CN220597693U - Carbon fiber combined crucible with diamond braiding mode - Google Patents

Abstract

The utility model discloses a diamond-shaped weaving carbon fiber combined crucible, and relates to the technical field of crucibles. The utility model comprises a crucible bottom and a crucible top; the crucible is braided by at least one carbon fiber rope or carbon fiber belt, the upper end and the lower end of the crucible are circular rings formed by twisting in a twist shape, and an annular net structure is formed between the two circular rings in a cross winding mode; the upper end of the crucible bottom adopts a step structure which is arranged in a surrounding way, and the bottom of the crucible is seated on the step structure; the crucible bottom adopts an integral or multi-petal type crucible bottom. The carbon rope braided crucible of the net structure of the utility model can avoid the loss of the integral crucible structure in the machining process on the premise of ensuring the product performance index, has light weight compared with the existing crucible structure, and greatly reduces the material cost and the machining cost; the diamond holes are favorable for knocking and crushing the quartz crucible from outside to inside when the quartz crucible is separated from the quartz crucible later, so that the use efficiency and the service life of the carbon-carbon crucible are improved.

Description

Carbon fiber combined crucible with diamond braiding mode

Technical Field

The utility model belongs to the technical field of crucibles, and particularly relates to a diamond-shaped weaving carbon fiber combined crucible.

Background

With the rapid development of solar cells, the demand for single crystal silicon is being pulled. The crucible, which is an important thermal field component for producing single crystal silicon or single crystal rods, has also been rapidly developed, and the quartz crucible, which is loaded with polycrystalline silicon in a single crystal silicon furnace, is softened during the melting of the silicon material, and it is necessary to provide a load to the inner quartz crucible through the outer crucible. At present, most of the crucible materials at home and abroad adopt integral carbon materials or isostatic pressing graphite materials, and the preparation process is mature, but the traditional process has longer deposition period and high manufacturing cost, so that the market demand can not be met.

In addition, silicon vapor, silicon-containing gas and silicon dioxide forming main components of the quartz crucible in a high-temperature environment of a thermal field all react with the carbon-carbon crucible, so that the quartz crucible and an external integral carbon-carbon crucible are adhered together and are difficult to separate after cooling, and most manufacturers break the inner wall of the quartz crucible in a violent knocking manner and then separate the quartz crucible from the carbon-carbon crucible; this will greatly increase the operating costs of the enterprise due to the higher cost of the carbon-carbon crucible. In order to solve the above problems, a related art of a mesh crucible is proposed; the technical proposal of the supporting crucible is as the publication number is CN 201614431U; the proposal adopts an integrated or upper and lower two-layer reticular crucible structure; in another patent name of CN218539883U, a combined crucible and a single crystal furnace using the crucible are disclosed, wherein the scheme adopts an integral crucible or a split crucible with a net structure for covering an inner crucible; the mesh structure has the defect of complex structure knitting compared with the mesh knitting structure adopted only at the position of the crucible, because the mesh structure does not specifically give out the specific shape of meshes and the knitting mode of the meshes or adopts the mesh structure at the lower part of the crucible bottom; moreover, since the carbon-carbon crucible is generally provided with an opening at the bottom, when the carbon-carbon crucible is separated from the quartz crucible, the quartz crucible is generally knocked upwards through the opening position and is knocked inwards through the meshed holes of the crucible, and therefore, the adoption of a solid structure with the opening for the crucible bottom position is more advantageous than the adoption of a meshed structure on the premise of ensuring the strength, durability and stability of the support of the bottom of the quartz crucible.

Disclosure of Invention

The utility model provides a diamond-shaped weaving carbon fiber combined crucible, which is characterized in that at least one carbon fiber rope or a carbon fiber belt is used for weaving, the upper end and the lower end of the crucible are circular rings formed by twisting in a twist shape, an annular net structure is formed between the two circular rings in a cross winding mode to serve as a crucible body, the structure is easy to weave and shape, the problem that the carbon-carbon composite crucible and the quartz crucible with the existing integral structure are difficult to separate and have short service life can be solved, the carbon-carbon composite crucible with the traditional structure is produced by adopting a carbon-carbon prefabricated body, the processing time is long, the period required by subsequent deposition is long, and the manufacturing cost is high; the crucible bottom is of an integral or multi-piece type, has better supporting strength, durability, stability and service life relative to the crucible bottom of a net structure, does not influence separation from a quartz crucible, improves service life and efficiency, and solves the problems in the background art.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

the utility model relates to a diamond-shaped braided carbon fiber combined crucible, which comprises a crucible bottom and a crucible body;

crucible position: the method comprises the steps of braiding at least one carbon fiber rope or carbon fiber belt, twisting the upper end and the lower end of the carbon fiber rope or the carbon fiber belt into circular rings, and forming an annular net structure between the two circular rings in a cross winding mode;

crucible bottom: the upper end adopts a step structure which is arranged in a surrounding way, and the bottom of the crucible is arranged on the step structure.

Further, the mesh of the annular net structure is of an equilateral diamond shape.

Further, the weaving end point of the crucible is fastened by carbon fiber wires after penetrating to the starting point.

Further, the crucible bottom is an integral or multi-petal type crucible bottom.

Compared with the prior art, the utility model has the following beneficial effects:

(1) The crucible of the traditional integral graphite or carbon composite material is replaced by adopting the mode of braiding the crucible and the crucible bottom by the carbon rope or the carbon belt with the net structure, so that the raw material loss of the integral crucible structure in the machining process can be avoided on the premise of ensuring the product performance index, and compared with the traditional integral crucible structure, the integral crucible structure has the characteristics of light weight and less material consumption, and the time required for subsequent hardening and vapor deposition is greatly reduced, so that the material cost and the machining cost are reduced;

(2) The carbon rope or the carbon belt weaved crucible position structure is exquisite in structure, diamond holes formed by the carbon rope or the carbon belt cross weaving at the middle part of the crucible position are beneficial to separating from a quartz crucible later, and the reason is that the quartz crucible can be knocked and broken from outside to inside instead of the traditional integral crucible which is knocked from inside to outside, so that the situation that the carbon crucible is damaged and cannot be reused is avoided, and the use efficiency and the service life of the carbon crucible are improved; the knitting structure of the crucible is simple and the operability is good;

(3) The carbon rope or the carbon belt braided crucible band with the reticular structure adopts a mode of directly sitting on the crucible bottom to form the combined crucible, so that the combined crucible is convenient to assemble, use and disassemble, and the normal replacement and use of the other part are not influenced when the single crucible band or the single crucible bottom is damaged;

(4) The crucible bottom adopts the integral or multi-petal type crucible bottom, has better supporting strength, durability, stability and service life compared with the crucible bottom with a net structure, does not influence the separation from the quartz crucible, and improves the service life and the efficiency.

Of course, it is not necessary for any one product to practice the utility model to achieve all of the advantages set forth above at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of 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 utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a diamond-shaped woven carbon fiber composite crucible according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the structure of the crucible of FIG. 1;

FIG. 3 is a schematic view of the structure of a monolithic crucible bottom of FIG. 1;

FIG. 4 is a schematic view of a split type crucible bottom structure;

fig. 5 is a top view of a connection structure of a crucible pan to a crucible bottom according to an embodiment;

fig. 6 is a top view of another example of a connection between a plate and a bottom;

fig. 7 is a top view of a third plate and bottom junction structure of an embodiment;

FIG. 8 is a diagram of a braiding state of a braiding tool for fabricating a corresponding carbon fiber crucible band of the present utility model;

FIG. 9 is a schematic view of the structure of the view angle A in FIG. 8;

FIG. 10 is a schematic structural view of a braiding tool for fabricating a corresponding carbon fiber crucible of the present utility model;

FIG. 11 is a front elevational view of the structure of FIG. 10;

FIG. 12 is a schematic view of a blade combined with a round bar;

FIG. 13 is an illustration of one initial motion of braiding carbon fiber crucible plates according to an embodiment;

fig. 14 is an explanatory view of a further knitting operation based on fig. 13;

FIG. 15 is an illustration of a finishing stage of a knitting motion completed based on FIG. 14;

in the drawings, the list of components represented by the various numbers is as follows:

1-crucible position, 101-circular ring, 2-crucible bottom, 201-step structure, 202-strapping tape, 203-second through hole, 3-coaming, 301-scraper blade, 302-step structure, 303-first through hole, 304-third through hole, 305-round bar, 306-plug hole, 4-connecting rod, 401-threaded end, 402-nut.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "two ends," "upper end," "step," "surrounding," "end point," "starting point," and the like indicate an orientation or positional relationship, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to fig. 1, the diamond-shaped braided carbon fiber combined crucible of the utility model comprises a crucible bottom 2 and a crucible top 1;

as shown in fig. 2, crucible position 1: in the embodiment, a carbon fiber rope is preferably adopted for weaving, the upper end and the lower end of the carbon fiber rope are circular rings 101 formed by twisting twist, and an annular net structure 102 is formed between the two circular rings in a cross winding mode; the mesh of the annular mesh structure 102 is specifically an equilateral diamond; of course, the carbon fiber belts can be woven into the same structure, and the technical scheme is also adopted; under the load of a fixture, the equilateral diamond-shaped meshed crucible nation 1 of the carbon fiber rope after being woven respectively carries out the procedures of densification, hardening, vapor deposition and the like in the prior art, so that the reinforcement of a structural matrix and the stability of the structure are realized, and the surface of the structural matrix is in a hard state;

as shown in fig. 3, the crucible bottom 2 adopts an integrated crucible bottom: the upper end adopts a step-shaped structure 201 which is arranged in a surrounding way, and the bottom of the crucible band 1 is seated on the step-shaped structure 201; the crucible bottom 2 can be directly formed by processing the existing crucible bottom of the crucible;

as shown in fig. 4, split type crucible bottom is adopted for the crucible bottom 2: the upper end adopts a step-type structure 201 which is arranged in a surrounding manner, split-type crucible bottoms are spliced into a whole by four split-type splicing blocks, and are bound by a binding belt 202 which is arranged in a surrounding manner on the outer periphery side, wherein the binding belt 202 can be a carbon fiber rope or a carbon fiber belt, at least 1 binding belt is adopted in binding, and a limit groove is arranged in a surrounding manner on the outer side part of the split-type crucible bottoms in an adaptive manner, so that the binding belt can be well kept in binding limit; the split structure and the form and the material of the strapping 202 are only one example, and other split structures can achieve the same technical effect, and the split structure also belongs to the protection scope of the technical scheme;

as shown in fig. 5, in a specific embodiment, the step structure 201 adopts a zigzag step, and the outer diameter of the crucible position 1 is smaller than the outer diameter of the top end of the crucible bottom 2, so that the crucible position 1 is just seated on the step structure 201, the crucible position 1 and the crucible bottom 2 are not easy to misplace and separate, and the crucible position 1 and the crucible bottom 2 are always kept coaxially arranged;

as shown in fig. 6, the same anti-dislocation separation effect can be achieved by the step structure 201 using the reverse zigzag step opposite to that of fig. 4, and at this time, the crucible band 1 sits just on the reverse zigzag step, and the anti-dislocation separation effect can be achieved by means of the reverse zigzag step;

as shown in fig. 7, the same dislocation preventing and separating effect can be achieved by adopting the middle concave symmetrical step in the step structure 201, and at this time, the crucible band 1 sits just on the middle concave symmetrical step, and the dislocation preventing and separating effect can be achieved by means of the opposite middle concave symmetrical step;

8-11, a schematic diagram of a braiding tooling structure of a crucible body 1 of a carbon fiber combined crucible in a diamond braiding mode is shown; the tool adopts a graphite or carbon material part design, is assembled in a splicing mode, and is convenient for replacing vulnerable parts in the later period so as to prolong the service life of the tool;

as shown in fig. 10-11, the fixture comprises surrounding plates 3 which are connected in a surrounding manner, wherein the upper end and the lower end of each adjacent surrounding plate 3 are clamped and fixed by matching a scraper 301 with a connecting rod 2, the upper end and the lower end of each surrounding plate 3 are provided with inward scrapers 301, the two sides of each scraper 301 are provided with ladder structures 302, the ladder structures 302 on the two sides are of a structure which is embedded up and down, the ladder structures 302 are fixedly connected by matching a carbon-carbon composite screw with a first through hole 303 formed in the surface, and the ladder structures 302 are arranged in the middle of the end face of each surrounding plate 3; the coaming 3, the arc scraping plate 301 and the round bar 305 are all made of carbon-carbon composite materials; the surrounding plates 3 connected with the carbon rope play a supporting role, so that the inner diameter of the knitting crucible is ensured to meet the requirements of customers; the surfaces of the upper arc scraping plates 301 and the lower arc scraping plates 301 of the same coaming plate 3 are respectively provided with a second through hole 203 close to the middle, a connecting rod 2 is connected between the two second through holes 203, two ends of the connecting rod 2 are threaded ends 201, and the threaded ends 201 pass through the second through holes 203 and then rotate through nuts 202 made of carbon-carbon composite materials to compress the scraping plates 301, the coaming plate 3 and the round bars 305; for convenience in rotation, in the embodiment, the cross section of the middle part of the connecting rod 2 is preferably square, and other cross section should be in the protection scope of the patent; in the embodiment, the coaming 3 is specifically designed into 8 sections, 8 corresponding connecting rods 2 are also provided, the coaming 3 is an arc coaming, a cylindrical structure is formed by encircling, the corresponding scraping plate 301 is also an arc scraping plate, and a circular ring structure is formed by encircling; the surface of the scraper 301, which is attached to the coaming 3, is surrounded by the insertion hole 306, the insertion hole 306 is shaped like a door opening, the insertion hole 306 is internally inserted with the round rod 305, the round rod 305 adopts a carbon-carbon polished rod round rod for ensuring convenient pulling out, the door opening-shaped structure is beneficial to smoothly taking out the round rod 305 after subsequent solidification and vapor deposition, and the situation that the components in the hole are difficult to pull out due to filling holes of a deposited substance in the traditional tool is avoided; the plugging holes 306 located at the step structure 302 are formed by overlapping each other after being embedded, as shown in fig. 11;

third through holes 304 are uniformly formed in the circumferential direction on the circular arc surface of the coaming 3, so that the weight of the tooling is reduced, and the uniform air flow passing rate in the hardening and depositing processes is increased;

as shown in fig. 13-15, the method for using the tool comprises the following steps:

circular ring 101 braiding and annular net structure 102 braiding of the end parts without limitation of the sequence from front to back are performed by using one carbon fiber rope or carbon fiber belt; in the specific embodiment, the annular net structure 102 is woven firstly, and then the annular net structure 101 at the end part is woven;

first, the endless mesh structure 102 is woven: a carbon fiber rope or a carbon fiber belt is used, a certain number of round rods 305 are downwards spaced from the end of a round rod 305 made of carbon material and then wound on a certain round rod 305 at the lower end, and the round rod 305 is upwards wound on a certain round rod 305 at the upper end again, in the specific embodiment, the spacing distance is the distance of five carbon-carbon round rods 305, and the starting position is from bottom to top, so that the same technical effect can be generated, and the technical scheme also belongs to the protection scope of the technical scheme; starting around the second circle, and performing cross braiding on the carbon fiber ropes or carbon fiber belts wound around the back and the carbon fiber ropes or carbon fiber belts attached to the preamble to form a net structure;

then, knitting the end circular ring 101, specifically, inserting two circles of circular ring 101 structures around two circles between two adjacent round bars 305 at the upper end or the lower end to form the end arranged at the upper end and the lower end at the tail end and the beginning end after forming the annular net structure 102;

then, the carbon fiber rope or the carbon fiber belt returns to the initial braiding position, the head reserved at the tail section and the initial end is fastened by carbon wires, braiding molding is completed, and the carbon fiber net with a reinforced matrix and a stable structure is achieved through the procedures including densification, hardening and vapor deposition;

finally, the carbon fiber web is removed: the nut 202 is rotated and separated from the connecting rod 2, so that the scraping plate 301 can be loosened and separated from the upper end and the lower end of the coaming plate 3, and at this time, the round bar 305 is taken down from the open inserting hole 306, namely, the whole solidified carbon fiber net can be easily taken down.

The carbon fiber net after hardening is used as the crucible of the crucible, so that the crucible has the advantages of light weight, convenience in charging, easiness in separating the quartz crucible, and capabilities of prolonging the service life of the crucible by multiple times and reducing the enterprise cost; the weaving method of the carbon fiber weaving tool structure is simple, can be efficiently and quickly completed by only one worker, can realize standardized output of the carbon fiber net structure, and is beneficial to large-scale and standardized production operation; the tooling for splicing and assembling can quickly replace accessories according to the sizes of different products, realize half-hour quick replacement, facilitate grasping the size of the woven crucible, and greatly improve the utilization rate of tooling components.

The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims (4)

1. The utility model provides a carbon fiber combination formula crucible of mode is woven to diamond, includes crucible end (2) and crucible nation (1), its characterized in that:

crucible position (1): the method comprises the steps of braiding at least one carbon fiber rope or carbon fiber belt, twisting the upper end and the lower end of the carbon fiber rope or carbon fiber belt into circular rings (101), and forming an annular net structure (102) between the two circular rings in a cross winding mode;

crucible bottom (2): the upper end adopts a step structure (201) which is arranged in a surrounding way, and the bottom of the crucible upper (1) is seated on the step structure (201).

2. The diamond-woven carbon fiber composite crucible according to claim 1, wherein the mesh of the ring-shaped mesh structure (102) is isosceles diamond.

3. The diamond-shaped braided carbon fiber composite crucible of claim 1, wherein carbon fiber filaments are used for fastening after the braiding end point of the crucible band (1) is penetrated to the starting point.

4. The diamond-shaped braided carbon fiber composite crucible according to claim 1, wherein the crucible bottom (2) is an integral or multi-piece crucible bottom.