Prefabricated body structure of carbon-carbon crucible

Abstract

The utility model relates to the technical field of carbon-carbon crucibles, in particular to a prefabricated body structure of a carbon-carbon crucible, which comprises a crucible prefabricated body, a pulling piece and a bearing piece, the crucible prefabricated body comprises a prefabricated body, the pulling piece is detachably assembled at the bottom of the prefabricated body, the bearing piece is detachably assembled at the top of the prefabricated body, and the bearing piece comprises a clamping frame. The clamping frame is vertically inserted into the top edge of the prefabricated body, an inner supporting cage is vertically fixed to the bottom end of the inner wall of the clamping frame, and adjusting screw holes are evenly and horizontally formed in the outer wall of the clamping frame in a penetrating mode. The lifting frame is pulled to vertically and repeatedly drive the preform to be inserted into a carbon source solution in a reciprocating manner during later impregnation and carbonization, and the crucible preform is repeatedly lifted for impregnation and carbonization, so that the carbon-carbon crucible preform is lifted for multiple times and vertically ascends and descends, and the woven carbon-carbon crucible preform is provided with the bearing part as a supporting component. The carbon-carbon crucible preform is ensured not to deform by pulling, dipping and carbonizing for many times, so that the appearance of the carbon-carbon crucible preform is ensured not to change.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon-carbon crucibles, in particular to a prefabricated structure of a carbon-carbon crucible. Background Art

[0002] Carbon-carbon crucible refers to a crucible made of carbon material. This crucible is widely used in metallurgy, chemical synthesis and other fields requiring high temperature treatment due to its excellent high-temperature performance. Carbon-carbon composite materials generally include graphite, carbon fiber reinforced carbon-based composite materials, etc. These materials are known for their excellent thermal stability, chemical inertness and mechanical strength.

[0003] The existing announcement number is CN217351613U, and its name is a preform structure of a carbon-carbon crucible. The first protective shell and the second protective shell cover the inner and outer surfaces of the prefabricated carbon-carbon crucible body and are connected by acupuncture, so that the first protective shell and the second protective shell are tightly connected to the inner and outer surfaces of the prefabricated carbon-carbon crucible body, thereby ensuring that when chemical deposition is used to increase the density of the carbon-carbon crucible, when the surfaces of the first protective shell and the second protective shell are blocked, a certain thickness of the first protective shell and the second protective shell can be removed in time, so that chemical deposition can be performed again to increase the density, thereby maximizing the density of the finished carbon-carbon crucible. At the same time, the strength of the carbon-carbon crucible is also improved to avoid damage during operation, thereby reducing production costs.

[0004] However, the above-mentioned carbon-carbon crucible preform lacks protective supporting components. The carbon-carbon crucible preform needs to be immersed and carbonized multiple times during preparation, which requires multiple pulling and dipping of the carbon-carbon crucible preform vertically. The woven carbon-carbon crucible preform lacks protective supporting components. Multiple pulling and dipping and carbonization can easily cause the carbon-carbon crucible preform to deform, which in turn causes the shape of the carbon-carbon crucible preform to change. Utility Model Content

[0005] The utility model solves the problems in the related art and proposes a prefabricated structure of a carbon-carbon crucible.

[0006] In order to solve the above technical problems, the utility model is realized through the following technical solutions: a preform structure of a carbon-carbon crucible, including a crucible preform, a pulling piece and a supporting piece, the crucible preform includes a preform, the bottom of the preform can be disassembled and assembled with a pulling piece, and the top of the preform can be disassembled and assembled with a supporting piece, the supporting piece includes a card frame, the card frame is vertically inserted into the top edge of the preform, and the bottom end of the inner wall of the card frame is vertically fixed with an inner support cage, the outer wall of the card frame is uniformly and horizontally penetrated with adjustment screw holes, and the horizontal thread in the adjustment screw hole is penetrated and assembled with an extrusion screw, and the extrusion screw is rotatably connected to a pressure block near one end of the preform, the bottom end of the card frame is assembled and connected to the top of the pulling piece, and the pulling frames are symmetrically and vertically fixed on both sides of the top surface of the card frame.

[0007] As a preferred solution, a carbon fiber mesh layer is provided on the inner wall of the crucible preform, and a mesh winding layer is provided on the inner wall of the carbon fiber mesh layer.

[0008] As a preferred solution, a composite carbon cloth layer is provided on the inner wall of the mesh winding layer, and the carbon fiber web layer, the mesh winding layer and the composite carbon cloth layer are connected by needle punching.

[0009] As a preferred solution, the pulling member includes a pulling frame, which is arranged below the preform, and a plurality of pulling strips are evenly and vertically fixed on the pulling frame.

[0010] As a preferred solution, multiple hole-pulling plates are evenly and vertically arranged on the outer bottom of the card frame, and the top ends of the multiple hole-pulling plates are fixed on the bottom surface of the card frame. Insertion rods are inserted into the hole-pulling plates for horizontal sliding.

[0011] As a preferred solution, a plurality of pull bars are provided with insertion holes running horizontally through the tops thereof, and the insertion holes on the pull bars are slidably plugged into the insertion rods.

[0012] As a preferred solution, a spring is horizontally sleeved on the outside of the insertion rod, and both ends of the spring are respectively fixed to the end of the insertion rod and the hole plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: when the crucible preform is repeatedly pulled back and forth for impregnation and carbonization during use, the card frame of the carrier is inserted into the top surface of the preform, and then the inner support cage is driven to be inserted into the preform, and then the extrusion screw in the adjusting screw hole of the card frame is rotated to drive the pressing block to be squeezed on the outer wall of the preform, completing the assembly of the carrier and the preform, and then a pulling piece is set on the outer bottom surface of the crucible preform during impregnation and carbonization, and the pulling piece lifts the crucible preform Externally, the top of the pulling member is assembled on the card frame of the supporting member. During the later impregnation and carbonization, the pulling frame is pulled back and forth vertically multiple times to drive the preform to be inserted into the carbon source solution, and the crucible preform is pulled back and forth multiple times for impregnation and carbonization, thereby pulling the carbon-carbon crucible preform vertically up and down multiple times. The woven carbon-carbon crucible preform is provided with a supporting member as a supporting component. Multiple pulling and impregnation carbonization ensure that the carbon-carbon crucible preform will not be deformed, thereby ensuring that the shape of the carbon-carbon crucible preform does not change. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the exploded structure of the utility model;

[0016] Figure 3 This is a schematic structural diagram of a crucible preform in a decomposed state according to an embodiment of the present invention;

[0017] Figure 4 This is a schematic structural diagram of the pulling member in the disassembled state according to an embodiment of the present utility model;

[0018] Figure 5 It is a structural schematic diagram of the supporting member in the disassembled state in an embodiment of the present utility model.

[0019] In the figure: 1. Crucible preform; 11. Preform; 12. Carbon fiber mesh layer; 13. Grid winding layer; 14. Composite carbon cloth layer; 2. Pulling member; 21. Pull frame; 22. Pull rod; 23. Insertion hole; 3. Bearing member; 31. Card frame; 32. Inner support cage; 33. Adjustment screw hole; 34. Extrusion screw; 341. Pressing block; 35. Pulling plate; 36. Insertion rod; 37. Spring; 38. Pulling frame. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0022] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0023] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0024] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0025] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0026] like Figures 1 to 5As shown, a preform structure of a carbon-carbon crucible includes a crucible preform 1, a pulling piece 2 and a supporting piece 3. The crucible preform 1 includes a preform 11. The bottom of the preform 11 can be disassembled and assembled with a pulling piece 2, and the top of the preform 11 can be disassembled and assembled with a supporting piece 3. The supporting piece 3 includes a card frame 31. The card frame 31 is vertically plugged into the top edge of the preform 11, and the bottom end of the inner wall of the card frame 31 is vertically fixed with an inner support cage 32. The outer wall of the card frame 31 is An adjusting screw hole 33 is uniformly and horizontally penetrated on the upper surface, and an extrusion screw 34 is assembled through the horizontal thread in the adjusting screw hole 33, and the extrusion screw 34 is rotatably connected to the pressure block 341 at one end close to the preform 11. The bottom end of the card frame 31 is assembled and connected to the top of the pulling member 2, and the top surface of the card frame 31 is symmetrically and vertically fixed with a pulling frame 38 on both sides. When the crucible preform 1 is pulled back and forth multiple times for impregnation and carbonization, the top surface of the preform 11 is The cam 32 is then pulled back and forth to push the preform 11 into the groove 34, and the cam 32 is pulled back and forth to push the preform 11 into the groove 34, so that the cam 32 is lifted and pushed back and forth to push the preform 11 into the groove 34.

[0027] In one embodiment, Figure 2 and 3 As shown, a carbon fiber mesh layer 12 is provided on the inner wall of the crucible preform 1, and a grid winding layer 13 is provided on the inner wall of the carbon fiber mesh layer 12, and a composite carbon cloth layer 14 is provided on the inner wall of the grid winding layer 13. The carbon fiber mesh layer 12, the grid winding layer 13 and the composite carbon cloth layer 14 are connected by acupuncture. When the carbon fiber mesh layer 12, the grid winding layer 13 and the composite carbon cloth layer 14 are acupunctured, a needle with a thicker needle handle diameter is used for acupuncture. The needle is usually C333 type 14×16×36×3. The use of this needle can better increase the interlayer bonding strength. The acupuncture density is controlled at 30-35 needles / cm2, and the porosity is controlled at 60-70%.

[0028] In one embodiment, Figure 2 and 3As shown, the pulling member 2 includes a pulling frame 21, which is arranged below the preform 11, and a plurality of pulling strips 22 are evenly and vertically fixed on the pulling frame 21. A plurality of pulling hole plates 35 are evenly and vertically arranged on the outer bottom of the card frame 31, and the tops of the plurality of pulling hole plates 35 are fixed on the bottom surface of the card frame 31. The pulling hole plates 35 are horizontally slidably penetrated and inserted with an insertion rod 36. The tops of the plurality of pulling strips 22 are horizontally penetrated with an insertion hole 23, and the insertion holes 23 on the pulling strips 22 are slidably inserted into the insertion rod 36. Then, a spring 37 is horizontally sleeved on the outside of the insertion rod 36, and the two ends of the spring 37 are respectively fixed to the end of the insertion rod 36 and the pulling hole plate 35. When assembling the pulling member 2 and the supporting member 3 during use, the insertion rod 36 on the pulling hole plate 35 is pulled to slide horizontally, squeezing the spring 37 to deform, and then the pull bar 22 on the pull frame 21 is pulled, and the insertion rod 36 is released. Under the action of the deformation force of the spring 37, the insertion rod 36 is pushed to be inserted into the socket 23 of the pull bar 22, completing the assembly of the pulling member 2 and the supporting member 3.

[0029] In this embodiment, when the crucible preform 1 is pulled back and forth multiple times for impregnation and carbonization during use, the clamping frame 31 of the supporting member 3 is inserted into the top surface of the preform 11, and then the inner support cage 32 is driven to be inserted into the preform 11, and then the extrusion screw 34 in the adjusting screw hole 33 of the clamping frame 31 is rotated to drive the pressing block 341 to be squeezed on the outer wall of the preform 11, completing the assembly of the supporting member 3 and the preform 11, and then during impregnation and carbonization, a pulling member 2 is set on the outer bottom surface of the crucible preform 1, and the pulling member 2 lifts the outside of the crucible preform 1, and the top of the pulling member 2 is assembled on the clamping frame 31 of the supporting member 3, and during the later impregnation and carbonization, the pulling frame 38 is pulled back and forth vertically multiple times to drive the preform 11 to be inserted into the carbon source solution, and the crucible preform 1 is pulled back and forth multiple times for impregnation and carbonization, thereby pulling the carbon-carbon crucible preform vertically up and down multiple times.

[0030] The above is a preferred embodiment of the present invention. Technicians in the field of the present invention can also change and modify the above embodiment. Therefore, the present invention is not limited to the above specific embodiment. Any obvious improvements, replacements or modifications made by technicians in this field on the basis of the present invention are within the scope of protection of the present invention.

Claims

1. A preform structure of a carbon-carbon crucible, characterized in that: The crucible preform (1) comprises a crucible preform (1), a pulling piece (2) and a supporting piece (3), wherein the crucible preform (1) comprises a preform (11), the bottom of the preform (11) is detachably assembled with the pulling piece (2), and the top of the preform (11) is detachably assembled with the supporting piece (3), and the supporting piece (3) comprises a card frame (31), the card frame (31) is vertically plugged into the top edge of the preform (11), and the bottom end of the inner wall of the card frame (31) is vertically fixed. An inner support cage (32) is fixed, and an adjusting screw hole (33) is uniformly and horizontally opened on the outer wall of the clamping frame (31), and an extrusion screw rod (34) is assembled through the horizontal thread in the adjusting screw hole (33), and the extrusion screw rod (34) is rotatably connected to a pressure block (341) at one end close to the preform (11), the bottom end of the clamping frame (31) is assembled and connected with the top end of the pulling member (2), and pulling frames (38) are symmetrically and vertically fixed on both sides of the top surface of the clamping frame (31).

2. The preform structure of a carbon-carbon crucible according to claim 1, characterized in that: A carbon fiber mesh layer (12) is provided on the inner wall of the crucible preform (1), and a mesh winding layer (13) is provided on the inner wall of the carbon fiber mesh layer (12).

3. The preform structure of a carbon-carbon crucible according to claim 2, characterized in that: A composite carbon cloth layer (14) is provided on the inner wall of the mesh winding layer (13), and the carbon fiber web layer (12), the mesh winding layer (13) and the composite carbon cloth layer (14) are connected by needle punching.

4. The preform structure of a carbon-carbon crucible according to claim 3, characterized in that: The pulling member (2) comprises a pulling frame (21), the pulling frame (21) is arranged below the preform (11), and a plurality of pulling strips (22) are evenly and vertically fixed on the pulling frame (21).

5. The preform structure of a carbon-carbon crucible according to claim 4, characterized in that: A plurality of hole-pulling plates (35) are evenly and vertically arranged on the outer bottom of the card frame (31), and the top ends of the plurality of hole-pulling plates (35) are fixed on the bottom surface of the card frame (31). A plug rod (36) is inserted and inserted through the hole-pulling plates (35) in a horizontally sliding manner.

6. The preform structure of a carbon-carbon crucible according to claim 5, characterized in that: A plug hole (23) is horizontally provided through the top of the plurality of pull bars (22), and the plug hole (23) on the pull bar (22) is slidably plugged with the plug rod (36).

7. The preform structure of a carbon-carbon crucible according to claim 6, characterized in that: A spring (37) is horizontally sleeved on the outside of the insertion rod (36), and two ends of the spring (37) are respectively fixed to the end of the insertion rod (36) and the hole-pulling plate (35).

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