CN115111914A

CN115111914A - Molybdenum crucible convenient to clean

Info

Publication number: CN115111914A
Application number: CN202210778001.3A
Authority: CN
Inventors: 万瑞春; 万瑞岚; 吴善忠
Original assignee: Taizhou Wanxin Tungsten & Molybdenum Products Co ltd
Current assignee: Taizhou Wanxin Tungsten & Molybdenum Products Co ltd
Priority date: 2022-07-04
Filing date: 2022-07-04
Publication date: 2022-09-27
Anticipated expiration: 2042-07-04
Also published as: CN115111914B

Abstract

The invention relates to the field of molybdenum crucible devices, and discloses a molybdenum crucible convenient to clean, which comprises a molybdenum crucible installation shell, a cover body, a molybdenum crucible side wall and a molybdenum crucible bottom plate, wherein the molybdenum crucible bottom plate is rotatably connected to the inner wall of the bottom of the molybdenum crucible installation shell, the molybdenum crucible side wall is movably inserted on the molybdenum crucible bottom plate, two transverse holes are symmetrically formed in the side wall of the molybdenum crucible installation shell, the cover body penetrates through the two transverse holes to be inserted on the molybdenum crucible installation shell, the bottom of the molybdenum crucible installation shell is attached to the upper part of the molybdenum crucible side wall, an installation groove is formed in the molybdenum crucible bottom plate, a reversed-shaped bulge is fixedly installed in the middle of a loading area of the installation groove on the molybdenum crucible bottom plate, a groove is formed in the bottom of the installation groove on the molybdenum crucible side wall, the molybdenum crucible with the solution of being convenient for to clean now passes through threaded connection's mode separation bottom plate, and threaded connection is more troublesome, adopts the problem that also can leak some solutions easily in the mode gap of increasing the inside lining.

Description

Molybdenum crucible convenient to clean

Technical Field

The invention relates to the field of molybdenum crucible devices. And more particularly, to a molybdenum crucible that is easy to clean.

Background

The molybdenum crucible is a container for melting metal and alloy, which is widely applied to metallurgy, chemical industry and rare earth manufacturing enterprises. In recent years, with the more serious pollution caused by the use of traditional resources in China, the development of novel green energy becomes an urgent task, which is more obvious when being applied to the preparation industry of monocrystalline silicon, polycrystalline silicon and sapphire.

The molybdenum crucible is produced by Mo-1 molybdenum powder, and the using temperature is 1100-1700 ℃. The method is mainly applied to the industries of metallurgy industry, rare earth industry, monocrystalline silicon, solar energy, artificial crystals, machining and the like. Because the melting point of molybdenum is as high as 2610 ℃, the molybdenum crucible is widely applied to the core container in industrial furnaces such as sapphire single crystal growth furnace, quartz glass smelting furnace, rare earth smelting furnace and the like, and the working temperature environment of the molybdenum crucible is generally above 2000 ℃. Particularly for a sapphire single crystal growth furnace, the molybdenum crucible with the characteristics of high purity, high density, no internal cracks, accurate size, smooth inner and outer walls and the like plays a critical role in the seed crystal success rate, the crystal pulling quality control, the crystal removal and sticking and the service life of the sapphire single crystal growth process. After production and test of the molybdenum crucible are finished, the solution in the molybdenum crucible is poured, but the solution is solidified at the bottom of the molybdenum crucible due to large internal and external temperature difference, so that the molybdenum crucible is not easy to clean, and the replacement frequency of the molybdenum crucible is high. The existing mode of adopting threaded connection to separate the bottom plate is troublesome in threaded connection, and some solution can easily leak in the gap by adopting the mode of increasing the lining.

Therefore, a molybdenum crucible convenient to clean has been designed for the above circumstances.

Disclosure of Invention

The invention aims to provide a molybdenum crucible convenient to clean, and aims to solve the problems that the conventional molybdenum crucible convenient to clean is troublesome in threaded connection because a bottom plate is separated in a threaded connection mode, and solution is easy to leak in a gap in a lining increasing mode.

A molybdenum crucible convenient to clean comprises a molybdenum crucible mounting shell, a cover body, molybdenum crucible side walls and a molybdenum crucible bottom plate, wherein the molybdenum crucible bottom plate is rotatably connected to the inner wall of the bottom of the molybdenum crucible mounting shell, the molybdenum crucible side walls are movably inserted on the molybdenum crucible bottom plate, two transverse holes are symmetrically formed in the side walls of the molybdenum crucible mounting shell, the cover body penetrates through the two transverse holes to be inserted on the molybdenum crucible mounting shell, the bottom of the molybdenum crucible mounting shell is attached to the upper portion of the molybdenum crucible side walls, a mounting groove is formed in the molybdenum crucible bottom plate, a square-shaped bulge is fixedly mounted in the middle of a loading area, located in the mounting groove, of the molybdenum crucible bottom plate, a groove is formed in the bottom of the mounting groove, the groove corresponds to the square-shaped bulge, a containing groove is formed in the inner portion of the molybdenum crucible side walls above the groove, a piston is inserted on the containing groove, and the sections of the upper end and the lower end of the piston are wider than the section of the middle of the molybdenum crucible side wall, inside the piston extended to the recess through molybdenum crucible bottom plate, the lower extreme of piston pasted with the recess mutually, and the upper end of piston pasted with the inner wall of holding tank mutually, and the middle part lateral wall of piston is located the inside spring that has cup jointed of recess, and the both ends of holding tank are provided with plugging device one and plugging device two.

Preferably, two rotating shafts are fixedly mounted on two sides of the molybdenum crucible bottom plate, a small hole is formed in the position, corresponding to the rotating shaft, of the side wall of the molybdenum crucible mounting shell, the rotating shaft penetrates through the small hole and extends to the outer side of the molybdenum crucible mounting shell, and an inserting block is arranged on the outer side, located on the molybdenum crucible mounting shell, of the rotating shaft.

Preferably, plugging device one includes movable block one and extrusion piece one, and the holding tank is close to one side grafting movable block one of molybdenum crucible installation shell, and the one end that molybdenum crucible installation shell was kept away from to movable block one is pasted mutually with the lateral wall of holding tank, and the one end longitudinal section that movable block one is close to the molybdenum crucible installation shell is less than other end longitudinal section, and four extrusion pieces one of one end fixed mounting that movable block one is close to the molybdenum crucible installation shell.

Preferably, the second plugging device comprises a second movable block and a second extrusion block, the second movable block is inserted into one side of the containing tank far away from the molybdenum crucible installation shell, one end of the second movable block, which is close to the molybdenum crucible installation shell, is attached to the side wall of the containing tank, the longitudinal section of one end of the first movable block, which is far away from the molybdenum crucible installation shell, is smaller than that of the other end of the first movable block, and the first movable block is far away from the four second extrusion blocks fixedly installed at one end of the molybdenum crucible installation shell.

Preferably, two ends of the second extrusion block are inclined planes, and one ends of the two vertical extrusion blocks, which are close to each other, correspond to each other.

Preferably, the accommodating groove contains a liquid therein.

Preferably, the grafting piece includes the handle, bolt and U type installation piece, U type installation piece is fixed mounting respectively in the both sides of molybdenum crucible installation shell, U type installation piece cavity in the middle of the cavity forms the installation chamber, the grafting bolt on the U type installation piece, the bolt is close to the one end of molybdenum crucible installation shell and pegs graft inside the pivot, the one end of molybdenum crucible installation shell is kept away from to handle fixed mounting at the bolt, fixed mounting has the stopper on the bolt is located the installation cavity, the bilateral symmetry of stopper is pegged graft and is had two cylinders, the stopper is in the same place with cylinder sliding connection, the cylindrical both ends respectively with molybdenum crucible installation shell and U type installation piece fixed connection together, the spring has been cup jointed between cylindrical lateral wall is located U type installation piece and the stopper.

Preferably, one end of the bolt close to the rotating shaft is square, and the rotating shaft is cylindrical.

Compared with the prior art, the invention has the advantages that:

1. the molybdenum crucible bottom plate rotates to be connected on the bottom inner wall of molybdenum crucible mounting shell, after the experiment, take out the lid, take out the molybdenum crucible lateral wall, can conveniently clear up the inner wall of molybdenum crucible lateral wall, it can conveniently clean the bottom inner wall of molybdenum crucible to rotate the molybdenum crucible bottom plate, through pressing down the molybdenum crucible lateral wall, peg graft and go up the lid, the inside piston of molybdenum crucible lateral wall is upwards extruded by "shape" arch, drive the inside solution extrusion of holding tank to the both sides of holding tank, movable block one and movable block two are extruded both sides, drive the inner wall of extrusion piece one and two extrusion mounting grooves, the gap between molybdenum crucible lateral wall and the mounting groove can be plugged up to extrusion piece two like this, make inside solution of molybdenum crucible lateral wall be difficult to get into inside the mounting groove, and it is more convenient than the threaded mode through the mode of pressing. The molybdenum crucible solves the problems that the existing molybdenum crucible convenient to clean is troublesome in threaded connection because the bottom plate is separated in a threaded connection mode, and some solution is easy to leak in a gap in a mode of increasing the lining.

2. The one end that the bolt is close to the pivot is square, and the pivot is cylindrical, and the pivot can rotate in the inside of molybdenum crucible installation shell, and the grafting piece is square in the inside of pivot of pegging graft simultaneously, can guarantee that molybdenum crucible bottom plate can be steady fix on molybdenum crucible installation shell.

3. Two ends of the second extrusion block are inclined planes, one ends, close to the two vertical extrusion blocks, correspond to each other, and in the process that the two extrusion blocks extrude towards the center, the ends, close to the two vertical extrusion blocks, extrude each other to seal the corner. Further, the solution is not easy to enter the installation groove.

4. Two side surfaces of the side wall of the molybdenum crucible are extruded through the arrangement of the second extrusion block and the first extrusion block, so that the side wall of the molybdenum crucible can be more stably fixed on the bottom plate of the molybdenum crucible.

5. Due to the physical characteristics of the crucible material and the mechanical characteristics of the round crucible structure, the crucible after being used for many times can gradually crack, fall off and be damaged, so that the working efficiency of production can be reduced, the operation time of an operator in the furnace is prolonged, and the personal safety hidden danger of the operator is increased. The square crucible is structurally designed to improve the mechanical strength of the square crucible, so that the service life of the crucible is prolonged, and the complete tapping rate of the crucible is well improved.

6. Pulling the handle leftwards, the bolt also moves leftwards, the limiting block extrudes the spring, the limiting block moves leftwards, the bolt is separated from the rotating shaft, the molybdenum crucible bottom plate can be separated from the molybdenum crucible mounting shell, when the molybdenum crucible bottom plate is mounted on the molybdenum crucible mounting shell as required, the handle is loosened, and the spring rebounds to enable the bolt to be inserted into the rotating shaft. Therefore, the molybdenum crucible bottom plate can be conveniently detached, and the molybdenum crucible bottom plate can be firmly arranged on the molybdenum crucible installation shell.

Drawings

FIG. 1 is a cross-sectional view of the overall construction of the present invention;

FIG. 2 is a perspective view of the overall structure of the present invention;

FIG. 3 is an exploded view of the overall structure of the present invention;

FIG. 4 is a perspective view of a bottom plate of a molybdenum crucible of the present invention;

FIG. 5 is a schematic view of a node A according to the present invention;

FIG. 6 is a partial cross-sectional view of a bottom plate of a molybdenum crucible of the present invention;

FIG. 7 is a B node thumbnail view of the present invention;

fig. 8 is a C node thumbnail image in the present invention.

The reference numbers in the figures illustrate: 1. a molybdenum crucible mounting shell; 2. a cover body; 3. a transverse hole; 4. an insertion block; 401. a handle; 402. a bolt; 403. a U-shaped mounting block; 404. a limiting block; 405. a cylinder; 406. a spring; 5. a molybdenum crucible side wall; 6. a rotating shaft; 7. a molybdenum crucible bottom plate; 8. mounting grooves; 9. a 'square' bulge; 10. a piston; 11. a spring; 12. accommodating grooves; 13. a first movable block; 14. extruding a first block; 15. a second movable block; 16. and (5) extruding a second block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.

Referring to fig. 1-8, the present invention provides a technical solution: a molybdenum crucible convenient to clean comprises a molybdenum crucible installation shell 1, a cover body 2, molybdenum crucible side walls 5 and a molybdenum crucible bottom plate 7, wherein the molybdenum crucible bottom plate 7 is rotatably connected to the inner wall of the bottom of the molybdenum crucible installation shell 1, the molybdenum crucible side walls 5 are movably inserted on the molybdenum crucible bottom plate 7, two transverse holes 3 are symmetrically formed in the side walls of the molybdenum crucible installation shell 1, the cover body 2 penetrates through the two transverse holes 3 to be inserted on the molybdenum crucible installation shell 1, the bottom of the molybdenum crucible installation shell 1 is attached to the upper part of the molybdenum crucible side walls 5, an installation groove 8 is formed in the molybdenum crucible bottom plate 7, a square-back-shaped bulge 9 is fixedly installed in the middle of a loading area, located in the installation groove 8, of the molybdenum crucible bottom plate 7, a groove is formed in the bottom of the molybdenum crucible side walls 5, the groove corresponds to the square-back-shaped bulge 9, an accommodating groove 12 is formed in the molybdenum crucible side walls 5 above the groove, the piston 10 is inserted into the containing groove 12, the cross sections of the upper end and the lower end of the piston 10 are wider than the cross section of the middle portion, the piston 10 extends to the inside of the groove through the molybdenum crucible bottom plate 7, the lower end of the piston 10 is attached to the groove, the upper end of the piston 10 is attached to the inner wall of the containing groove 12, the middle side wall of the piston 10 is located inside the groove and sleeved with the spring 11, and the two ends of the containing groove 12 are provided with the first plugging device and the second plugging device. The molybdenum crucible bottom plate 7 is rotationally connected to the inner wall of the bottom of the molybdenum crucible mounting shell 1, after the experiment is finished, the cover body 2 is drawn out, the molybdenum crucible side wall 5 is taken out, can conveniently clean the inner wall of the side wall 5 of the molybdenum crucible, can conveniently clean the inner wall of the bottom of the molybdenum crucible by rotating the bottom plate 7 of the molybdenum crucible, by pressing the molybdenum crucible side wall 5, inserting the upper cover body 2, the piston 10 inside the molybdenum crucible side wall 5 is extruded upwards by the square-back-shaped bulge 9 to drive the solution inside the holding tank 12 to be extruded to the two sides of the holding tank 12, the first movable block 13 and the second movable block 15 are extruded to the two sides to drive the first extrusion block 14 and the second extrusion block 16 to extrude the inner wall of the mounting groove 8, therefore, the second extrusion block 16 can seal the gap between the molybdenum crucible side wall 5 and the installation groove 8, so that the solution in the molybdenum crucible side wall 5 is not easy to enter the installation groove 8, and the pressing mode is more convenient than the thread mode. The problem of current molybdenum crucible of being convenient for to clean passes through threaded connection's mode separation bottom plate, threaded connection is more troublesome, also can leak some solutions easily in the mode gap that adopts the increase inside lining is solved.

Furthermore, two rotating shafts 6 are fixedly installed on two sides of the molybdenum crucible bottom plate 7, a small hole is formed in the side wall of the molybdenum crucible installation shell 1 corresponding to the position of the rotating shaft 6, the rotating shaft 6 penetrates through the small hole and extends to the outer side of the molybdenum crucible installation shell 1, and an insertion block 4 is arranged on the outer side, located on the molybdenum crucible installation shell 1, of the rotating shaft 6.

Further, plugging device one includes movable block 13 and extrusion piece 14, and holding tank 12 is close to one side grafting movable block 13 of molybdenum crucible installation shell 1, and the one end that molybdenum crucible installation shell 1 was kept away from to movable block 13 is faced with the lateral wall of holding tank 12 mutually, and one end longitudinal section that movable block 13 is close to molybdenum crucible installation shell 1 is less than other end longitudinal section, and four extrusion pieces 14 of one end fixed mounting that movable block 13 is close to molybdenum crucible installation shell 1.

Further, the second plugging device comprises a second movable block 15 and a second extrusion block 16, the second movable block 15 is inserted into one side of the containing groove 12 far away from the molybdenum crucible installation shell 1, one end, close to the molybdenum crucible installation shell 1, of the second movable block 15 is attached to the side wall of the containing groove 12, the longitudinal section of one end, far away from the molybdenum crucible installation shell 1, of the first movable block 13 is smaller than that of the other end, and the first movable block 13 is far away from the four extrusion blocks 16 fixedly installed at one end of the molybdenum crucible installation shell 1.

Furthermore, two ends of the second extrusion block 16 are inclined planes, and one ends of the two vertical extrusion blocks 16 close to each other correspond to each other. Two ends of the second extrusion blocks 16 are inclined planes, the adjacent ends of the two vertical extrusion blocks 16 correspond to each other, and in the process that the second extrusion blocks 16 extrude towards the center, the adjacent ends of the two vertical extrusion blocks 16 extrude with each other to enable the corners to be extruded and sealed. Further making the solution less likely to enter the mounting groove 8. The two sides of the molybdenum crucible side wall 5 are extruded through the arrangement of the second extrusion block 16 and the first extrusion block 14, so that the molybdenum crucible side wall 5 can be more stably fixed on the molybdenum crucible bottom plate 7.

Further, the accommodating groove 12 accommodates liquid therein.

Further, the inserting block 4 comprises a handle 401, a plug 402 and a U-shaped mounting block 403, the U-shaped mounting block 403 is respectively and fixedly mounted on two sides of the molybdenum crucible mounting shell 1, a mounting cavity is formed in the inside of the U-shaped mounting block 403, the plug 402 is inserted into the U-shaped mounting block 403, one end of the plug 402 close to the molybdenum crucible mounting shell 1 is inserted into the rotating shaft 6, the handle 401 is fixedly mounted at one end of the plug 402 far away from the molybdenum crucible mounting shell 1, the plug 402 is located in the mounting cavity and fixedly mounted with a limiting block 404, two cylinders 405 are symmetrically inserted into two sides of the limiting block 404, the limiting block 404 is connected with the cylinders 405 in a sliding manner, two ends of each cylinder 405 are respectively and fixedly connected with the molybdenum crucible mounting shell 1 and the U-shaped mounting block 403, and springs 406 are sleeved between the side walls of the cylinders 405 and the U-shaped mounting block 403 and the limiting block 404. Pulling handle 401 leftwards, bolt 402 also moves leftwards, stopper 404 extrudes spring 406, stopper 404 moves leftwards, bolt 402 breaks away from pivot 6 and can make molybdenum crucible bottom plate 7 break away from molybdenum crucible installation shell 1, when needing to make molybdenum crucible bottom plate 7 install on molybdenum crucible installation shell 1, unclamping handle 401, spring 406 rebounds, makes bolt 402 insert in pivot 6. The cylinder 405 can enable the limiting block 404 to slide smoothly in the installation cavity.

Further, one end of the latch 402 near the rotating shaft 6 is square, and the rotating shaft 6 is cylindrical. The rotating shaft 6 can rotate in the molybdenum crucible mounting shell 1, and meanwhile, the insertion block 4 is inserted in the rotating shaft 6 in a square shape, so that the molybdenum crucible bottom plate 7 can be stably fixed on the molybdenum crucible mounting shell 1.

The working principle is as follows:

molybdenum crucible bottom plate 7 rotates to be connected on the bottom inner wall of molybdenum crucible installing shell 1, after the experiment, take out lid 2, take out molybdenum crucible lateral wall 5, can conveniently clear up the inner wall of molybdenum crucible lateral wall 5, it can conveniently clean the bottom inner wall of molybdenum crucible to rotate molybdenum crucible bottom plate 7, the one end that bolt 402 is close to pivot 6 is square, pivot 6 is cylindrical, pivot 6 can rotate in the inside of molybdenum crucible installing shell 1, pulling handle 401 left, bolt 402 also moves left, stopper 404 extrudes spring 406, stopper 404 moves left, bolt 402 breaks away from pivot 6 alright in order to make molybdenum crucible bottom plate 7 break away from molybdenum crucible installing shell 1, place molybdenum crucible bottom plate 7 on molybdenum crucible installing shell 1, loosen handle 401, spring 406 kick-backs, make bolt 402 insert in pivot 6. Can make molybdenum crucible bottom plate 7 steady fix on molybdenum crucible installation shell 1, through pressing molybdenum crucible lateral wall 5, peg graft and go up lid 2, the piston 10 of molybdenum crucible lateral wall 5 inside is upwards extruded by "returning the shape" arch 9, it extrudees to the both sides of holding tank 12 to drive the solution of holding tank 12 inside, movable block one 13 and movable block two 15 are extruded both sides, drive extrusion piece one 14 and extrusion piece two 16 extrusion mounting groove 8's inner wall, and simultaneously, the both ends of extrusion piece two 16 are the inclined plane, the one end that two vertically extrusion pieces two 16 are close to is corresponding, in extrusion piece two 16 towards the extruded in-process of center, the place that can make the turning is extruded and sealed to the one end that two vertically extrusion pieces two 16 are close to each other. Therefore, the second extrusion block 16 can seal the gap between the molybdenum crucible side wall 5 and the mounting groove 8, so that the solution in the molybdenum crucible side wall 5 is not easy to enter the mounting groove 8, and the pressing mode is more convenient than the thread mode. The molybdenum crucible with the solution of being convenient for to clean now passes through threaded connection's mode separation bottom plate, and threaded connection is more troublesome, adopts the problem that also can leak some solutions easily in the mode gap of increasing the inside lining.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A molybdenum crucible convenient to clean comprises a molybdenum crucible installation shell (1), a cover body (2), molybdenum crucible side walls (5) and a molybdenum crucible bottom plate (7), wherein the molybdenum crucible bottom plate (7) is rotatably connected to the inner wall of the bottom of the molybdenum crucible installation shell (1), the molybdenum crucible side walls (5) are movably inserted into the molybdenum crucible bottom plate (7), two transverse holes (3) are symmetrically formed in the side wall of the molybdenum crucible installation shell (1), the cover body (2) penetrates through the two transverse holes (3) to be inserted into the molybdenum crucible installation shell (1), the bottom of the molybdenum crucible installation shell (1) is adjacent to the upper portion of the molybdenum crucible side walls (5), an installation groove (8) is formed in the molybdenum crucible bottom plate (7), a square-shaped bulge (9) is fixedly installed in the middle of a loading area, located in the installation groove (8), of the molybdenum crucible side walls (5) are provided with a groove, the recess is corresponding with "shape of returning" arch (9), the inside of molybdenum crucible lateral wall (5) is located the recess top and is provided with holding tank (12), it has piston (10) to peg graft on holding tank (12), the upper and lower both ends cross-section of piston (10) is wider than the cross-section at middle part, piston (10) extend to the recess inside through molybdenum crucible bottom plate (7), the lower extreme and the recess of piston (10) are pasted mutually, the upper end of piston (10) is pasted mutually with the inner wall of holding tank (12), the middle part lateral wall of piston (10) is located the recess inside spring (11) that has cup jointed, the both ends of holding tank (12) are provided with plugging device one and plugging device two.

2. A molybdenum crucible for facilitating cleaning as claimed in claim 1, wherein: two rotating shafts (6) are fixedly mounted on two sides of the molybdenum crucible bottom plate (7), a small hole is formed in the position, corresponding to the rotating shaft (6), of the side wall of the molybdenum crucible mounting shell (1), the rotating shaft (6) penetrates through the small hole to extend to the outer side of the molybdenum crucible mounting shell (1), and an inserting block (4) is arranged on the outer side, located on the molybdenum crucible mounting shell (1), of the rotating shaft (6).

3. A molybdenum crucible for facilitating cleaning as claimed in claim 1, wherein: the first plugging device comprises a first movable block (13) and a first extrusion block (14), the first movable block (13) is inserted into one side of the containing groove (12) close to the molybdenum crucible installation shell (1), one end of the first movable block (13) far away from the molybdenum crucible installation shell (1) is attached to the side wall of the containing groove (12), the longitudinal section of one end of the first movable block (13) close to the molybdenum crucible installation shell (1) is smaller than that of the other end, and the first movable block (13) is close to four first extrusion blocks (14) of one end fixed installation of the molybdenum crucible installation shell (1).

4. A molybdenum crucible for facilitating cleaning as claimed in claim 1, wherein: the second plugging device comprises a second movable block (15) and a second extrusion block (16), the second movable block (15) is inserted into one side of the molybdenum crucible installation shell (1) and is kept away from the accommodating groove (12), one end, close to the molybdenum crucible installation shell (1), of the second movable block (15) is attached to the side wall of the accommodating groove (12), the longitudinal section of one end, far away from the molybdenum crucible installation shell (1), of the first movable block (13) is smaller than that of the other end, and the first movable block (13) is kept away from the four extrusion block (16) of one end fixed installation of the molybdenum crucible installation shell (1).

5. A molybdenum crucible for facilitating cleaning as claimed in claim 4, wherein: two ends of the second extrusion blocks (16) are inclined planes, and one ends, close to each other, of the two vertical extrusion blocks (16) correspond to each other.

6. A molybdenum crucible for facilitating cleaning as claimed in claim 1, wherein: the accommodating tank (12) accommodates a liquid therein.

7. A molybdenum crucible for facilitating cleaning as claimed in claim 2, wherein: the inserting and connecting block (4) comprises a handle (401), a plug (402) and a U-shaped mounting block (403), the U-shaped mounting block (403) is respectively and fixedly mounted at two sides of the molybdenum crucible mounting shell (1), a mounting cavity is formed in the U-shaped mounting block (403) in a hollow mode, the plug (402) is inserted into the U-shaped mounting block (403), one end, close to the molybdenum crucible mounting shell (1), of the plug (402) is inserted into the rotating shaft (6), the handle (401) is fixedly mounted at one end, far away from the molybdenum crucible mounting shell (1), of the plug (402), a limiting block (404) is fixedly mounted on the mounting cavity, two cylinders (405) are symmetrically inserted into two sides of the limiting block (404), the limiting block (404) is connected with the cylinders (405) in a sliding mode, two ends of the cylinders (405) are respectively and fixedly connected with the molybdenum crucible mounting shell (1) and the U-shaped mounting block (403), the side wall of the cylinder (405) is positioned between the U-shaped mounting block (403) and the limiting block (404) and sleeved with a spring (406).

8. The molybdenum crucible as recited in claim 7, wherein the molybdenum crucible is adapted to facilitate cleaning: one end of the bolt (402) close to the rotating shaft (6) is square, and the rotating shaft (6) is cylindrical.