Supporting device for tungsten cylinder crucible of sapphire crystal growth furnace

Abstract

The utility model discloses a supporting device for a tungsten cylinder crucible of a sapphire crystal growth furnace, relates to the technical field of spar forming equipment, and aims to provide the supporting device for the tungsten cylinder crucible of the sapphire crystal growth furnace, which can lift the crucible and is convenient for taking, placing, feeding and discharging the crucible, and has the technical key points that the supporting device comprises a supporting frame, and a furnace body is arranged on the supporting frame; a cover plate is arranged at the top of the furnace body, a vacuumizing pipe is arranged on the side face of the furnace body, a lifting component is arranged on the supporting frame, the top end of the lifting component extends into the furnace body, and a movable plate is arranged at the top end of the lifting component. The threaded telescopic rod jacks upwards and drives the movable plate to move upwards, and the movable plate bears the tungsten crucible and drives the tungsten crucible to jack upwards, so that the tungsten crucible moves to the position of the opening in the upper portion of the furnace body, the purpose of jacking the tungsten crucible is achieved, and taking, placing, feeding and discharging of the tungsten crucible are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of crystal forming equipment, in particular to a supporting device for a tungsten tube crucible of a sapphire crystal growth furnace. Background Art

[0002] A sapphire crystal furnace is a device used to grow sapphire crystals. Its operating principle is to react high-purity aluminum oxide with a small amount of chromium powder at high temperature to produce a sapphire seed crystal. Subsequently, the seed crystal is temperature-controlled and vacuum or atmosphere-controlled within the furnace. Through crystal growth techniques, large-scale, high-purity, high-quality single sapphire crystals are gradually produced. However, existing crystal furnaces are all fixed, with the crucible located at the bottom of the furnace, making it difficult to access the crucible and load and unload materials. Utility Model Content

[0003] (1) Technical problems solved

[0004] In view of the deficiencies in the prior art, the utility model provides a supporting device for a tungsten tube crucible of a sapphire crystal growth furnace, which can lift the crucible and facilitate the placement and loading of the crucible.

[0005] (2) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a supporting device for a tungsten tube crucible of a sapphire crystal growth furnace, comprising a supporting frame, a furnace body is provided on the supporting frame, a cover is provided on the top of the furnace body, a vacuum tube is provided on the side of the furnace body, a lifting component is provided on the supporting frame, the top of the lifting component extends into the furnace body, a movable plate is provided on the top of the lifting component, a heating component is provided on the movable plate and the furnace body, the movable plate is slidably connected to the inner wall of the furnace body, a tungsten crucible is provided on the movable plate, the lifting component comprises a transmission machine, a motor and a threaded telescopic rod, the transmission machine is provided on the supporting frame, the motor is provided at the input end of the transmission machine, and the threaded telescopic rod is provided at the output end of the transmission machine.

[0007] Preferably, a heat insulating pad is provided under the movable plate, and the heat insulating pad is used to reduce the heat conduction efficiency of the movable plate to the lower part when the upper part is heated.

[0008] Preferably, a support seat is provided at the bottom of the furnace body, and the top end of the support seat is in contact with the movable plate.

[0009] Preferably, an inspection port is provided at the bottom of the furnace body, and the inspection port is used to accommodate a lifting component and facilitate the inspection of the lifting component.

[0010] Preferably, a sealing plate is provided in the inspection port, and the sealing plate is used to prevent dust from invading into the furnace body.

[0011] Preferably, a vacuum pump is provided under the sealing plate, and the vacuum pump is used to discharge the air between the lower part of the movable plate and the furnace body.

[0012] Preferably, a limiting block is detachably connected to the movable plate, and the limiting block is used to stabilize the position of the tungsten crucible.

[0013] (3) Beneficial effects

[0014] Compared with the prior art, the utility model provides a support device for a tungsten tube crucible in a sapphire crystal growth furnace, which has the following beneficial effects:

[0015] 1. By setting the movable plate and the threaded telescopic rod, when working, the motor drives the threaded telescopic rod through the transmission machine, the threaded telescopic rod rises upward, and drives the movable plate to move upward. The movable plate carries the tungsten crucible and drives it to rise upward, so that the tungsten crucible moves to the upper opening position of the furnace body, achieving the purpose of lifting the tungsten crucible, which is convenient for taking and placing the tungsten crucible and loading and unloading.

[0016] 2. By setting up the thermal insulation pad and vacuum pump, the thermal insulation pad can reduce the heat conduction efficiency of the movable plate, so that the high temperature of the tungsten crucible during crystallization will not be transferred to the lower part, avoiding the lifting components from being affected by the high temperature. In addition, the vacuum pump can be used to discharge the ambient air in the lifting components, so that a vacuum is formed around the lifting components, thereby preventing heat from being conducted to the lifting components. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0018] Figure 2 A schematic diagram of a cross-section of a furnace body of the present invention;

[0019] Figure 3 This is a schematic diagram of the vertical surface of the furnace body of the utility model;

[0020] Figure 4 It is a three-dimensional schematic diagram of the lifting component of the utility model.

[0021] In the figure: 1. Support frame; 2. Furnace body; 3. Lifting component; 301. Transmission machine; 302. Motor; 303. Threaded telescopic rod; 4. Vacuum tube; 5. Cover plate; 6. Tungsten crucible; 7. Movable plate; 8. Insulation pad; 9. Inspection port; 10. Vacuum pump; 11. Support seat; 12. Sealing plate; 13. Limit block. DETAILED DESCRIPTION

[0022] 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 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 making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-4 A supporting device for a tungsten tube crucible of a sapphire crystal growth furnace comprises a supporting frame 1, a furnace body 2 is provided on the supporting frame 1, a cover plate 5 is provided on the top of the furnace body 2, a vacuum tube 4 is provided on the side of the furnace body 2, a lifting component 3 is provided on the supporting frame 1, the top of the lifting component 3 extends into the furnace body 2, a movable plate 7 is provided on the top of the lifting component 3, a heating component is provided in the movable plate 7 and the furnace body 2, the movable plate 7 is slidably connected to the inner wall of the furnace body 2, a tungsten crucible 6 is provided on the movable plate 7, the lifting component 3 comprises a conveyor 301, a motor 302 and a threaded telescopic rod 303, the conveyor 301 is provided on the supporting frame 1, the motor 302 is provided at the input end of the conveyor 301, and the threaded telescopic rod 303 is provided at the output end of the conveyor 301;

[0024] In the present utility model, a movable plate 7 and a threaded telescopic rod 303 are provided. The motor 302 drives the threaded telescopic rod 303 to work through the transmission 301. The threaded telescopic rod 303 drives the movable plate 7 to move up and down. The movable plate 7 is used to carry the tungsten crucible 6 to achieve the purpose of moving the tungsten crucible 6 up and down, which is convenient for taking and placing the tungsten crucible 6 and loading and unloading. In addition, the movable plate 7 can be movably connected to the furnace body 2 while maintaining a seal with the inner wall of the furnace body 2, thereby preventing heat or vacuum leakage of the furnace body 2 during operation.

[0025] A heat insulation pad 8 is provided under the movable plate 7, and the heat insulation pad 8 is used to reduce the heat conduction efficiency of the movable plate 7 to the lower part when the upper part is heated;

[0026] By providing the thermal insulation pad 8 , the thermal insulation pad 8 can block the heat conduction and heat radiation of the movable plate 7 , so that the heat of the tungsten crucible 6 heated by the upper part of the movable plate 7 will not be transferred to the lower part of the movable plate 7 , thereby avoiding the heat from affecting the lifting component 3 .

[0027] A support base 11 is provided at the bottom of the furnace body 2, and the top end of the support base 11 is in contact with the movable plate 7;

[0028] By setting up the support base 11, the support base 11 can carry the movable plate 7, so that the movable plate 7 can be stably placed on the support base 11 after the bottom is moved. Since the sapphire crystal growth process is very long, the method of using the support base 11 to carry the movable plate 7 can avoid the lifting component 3 from being subjected to long-term stress, which can effectively ensure the service life of the lifting component 3.

[0029] An inspection port 9 is provided at the bottom of the furnace body 2 for accommodating the lifting component 3 and facilitating the inspection of the lifting component 3;

[0030] By providing the inspection port 9 , the lifting component 3 can be inspected or maintained at the bottom of the furnace body 2 through the inspection port 9 , which can avoid the tedious work of disassembling the movable plate 7 to maintain the lifting component 3 .

[0031] A sealing plate 12 is provided in the inspection port 9 to prevent dust from invading the furnace body 2;

[0032] By setting up the sealing plate 12, the sealing plate 12 can close the inspection port 9. The sealing plate 12 is removed during maintenance and installed in the working state to prevent dust from invading the furnace body 2 and protect the lifting component 3.

[0033] A vacuum pump 10 is provided under the sealing plate 12, and the vacuum pump 10 is used to discharge the air between the lower part of the movable plate 7 and the furnace body 2;

[0034] By setting up a vacuum pump 10, the air around the lifting component 3 can be extracted by the vacuum pump 10, so that a vacuum environment is formed around the lifting component 3. The vacuum environment can isolate the conduction of heat, further protecting the lifting component 3 from high temperature interference, and at the same time preventing the air in the lower part of the movable plate 7 from escaping to the upper part after the upper part of the movable plate 7 is evacuated to a vacuum.

[0035] The movable plate 7 is detachably connected to a limiting block 13, which is used to stabilize the position of the tungsten crucible 6;

[0036] By setting the limit block 13, the tungsten crucible 6 can be limited by the limit block 13 so that the tungsten crucible 6 can be stably placed on the movable plate 7. At the same time, the limit block 13 can be detachably connected so that its position can be changed, so that it can adapt to tungsten crucibles 6 of various sizes.

[0037] Working principle:

[0038] After the crystal growth is completed, the heating environment and vacuum environment in the furnace body 2 are released, and the cover 5 is opened. Then the motor 302 drives the threaded telescopic rod 303 through the transmission machine 301 to work. The threaded telescopic rod 303 lifts the movable plate 7 upward. The movable plate 7 uses the limit block 13 to drive the tungsten crucible 6 to move upward and move the tungsten crucible 6 to a position flush with the opening of the furnace body 2, so as to facilitate the placement and loading of the tungsten crucible 6.

[0039] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications based on the present invention that solve essentially the same technical problems and achieve essentially the same technical effects are included within the scope of protection of the present invention.

Claims

1. A supporting device for a tungsten tube crucible of a sapphire crystal growth furnace, comprising a supporting frame (1), a furnace body (2) is arranged on the supporting frame (1), a cover plate (5) is arranged on the top of the furnace body (2), and a vacuum tube (4) is arranged on the side of the furnace body (2), characterized in that: The support frame (1) is provided with a lifting component (3), the top end of the lifting component (3) extends into the furnace body (2), the top end of the lifting component (3) is provided with a movable plate (7), the movable plate (7) and the furnace body (2) are provided with a heating component, the movable plate (7) is slidably connected to the inner wall of the furnace body (2), a tungsten crucible (6) is provided on the movable plate (7), the lifting component (3) comprises a transmission machine (301), a motor (302) and a threaded telescopic rod (303), the transmission machine (301) is provided on the support frame (1), the motor (302) is provided at the input end of the transmission machine (301), and the threaded telescopic rod (303) is provided at the output end of the transmission machine (301).

2. The supporting device for a tungsten tube crucible of a sapphire crystal growth furnace according to claim 1, characterized in that: A heat insulation pad (8) is provided under the movable plate (7), and the heat insulation pad (8) is used to reduce the heat conduction efficiency of the movable plate (7) to the lower part when the upper part is heated.

3. The supporting device for a tungsten tube crucible of a sapphire crystal growth furnace according to claim 1, characterized in that: A support seat (11) is provided at the bottom of the furnace body (2), and the top end of the support seat (11) is in contact with the movable plate (7).

4. The supporting device for a tungsten tube crucible of a sapphire crystal growth furnace according to claim 1, characterized in that: The bottom of the furnace body (2) is provided with an inspection opening (9), and the inspection opening (9) is used to place the lifting component (3) and facilitates the inspection of the lifting component (3).

5. The supporting device for a tungsten tube crucible of a sapphire crystal growth furnace according to claim 4, characterized in that: A sealing plate (12) is provided in the inspection opening (9), and the sealing plate (12) is used to prevent dust from invading the furnace body (2).

6. The supporting device for a tungsten tube crucible of a sapphire crystal growth furnace according to claim 5, characterized in that: A vacuum pump (10) is provided under the sealing plate (12), and the vacuum pump (10) is used to discharge the air between the lower part of the movable plate (7) and the furnace body (2).

7. The supporting device for a tungsten tube crucible of a sapphire crystal growth furnace according to claim 1, characterized in that: The movable plate (7) is detachably connected to a limiting block (13), and the limiting block (13) is used to stabilize the position of the tungsten crucible (6).

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