PBN crucible

Abstract

The utility model belongs to the technical field of crucibles, and particularly relates to a PBN crucible which comprises a supporting cylinder. The top of the supporting cylinder is in contact with a connecting cylinder; the outer wall of the bottom of the supporting cylinder is sleeved with a base. An annular through groove is formed in the top of the supporting cylinder; the bottom of the connecting cylinder is fixedly connected with a sliding ring; the sliding ring slides on the inner wall of the annular through groove; the side wall of the bottom of the sliding ring is fixedly connected with a sliding block. A sliding groove is formed in the inner wall of the annular through groove. The sliding blocks slide on the inner walls of the sliding grooves. A plurality of sets of positioning grooves are formed in the positions, located on one side of the sliding groove, of the inner wall of the annular through groove. The sliding blocks make contact with the inner walls of the positioning grooves, the connecting cylinders are rotated, the sliding blocks move along the inner walls of the positioning grooves, then the connecting cylinders can be pulled, the sliding rings slide in the annular through grooves, the distance between the connecting cylinders and the supporting cylinders is adjusted, and the overall volume of the crucible is changed. And PBN crucibles with different sizes do not need to be frequently replaced, so that the convenience is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the crucible technical field, specifically a kind of PBN crucible. BACKGROUND

[0002] PBN crucible is made of pyrolytic boron nitride (PBN) material, PBN is an advanced inorganic non-metallic material, in the high-temperature experiment of material science, chemistry and other scientific research fields, PBN crucible is commonly used reaction container, it can withstand the conditions required by various high-temperature chemical reactions, provide a stable, controllable reaction environment for researchers, facilitate observation and study chemical reaction process, product structure and performance etc.

[0003] At present, in prior art, most PBN crucibles are integrally formed structure, independent containing space is formed in the inside, during experimental operation, first, the material to be treated is placed in the crucible, then the crucible is heated, so that relevant test is carried out.

[0004] Then, when carrying out test, different materials need to be tested, because the characteristics and dosage of different materials are different, the size and volume of required PBN crucible are also different, however, under prior art conditions, most PBN crucibles adopt integrally formed structure, which leads to that test personnel have to frequently change different sizes of PBN crucible when facing various test requirements, operation process is extremely tedious, not only that, in order to meet various tests, multiple specifications and sizes of PBN crucible need to be purchased, which undoubtedly greatly increases test cost, therefore, a kind of PBN crucible is proposed for the above problems. INVENTION CONTENTS

[0005] In order to make up for the deficiencies of prior art and solve at least one technical problem proposed in background art, the utility model provides a kind of PBN crucible.

[0006] The technical scheme adopted by the utility model to solve its technical problems is: the utility model discloses a kind of PBN crucible, including support cylinder;The support cylinder top is contacted with connecting cylinder;The outer wall of the support cylinder bottom is equipped with base;Annular through slot is opened in the support cylinder top;The sliding ring is fixedly connected in the bottom of the connecting cylinder;The sliding ring slides in the inner wall of annular through slot;The sliding ring bottom is fixedly connected with the side wall of sliding block;The inner wall of annular through slot is equipped with sliding slot;The sliding block slides in the inner wall of sliding slot;The inner wall of annular through slot is equipped with positioning groove on one side of sliding slot and multiple groups;The sliding block is contacted in the inner wall of positioning groove;Positioning groove is communicated with sliding slot.

[0007] Preferably, a fixing cylinder is fixedly connected to the side wall at the bottom end of the support cylinder; a rectangular through groove is formed on the side wall of the base; a limiting groove is formed on one side of the rectangular through groove on the side wall of the base; the fixing cylinder contacts the inner wall of the rectangular through groove; a sliding cylinder is slidably connected to the inner wall of the fixing cylinder; a connecting plate is fixedly connected to the end of the sliding cylinder; a locking block is fixedly connected to the side wall of the connecting plate on one side of the sliding cylinder; the locking block contacts the inner wall of the limiting groove.

[0008] Preferably, a stop block is inserted into the inner wall of the top of the chute; a bolt is threaded through the side wall of the stop block; a threaded hole is opened in the side wall of the support cylinder; and the outer wall of the bolt end is threaded to the inner wall of the threaded hole.

[0009] Preferably, the end of the inner wall of the support cylinder is provided with a first inclined surface; the end of the inner wall of the connecting cylinder is provided with a second inclined surface.

[0010] Preferably, the bottom of the support cylinder is provided with an annular sealing groove; a sealing ring is fixedly connected to the bottom of the inner wall of the base; the sealing ring contacts the inner wall of the annular sealing groove.

[0011] Preferably, a spring is fixedly connected to the inner wall of the fixed cylinder; the end of the spring is fixedly connected to the inner wall of the slide cylinder; the spring is made of zirconia ceramic.

[0012] Preferably, the sidewall of the card block is set as an inclined surface.

[0013] The beneficial effects of this utility model are:

[0014] 1. This utility model provides a PBN crucible. By rotating the connecting cylinder, the slider passes through the inner wall of the positioning groove. At this time, the connecting cylinder can be pulled to make the sliding ring slide on the inner wall of the annular through groove. In this way, the connection distance between the connecting cylinder and the support cylinder can be adjusted, and the overall volume of the crucible can be changed. This way, when facing diverse test requirements, the test personnel do not need to frequently change PBN crucibles of different sizes, thus improving convenience.

[0015] 2. This utility model provides a PBN crucible. Through the cooperation between the connecting plate, the locking block, the sliding cylinder, the spring and the fixed cylinder, the base can be disassembled from the bottom of the support cylinder. This facilitates cleaning of the bottom of the inner wall of the support cylinder and improves convenience. At the same time, with the help of the setting of the stop block, bolt and threaded hole, the connecting cylinder can be disassembled, which further improves the convenience of cleaning. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 This is a perspective view of the overall device of this utility model;

[0018] Figure 2 This is a three-dimensional cross-sectional view of the connecting cylinder and sliding ring in this utility model;

[0019] Figure 3 This is a three-dimensional sectional view of the support cylinder and the stop block in this utility model.

[0020] Figure 4 This is a three-dimensional sectional view of the support cylinder and the base in this utility model.

[0021] Figure 5 This utility model Figure 3 A magnified 3D view of region A;

[0022] Figure 6 This utility model Figure 4 A magnified 3D view of region B.

[0023] Legend:

[0024] 1. Support cylinder; 11. Inclined surface one; 12. Annular sealing groove; 13. Positioning groove; 14. Sliding groove; 15. Annular through groove; 2. Connecting cylinder; 21. Sliding block; 22. Sliding ring; 23. Inclined surface two; 3. Stop block; 31. Bolt; 32. Threaded hole; 4. Base; 41. Sealing ring; 42. Limiting groove; 43. Rectangular through groove; 5. Connecting plate; 51. Locking block; 52. Sliding cylinder; 53. Spring; 54. Fixing cylinder. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Specific implementation examples are given below.

[0027] Please see Figure 1 - Figure 6This utility model provides a PBN crucible, including a support cylinder 1; a connecting cylinder 2 is in contact with the top of the support cylinder 1; a base 4 is fitted onto the outer wall of the bottom of the support cylinder 1; an annular groove 15 is formed at the top of the support cylinder 1; a sliding ring 22 is fixedly connected to the bottom of the connecting cylinder 2; the sliding ring 22 slides on the inner wall of the annular groove 15; a slider 21 is fixedly connected to the side wall of the bottom of the sliding ring 22; a sliding groove 14 is formed on the inner wall of the annular groove 15; the slider 21 slides on the inner wall of the sliding groove 14; a positioning groove 13 is formed on one side of the inner wall of the annular groove 15 located on the sliding groove 14, and there are multiple sets of such grooves; the slider 21 contacts the inner wall of the positioning groove 13; the positioning groove 13 is connected to the sliding groove 14; during operation, the PBN crucible is formed by the combination of the support cylinder 1, the connecting cylinder 2, and the base 4. When needed, the material is placed in the middle of the support cylinder 1 and the connecting cylinder 2 for testing. When conducting continuous tests on different materials... When the volume of the PBN crucible needs to be adjusted, simply rotate the connecting cylinder 2. The connecting cylinder 2 will cause the sliding ring 22 to slide circumferentially on the inner wall of the annular groove 15. The sliding ring 22 will then cause the slider 21 to slide on the inner wall of the positioning groove 13 until the slider 21 completely disengages from the inner wall of the positioning groove 13 and enters the inner wall of the sliding groove 14. At this point, the connecting cylinder 2 can be pulled to make the sliding ring 22 slide on the inner wall of the annular groove 15. This will change the distance between the connecting cylinder 2 and the support cylinder 1, and the volume of the PBN crucible will change accordingly. After adjustment, rotate the connecting cylinder 2 in the opposite direction. The connecting cylinder 2 will cause the sliding ring 22 and the slider 21 to rotate in the opposite direction to reset until the slider 21 enters the inner wall of another set of positioning grooves 13. This completes the adjustment of the PBN crucible volume, ensuring that testers do not need to frequently change PBN crucibles of different sizes when facing diverse test requirements, thus improving convenience.

[0028] Furthermore, such as Figure 4 and Figure 6As shown, a fixed cylinder 54 is fixedly connected to the side wall of the bottom end of the support cylinder 1; a rectangular through groove 43 is opened on the side wall of the base 4; a limiting groove 42 is opened on one side of the side wall of the base 4 located in the rectangular through groove 43; the fixed cylinder 54 contacts the inner wall of the rectangular through groove 43; a sliding cylinder 52 is slidably connected to the inner wall of the fixed cylinder 54; a connecting plate 5 is fixedly connected to the end of the sliding cylinder 52; a locking block 51 is fixedly connected to the side wall of the connecting plate 5 located on one side of the sliding cylinder 52; the locking block 51 contacts the inner wall of the limiting groove 42. During operation, when it is necessary to clean the inner wall of the support cylinder 1, the base can be... 4. Disassembly facilitates cleaning of the bottom of the inner wall of the support cylinder 1, improving convenience. Specific operation: Pull the connecting plate 5, which will simultaneously move the locking block 51 and the sliding cylinder 52. The sliding cylinder 52 will slide on the inner wall of the fixed cylinder 54, while the locking block 51 will slide on the inner wall of the limiting groove 42 until the locking block 51 disengages from the inner wall of the limiting groove 42. This allows the base 4 to be pulled to separate from the support cylinder 1. When cleaning the support cylinder 1, the interior of the base 4 and the support cylinder 1 can be easily cleaned, ensuring cleaning effect and efficiency, and improving practicality.

[0029] Furthermore, such as Figure 3 and Figure 5 As shown, a stop block 3 is inserted into the inner wall of the top of the slide groove 14; a bolt 31 is threadedly connected to the side wall of the stop block 3; a threaded hole 32 is opened on the side wall of the support cylinder 1; the outer wall of the end of the bolt 31 is threadedly connected to the inner wall of the threaded hole 32. When the support cylinder 1 needs to be cleaned during operation, the connecting cylinder 2 and the sliding ring 22 can be disassembled to further improve the cleaning effect. The specific operation is as follows: first, rotate the bolt 31 until the bolt 31 is completely disengaged from the inner wall of the threaded hole 32. At this time, the stop block 3 can be moved by pulling the bolt 31, so that the stop block 3 can be completely disengaged from the inner wall of the top of the slide groove 14. Then, rotate the connecting cylinder 2 to make the slider 21 enter the inner wall of the slide groove 14. In this way, the connecting cylinder 2 can be disassembled by pulling it upward. This can make the cleaning more thorough and improve the practicality.

[0030] Furthermore, such as Figure 2 - Figure 3 As shown, the end of the inner wall of the support cylinder 1 is provided with a slope 11; the end of the inner wall of the connecting cylinder 2 is provided with a slope 23. During operation, the slope 11 and the slope 23 ensure that when the material inside the PBN crucible is poured out, the connection between the support cylinder 1 and the connecting cylinder 2 can flow out smoothly, reducing the risk of material getting stuck in the connection and improving practicality.

[0031] Furthermore, such as Figure 4As shown, the bottom of the support cylinder 1 is provided with an annular sealing groove 12; a sealing ring 41 is fixedly connected to the bottom of the inner wall of the base 4; the sealing ring 41 contacts the inner wall of the annular sealing groove 12. When working, the base 4 is set as a cylindrical bowl shape, the side wall of its inner wall is sleeved on the outer wall of the bottom end of the support cylinder 1, and the bottom of its inner wall contacts the bottom of the support cylinder 1. When the base 4 is installed at the bottom of the support cylinder 1, the sealing ring 41 will contact the inner wall of the annular sealing groove 12, which has a certain sealing effect. The material of the sealing ring 41 is the same as that of the base 4, which has the effect of high temperature resistance.

[0032] Furthermore, such as Figure 4 and Figure 6 As shown, a spring 53 is fixedly connected to the inner wall of the fixed cylinder 54; the end of the spring 53 is fixedly connected to the inner wall of the sliding cylinder 52; the spring 53 is made of zirconia ceramic. When working, the spring 53 has a certain elasticity. Through its own elasticity, it ensures that when the connecting cylinder 2 is sleeved on the outer wall of the bottom end of the support cylinder 1, the sliding cylinder 52 can always contact the inner wall of the limiting groove 42, ensuring the stability of the base 4 installation. In addition, the spring 53 is made of zirconia ceramic. Zirconia ceramic has a high melting point, high strength, high hardness and good high temperature resistance. It has a low coefficient of thermal expansion, good dimensional stability at high temperature, and can withstand large temperature changes without cracking.

[0033] Furthermore, such as Figure 4 and Figure 6 As shown, the side wall of the locking block 51 is set as an inclined surface. During operation, the inclined surface ensures that when the base 4 is installed, the base 4 will push the locking block 51 and the connecting plate 5 to move synchronously along the inclined surface of the locking block 51 until the locking block 51 overlaps with the limiting groove 42. At this time, the spring 53 will pull the connecting plate 5 and the locking block 51 to reset through its own elasticity, so that the locking block 51 is locked in the inner wall of the limiting groove 42, which improves the convenience of installation.

[0034] Working principle: When adjusting the volume of the PBN crucible for continuous testing of different materials, simply rotate the connecting cylinder 2. The connecting cylinder 2 will cause the sliding ring 22 to slide circumferentially on the inner wall of the annular groove 15. The sliding ring 22 will then cause the slider 21 to slide on the inner wall of the positioning groove 13 until the slider 21 completely disengages from the inner wall of the positioning groove 13 and enters the inner wall of the sliding groove 14. At this point, the connecting cylinder 2 can be pulled to make the sliding ring 22 slide on the inner wall of the annular groove 15. This will change the distance between the connecting cylinder 2 and the support cylinder 1, and the volume of the PBN crucible will change accordingly. After adjustment, rotate the connecting cylinder 2 in the opposite direction. The connecting cylinder 2 will cause the sliding ring 22 and the slider 21 to rotate in the opposite direction to reset until the slider 21 enters the inner wall of another set of positioning grooves 13. This completes the adjustment of the PBN crucible volume, ensuring that testers do not need to frequently change PBN crucibles of different sizes when facing diverse test requirements, thus improving convenience.

[0035] When it is necessary to clean the inner wall of the support cylinder 1, the base 4 can be disassembled, which facilitates cleaning of the bottom of the inner wall of the support cylinder 1 and improves convenience. Specific operation: Pull the connecting plate 5. The connecting plate 5 will simultaneously move the locking block 51 and the sliding cylinder 52. The sliding cylinder 52 will slide on the inner wall of the fixed cylinder 54, while the locking block 51 will slide on the inner wall of the limiting groove 42 until the locking block 51 disengages from the inner wall of the limiting groove 42. This allows the base 4 to be pulled away from the support cylinder 1. During installation, the base... The base 4 is fitted onto the outer wall of the bottom end of the support cylinder 1, ensuring that the rectangular through groove 43 is aligned with the fixed cylinder 54. During this process, the base 4 will push the locking block 51 and the connecting plate 5 to move synchronously along the inclined surface of the locking block 51. The connecting plate 5 will drive the sliding cylinder 52 to move, and the sliding cylinder 52 will stretch the spring 53 until the locking block 51 overlaps with the limiting groove 42. At this time, the spring 53 will pull the connecting plate 5 and the locking block 51 to reset through its own elasticity, so that the locking block 51 is locked in the inner wall of the limiting groove 42. In this way, the base 4 is installed quickly and conveniently.

[0036] When cleaning the support cylinder 1 is required, the connecting cylinder 2 and the sliding ring 22 can be disassembled to further improve the cleaning effect. The specific operation is as follows: First, rotate the bolt 31 until the bolt 31 is completely disengaged from the inner wall of the threaded hole 32. At this time, the stop block 3 can be moved by pulling the bolt 31, so that the stop block 3 can be completely disengaged from the inner wall of the top of the slide groove 14. Then, rotate the connecting cylinder 2 to make the slider 21 enter the inner wall of the slide groove 14. In this way, the connecting cylinder 2 can be disassembled by pulling it upward. This can make the cleaning more thorough and improve the practicality.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A PBN crucible, comprising a support cylinder (1); characterized in that: The top of the support cylinder (1) is in contact with the connecting cylinder (2); the bottom of the support cylinder (1) is fitted with a base (4); the top of the support cylinder (1) is provided with an annular through groove (15); the bottom of the connecting cylinder (2) is fixedly connected with a sliding ring (22); the sliding ring (22) slides on the inner wall of the annular through groove (15); the side wall of the bottom of the sliding ring (22) is fixedly connected with a slider (21); the inner wall of the annular through groove (15) is provided with a sliding groove (14); the slider (21) slides on the inner wall of the sliding groove (14); the inner wall of the annular through groove (15) is provided with a positioning groove (13) on one side of the sliding groove (14), and there are multiple sets of such grooves; the slider (21) contacts the inner wall of the positioning groove (13); the positioning groove (13) is connected to the sliding groove (14).

2. The PBN crucible according to claim 1, characterized in that: A fixed cylinder (54) is fixedly connected to the side wall at the bottom end of the support cylinder (1); a rectangular through groove (43) is opened on the side wall of the base (4); a limiting groove (42) is opened on one side of the rectangular through groove (43) on the side wall of the base (4); the fixed cylinder (54) contacts the inner wall of the rectangular through groove (43); a sliding cylinder (52) is slidably connected to the inner wall of the fixed cylinder (54); a connecting plate (5) is fixedly connected to the end of the sliding cylinder (52); a locking block (51) is fixedly connected to the side wall of the connecting plate (5) on one side of the sliding cylinder (52); the locking block (51) contacts the inner wall of the limiting groove (42).

3. The PBN crucible according to claim 1, characterized in that: A stop block (3) is inserted into the inner wall of the top of the slide (14); a bolt (31) is threaded through the side wall of the stop block (3); a threaded hole (32) is opened on the side wall of the support cylinder (1); the outer wall of the end of the bolt (31) is threaded to the inner wall of the threaded hole (32).

4. The PBN crucible according to claim 1, characterized in that: The end of the inner wall of the support cylinder (1) is provided with a first inclined surface (11); the end of the inner wall of the connecting cylinder (2) is provided with a second inclined surface (23).

5. A PBN crucible according to claim 1, characterized in that: The bottom of the support cylinder (1) is provided with an annular sealing groove (12); a sealing ring (41) is fixedly connected to the bottom of the inner wall of the base (4); the sealing ring (41) contacts the inner wall of the annular sealing groove (12).

6. A PBN crucible according to claim 2, characterized in that: A spring (53) is fixed to the inner wall of the fixed cylinder (54); the end of the spring (53) is fixed to the inner wall of the slide cylinder (52); the spring (53) is made of zirconium oxide ceramic.

7. A PBN crucible according to claim 2, characterized in that: The sidewall of the card block (51) is set as an inclined surface.

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