A carbon fiber crucible pot side protection device

Abstract

The present invention relates to the field of crucible heating technology, and in particular to a carbon fiber crucible pot side protection device. The device comprises an outer tube, a crucible, a plurality of infrared heating rings and a plurality of reflection rings. The crucible is rotatably arranged inside the outer tube, the infrared heating rings are located outside the crucible and are evenly spaced in the vertical direction, and the inner ring surface of the reflection ring has an elliptical arc reflection concave surface, and the elliptical arc reflection concave surface and the infrared heating ring are arranged on the outside of the infrared heating ring in a one-to-one correspondence. In the present invention, the relative position of the elliptical arc reflection concave surface and the infrared heating ring is changed by moving the reflection ring up and down, and then after the relative position of the elliptical arc reflection concave surface and the infrared heating ring is changed, the reflection path of the elliptical arc reflection concave surface is changed, so that at least the heat on the outside of the infrared heating ring is reflected to the area on the outer wall of the crucible that is not directly facing the infrared heating ring, so that the energy utilization rate is high and the crucible is heated evenly.

Description

Technical Field

[0001] The invention relates to the technical field of crucible heating, and in particular to a carbon fiber crucible pot side protection device. Background Art

[0002] Crucible is an important part of chemical instruments. It is a container for melting and refining metal liquids, as well as solid-liquid heating and reaction. It is the basis for ensuring the smooth progress of chemical reactions. When heating the crucible, the existing technology mostly uses an annular heating rod for heating. Due to the axial spacing of the heating rings, there is an axial distance between two adjacent heating rings, resulting in uneven axial heating, which affects the crucible heating efficiency and the discharge quality of the smelting furnace. Furthermore, due to the uneven heating, the thermal stress of the crucible pot side is uneven, which easily causes cracks in the crucible. Summary of the invention

[0003] Based on at least one shortcoming of the prior art, the present invention proposes a carbon fiber crucible pot side protection device to solve the problem that when the existing heating equipment heats the crucible, part of the crucible side wall cannot fully receive heat, resulting in uneven heating of the crucible and easy damage to the pot side.

[0004] A carbon fiber crucible pot side protection device of the present invention adopts the following technical solution: comprising an outer cylinder, and also comprising:

[0005] A crucible, which is rotatably arranged inside the outer cylinder along the vertical direction;

[0006] A plurality of infrared heating rings extending in a wave shape along their circumference, with wave crests and wave troughs on the same vertical cylindrical surface, the infrared heating rings being located outside the crucible and evenly spaced in the vertical direction to heat the outer wall of the crucible;

[0007] A plurality of reflection rings, wherein the inner ring surface of the reflection ring has an elliptical arc reflection concave surface, the symmetry plane of the elliptical arc reflection concave surface is horizontally arranged, and is arranged on the outer side of the infrared heating ring in a one-to-one correspondence with the infrared heating ring, so as to reflect the heating light on the outer side surface of the infrared heating ring to the outer wall of the crucible, thereby heating the outer wall of the crucible; and

[0008] The plurality of reflection rings are moved up and down along the outer cylinder through an adjusting structure to change the relative position of the elliptical arc reflection concave surface and the infrared heating ring, and then after the relative position of the elliptical arc reflection concave surface and the infrared heating ring is changed, the reflection path of the elliptical arc reflection concave surface is changed to at least reflect the heat on the outside of the infrared heating ring to the area on the outer wall of the crucible that is not directly facing the infrared heating ring.

[0009] Optionally, a fixed cylinder is arranged inside the outer cylinder and outside the reflective ring, and a side wall of the fixed cylinder is provided with a plurality of adjustment grooves extending along the circumference of the fixed cylinder and obliquely upward, and the plurality of adjustment grooves are arranged at intervals in the vertical direction and in the circumferential direction of the fixed cylinder, and each of the reflective rings is installed in a corresponding adjustment groove;

[0010] The adjustment structure includes an adjustment column and an adjustment block. The adjustment block can be circumferentially slidably arranged on the upper end surface of the fixed cylinder. The adjustment column is arranged on the outside of the fixed cylinder and connects the corresponding reflection ring and the adjustment block, so that when the adjustment block is rotated, the reflection ring is driven to move along the adjustment groove through the adjustment column.

[0011] Optionally, the bottom surface of the adjustment groove includes a plurality of placement planes, which are arranged in sequence and gradually rise along the extension direction of the adjustment groove, and two adjacent placement planes are connected by a connecting slope. The outer ring surface of the reflection ring is provided with a sliding protrusion connected to the adjustment column, and the sliding protrusion is located in the adjustment groove and placed on the placement plane.

[0012] Optionally, a plurality of limiting holes are provided on the upper end surface of the fixing cylinder, and the adjusting block is provided corresponding to the limiting holes and is located in the corresponding limiting holes.

[0013] Optionally, the accommodating space of the crucible is an annular space with an opening facing upward, so that the crucible has an inner wall and a heating space defined by the inner wall, and a central electric heating column is arranged in the heating space to heat the crucible from the inside.

[0014] Optionally, the connecting bottom wall between the lower end of the outer wall of the crucible and the lower end of the inner wall is in a downwardly arched arc, and the outer side of the crucible is provided with a heat-conducting outer crucible side, the heat-conducting outer crucible side includes connected side walls and a bottom concave ring, and the connecting bottom wall is located inside the bottom concave ring.

[0015] Optionally, the inner side of the bottom concave ring extends upward and forms a mounting guide ring at its end for inserting into the heating space, and the end of the middle electric heating column retracts downward and is inserted into the mounting guide ring.

[0016] Optionally, two adjacent infrared heating rings are connected via a positioning column, and the infrared heating ring located at the top is connected to the inner circumferential wall of the outer cylinder via the positioning column.

[0017] Optionally, a motor is disposed at the inner bottom of the outer cylinder, and the heat-conducting outer crucible is connected to an output shaft of the motor via a fixing flange.

[0018] Optionally, a top cover is provided on the top of the outer cylinder, the upper end of the middle electric heating column is connected to the inner center of the top cover, the top cover is connected to the outer cylinder through a fastener, and a power distribution cabinet is provided on the side wall of the outer cylinder.

[0019] The beneficial effects of the present invention are as follows: a carbon fiber crucible pot side protection device of the present invention, by arranging a reflection ring corresponding to the outer side of the infrared heating ring, the inner ring surface of the reflection ring is an elliptical arc reflection concave surface, which can reflect the heating light on the outer side of the infrared heating ring to the outer wall of the crucible, so as to heat the crucible, and the energy utilization rate is high.

[0020] The present invention sets an elliptical arc reflecting concave surface so that the light emitted by the light source located above the symmetric surface of the elliptical arc reflecting concave surface is reflected to the area below the symmetric surface of the elliptical arc reflecting concave surface, and the light emitted by the light source located below the symmetric surface of the elliptical arc reflecting concave surface is reflected to the area above the symmetric surface of the elliptical arc reflecting concave surface, so that the axial gap between two adjacent infrared heating rings can also be fully heated. Further, by adjusting the height of the reflecting ring, the relative position relationship between the elliptical arc reflecting concave surface and the infrared heating ring is changed to adjust the reflection path, and then change the reflection range, so as to adapt to crucibles of different heights, cooperate with the rotation of the crucible, so that the entire crucible is heated, and the entire crucible is heated as evenly as possible, to avoid damage to the crucible side wall (crucible side) caused by excessive difference in thermal stress. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor. Those skilled in the art should understand that these drawings are not necessarily drawn to scale.

[0022] Figure 1 The present invention is a schematic diagram of the overall structure of a carbon fiber crucible pot side protection device.

[0023] Figure 2 The present invention is a partially cutaway stereoscopic view of a carbon fiber crucible pot side protection device.

[0024] Figure 3 for Figure 2 A partial enlarged view of point A in the middle.

[0025] Figure 4 The present invention provides a three-dimensional cross-sectional exploded view of a carbon fiber crucible pot side protection device.

[0026] Figure 5It is a schematic diagram of the fixing cylinder installation adjustment structure in the present invention.

[0027] Figure 6 for Figure 5 A partial enlarged view of point B in the middle.

[0028] Figure 7 It is a schematic diagram of the structure of the infrared heating ring and the reflection ring in the present invention.

[0029] Figure 8 Figure 7 sectional view of .

[0030] Fig. 9 It is a schematic diagram of the structure after the relative positions of the infrared heating ring and the reflection ring in the present invention are changed.

[0031] In the figure: 11, outer cylinder; 12, top cover; 13, fastener; 14, distribution cabinet; 15, lifting ear; 16, motor; 161, fixing flange; 162, output shaft; 20, infrared heating ring; 201, positioning column; 21, reflection ring; 212, elliptical arc reflection concave surface; 213, adjustment column; 214, adjustment block; 216, sliding protrusion; 22, middle electric heating column; 23, crucible; 24, heat-conducting outer crucible side; 241, connecting base; 242, bottom concave ring; 243, installation guide ring; 25, fixing cylinder; 251, adjustment groove; 252, limit hole; 254, placement plane; 255, connecting inclined surface. DETAILED DESCRIPTION

[0032] 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 described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] like Figures 1 to 9As shown, a carbon fiber crucible pot side protection device of the present invention comprises an outer tube 11, a crucible 23, a plurality of infrared heating rings 20 and a plurality of reflection rings 21. The crucible 23 is rotatably arranged inside the outer tube 11 along the vertical direction. Each infrared heating ring 20 extends in a wave shape along its own circumference, and the wave crest and the wave trough are on the same vertical cylindrical surface. A plurality of infrared heating rings 20 are located outside the crucible 23 and are evenly spaced along the vertical direction to heat the outer wall of the crucible 23. The inner ring surfaces of the plurality of reflection rings 21 have an elliptical arc reflection concave surface 212, and the symmetry plane of the elliptical arc reflection concave surface 212 is arranged horizontally. The elliptical arc reflection concave surface 212 is arranged on the outer side of the infrared heating ring 20 in a one-to-one correspondence with the infrared heating ring 20, so as to reflect the heating light on the outer side of the infrared heating ring 20 to the outer wall of the crucible 23, heat the outer wall of the crucible 23, and improve the energy utilization rate.

[0034] The plurality of reflection rings 21 are moved up and down along the outer cylinder 11 by means of an adjustment structure to change the relative position of the elliptical arc reflection concave surface 212 and the infrared heating ring 20, and then after the relative position of the elliptical arc reflection concave surface 212 and the infrared heating ring 20 is changed, the reflection path of the elliptical arc reflection concave surface 212 is changed, so that at least the heat outside the infrared heating ring 20 is reflected to the area on the outer wall of the crucible 23 that is not directly facing the infrared heating ring 20. In other words, by setting the elliptical arc reflection concave surface 212, the light emitted by the light source located above the symmetry plane of the elliptical arc reflection concave surface 212 is reflected to irradiate the area below the symmetry plane of the elliptical arc reflection concave surface 212, and the light emitted by the light source located below the symmetry plane of the elliptical arc reflection concave surface 212 is reflected to irradiate the area above the symmetry plane of the elliptical arc reflection concave surface 212, so that the axial gap between two adjacent infrared heating rings 20 can also be fully heated. Furthermore, by changing the relative position relationship between the elliptical arc reflecting concave surface 212 and the infrared heating ring 20 to adjust the reflection path, and then change the reflection range, the crucible 23 is rotated to make the crucible 23 evenly heated as a whole.

[0035] In this embodiment, a fixed cylinder 25 is arranged inside the outer cylinder 11 and outside the reflection ring 21. The side wall of the fixed cylinder 25 is provided with a plurality of adjustment grooves 251 extending circumferentially and obliquely upward along the fixed cylinder 25. The plurality of adjustment grooves 251 are arranged at intervals in the vertical direction and in the circumferential direction of the fixed cylinder 25, and each reflection ring 21 is installed in a corresponding adjustment groove 251. The adjustment structure includes an adjustment column 213 and an adjustment block 214. The adjustment block 214 is circumferentially slidably arranged on the upper end surface of the fixed cylinder 25. The adjustment column 213 is arranged outside the fixed cylinder 25 and connects the corresponding reflection ring 21 and the adjustment block 214, so that when the adjustment block 214 is rotated, the reflection ring 21 is driven to move along the adjustment groove 251 through the adjustment column 213, thereby causing the reflection ring 21 to move up and down relative to the fixed cylinder 25 and the outer cylinder 11.

[0036] In this embodiment, the bottom surface of the adjustment groove 251 includes a plurality of placement planes 254, which are arranged in sequence and gradually rise along the extension direction of the adjustment groove 251, and two adjacent placement planes 254 are connected by connecting inclined surfaces 255. The outer ring surface of the reflection ring 21 is provided with a sliding protrusion connected to the adjustment column 213, and the sliding protrusion is located in the adjustment groove 251 and placed on the placement plane 254, so that the position of the reflection ring 21 is reliable. The upper end surface of the fixing cylinder 25 is provided with a plurality of limiting holes 252, and the adjustment block 214 is arranged corresponding to the limiting holes 252. By rotating the adjustment block 214, the adjustment block 214 is inserted into the corresponding limiting hole 252, further ensuring that the position of the reflection ring 21 is reliably fixed after adjustment. Specifically, a limiting protrusion is slidably arranged inside the adjusting block 214, and an elastic member is arranged between the limiting protrusion and the adjusting block 214. The elastic member causes the limiting protrusion to protrude from the lower surface of the adjusting block 214. The head of the limiting protrusion is in an arc shape, which facilitates the limiting protrusion to slide out of the limiting hole 252 smoothly.

[0037] In this embodiment, the accommodating space of the crucible 23 is an annular space with an opening facing upward, so that the crucible 23 has an inner wall and a heating space defined by the inner wall. A central electric heating column 22 is provided in the heating space to heat the crucible 23 from the inside to ensure that the crucible 23 is heated evenly.

[0038] In this embodiment, the connecting bottom wall between the lower end of the outer wall of the crucible 23 and the lower end of the inner wall is an arc-shaped downward arch. The outer side of the crucible 23 is provided with a heat-conducting outer crucible side 24. The heat-conducting outer crucible side 24 includes mutually connected side walls and a bottom concave ring 242. The connecting bottom wall is located in the bottom concave ring 242 to facilitate the positioning of the crucible 23.

[0039] The inner side of the bottom concave ring 242 extends upward and forms a mounting guide ring 243 at its end for inserting into the heating space. The end of the middle electric heating column 22 shrinks downward and is inserted into the mounting guide ring 243 .

[0040] In this embodiment, two adjacent infrared heating rings 20 are connected via positioning posts 201 , and the uppermost infrared heating ring 20 is connected to the inner circumferential wall of the outer tube 11 via the positioning posts 201 .

[0041] In this embodiment, the motor 16 is disposed at the inner bottom of the outer cylinder 11, and the heat-conducting outer crucible 24 is connected to the output shaft of the motor 16. Specifically, a connecting base 241 is disposed at the bottom of the heat-conducting outer crucible 24, and a fixing flange 161 is disposed at the end of the output shaft of the motor 16. By connecting the connecting base 241 and the fixing flange 161, the motor 16 drives the heat-conducting outer crucible 24 to rotate, thereby driving the crucible 23 to rotate.

[0042] In this embodiment, a top cover 12 is provided on the top of the outer cylinder 11, and a lifting ear 15 is provided on the upper end of the top cover 12. The upper end of the middle electric heating column 22 is connected to the inner center of the top cover 12. The top cover 12 is connected to the outer cylinder 11 through a fastener 13, so that the outer cylinder 11 is reliably sealed during the heating process. A power distribution cabinet 14 is provided on the side wall of the outer cylinder 11, and the infrared heating ring 20 and the middle electric heating column 22 are electrically connected to the wires in the power distribution cabinet 14. Several infrared heating rings 20 are controlled separately, and the number of infrared heating rings 20 participating in heating can be selected according to the height of the crucible 23, so that energy can be reasonably used.

[0043] In combination with the above embodiments, the use principle and working process of the present invention are as follows: lift the top cover 1212, put the object to be heated into the crucible 23, put the crucible 23 into the outer cylinder 11, and place the crucible 23 in the heat-conducting outer crucible 24. According to the height of the crucible 23, turn the adjustment block 214 to change the axial height position of the reflection ring 21, and after the position is adjusted, the adjustment block 214 is inserted into the appropriate limit hole 252. After the adjustment is completed, align the middle electric heating column 22 with the heating space in the middle of the inner wall of the crucible 23, cover the top cover 12 downward and lock the fastener 13, start the motor button and heating button on the power distribution cabinet 14 to start heating.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A carbon fiber crucible pot side protection device, comprising an outer cylinder, characterized in that: Also includes: A crucible, which is rotatably arranged inside the outer cylinder along the vertical direction; A plurality of infrared heating rings extending in a wave shape along their circumference, with wave crests and wave troughs on the same vertical cylindrical surface, the infrared heating rings being located outside the crucible and evenly spaced in the vertical direction to heat the outer wall of the crucible; A plurality of reflection rings, wherein the inner ring surface of the reflection ring has an elliptical arc reflection concave surface, the symmetry plane of the elliptical arc reflection concave surface is horizontally arranged, and is arranged on the outer side of the infrared heating ring in a one-to-one correspondence with the infrared heating ring, so as to reflect the heating light on the outer side surface of the infrared heating ring to the outer wall of the crucible, thereby heating the outer wall of the crucible; and The plurality of reflection rings are moved up and down along the outer cylinder by the adjustment structure to change the relative position of the elliptical arc reflection concave surface and the infrared heating ring, and then after the relative position of the elliptical arc reflection concave surface and the infrared heating ring is changed, the reflection path of the elliptical arc reflection concave surface is changed to at least make the heat outside the infrared heating ring be reflected to the area on the outer wall of the crucible that is not directly facing the infrared heating ring; A fixed cylinder is arranged inside the outer cylinder and outside the reflective ring, and a plurality of adjustment grooves extending along the circumference of the fixed cylinder and obliquely upward are arranged on the side wall of the fixed cylinder, and the plurality of adjustment grooves are arranged at intervals in the vertical direction and in the circumferential direction of the fixed cylinder, and each reflective ring is installed in a corresponding adjustment groove; The adjustment structure includes an adjustment column and an adjustment block. The adjustment block can be circumferentially slidably arranged on the upper end surface of the fixed cylinder. The adjustment column is arranged on the outside of the fixed cylinder and connects the corresponding reflection ring and the adjustment block, so that when the adjustment block is rotated, the reflection ring is driven to move along the adjustment groove through the adjustment column.

2. A carbon fiber crucible pot side protection device according to claim 1, characterized in that: The bottom surface of the adjustment groove includes a plurality of placement planes, which are arranged in sequence and gradually rise along the extension direction of the adjustment groove, and two adjacent placement planes are connected by a connecting inclined surface. The outer ring surface of the reflection ring is provided with a sliding protrusion connected to the adjustment column, and the sliding protrusion is located in the adjustment groove and placed on the placement plane.

3. A carbon fiber crucible pot side protection device according to claim 1, characterized in that: The upper end surface of the fixing cylinder is provided with a plurality of limiting holes, and the adjusting block is provided corresponding to the limiting holes and is located in the corresponding limiting holes.

4. A carbon fiber crucible pot side protection device according to claim 1, characterized in that: The accommodating space of the crucible is an annular space with an opening facing upward, so that the crucible has an inner wall and a heating space defined by the inner wall. A central electric heating column is arranged in the heating space to heat the crucible from the inside.

5. A carbon fiber crucible pot side protection device according to claim 4, characterized in that: The connecting bottom wall between the lower end of the outer wall and the lower end of the inner wall of the crucible is in a downwardly arched arc shape, and the outer side of the crucible is provided with a heat-conducting outer crucible rib, which includes connected side walls and a bottom concave ring, and the connecting bottom wall is located in the bottom concave ring.

6. A carbon fiber crucible pot side protection device according to claim 5, characterized in that: The inner side of the bottom concave ring extends upward and forms a mounting guide ring at its end for inserting into the heating space, and the end of the middle electric heating column shrinks downward and is inserted into the mounting guide ring.

7. The carbon fiber crucible pot side protection device according to claim 1, characterized in that: Two adjacent infrared heating rings are connected via positioning columns, and the infrared heating ring located at the top is connected to the inner circumferential wall of the outer cylinder via the positioning columns.

8. The carbon fiber crucible pot side protection device according to claim 5, characterized in that: A motor is arranged at the inner bottom of the outer cylinder, and the heat-conducting outer crucible is connected to the output shaft of the motor through a fixing flange.

9. The carbon fiber crucible pot side protection device according to claim 4, characterized in that: A top cover is arranged on the top of the outer cylinder, the upper end of the middle electric heating column is connected to the inner center of the top cover, the top cover is connected to the outer cylinder through a fastener, and a power distribution cabinet is arranged on the side wall of the outer cylinder.

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