CN216205226U

CN216205226U - Crucible and melting equipment

Info

Publication number: CN216205226U
Application number: CN202122433097.3U
Authority: CN
Inventors: 卢毅; 刘萧松; 李克强; 邹明
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2021-10-09
Filing date: 2021-10-09
Publication date: 2022-04-05
Anticipated expiration: 2031-10-09

Abstract

The application provides a crucible and melting equipment, the crucible includes first head and second head, has seted up first groove on the first head, has seted up the second groove on the second head, first head and second head interconnect, first groove and second groove intercommunication enclose into the bar jointly and accept the chamber. Because the crucible includes first head and the second head of concatenation each other, and first groove and second groove intercommunication form the bar jointly and accept the chamber, so, the crucible that forms by the combination of first head and second head has obvious advantage in the specification in comparison with integrated into one piece's crucible, through the concatenation combination design in this scheme, can make bigger-size crucible under the limited prerequisite of preparation equipment specification. Therefore, the crucible and the melting equipment provided by the application can solve the problems that in the prior art, the crucible is small in size and cannot be used for preparing a large-size crucible.

Description

Crucible and melting equipment

[ technical field ] A method for producing a semiconductor device

The utility model relates to the technical field of heating devices, in particular to a crucible and melting equipment.

[ background of the utility model ]

In the prior art, no matter evaporation equipment, magnetron sputtering equipment or metal smelting equipment, a crucible is used for containing molten solids. However, as the volumes of evaporation equipment, magnetron sputtering equipment and metal melting equipment are further increased, higher requirements are also placed on the volume and the width of a crucible. The existing crucible is usually manufactured by integrally forming preparation equipment, and is limited by the volume of the preparation equipment, the volume increase of the integrated crucible meets the bottleneck, and the specification of the crucible cannot meet the requirement.

Therefore, how to prepare a large-sized crucible becomes a problem to be solved urgently.

[ Utility model ] content

In view of this, the present application provides a crucible, which is used to solve the problem that in the prior art, the crucible is small in size and cannot be used for preparing a large-size crucible.

The application provides a crucible, the crucible includes: the first end enclosure and the second end enclosure, wherein a first groove is formed in the first end enclosure. The second seal head is provided with a second groove. First head and second head interconnect, first groove and second groove intercommunication enclose into the bar jointly and accept the chamber.

In the above scheme, the concatenation combination of first head and second head has formed the crucible, and the cavity is acceptd to first groove and second groove intercommunication formation bar, so, the crucible that is formed by the combination of first head and second head has the advantage in the specification in comparison with integrated into one piece's crucible. By the splicing combination design in the scheme, a larger crucible can be manufactured on the premise that the specification of the preparation equipment is limited.

In a possible design, the crucible further comprises at least one middle section, the first seal head is connected with the second seal head through the middle section, a third groove is formed in the middle section, and the first groove, the second groove and the third groove are communicated with each other.

In the scheme, the middle sections are additionally arranged, so that the crucibles can be assembled with different numbers of middle sections according to requirements, the requirements of different specifications are met, and the universality of the crucibles is improved. The middle section which can be replaced randomly is convenient for the crucible to replace the damaged middle section, the service life of the whole crucible is prolonged, and the use cost of the crucible is saved.

In a possible design, detachable connecting structures are arranged between the first seal head and the middle section, between the two middle sections and between the middle section and the second seal head.

In the scheme, the first seal head, the middle section and the second seal head can be detached at will, so that the first seal head, the middle section and the second seal head can be replaced when any one of the first seal head, the middle section and the second seal head is damaged, and the service life of the whole crucible is prolonged.

In a possible design, the detachable connection structure includes a connection plate and an accommodating groove disposed on an inner surface of the strip-shaped accommodating cavity, and at least a portion of the accommodating groove is located on one side of the first end socket close to the middle section, two ends of the middle section, and one side of the second end socket close to the middle section.

In the above scheme, the accommodating groove is at least partially arranged on the first sealing head, the middle section and the second sealing head, so that the connecting plate can enable all parts of the crucible to be stably connected by inserting the accommodating groove, and therefore, the connection stability among all parts of the crucible and the structural strength of the crucible are improved.

In one possible design, the two ends of the connecting plate are provided with connecting parts, the accommodating groove is internally provided with a connecting hole, and the connecting parts are connected with the connecting hole through fasteners.

In the scheme, the stability of the mutual connection of the parts of the crucible and the structural strength of the crucible are further improved through the connection of the fastening piece and the connecting part.

In one possible design, the fastener is a bolt and the connection is a threaded hole.

In the above scheme, the fastener chooses for use the bolt, and connecting portion are the screw hole, the dismouting of the fastener of not only being convenient for, are favorable to improving the equipment speed of crucible, and are with low costs moreover.

In a possible design, the joint of the first seal head and the middle section, the two ends of the middle section and the joint of the middle section and the second seal head are provided with labyrinth seal splicing structures.

In the scheme, the sealing performance among the first seal head, the middle section and the second seal head is improved by arranging the labyrinth seal splicing structure, so that substances in the strip-shaped sealing cavity are not easy to leak, and the safety of the crucible is improved.

In one possible design, the labyrinth seal splicing structure comprises at least one pair of a convex portion and a concave portion which are mutually embedded.

In the above aspect, the sealing performance is further improved by the mutual fitting between the protrusion portion and the groove portion.

In one possible design, the labyrinth seal split structure further includes an adhesive sealing layer disposed between the protrusion portion and the groove portion.

In the above scheme, the direct sealing performance of the protruding portion and the groove portion is further improved by adhering the sealing layer.

The application also provides a melting apparatus comprising a heating device and the crucible of any of the above, the heating device being for heating a substance in the evaporation crucible. It will be appreciated that the melting apparatus includes any of the crucibles described above and clearly has the advantages of the crucibles described above.

The application provides a crucible, it is formed by first head and the concatenation combination of second head, and the cavity is acceptd to the first groove on the first head and the second groove intercommunication formation bar on the second head.

Therefore, the crucible formed by combining the first end socket and the second end socket has advantages in specification compared with an integrally formed crucible. By the splicing combination design in the scheme, a larger crucible can be manufactured on the premise that the specification of the preparation equipment is limited.

Additional features and advantages of embodiments of the present application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of embodiments of the present application. The objectives and other advantages of the embodiments of the application will be realized and attained by the structure particularly pointed out in the written description and drawings.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

FIG. 1 is a schematic structural diagram of a crucible provided in an embodiment of the present application;

FIG. 2 is a schematic structural diagram of another view angle of a crucible provided in an embodiment of the present application;

fig. 3 is a schematic structural diagram of a first seal head provided in an embodiment of the present application;

fig. 4 is a schematic structural diagram of a second sealing head provided in an embodiment of the present application;

FIG. 5 is a schematic structural diagram of an intermediate section provided in an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a connection plate according to an embodiment of the present disclosure;

fig. 7 is a cross-sectional view of a detachable connection structure between a first seal head and a middle section according to an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of a melting apparatus provided in an embodiment of the present application.

Reference numerals:

100. a crucible;

200. a melting device;

1. a first end enclosure;

11. a first groove;

2. a second end enclosure;

21. a second groove;

3. a middle section;

31. a third groove;

4. a strip-shaped accommodating cavity;

5. a detachable connection structure;

51. a connecting plate;

511. a connecting portion;

52. an accommodating groove;

521. connecting holes;

6. a labyrinth seal splicing structure;

61. a boss portion;

62. a groove part;

63. and bonding the sealing layer.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

[ detailed description ] embodiments

For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.

It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be noted that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.

In view of this, the present application provides a crucible 100, which is formed by splicing and combining a first end enclosure 1 and a second end enclosure 2, wherein a first groove 11 on the first end enclosure 1 is communicated with a second groove 21 on the second end enclosure 2 to form a strip-shaped accommodating cavity 4.

Thus, the crucible 100 formed by combining the first end enclosure 1 and the second end enclosure 2 has an advantage in terms of specification compared to the integrally formed crucible 100. By the splicing combination design in the scheme, a larger crucible 100 can be manufactured on the premise that the specification of the preparation equipment is limited.

The crucible 100 may be placed in an evaporation apparatus, a magnetron sputtering apparatus, a metal melting apparatus, and any apparatus that needs to melt or evaporate a substance.

Specific examples of the structure of the crucible according to the examples of the present application will be described below.

The present application provides a crucible 100, the crucible 100 comprising: first head 1 and second head 2, first groove 11 has been seted up on the first head 1. The second end enclosure 2 is provided with a second groove 21. First head 1 and second head 2 interconnect, first groove 11 and second groove 21 intercommunication enclose into the bar jointly and accept chamber 4.

The crucible 100 is substantially a cuboid, a strip-shaped cavity for containing substances is formed in the cuboid, and the material of the crucible 100 can be ceramic, common graphite, artificial graphite and the like, which is not limited herein.

First head 1 is roughly the cuboid, and its edges and corners can set up the chamfer structure, and the chamfer structure can be fillet or chamfer angle, sets up slottedly on the side of first head 1, and this groove intercommunication first head 1's a side and top surface.

The first groove 11 is arranged on the first seal head 1, and the space formed by the first groove 11 on the first seal head 1 is used as a part of the strip-shaped accommodating cavity 4.

The second head 2 is a square body, the edges and corners of the second head can be provided with chamfer structures, the chamfer structures can be fillets or chamfer angles, the side surface of the second head 2 is provided with a groove, and the groove is communicated with the side surface and the top surface of the first head 1.

The second groove 21 is formed in the second sealing head 2, and a space formed by the second groove 21 in the second sealing head 2 is used as a part of the strip-shaped accommodating cavity 4.

The strip-shaped receiving cavity 4 extends in a certain direction in the crucible 100 as a whole, and the length of the strip-shaped receiving cavity 4 can be adaptively changed according to the length of the crucible 100.

The first end socket 1 and the second end socket 2 are spliced and combined to form the crucible 100, the first groove 11 and the second groove 21 are communicated to form the strip-shaped accommodating cavity 4, and therefore the crucible 100 formed by combining the first end socket 1 and the second end socket 2 has obvious advantages in specification compared with the integrally formed crucible 100. Through the splicing combination design in the scheme, a larger crucible 100 can be manufactured on the premise that the specification of the preparation equipment is limited, when the large crucible 100 is needed, only the preparation equipment is needed to manufacture the first seal head 1 and the second seal head 2 respectively, and then the first seal head 1 and the second seal head 2 are combined to obtain the large crucible 100 with the length being 100 times that of the original crucible. And when one part of the crucible 100 is damaged, the whole crucible 100 does not need to be replaced, and only the first seal head 1 or the second seal head 2 containing the damaged part needs to be replaced correspondingly, so that the intact crucible 100 can be formed, and production materials are saved.

Referring to fig. 1 and 2, in one embodiment, the crucible 100 further includes at least one middle section 3, the first end socket 1 and the second end socket 2 are connected through the middle section 3, the middle section 3 is provided with a third groove 31, and the first groove 11, the second groove 21 and the third groove 31 are communicated with each other.

The middle section 3 is substantially in a U-shaped structure, and the curved surface part of the middle section 3 is used for forming the inner wall of the strip-shaped containing cavity 4 together with other parts of the crucible 100.

The third groove 31 penetrates through two opposite side surfaces of the middle section 3, and the bottom surface of the third groove 31 may be in a circular arc surface structure.

The middle section 3 is additionally arranged in the embodiment, so that the crucible 100 can be assembled with different quantities of middle sections 3 according to requirements, requirements of different specifications are met, and the universality of the crucible 100 is improved. The middle section 3 which can be replaced at will is convenient for the crucible 100 to replace the damaged middle section 3, the service life of the whole crucible 100 is prolonged, and the use cost of the crucible 100 is saved. The specification and the number of the middle sections 3 can be set according to actual requirements, and the crucibles 100 with different lengths can be obtained through the combination of the middle sections 3 with different lengths so as to adapt to equipment with different models.

Referring to fig. 1 and 7, in one embodiment, detachable connection structures 5 are disposed between the first sealing head 1 and the middle section 3, at two ends of the middle section 3, and between the middle section 3 and the second sealing head 2.

The detachable connection structure 5 includes a connection plate 51 having fastening bolts and a receiving groove 52 for receiving the connection plate 51, the receiving groove 52 is provided on an inner surface of the strip-shaped receiving cavity 4, and the connection plate 51 can be fixed in the receiving groove 52 of the crucible 100 by the fastening bolts.

In this embodiment, set up detachable construction and make and dismantle wantonly between first head 1, interlude 3 and the second head 2, consequently, can replace when arbitrary one damages in first head 1, interlude 3 and the second head 2, improved the holistic life-span of crucible 100, practiced thrift crucible 100's use cost. The detachable connection 5 may be: threaded connection, key connection, snap connection, spline connection, snap connection, pin connection, and the like.

Referring to fig. 3, 4, 5 and 7, in one embodiment, the detachable connecting structure 5 includes a connecting plate 51 and a receiving groove 52 disposed on an inner surface of the strip-shaped receiving cavity 4, at least a portion of the receiving groove 52 is located on a side of the first sealing head 1 near the middle section 3, between the two middle sections 3, and on a side of the second sealing head 2 near the middle section 3.

The connecting plate 51 is substantially a square plate-shaped structure, four threaded holes can be formed in the square plate, and the four holes are uniformly distributed on the periphery of the square plate.

The receiving groove 52 may be a square groove adapted to the shape of the connection plate 51. The depth of the square groove is the same as the thickness of the connection plate 51.

The first cap 1, the middle section 3 and the second cap 2 are provided with the receiving grooves 52, and the connection plates 51 inserted into the receiving grooves 52 allow the parts (the first cap 1, the middle section 3 and the second cap 2) of the crucible 100 to be stably connected, thereby improving the stability of connection among the parts of the crucible 100 and the structural strength of the crucible 100. The accommodating groove 52 can be arranged on the inner surface of the strip-shaped accommodating cavity 4, or on the bottom surfaces of the first end enclosure 1, the middle section 3 and the second end enclosure 2, and can also be arranged on the side surface of the first end enclosure 1 connected with the middle section 3, the side surfaces of the two ends of the middle section 3, and the side surface of the second end enclosure 2 connected with the middle section 3. The connecting plate 51 and the receiving groove 52 can be in interference fit or transition fit, and the connecting plate 51 is clamped in the receiving groove 52 through the elasticity of the material, so that all parts of the crucible 100 are relatively fixed. A conventional clamping connection structure may also be provided between the connection plate 51 and the receiving groove 52, and in an optional implementation manner, a clamping groove is provided on the connection plate 51, a flange is provided on the receiving groove 52, or a flange is provided on the connection plate 51, and a clamping groove is provided on the receiving groove 52. From this, through the cooperation of flange and draw-in groove, can be with connecting plate 51 detachably joint in accepting groove 52, simple structure, the connection of being convenient for has promoted the convenience in use.

Referring to fig. 6, in one embodiment, the connecting plate 51 is provided with connecting portions 511 at two ends thereof, a connecting hole 521 is provided in the accommodating groove 52, and the connecting hole 521 is connected with the connecting portions 511 by a fastener.

The connection portion 511 may be a screw hole.

The connection hole 521 may be a circular hole, and the connection hole 521 penetrates from the bottoms of the first sealing head 1, the middle section 3 and the second sealing head 2 to the receiving groove 52 and communicates with the receiving groove 52.

The fastener can be a bolt or a clamping structure member, correspondingly, the connecting portion 511 can be a threaded hole or a clamping groove, the connecting portion 511 can be a through hole or a blind hole, when the connecting portion 511 is the blind hole, one side of the connecting plate 51 departing from the blind hole is smooth, when the accommodating groove 52 is located in the strip-shaped accommodating cavity 4, the connecting plate 51 can be just filled in the accommodating groove 52, so that the strip-shaped accommodating cavity 4 is smooth, and the sealing performance is improved. The stability of the connection between the respective parts of the crucible 100 and the structural strength of the crucible 100 are further improved by the connection of the fastening member with the connection part 511.

In one embodiment, the fasteners are bolts and the connection portions 511 are threaded holes.

It can be understood that the fastener is a bolt, and the connecting portion 511 is a threaded hole, so that the fastener can be conveniently disassembled and assembled, the assembling speed of the crucible 100 can be improved, and the cost is low.

Referring to fig. 3, 4, 5 and 7, in one embodiment, a labyrinth splicing structure 6 is disposed at a connection portion between the first end enclosure 1 and the middle section 3, two ends of the middle section 3, and a connection portion between the middle section 3 and the second end enclosure 2.

The labyrinth seal assembly 6 includes at least one pair of a protrusion 61 and a groove 62 that are engaged with each other, the protrusion 61 and the groove 62 being matched, and the protrusion 61 and the groove 62 extending along the surfaces of the crucible 100 where the parts abut against each other.

The convex part 61 is a strip-shaped bulge extending along the cross section of the strip-shaped accommodating cavity 4, and the cross section of the strip-shaped bulge is square.

The groove portion 62 is a strip-shaped groove extending along the cross-sectional shape of the strip-shaped housing chamber 4, and the shape of the strip-shaped groove matches the shape of the strip-shaped protrusion.

The labyrinth seal (labyrinths seal) is a seal formed by a plurality of zigzag cells between two parts to reduce leakage, and is an ideal labyrinth flow passage model. In some embodiments, several sealing teeth arranged in sequence may be arranged along the contact surface of the part, a series of cut-off gaps and expansion cavities are formed between the teeth, and the sealed medium may generate throttling effect when passing through the gaps of the labyrinth, thereby achieving the purpose of leakage prevention. The sealing performance among the first seal head 1, the middle section 3 and the second seal head 2 is improved by arranging the labyrinth seal splicing structure 6, so that substances in the strip-shaped seal cavity are not easy to leak, and the safety of the crucible 100 is improved.

Referring to fig. 3, 4 and 5, in one embodiment, the labyrinth seal splicing structure 6 includes at least a pair of a protrusion portion 61 and a groove portion 62 which are engaged with each other.

The sealing performance is further improved by the mutual fitting between the boss portion 61 and the groove portion 62.

Referring to fig. 7, in one embodiment, the labyrinth seal splicing structure 6 further includes an adhesive sealing layer 63, and the adhesive sealing layer 63 is disposed between the protruding portion 61 and the groove portion 62.

The bonding sealing layer 63 is obtained by coating a sealant on the surface of the labyrinth seal splicing structure 6 and then curing, the shape of the bonding sealing layer 63 is adapted to the surface of the labyrinth seal splicing structure 6, and the thickness of the bonding sealing layer 63 is the same as that of the gap between the labyrinth seal splicing structure 6.

The bonding sealing layer 63 may be formed by applying sealing glue on the surfaces of the protruding portion 61 and the groove portion 62 and then curing the sealing glue, or may be formed by connecting and fixing the parts (the first sealing head 1, the middle section 3 and the second sealing head 2) of the crucible 100 after the glue is applied, and then waiting for the glue to cure, so that the sealing performance is improved.

Referring to fig. 8, the present application also provides a melting apparatus 200, which includes a heating device for heating the substance in the crucible 100, and the crucible 100 described in any one of the above.

The melting apparatus 200 is substantially cubic as a whole, and the melting apparatus 200 is provided therein with the crucible 100 and a heating apparatus, which may be an electromagnetic induction heating apparatus, a resistance wire heating apparatus, or the like.

Since it comprises the above-described crucible 100, it obviously has the advantages of the above-described crucible 100. It should be noted that the melting device 200 includes any device that is required to melt and evaporate the substance in the crucible 100 by heating, such as: evaporation equipment, vapor deposition equipment, smelting equipment and the like, wherein the heating device can be an electromagnetic induction heating device, a resistance wire heating device, a combustion heating device and the like, and the heating device is not limited herein.

In one embodiment, the melting apparatus 200 is a vacuum induction melting apparatus.

Vacuum induction melting equipment is one of the most widely used equipment in the field of vacuum metallurgy. The alloy and special steel required by missile, rocket, atomic energy equipment and electronic industry are produced by vacuum induction melting equipment in a certain proportion. When the nickel-based, cobalt-based, iron-based and other high-temperature alloys are smelted by adopting a vacuum induction smelting equipment process, the hot working performance and the mechanical performance of the alloy are obviously improved. Stainless steel, heat-resistant steel, ultrahigh-strength steel, tool steel, bearing steel, magnetic materials, elastic alloys, expansion alloys and the like can also be smelted by adopting vacuum induction smelting equipment so as to ensure the performance and quality of the materials.

An example of the structure of the vacuum induction melting apparatus is given below:

the main structure of the vacuum induction melting equipment comprises the following parts: the vacuum induction melting equipment mainly comprises a furnace shell, an inductor, a crucible 100, a furnace tilting mechanism, an ingot mold mechanism, a power supply device, a water cooling system and the like. The crucible 100 may be any one of the crucibles 100 in the above embodiments, the furnace shell may be provided with devices for observation, temperature measurement, charging, sampling, material pounding, etc., and the outside of the furnace body is provided with a vacuum system, a power supply system, a control system, etc.

In addition to the above components, the vacuum melting apparatus should also be equipped with a power supply and control system and a cooling system to provide energy input for melting material in the apparatus and to provide some cooling at critical locations to prevent the system from overheating and causing a reduction in the life of the structure and even damage. The induction melting equipment for specific process requirements also comprises related auxiliary components, such as a transmission skip car, a furnace door, a centrifugal casting tray, an observation window and the like, and a gas filtering system and the like are also required to be arranged for equipment with more impurities. Besides necessary components, the complete induction melting equipment can realize different functions by adding the assistance of other parts according to specific process requirements, thereby providing convenient conditions and implementation modes for the preparation of metals.

The vacuum induction melting equipment has two types of batch type and semi-continuous type, and can be made into a vertical type or a horizontal type.

The important consideration of the structural design of the vacuum induction melting equipment is to avoid vacuum discharge, for which all charged bodies in the furnace shell need to be insulated, and the inductor should have no sharp corners and burrs on the structure.

Vacuum induction melting equipment utilizes the electromagnetic induction principle usually, with induction coil, inside the material was put into an inclosed cavity, takes out the gas in the container through vacuum pumping system, afterwards, utilizes the power to make electric current pass through induction coil, produces induced electromotive force and at the inside vortex that forms of material, and when calorific capacity reachd certain degree, the material just began to melt.

In the melting process, a series of operations such as power control, temperature measurement, vacuum degree measurement, supplementary feeding and the like are realized through other matched components on the equipment, and finally, the crucible 100 is turned over to pour liquid metal into a mold to form a metal ingot, so that smelting is completed.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A crucible, comprising:

the first end socket is provided with a first groove;

the second end enclosure is provided with a second groove;

the first seal head and the second seal head are connected with each other, and the first groove and the second groove are communicated and jointly enclose to form a strip-shaped accommodating cavity.

2. The crucible as claimed in claim 1, further comprising at least one middle section, wherein the first end socket and the second end socket are connected through the middle section, the middle section is provided with a third groove, and the first groove, the second groove and the third groove are communicated with each other.

3. The crucible of claim 2, wherein detachable connection structures are disposed between the first end enclosure and the middle section, between the two middle sections, and between the middle section and the second end enclosure.

4. The crucible as claimed in claim 3, wherein the detachable connection structure comprises a connection plate and a receiving groove disposed on an inner surface of the strip-shaped receiving cavity, and at least a portion of the receiving groove is located on one side of the first end socket close to the middle section, two ends of the middle section, and one side of the second end socket close to the middle section.

5. The crucible as claimed in claim 4, wherein the connecting plates are provided at both ends thereof with connecting portions, the receiving slots are provided with connecting holes therein, and the connecting portions are connected to the connecting holes by fasteners.

6. The crucible of claim 5, wherein the fastener is a bolt and the connection is a threaded hole.

7. The crucible as claimed in any one of claims 1 to 6, wherein a labyrinth splicing structure is arranged at the joint of the first end socket and the middle section, at the two ends of the middle section and at the joint of the middle section and the second end socket.

8. The crucible of claim 7, wherein the labyrinth assembly includes at least one pair of a protrusion and a groove that engage with each other.

9. The crucible of claim 8, wherein the labyrinth splice further comprises an adhesive sealing layer disposed between the raised portion and the recessed portion.

10. A melting apparatus comprising heating means for heating a substance in a crucible as claimed in any one of claims 1 to 9 and the crucible.