heightening member.

[0013] Optionally, the exhaust port is constructed as a barrel shape with openings at both ends, with one end near the riser flush with the cover plate.

[0014] The beneficial effects of this invention are as follows: After placing the receiving tank in the vacuum furnace, the lifting component is positioned and installed above the receiving tank, and then the material to be processed is added. After the material melts, its volume decreases, allowing the liquid material to be completely contained within the receiving tank and separated from the lifting component. After the material is used up, a cooling process is performed to allow the material to re-solidify and expand in volume. Since most of the material has been consumed, the remaining material is relatively small, and the central part of the material bulges during expansion, with the edge connecting to the crucible at a low position. This prevents the solidified material from contacting the lifting component, thus protecting the lifting component from the stress generated by the material expansion. Therefore, the material can continue to be used, and only the receiving tank needs to be discarded, which helps reduce production costs.

[0015] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a perspective view of the split-type crucible shown in Embodiment 1 of this utility model;

[0017] Figure 2 This is a side view of the split crucible shown in Embodiment 1 of this utility model.

[0018] Legend: 1-accommodating groove, 11-lifting hole, 12-step section, 2-elevating component, 21-connecting end, 211-support ring, 22-inlet end, 221-thickened section, 3-insulation cover, 31-cover plate, 32-vent, 33-ring section. Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0023] This utility model application protects a split crucible, including a receiving groove 1 and a lifting member 2. The receiving groove 1 is a box-shaped structure with an open top, and the lifting member 2 is a barrel-shaped structure with open ends, having a connecting end 21 and an inlet end 22. The connecting end 21 of the lifting member 2 is connected to the opening of the receiving groove 1, and its inner wall is fitted to the inner wall of the side of the receiving groove 1.

[0024] After placing the receiving tank 1 in the vacuum furnace, the lifting member 2 is positioned and installed above the receiving tank 1, and then the material to be processed is added. After the material melts, its volume decreases, completely containing the liquid material within the receiving tank 1 and separating it from the lifting member 2. After the material is used up, a cooling process is performed to allow the remaining material to re-solidify and expand in volume. Since most of the material has been consumed, the total amount of remaining material is small, and the expansion causes the center to bulge, with the edges connecting to the crucible at a low position. This prevents the solidified material from contacting the lifting member 2, thus protecting the lifting member 2 from the stress generated by the material expansion. Therefore, it can continue to be used; only the receiving tank 1 needs to be discarded, reducing the material cost of the disposable crucible and helping to lower production costs.

[0025] In some embodiments, the connecting end 21 of the lifting member 2 is sleeved inside the opening of the receiving groove 1. A through-hole-shaped lifting hole 11 is provided near the opening of the receiving groove 1. When the lifting member 2 is supported on the receiving groove 1, the lifting hole 11 is completely covered by the lifting member 2. By providing the lifting hole 11, it is convenient to place the receiving groove 1 inside the vacuum furnace. Sleeving the connecting end 21 of the lifting member 2 inside the opening of the receiving groove 1 allows the lifting member 2 to cover part of the inner wall of the opening of the receiving groove 1 from the inside. The lifting port is located near the opening of the receiving groove 1 and is completely covered by the lifting member 2, preventing material in the crucible from leaking from the lifting port and preventing liquid material from remaining at the lifting port, thus facilitating the disassembly of the receiving groove 1 and the lifting member 2.

[0026] In some embodiments, the outer wall of the riser 2 adjacent to the connecting end 21 protrudes to form an annular support ring 211. The diameter of the support ring 211 is larger than the diameter of the opening of the receiving groove 1, which is used to support the riser 2 in the receiving groove 1. Supporting the riser 2 with the support ring 211 helps to improve the accuracy of the installation position of the riser 2.

[0027] In some embodiments, the ratio of the axial height of the riser 2 to its total height when installed in the receiving groove 1 is any value in the range of 1:(2 to 2.5), for example, (1:2), (1:

[0028] Any one of the following values: (2.1), (1:2.2), (1:2.3), (1:2.4), and (1:2.5). By constraining the proportion of the height of the riser 2 to the total height, the amount of raw material used in the single-use accommodating component can be reduced while ensuring that the riser 2 is not affected by material expansion, thereby reducing costs.

[0029] In some embodiments, the sidewall of the receiving tank 1 is inclined outward from its bottom surface to its opening, with an inclination angle of any value between 0.5° and 3°, for example, any value among 0.5°, 1°, 1.5°, 2°, 2.5°, and 3°. Inclining the sidewall of the receiving tank 1 facilitates the accumulation of molten material at the bottom of the receiving tank 1 and facilitates the installation of the lifting member 2. Maintaining a small inclination angle helps to increase the volume of the receiving tank 1 and the total volume of the crucible.

[0030] In some embodiments, the split crucible further includes a heat-insulating cover 3 covering the raising member 2. The heat-insulating cover 3 includes a cover plate 31, an exhaust port 32, and an annular portion 33. The cover plate 31 is plate-shaped, and the exhaust port 32 penetrates through the middle of the cover plate 31 to connect the two sides of the cover plate 31. The edge of the cover plate 31 extends toward the receiving groove 1 to form an annular portion 33 fitted onto the inlet end 22 of the raising member 2. Providing a heat-insulating cover 3 with an exhaust port 32 helps to improve heating efficiency and does not hinder the escape of gas.

[0031] In some embodiments, the inner diameter of the annular portion 33 of the insulation cover 3 is larger than the outer diameter of the inlet end 22 of the riser 2. The connection between the insulation cover 3 and the riser 2 is relatively loose, which facilitates the escape of gas.

[0032] In some embodiments, the exhaust port 32 is constructed as a barrel shape with openings at both ends, with one end near the riser 2 flush with the cover plate 31. The exhaust port 32 directs the gas exhaust upwards, facilitating the removal of gas from the vacuum furnace and preventing the exhaust gas from affecting the furnace environment or even causing side reactions.

[0033] Please refer to the following examples for details.

[0034] Example 1:

[0035] Please see Figure 1 and Figure 2 The preferred embodiment of this application shows a split crucible, which includes a receiving groove 1, a lifting member 2, and a heat-insulating cover 3. The bottom of the lifting member 2, which has openings at both ends, is fitted onto the top opening of the receiving groove 1, and the heat-insulating cover 3 is placed on top of the lifting member 2. The three parts are detachably connected to form a complete crucible.

[0036] The receiving groove 1 has an overall frustum-shaped box structure, with its diameter increasing from bottom to top. The top of the receiving groove 1 is open, and the sidewall inclination angle is 1°. The bottom and sidewall thickness of the receiving groove 1 are both 1 mm, and the total height is 305 mm. The inner wall diameter at the opening of the receiving groove 1 is 282.7 mm, and its outer wall expands outward to form a stepped portion 12. The stepped portion 12 has a thickness of 1.7 mm and a height of 5 mm. Two radially opposite lifting holes 11 are formed below the stepped portion 12, tangent to the stepped portion 12, and have a diameter of 13 mm.

[0037] The extender 2 is a cylindrical structure open at both ends, with its sidewalls parallel to its axial direction. Its axial length is 220 mm, and its outer diameter is 282 mm. The two opposite ends of the extender 2 are a connecting end 21 and an inlet end 22, respectively. A circular support ring 211 protrudes from the outer wall near the connecting end 21. The support ring 211 has a height of 3 mm along its axial direction and is 20 mm away from the connecting end 21 of the extender 2. The outer wall of the inlet end 22 of the extender 2 expands outwards, forming a circular thickened portion 221 with an outer edge diameter of 284 mm.

[0038] The heat-insulating cover 3 includes a cover plate 31, an exhaust port 32, and an annular portion 33. The cover plate 31 is a circular plate with a diameter of 290 mm and a thickness of 1 mm. The exhaust port 32 is a cylindrical structure coaxial with the cover plate 31, with an inner wall diameter of 60 mm and a wall thickness of 1 mm. It penetrates the cover plate 31 vertically, with one end flush with the surface of the cover plate 31, thereby connecting the two sides of the cover plate 31. The edge of the cover plate 31 extends vertically away from the exhaust port 32, forming an annular portion 33 with a thickness of 1 mm and an axial length of 4 mm.

[0039] When heating in a vacuum furnace using a split-type crucible, first place the receiving tank 1 in the heating chamber of the vacuum furnace with the opening facing upwards through the lifting hole 11. After fixing the receiving tank 1 to ensure its bottom surface is horizontal, fit the elevating member 2 into the opening of the receiving tank 1 with the connecting end 21 facing downwards. At this time, the annular part 33 of the elevating member 2 is supported by the stepped part 12 of the receiving tank 1, thus ensuring the stability of the elevating member 2 and ensuring its setting direction is vertical. At this time, the inner side of the lifting port is completely covered by the elevating member 2. Since the receiving tank 1 and the elevating member 2 are connected by a simple fitting method, they are easy to disassemble. Add the material to be melted into the receiving tank 1 and the elevating member 2, and the total volume of the material is greater than the volume of the receiving tank 1. After the material is added, place the heat insulation cover 3 on the inlet end 22 of the elevating member 2. Since the diameter of the heat insulation cover 3 is large, there is a gap between the heat insulation cover 3 and the elevating member 2, which is easy to disassemble. During the heating and melting process, a large amount of gas generated by the material is discharged from the separate crucible through the exhaust port 32 and guided outside the heating chamber. After the material melts and is used, the liquid material accumulates in the receiving tank 1. After cooling and expansion, the material does not come into contact with the lifting component 2 or the heat insulation cover 3. The receiving tank 1 is a disposable item and cannot be reheated due to the stress generated during the material expansion to prevent safety issues. Although the lifting component 2 and the heat insulation cover 3 are heated, they are not subjected to radial outward stress during the material expansion process. Therefore, they can be reused after disassembly, which helps to reduce costs.

[0040] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A split-type crucible, characterized in that, It includes a receiving groove (1) and a heightening member (2). The receiving groove (1) is a box-shaped structure with an open top. The heightening member (2) is a barrel-shaped structure with open ends, having a connecting end (21) and an inlet end (22) opposite to each other. The connecting end (21) of the heightening member (2) is connected to the opening of the receiving groove (1), and its inner wall is fitted to the inner side wall of the receiving groove (1).

2. The split-type crucible as described in claim 1, characterized in that, The connecting end (21) of the heightening member (2) is sleeved on the inner side of the opening of the receiving groove (1). The receiving groove (1) is provided with a through hole-shaped lifting hole (11) near the opening. When the heightening member (2) is supported on the receiving groove (1), the lifting hole (11) is completely covered by the heightening member (2).

3. The split-type crucible as described in claim 2, characterized in that, The heightening member (2) has a circular support ring (211) protruding from the outer wall of the connecting end (21). The diameter of the support ring (211) is larger than the diameter of the opening of the receiving groove (1), so that the heightening member (2) is supported on the receiving groove (1).

4. The split-type crucible as described in claim 2, characterized in that, The ratio of the axial height of the height-increasing member (2) to the total height of the height-increasing member (2) when it is installed in the receiving groove (1) is 1: Any value from (2 to 2.5).

5. The split-type crucible as described in claim 1, characterized in that, The sidewall of the receiving groove (1) is inclined outward from its bottom surface to its opening, with an inclination angle of any value between 0.5° and 3°.

6. The split-type crucible as described in claim 1, characterized in that, It also includes a heat-insulating cover (3) covering the heightening member (2). The heat-insulating cover (3) includes a cover plate (31), an exhaust port (32) and an annular portion (33). The cover plate (31) is plate-shaped. The exhaust port (32) passes through the middle of the cover plate (31) and is used to connect the two sides of the cover plate (31). The edge of the cover plate (31) extends toward the receiving groove (1) to form an annular portion (33) fitted onto the inlet end (22) of the heightening member (2).

7. The split-type crucible as described in claim 6, characterized in that, The inner diameter of the annular portion (33) of the heat insulation cover (3) is greater than the outer diameter of the inlet end (22) of the heightening member (2).

8. The split-type crucible as described in claim 6, characterized in that, The exhaust port (32) is constructed as a barrel with openings at both ends, and one end of it near the riser (2) is flush with the cover plate (31).

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