A crystal material storage device

Abstract

The present invention relates to the technical field of crystal material storage, and discloses a crystal material storage device, comprising a base, a storage body and a protective cover; the storage body is connected to the upper surface of the base, the storage body has a plurality of storage slots which are recessed inwards and arranged in sequence, one of the storage slots is used to store materials of a certain size, the outer side of the storage body has a plurality of record numbers, and the record numbers correspond to the storage slots one by one; the protective cover is detachably connected to the base; the material is a seed crystal plug; when the present invention is applied to storing seed crystal plugs, it can avoid wasting the effective time of employees and improve the work efficiency of employees, and can also avoid the generation of debris and dust pollution to the PBN crucible in the process of installing the seed crystal plug into the seed crystal cavity, thereby avoiding the occurrence of heteronuclear twins during seed crystal growth, which is beneficial to improving the stability of crystal performance.

Description

Technical Field

[0001] The invention relates to the technical field of crystal material storage, and in particular to a crystal material storage device. Background Art

[0002] At present, the industry mostly uses transparent plastic boxes with grids to store seed crystal plugs; when the PBN crucible is cleaned, the employees of the loading department need to take out the seed crystal plugs from the grids of the transparent plastic box containing the seed crystal plugs and install the seed crystal plugs into the seed crystal cavity of the PBN crucible. The seed crystal plugs installed in the seed crystal cavity need to meet the requirements of not being loose and being able to be exposed to the outside for a certain distance.

[0003] Because of the method of storing seed crystal plugs in the grids of transparent plastic boxes, seed crystal plugs of different sizes are not distinguished, and seed crystal plugs of various sizes are mixed in the same grid. At the same time, because the seed crystal cavity of the PBN crucible has a certain size recorded in the work order; after the seed crystal is filled into the seed crystal cavity of the PBN crucible, the employees need to take out the seed crystal plugs from the grids of the transparent plastic box one by one and try to install them into the seed crystal cavity of the PBN crucible one by one. Until the seed crystal plug of the corresponding size is installed in the corresponding seed crystal cavity, the employees' effective working time is wasted and their work efficiency is reduced. In addition, when trying to install the seed crystal plug, the employees often encounter the situation that the size of the seed crystal plug is too large or too small. This in turn causes the employees to often use a knife to cut the seed crystal plug that cannot be inserted into the seed crystal cavity to the appropriate size and then insert it into the seed crystal cavity. However, the process of cutting the seed crystal plug will produce debris and dust. These debris and dust will cause heteronuclear twins to appear during the seed crystal growth, affecting the stability of the crystal performance.

[0004] Therefore, the device for storing seed crystal plugs in the prior art cannot enable employees to quickly and accurately install seed crystal plugs of corresponding sizes into the corresponding seed crystal cavities of the PBN crucible, which not only wastes employees' effective time and reduces their work efficiency, but also easily contaminates the PBN crucible in the process of installing the seed crystal plugs into the seed crystal cavities, resulting in heteronuclear twins during seed crystal growth, affecting the stability of crystal performance. Summary of the invention

[0005] The object of the present invention is to provide a crystal material storage device, which, when used for storing seed crystal plugs, can not only avoid wasting employees' effective time and improve employees' work efficiency, but also avoid the generation of debris and dust in the process of inserting the seed crystal plug into the seed crystal cavity to contaminate the PBN crucible, thereby avoiding the occurrence of heteronuclear twins during seed crystal growth, which is beneficial to improving the stability of crystal performance.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a crystal material storage device, including a base, a storage body and a protective cover; the storage body is connected to the base, the storage body has a plurality of storage slots which are recessed inward and arranged in sequence, one storage slot is used to store materials of one size, the outer side of the storage body has a plurality of record numbers, and the record numbers correspond one-to-one to the storage slots; the protective cover is detachably connected to the base and can form a sealed cavity with the base, and the storage body is arranged in the sealed cavity.

[0007] Preferably, the material may be a seed crystal plug; the material may also be a seed crystal, that is, the crystal material storage device may also be used to store seed crystals.

[0008] Preferably, one storage slot stores one material; when the material is a seed crystal plug, storing multiple seed crystal plugs in the same storage slot will cause employees to turn over the material when taking the seed crystal plug, which may easily cause friction between the multiple seed crystal plugs and generate dust, and these dusts will contaminate the PBN crucible during the loading process, thereby causing heteronuclear twins to form during seed crystal growth, affecting the stability of crystal performance; therefore, using a storage slot to store one seed crystal plug can avoid heteronuclear twins during seed crystal growth due to foreign matter contamination, which can help improve the stability of crystal performance.

[0009] More preferably, the depth a of the storage slot is 8mm-12mm. The depth a of the storage slot is limited so that the material can be exposed outward by a certain distance when stored in the storage slot, thereby being convenient for employees to access. Specifically, the seed crystal plug can be exposed outward by 12-15mm when stored in the storage slot.

[0010] More preferably, the lateral width b between two adjacent storage slots is ≥18 mm, and the longitudinal width e between two adjacent storage slots is ≥18 mm; this design mainly takes into account that the diameter of a single finger of an employee wearing a PE glove is 13 mm-16 mm. Limiting the lateral width b and longitudinal width e of the storage slot can prevent employees from touching other unnecessary materials around them when taking and placing the materials they need from the storage slot.

[0011] More preferably, the lateral width b of the storage slot is 18mm-25mm, and the longitudinal width e of two adjacent storage slots is 18mm-25mm; adopting this lateral width b and longitudinal width e can prevent employees from touching other unnecessary materials around them when taking and placing the materials they need to use from the storage slots, so that the storage body can have as many storage slots as possible in the smallest possible area.

[0012] Preferably, the record number is a digital record number.

[0013] By using the digital record number, multiple storage slots can be marked using a sequential marking method or a dimension marking method.

[0014] The sequential marking method is to select one of the storage slots as the starting position and mark it as "1", and then mark the other storage slots with subsequent numbers such as "2", "3", "4" in sequence according to a certain rule, and then place multiple materials in the multiple storage slots in sequence according to a certain size rule of the materials and the order of the record numbers.

[0015] The dimension marking method is to directly mark the size of the material stored in the storage slot on the periphery of the storage slot. For example, if the storage slot is used to store materials with a length of 20 mm, "20mm" or "20" is directly marked on the periphery of the storage slot; if the storage slot is used to store materials with a length of 24 mm, "24mm" or "24" is directly marked on the periphery of the storage slot; of course, the digital record number can also be used to represent the diameter or other dimensions of the material.

[0016] Preferably, the storage body has a plurality of storage areas spaced apart from top to bottom, and the storage area is provided with a plurality of the storage slots.

[0017] Preferably, the storage body is hemispherical or cylindrical;

[0018] More preferably, the plurality of storage grooves in any of the storage areas are arranged at intervals along the circumference of the storage body, and the plurality of storage areas are arranged in parallel.

[0019] Preferably, the storage body is cylindrical, and a cylindrical storage body can have more storage areas distributed from top to bottom.

[0020] As another preferred embodiment, the storage body is hemispherical, and the outer surface of the storage body is recessed along its radial direction to form the storage groove; when materials are placed in the storage groove, the interval between two adjacent materials gradually increases along their extension direction. In this way, while the storage groove is set with a smaller area, there is enough space between the two materials for employees to reach in from the interval between the two materials to take the materials.

[0021] Preferably, the lower surface of the storage body has a weight-reducing groove that is recessed upwards. The weight-reducing groove can reduce the overall weight of the storage device and save materials.

[0022] Preferably, the upper surface of the base has a downwardly recessed annular groove, and the protective cover is a cylinder with an open lower end, and the shape of the lower end of the cylinder is adapted to the shape of the annular groove and can be inserted into the annular groove.

[0023] More preferably, the inner wall of the annular groove has an elastic pad; further, the inner wall of the annular groove has a clamping groove, and the lower end of the cylinder has a buckle corresponding to the clamping groove.

[0024] Furthermore, the number of the card slots and the number of the card buckles are both two.

[0025] Furthermore, by using the slot and the buckle in combination with the elastic pad of the annular groove, employees can easily fasten the protective cover to the base. Compared with the bottle cap type fastening structure, the method of installing the protective cover on the base by using the buckle and the slot is less likely to generate excessive friction and the resulting dust.

[0026] Preferably, the protective cover is made of transparent material.

[0027] Compared with the prior art, the crystal material storage device of the embodiment of the present invention has the following beneficial effects: by using a storage slot for storing materials of a certain size, and by having the corresponding record number in the storage slot, employees can learn the size information of the material stored in the storage slot through the record number, so that when the material is a seed crystal plug, employees can quickly and accurately take out the seed crystal plug of the corresponding size from the storage body and quickly and accurately insert the seed crystal plug into the corresponding seed crystal cavity of the PBN crucible, without the need for employees to cut the seed crystal plug to a size suitable for the seed crystal cavity of the PBN crucible, thereby avoiding the generation of debris and dust to pollute the PBN crucible; therefore, when the present invention is applied to storing seed crystal plugs, it can avoid wasting employees' effective time and improve employees' work efficiency, and can also avoid the generation of debris and dust to pollute the PBN crucible during the process of inserting the seed crystal plug into the seed crystal cavity, thereby avoiding the occurrence of heteronuclear twins during seed crystal growth, which is beneficial to improving the stability of crystal performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of a PBN crucible plug equipped with a seed crystal and a seed crystal plug in the prior art;

[0029] Figure 2 is a three-dimensional diagram of a crystal material storage device provided by an embodiment of the present invention;

[0030] Figure 3 is a cross-sectional view of a crystal material storage device provided by an embodiment of the present invention;

[0031] Figure 4is a three-dimensional diagram of the crystal material storage device provided by an embodiment of the present invention, ignoring the protective cover;

[0032] Figure 5 is a top view of the crystal material storage device provided by an embodiment of the present invention, ignoring the protective cover;

[0033] Figure 6 It is a three-dimensional diagram of the crystal material storage device provided by the embodiment of the present invention, ignoring the protective cover and ignoring the material;

[0034] Figure 7 It is a top view of the crystal material storage device provided by an embodiment of the present invention, ignoring the protective cover and ignoring the material;

[0035] Figure 8 is a cross-sectional view of a base provided by an embodiment of the present invention;

[0036] Fig. 9 It is a cross-sectional view of a storage body provided by an embodiment of the present invention.

[0037] In the figure, 1, base; 11, annular groove; 12, elastic pad; 13, through hole;

[0038] 2. Storage body; 21. Storage slot; 22. Weight reduction slot; 23. Threaded hole;

[0039] 3. Protective cover.

[0040] 100, material; 101, seed crystal; 102, seed crystal plug; 200, seed crystal cavity; 300, PBN crucible. DETAILED DESCRIPTION

[0041] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0042] In the description of the present invention, it is necessary to understand that the terms "length", "width", "thickness", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0045] like Figure 2-7 As shown, a preferred crystal material storage device according to an embodiment of the present invention includes a base 1 , a storage body 2 and a protective cover 3 .

[0046] The storage body 2 is connected to the upper surface of the base 1. The storage body 2 has a plurality of storage slots 21 which are recessed inward and arranged in sequence. One storage slot 21 is used to store a material 100 of a certain size. The outer side of the storage body 2 has a plurality of record numbers which correspond one to one with the storage slots 21. One record number corresponds to a material 100 of a certain size.

[0047] The protective cover 3 is detachably connected to the base 1 and can form a sealed cavity with the base 1 , and the storage body 2 is arranged in the sealed cavity.

[0048] In this embodiment, the material 100 is a seed crystal plug 102 .

[0049] Based on this technical solution, a storage slot 21 is used to store a material 100 of a certain size, and the storage slot 21 has a corresponding record number, so that when the material 100 is a seed crystal plug 102, the employee can know the size information of the seed crystal plug 102 stored in the storage slot 21 through the record number, so that the employee can quickly and accurately take out the seed crystal plug 102 of the corresponding size from the storage body 2 and quickly and accurately insert the seed crystal plug 102 into the corresponding seed crystal cavity of the PBN crucible, without the need for the employee to cut the material to a size suitable for the seed crystal cavity of the PBN crucible, thereby avoiding the generation of debris and dust to pollute the PBN crucible; therefore, when the present invention is applied to storing seed crystal plugs 102, it can not only avoid wasting the effective time of employees and improve the work efficiency of employees, but also avoid the generation of debris and dust to pollute the PBN crucible during the process of inserting the seed crystal plug into the seed crystal cavity, thereby avoiding the occurrence of heteronuclear twins during seed crystal growth, which is beneficial to improving the stability of crystal performance.

[0050] Specifically, the seed plug 102 is a PBN seed plug.

[0051] In one embodiment, see Figure 2 , Figure 3 and Figure 8 The upper surface of the base 1 provided in the embodiment of the present invention has an annular groove 11 which is concave downward and surrounds the storage body 2. The protective cover 3 is a cylinder with an open lower end. The shape of the lower end of the cylinder is adapted to the shape of the annular groove 11 and can be inserted into the annular groove 11. The protective cover 3 can prevent dust and mildew on the seed crystal plug 102 on the storage body 2, thereby preventing foreign matter from contaminating the seed crystal plug 102, thereby avoiding the occurrence of heteronuclear twins during seed crystal growth, which is beneficial to improving the stability of crystal performance.

[0052] The matching mode of the annular groove 11 and the cylinder with an opening at the lower end is adopted to facilitate the quick assembly and disassembly between the protective cover 3 and the base 1, so that the staff can quickly take out the seed crystal plug 102.

[0053] Preferably, the inner wall of the annular groove 11 has an elastic pad 12. The elastic pad 12 can fit with the protective cover 3, which can not only play a good sealing role, but also avoid dust generated by friction between the protective cover 3 and the inner wall of the annular groove 11, thereby preventing foreign matter from contaminating the seed crystal plug 102, and further preventing heteronuclear twins from occurring during seed crystal growth, which is beneficial to improving the stability of crystal performance.

[0054] More preferably, the inner wall of the annular groove 11 has a clamping groove, and the lower end of the cylinder has a buckle corresponding to the clamping groove.

[0055] There are two slots and buckles. Through the slots and buckles combined with the elastic pad of the annular groove, the staff can easily fasten the protective cover 3 to the base 1. Compared with the bottle cap fastening structure, the method of installing the protective cover 3 on the base 1 by using the buckles and slots is not easy to generate excessive friction and the resulting dust.

[0056] Specifically, the elastic pad is a silicone elastic pad.

[0057] Preferably, the protective cover 3 is made of a transparent material, so that the staff can observe the specific conditions of the seed crystal plugs 102 on the storage body 2 through the protective cover 3, thereby greatly facilitating the staff to confirm the inventory before use and count the quantity after use.

[0058] Specifically, the protective cover 3 is made of quartz glass.

[0059] In one embodiment, see Figure 3 , Figure 4 and Figure 5 ; One storage slot 21 provided in the embodiment of the present invention stores one material 100. In this way, the staff can take the seed crystal plug 102 from the storage body 2 without turning the seed crystal plug 102, thereby preventing the multiple seed crystal plugs 102 from rubbing against each other and generating dust to contaminate the PBN crucible 300, thereby preventing the seed crystal from being contaminated by foreign matter and generating heteronuclear twins during crystal growth, which is beneficial to improving the stability of crystal performance.

[0060] In one embodiment, see Figure 6 , Figure 7 and Fig. 9 The storage body 2 provided in the embodiment of the present invention has a plurality of storage areas spaced apart from top to bottom, and the storage areas include a plurality of storage slots 21 .

[0061] Preferably, the storage body 2 is hemispherical, and the outer surface of the storage body 2 is radially recessed to form a storage groove 21. When the material 100 is placed in the storage groove, the interval between two adjacent materials 100 gradually increases along its extension direction. In this way, while the storage groove 21 is set with a smaller area, there is enough space between the two materials 100 for employees to reach in from the gap between the two materials 100 to take the material.

[0062] More preferably, the depth a of the storage slot 21 is 8 mm to 12 mm. The depth a of the storage slot is limited so that the material 100 can be exposed to the outside by a certain distance when stored in the storage slot 21, so that it is convenient for employees to take it.

[0063] Specifically, when the seed crystal plug 102 is stored in the storage tank 21 , 12-15 mm can be exposed outward.

[0064] More preferably, the distance between two adjacent storage slots 21 in the same storage area is the transverse width b, and the distance between two adjacent storage slots 21 in two adjacent storage areas is the longitudinal width e; the transverse width b of the storage slot 21 is 18mm-23mm, and the longitudinal width e of the two adjacent storage slots 21 is 20mm-25mm. The use of the transverse width b and longitudinal width e can not only prevent employees from touching other unnecessary seed crystal plugs 102 in the surrounding area when taking and placing the seed crystal plugs 102 to be used from the storage slot 21, but also enable the storage body 2 to have as many storage slots 21 as possible with as small an area as possible.

[0065] Specifically, the hemispherical storage body 2 has three storage areas spaced apart from top to bottom, and the three storage areas are respectively the first storage area, the second storage area and the third storage area from top to bottom, the first storage area has four storage slots 21, the second storage area has ten storage slots, and the third storage area has fifteen storage slots 21.

[0066] In this embodiment, the record number is a digital record number.

[0067] The digital record number is marked on the outside of the storage body 2 by a sequential marking method, one of the storage slots 21 in the first storage area is used as the starting position, and according to the starting position, numbers 1-29 are used in sequence from top to bottom in a counterclockwise direction as the record number, and then a plurality of seed crystal plugs 102 with diameters from small to large are placed in the plurality of storage slots 21 in sequence from small to large according to the record numbers; employees can record the size represented by each record number on a form, and when employees need to take a seed crystal plug 102, they can directly find the corresponding number by referring to the form, and at the same time, the missing seed crystal plugs 102 of the corresponding size can also be supplemented in subsequent processing, without having to make up for it without a purpose, thereby greatly improving the work efficiency of employees.

[0068] More preferably, the lower surface of the storage body 2 has a weight-reducing groove 22 that is recessed upward. The use of the weight-reducing groove 22 can reduce the overall weight of the storage device and save materials.

[0069] In one embodiment, see Figure 3 , Figure 8 and Fig. 9The base 1 provided in the embodiment of the present invention has a through hole 13, which is a countersunk hole. The lower surface of the storage body 2 has a threaded hole 23 that is recessed upward, and the storage body 2 is connected to the upper surface of the base 1 by passing a bolt through the through hole 13 and the threaded hole 23 in sequence.

[0070] In summary, the embodiment of the present invention provides a crystal material storage device, which has the following features:

[0071] Beneficial effects:

[0072] 1. A storage slot 21 is used to store materials 100 of a certain size, and the storage slot 21 has a corresponding record number. Employees can know the size information of the material stored in the storage slot 21 through the record number, so that the employees can quickly and accurately take out the materials of the corresponding size from the storage body 2.

[0073] 2. When the present invention is applied to storing seed crystal plugs 102, employees can quickly and accurately take out seed crystal plugs 102 of corresponding sizes from the storage body 2 and quickly and accurately insert the seed crystal plugs 102 into the corresponding seed crystal cavities of the PBN crucible. There is no need for employees to cut the materials to a size suitable for the seed crystal cavity of the PBN crucible, thus avoiding the generation of debris and dust to contaminate the PBN crucible.

[0074] 3. The protective cover 3 can prevent dust and mildew on the seed crystal plug 102 on the storage body 2, thereby preventing foreign matter from contaminating the seed crystal plug 102, thereby avoiding the formation of heteronuclear twins during seed crystal growth, which is beneficial to improving the stability of crystal performance.

[0075] 3. The matching mode of the annular groove 11 and the cylinder with an opening at the lower end is adopted to facilitate the quick assembly and disassembly between the protective cover 3 and the base 1, so that the staff can quickly take out the seed crystal plug 102.

[0076] 4. The annular groove 11 is provided with an elastic pad 12. The elastic pad 12 can fit with the protective cover 3, which can not only play a good sealing role, but also avoid the generation of dust due to friction between the protective cover 3 and the inner wall of the annular groove 11, thereby preventing foreign matter from contaminating the seed crystal plug 102, and further avoiding the occurrence of heteronuclear twins during seed crystal growth, which is beneficial to improving the stability of crystal performance.

[0077] 5. The protective cover 3 is made of transparent material, so that the staff can observe the specific conditions of the seed crystal plugs 102 on the storage body 2 through the protective cover 3, which can greatly facilitate the staff to confirm the inventory before use and count the quantity after use.

[0078] 6. By adopting a method of storing one seed crystal plug 102 in one storage slot 21, employees can take the seed crystal plug 102 from the storage body 2 without turning over the seed crystal plug 102, thereby avoiding mutual friction between multiple seed crystal plugs 102 and generating dust pollution of the PBN crucible 300, and further avoiding the formation of heteronuclear twins during crystal growth due to foreign matter contamination of the seed crystal, which is beneficial to improving the stability of crystal performance.

[0079] 7. The depth of the storage slot is limited to a=8mm-12mm, so that the seed crystal plug 102 can be exposed to the outside by a certain distance when stored in the storage slot 21, so as to facilitate the staff to take it out.

[0080] 8. A hemispherical storage body 2 is used, and a storage groove 21 is formed by radially recessing the outer surface of the storage body 2. When the material 100 is placed in the storage groove 21, the interval between two adjacent seed crystal plugs 102 gradually increases along the extension direction thereof. In this way, while the storage groove is set with a smaller area, there is enough space between the two seed crystal plugs 102 for employees to reach in from the interval between the two seed crystal plugs 102 by hand to take out the seed crystal plug 102.

[0081] 9. By adopting a method in which the lateral width b of the storage slot 21 is 18mm-23mm and the longitudinal width e of two adjacent storage slots 21 is 20mm-25mm, it is possible to prevent employees from touching other unnecessary seed crystal plugs 102 in the vicinity when taking and placing the seed crystal plugs 102 to be used from the storage slot 21, so that the storage body 2 can have as many storage slots 21 as possible in the smallest possible area.

[0082] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A crystal material storage device, characterized in that: include: Base; A storage body, the storage body is connected to the base, the storage body has a plurality of storage slots that are recessed inward and arranged in sequence, one storage slot is used to store materials of one size, and the outer side of the storage body has a plurality of record numbers, and the record numbers correspond to the storage slots one by one; A protective cover, the protective cover is detachably connected to the base and can form a sealed cavity with the base, and the storage body is arranged in the sealed cavity; One storage slot stores one material correspondingly; The material is a seed crystal plug or a seed crystal; The storage body has a plurality of storage areas spaced from top to bottom, and the storage areas are provided with a plurality of storage slots; The storage body is hemispherical; The plurality of storage slots in any of the storage areas are arranged at intervals along the circumference of the storage body, and the plurality of storage areas are arranged in parallel; The outer surface of the storage body is recessed along its radial direction to form the storage groove.

2. The crystal material storage device according to claim 1, characterized in that: The depth a of the storage groove is 8 mm-12 mm.

3. The crystal material storage device according to claim 1, characterized in that: The transverse width b between two adjacent storage grooves is ≥18 mm, and the longitudinal width e between two adjacent storage grooves is ≥18 mm.

4. The crystal material storage device according to any one of claims 1 to 3, characterized in that: The upper surface of the base is provided with a downwardly recessed annular groove, and the protective cover is a cylinder with an open lower end, and the shape of the lower end of the cylinder is adapted to the shape of the annular groove and can be inserted into the annular groove.

5. The crystal material storage device according to claim 4, characterized in that: The inner wall of the annular groove is provided with an elastic pad.

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