CN209941145U - Improved vacuum gem growth furnace - Google Patents
Improved vacuum gem growth furnace Download PDFInfo
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- CN209941145U CN209941145U CN201920123702.7U CN201920123702U CN209941145U CN 209941145 U CN209941145 U CN 209941145U CN 201920123702 U CN201920123702 U CN 201920123702U CN 209941145 U CN209941145 U CN 209941145U
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- crucible
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Abstract
The utility model belongs to the technical field of crystal production and processing equipment, in particular to an improved gem vacuum growth furnace for gem production and processing. Establish the bell at the stove outer covering top including stove outer covering and lid, install crucible and heater in the stove outer covering, just the crucible is arranged in outward to the heater, install the seed rod that stretches into in the stove outer covering on the stove outer covering, seed rod is located the crucible top, the heat preservation ring has been place at the crucible top, the inner chamber and the crucible inner chamber intercommunication formation precious stone of heat preservation ring place the chamber, the precious stone is placed the intracavity and is filled there is heat preservation sand, heat preservation ring top lid is equipped with the heat preservation and covers. The utility model has the advantages that: the growth furnace can realize the function switching of jewel growth and annealing fast, and the function is diversified, has improved the rate of utilization, and the cost is reduced improves the annealing effect of jewel through heat preservation ring, heat preservation lid, heat preservation sand cooperation, has guaranteed the quality of jewel.
Description
Technical Field
The utility model belongs to the technical field of crystal production and processing equipment, in particular to an improved gem vacuum growth furnace for gem production and processing.
Background
The internal stress of the color gem crystal is reduced by annealing after the growth of the color gem crystal is finished in a growth furnace, so that the gem is not cracked or the cracking is reduced in the subsequent processing, and the machinability and the utilization rate of the gem are improved. However, the vacuum annealing furnace with a large enough inner container in the market is expensive and high in cost. The traditional gem growth furnace has a relatively large longitudinal temperature gradient in design, the gem annealing temperature is as high as 1750 ℃, the gem is easy to melt due to overhigh bottom temperature of the growth furnace, or the annealing effect cannot be achieved due to overlow temperature, so the traditional growth furnace cannot be directly used for the gem annealing process. In addition, the crucible height of the growth furnace is fixed, the requirements of the gem crystal growth process and the annealing process on the crucible height are different, and the crucible height of the traditional growth furnace cannot adapt to the annealing requirements of gems with different heights.
SUMMERY OF THE UTILITY MODEL
In view of the above shortcomings of the prior art, an object of the present invention is to provide an improved vacuum gem growth furnace, which is used for solving the problems of single function, high gem production and processing cost, poor annealing effect, etc. of the gem growth furnace in the prior art.
In order to realize above-mentioned purpose and other relevant mesh, the utility model provides an improved generation precious stone vacuum growth stove, establish the bell at the stove outer covering top including stove outer covering and lid, install crucible and heater in the stove outer covering, just the crucible is arranged in outward to the heater, install the seed crystal pole that stretches into in the stove outer covering on the stove outer covering, seed crystal pole is located the crucible top, the heat preservation ring has been place at the crucible top, the inner chamber and the crucible inner chamber intercommunication formation precious stone of heat preservation ring place the chamber, the precious stone is placed the intracavity and is filled and is had heat preservation sand, heat preservation ring top lid is equipped with the heat preservation and covers.
The utility model has the advantages that: the growth furnace can realize the function switching of jewel growth and annealing fast, and the function is diversified, has improved the rate of utilization, and the cost is reduced improves the annealing effect of jewel through heat preservation ring, heat preservation lid, heat preservation sand cooperation, has guaranteed the quality of jewel.
Furthermore, the bottom of the furnace shell is provided with a support which supports the crucible against the bottom of the crucible, the shape of the heater is matched with that of the crucible, the heater is arranged at the outer side and the bottom of the crucible in a surrounding manner, and the top of the heater is provided with a heat preservation screen.
Further, the heater is an electric heater, and a heating frame surrounded outside the crucible by the heater is made of a tungsten rod.
Further, the heating device also comprises insulating bricks, wherein the insulating bricks surround the outer wall and the bottom of the heater.
The beneficial effect of adopting the further scheme is that: the bottom of the crucible is supported by the support column, so that the crucible is suspended, a heater and a heat-insulating brick at the bottom of the crucible are convenient to arrange, and the properties of heating, heat insulation and the like of the crucible are improved; the electric heater is adopted, the heating temperature can be conveniently adjusted according to the requirement, the temperature adjustment is flexible and convenient, and the control difficulty of the heating temperature is reduced.
Furthermore, the heat preservation ring comprises three ring clacks spliced end to end, wherein a convex block is convexly arranged at the head end of each ring clack, and a groove matched with the convex block in shape is concavely arranged at the tail end of each ring clack.
Further, the heat preservation cover includes the apron of two concatenations, the protruding spacing portion that stretches into the heat preservation ring inner chamber that is equipped with in bottom of apron.
Further, the heat preservation ring and the heat preservation cover are made of zirconium oxide.
The beneficial effect of adopting the further scheme is that: the heat preservation ring and the heat preservation cover made of zirconia are heavy, are not easy to generate displacement by oneself after being placed in place, are stable to place, are of an assembly structure, are convenient to disassemble and assemble, and reduce the disassembling and assembling difficulty.
Further, the heat-insulating sand comprises a bedding layer, a gem fixing layer and a covering layer which are sequentially distributed from bottom to top.
Further, the heat-preservation sand is alumina sand, and the particle diameter of the heat-preservation sand is 2mm-3 mm.
Further, the thickness of the bedding layer is 6cm-10cm, and the thickness of the covering layer is 1cm-3 cm.
The beneficial effect of adopting the further scheme is that: the paving layers, the gem fixing layers and the covering layers with different heights are provided with proper thicknesses, so that the problem of large longitudinal temperature gradient of the growth furnace is solved, the annealing quality of the gem is guaranteed, and the gem is stably placed in the crucible through heat preservation sand.
Drawings
FIG. 1 is a schematic structural view of an improved vacuum gem growth furnace according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a heat retaining ring according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a ring segment according to an embodiment of the present invention;
FIG. 4 is a front view of the heat retaining cover according to the embodiment of the present invention;
fig. 5 is a top view of the heat preservation cover according to the embodiment of the present invention.
Description of reference numerals
11, furnace shell;
12, furnace cover;
13 a support post;
2, a crucible;
31 seed rods;
32 seed crystal clamps;
4, a heat preservation cover;
41 a cover plate;
411 a limiting part;
51 electrodes;
52 a heater;
53 heat preservation screen;
61, paving a cushion layer;
62 a fixed layer of gemstone;
63 a cover layer;
7, a heat preservation ring;
71 a ring flap;
711 groove;
712 bumps;
8, a gem;
9 insulating brick.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
It should be understood that the terms "upper", "lower", "left", "right", "middle" and "one" used herein are for clarity of description, and are not intended to limit the scope of the invention, but rather the scope of the invention.
As shown in FIG. 1, the improved vacuum gem growth furnace of the embodiment of the invention comprises a furnace shell 11 and a furnace cover 12 arranged on the top of the furnace shell 11, wherein a crucible 2 and a heater 52 are arranged in the furnace shell 11, and the heater 52 is arranged outside the crucible 2. The support 13 is arranged at the bottom of the furnace shell 11, the support 13 supports the crucible 2 at the bottom of the crucible, so that a gap is reserved between the bottom of the crucible and the bottom of the furnace shell, a heater and an insulating brick are arranged at the bottom of the crucible, the heating effect and the heat insulation effect are ensured, and the growth quality and the annealing quality of the jewel are improved. The shape of the heater 52 is matched with that of the crucible 2, the heater 52 is arranged around the outer side and the bottom of the crucible 2, and the heater can be supported and fixed through a support. The heater may be an electric heater, and the heater 52 is guided to generate heat by the electrode 51, and the electric heater is adopted to adjust the heating temperature by controlling the heating voltage. The heating frame surrounded outside the crucible 2 by the heater 52 is made of tungsten rod, the heating frame can be made into a barrel-shaped frame structure, so that each position of the crucible is uniformly heated, the top of the heater 51 is provided with a heat preservation screen 53, and the height of the heater is higher than that of the crucible. The insulating brick 9 surrounds the outer wall and the bottom of the heater 52, the height that the insulating brick 9 was piled up is higher than the crucible, and the height of insulating brick 9 top is close with the height of heater top, has guaranteed the heating effect of heater.
As shown in figure 1, a seed rod 31 extending into the furnace shell 11 is arranged on the furnace cover 12, the seed rod 31 is positioned above the crucible 2, a seed clamp 32 is arranged at the bottom of the seed rod 31, and the operation is more convenient during the gem growth processing procedure by arranging the seed clamp 32.
As shown in figures 1 to 5, a heat preservation ring 7 is placed at the top of the crucible 2, an inner cavity of the heat preservation ring 7 is communicated with an inner cavity of the crucible 2 to form a jewel placing cavity, heat preservation sand is filled in the jewel placing cavity, a heat preservation cover 4 is covered at the top of the heat preservation ring 7, the temperature gradient in the longitudinal direction inside the furnace shell is reduced through the heat preservation sand, the heat preservation ring, the heat preservation cover and heat preservation bricks, and the annealing quality of the jewel is guaranteed. The density of the heat preservation ring 7 and the heat preservation cover 4 reaches 4g/cm3The height of the crucible is increased through the heat-insulating ring 7, the number of the heat-insulating rings stacked can be conveniently selected according to the heights of different jewels, the operation is simple and convenient, the application range is wide, and the annealing efficiency is improved. The heat preservation ring 7 comprises three ring petals 71 spliced end to end, a convex block 712 is convexly arranged at the head end of each ring petal 71, a concave groove 711 matched with the convex block 712 in shape is concavely arranged at the tail end of each ring petal 71, each convex block 712 can be of a convex semi-circular structure, and each concave groove 711 can be of a concave semi-circular structure. The heat preservation cover 4 comprises two spliced cover plates 41, the cover plates 41 are of semicircular structures, and the bottom of each cover plate 41 is convexly provided with a limiting part 411 extending into the inner cavity of the heat preservation ring. The heat-insulating ring and the heat-insulating cover are designed into an assembling structure, so that the difficulty in taking and placing the heat-insulating ring and the heat-insulating cover is reduced, the conditions of cracking and deformation of heat-insulating materials caused by repeated cooling and high-temperature state switching are reduced, and the service lives of the heat-insulating ring and the heat-insulating cover are prolonged.
As shown in figure 1, the heat-preservation sand comprises a bedding layer 61, a gem fixing layer 62 and a covering layer 63 which are sequentially distributed from bottom to top, the heat-preservation sand can adopt alumina sand with the particle diameter of 2mm-3mm, and the heat-preservation sand adopts particle heat-preservation sand with proper diameter, so that the cracking of the gem caused by the impact of the thermal expansion and contraction of a high-temperature section can be effectively prevented, and the annealing quality of the gem is ensured. Wherein, the thickness of the bedding layer 61 can be 6cm-10cm, and the thickness of the covering layer 63 can be 1cm-3 cm. Firstly paving a 6cm-10cm thick bedding layer at the bottom of a crucible, then vertically erecting a jewel 8 on the bedding layer, enabling the distance between two adjacent jewels at the same height to be equal and not to be in contact with the wall surface of the crucible, filling heat preservation sand of a jewel fixing layer to cover the jewel so as to keep the jewel immobile, continuously filling heat preservation sand larger than or equal to 3cm after the heat preservation sand of the jewel fixing layer covers the jewel, then placing a second layer of jewel, circularly placing proper layers of jewels in the operation, refilling a 1cm-3cm thick covering layer 63, then covering a heat preservation cover, and then placing a heat preservation screen, wherein the bottom of the heat preservation screen is not in contact with the top of the heat preservation cover. During annealing, in order to detect the annealing temperature inside the crucible, ceramic temperature measuring rings can be placed in the crucible, and the ceramic temperature measuring rings are arranged every 10cm along the longitudinal direction of the crucible, so that the temperature inside the crucible can be detected according to the deformation of the ceramic temperature measuring rings, and reference is provided for temperature regulation of next annealing.
The utility model discloses a structural improvement to the growth furnace makes the growth furnace not only can be used for the growth process of precious stone, can also be used for the annealing process of precious stone. The problem of insufficient height of the crucible is solved by arranging the heat preservation ring which can be taken and placed, the number of jewels which can be contained in the crucible is increased, the annealing efficiency is enhanced, and the cost of a single jewel is reduced; the detachable heat-insulating brick, the heat-insulating ring and the heat-insulating cover are matched to work, so that the problem of overlarge longitudinal temperature gradient of the gem growth furnace is solved, the heat insulation of the top of the crucible is enhanced, the heat insulation problem of the whole temperature field is enhanced, the gem heating and cooling process is stable and mild, the impact of temperature change on the gem is reduced, the melting material power in the gem production state can be detected by matching with the heater and the ceramic temperature measuring ring, the maximum annealing power which does not cause the gem melting is obtained, and the optimized stress which enables the gem to meet the subsequent processing is achieved; the problem of placement and positioning of the gem in the crucible is also solved through the heat-preservation sand.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. The utility model provides an improved generation precious stone vacuum growth stove which characterized in that: establish the bell at the stove outer covering top including stove outer covering and lid, install crucible and heater in the stove outer covering, just the crucible is arranged in outward to the heater, install the seed rod that stretches into in the stove outer covering on the stove outer covering, seed rod is located the crucible top, the heat preservation ring has been place at the crucible top, the inner chamber and the crucible inner chamber intercommunication formation precious stone of heat preservation ring place the chamber, the precious stone is placed the intracavity and is filled there is heat preservation sand, heat preservation ring top lid is equipped with the heat preservation and covers.
2. An improved gem vacuum growth furnace as in claim 1, further comprising: the furnace shell bottom is equipped with the pillar, the pillar withstands crucible bottom and props up the crucible, the heater shape matches with the crucible shape, the heater encloses and establishes in the outside and the bottom of crucible, the top of heater is equipped with the heat preservation screen.
3. An improved gem vacuum growth furnace as in claim 2, further comprising: the heater is an electric heater, and a heating frame surrounded outside the crucible by the heater is made of tungsten rods.
4. An improved gem vacuum growth furnace as in claim 2, further comprising: the heater also comprises insulating bricks, wherein the insulating bricks surround the outer wall and the bottom of the heater.
5. An improved gem vacuum growth furnace as in claim 1, further comprising: the heat-insulating ring comprises three ring flaps spliced end to end, wherein a convex block is convexly arranged at the head end of each ring flap, and a groove matched with the convex block in shape is concavely arranged at the tail end of each ring flap.
6. An improved gem vacuum growth furnace as in claim 5, further comprising: the heat-insulating cover comprises two spliced cover plates, and the bottom of each cover plate is convexly provided with a limiting part extending into the inner cavity of the heat-insulating ring.
7. An improved gem vacuum growth furnace as in claim 1, further comprising: the heat preservation ring and the heat preservation cover are made of zirconium oxide.
8. An improved vacuum gem growth furnace as in any one of claims 1 to 7, further comprising: the heat-insulating sand comprises a bedding layer, a gem fixing layer and a covering layer which are sequentially distributed from bottom to top.
9. An improved gem vacuum growth furnace as in claim 8, further comprising: the heat-insulating sand is alumina sand, and the particle diameter of the heat-insulating sand is 2mm-3 mm.
10. An improved gem vacuum growth furnace as in claim 8, further comprising: the thickness of the bedding layer is 6cm-10cm, and the thickness of the covering layer is 1cm-3 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920123702.7U CN209941145U (en) | 2019-01-24 | 2019-01-24 | Improved vacuum gem growth furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920123702.7U CN209941145U (en) | 2019-01-24 | 2019-01-24 | Improved vacuum gem growth furnace |
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| Publication Number | Publication Date |
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| CN209941145U true CN209941145U (en) | 2020-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920123702.7U Active CN209941145U (en) | 2019-01-24 | 2019-01-24 | Improved vacuum gem growth furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118308779A (en) * | 2024-06-11 | 2024-07-09 | 北京镓创科技有限公司 | Gallium oxide single crystal and growth device and growth method thereof |
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2019
- 2019-01-24 CN CN201920123702.7U patent/CN209941145U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118308779A (en) * | 2024-06-11 | 2024-07-09 | 北京镓创科技有限公司 | Gallium oxide single crystal and growth device and growth method thereof |
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