Molten salt furnace for annealing LBO crystal

Abstract

The utility model discloses a molten salt furnace for annealing LBO crystals, and particularly relates to the technical field of molten salt furnaces for annealing crystals, which comprises a furnace body, a heat preservation component is fixedly connected to the inner surface of the furnace body, a heating mechanism is mounted in the middle of the heat preservation component, and a bearing mechanism is fixedly connected to the lower portion of the outer surface of a connecting column. The upper portion of the bearing mechanism is fixedly connected with a protection mechanism, and inner cavities of the two sliding grooves are jointly in sliding connection with a sealing mechanism. According to the molten salt furnace for annealing the LBO crystals, the inner cavity of the furnace body can be heated and subjected to heat preservation through the heat preservation assembly and the heating mechanism, and meanwhile, the LOB crystals can be contained through the bearing mechanism; and under the protection effect of the protection mechanism, the phenomenon that crystals placed in the bearing mechanism are scattered in the lifting process under driving of an electric telescopic rod can be avoided, an inner cavity of a sliding groove can be sealed through a sealing mechanism, heat in an inner cavity of the furnace body is prevented from leaking, and the practicability and universality of the device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of molten salt furnaces for crystal annealing, and particularly relates to a molten salt furnace for LBO crystal annealing. Background Art

[0002] The LBO crystal, whose full name is "lithium triborate", is a non-linear optical crystal with excellent performance. It has the characteristics of good ultraviolet light transmittance, relatively high optical damage threshold, and moderate non-linear coefficient. In addition, this crystal has stable chemical properties, high mechanical hardness, and is easy to deliquesce, making it very attractive for certain non-linear optical processing.

[0003] The existing molten salt furnaces have large and bulky structures, and cannot perform short-distance lifting adjustment on the crystals inside the molten salt furnace, resulting in poor temperature control of the crystals and a poor annealing environment for the crystals. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a molten salt furnace for LBO crystal annealing, which can effectively solve the problem that the seed crystal rod inside the molten salt furnace cannot be adjusted for short-distance lifting.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A molten salt furnace for LBO crystal annealing includes a furnace body. The inner surface of the furnace body is fixedly connected with a heat preservation component. A heating mechanism is installed in the middle of the heat preservation component. The upper middle part of the outer surface of the furnace body is fixedly connected with an electric telescopic rod. The lower part of the piston rod output end of the electric telescopic rod is fixedly connected with a connecting column. The lower part of the outer surface of the connecting column is fixedly connected with a bearing mechanism. The upper part of the bearing mechanism is fixedly connected with a protection mechanism. The left and right parts of the upper end of the outer surface of the furnace body are symmetrically provided with chutes communicating with the outside. The inner cavities of the two chutes are jointly slidably connected with a sealing mechanism.

[0007] Preferably, the heat preservation component includes two heat preservation layers, and a closed annular chamber is arranged in the middle of the two heat preservation layers.

[0008] Preferably, the heating mechanism includes a plurality of heating tubes, and a plurality of connecting frames are fixedly connected at intervals between the plurality of heating tubes.

[0009] Preferably, the bearing mechanism includes a heat conduction box. The middle part of the bottom wall of the inner cavity of the heat conduction box is fixedly connected with a fixed sleeve, and the inner surface of the fixed sleeve is fixedly connected with the lower part of the outer surface of the connecting column.

[0010] Preferably, the protective mechanism includes two fixed card shells, the inner surfaces of the two fixed card shells are slidably connected with fan-shaped covers, the upper ends of the outer surfaces of the two fan-shaped covers are provided with circular through grooves communicating with the outside world, and the sides of the outer surfaces of the two fixed card shells that are close to each other are fixedly connected to the upper part of the outer surface of the fixed sleeve.

[0011] Preferably, the sealing mechanism comprises a sealing cover, a handle is symmetrically fixedly connected to the upper end of the outer surface of the sealing cover, and the lower part of the outer surface of the sealing cover is slidably connected to the inner cavities of the two slide grooves.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The utility model can heat and insulate the inner cavity of the furnace body through the insulation component and the heating mechanism, and can carry the seed crystal rod through the bearing mechanism. Under the protective effect of the protective mechanism, the seed crystal rod placed inside the bearing mechanism can be prevented from being disturbed during the lifting process driven by the electric telescopic rod. The inner cavity of the slide groove can be sealed by the sealing mechanism to prevent the heat in the furnace body from leaking, thereby improving the practicability and universality of the device.

[0014] 2. The utility model can insert the seed crystal rod into the inner cavity of the heat-conducting box through the heat-conducting box. Before heating the heat-conducting box, the circular through-groove inner cavity can be moved by a tool to make the fan-shaped cover rotate out from the corresponding fixed card shell inner cavity, so that the two fan-shaped covers and the two fixed card shells can cover the upper part of the heat-conducting box, avoiding the phenomenon that the seed crystal rod in the inner cavity of the heat-conducting box is disturbed during the lifting and lowering of the heat-conducting box, thereby improving the practicality and universality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the heat preservation component and heating mechanism of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the bearing mechanism and the protection mechanism of the utility model;

[0018] Figure 4 This is a schematic diagram of the sealing mechanism structure of the utility model.

[0019] In the figure: 1. Furnace body; 11. Slide groove; 2. Heat preservation component; 21. Heat preservation layer; 22. Annular bin; 3. Heating mechanism; 31. Heating pipe; 32. Connecting frame; 4. Electric telescopic rod; 41. Connecting column; 5. Carrying mechanism; 51. Heat conduction box; 52. Fixed sleeve; 6. Protection mechanism; 61. Fixed clamping shell; 62. Sector cover; 63. Circular through groove; 7. Sealing mechanism; 71. Sealing cover; 72. Handle. Detailed implementation mode

[0020] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation modes.

[0021] As Figure 1 shown, a molten salt furnace for annealing LBO crystals includes a furnace body 1. A heat preservation component 2 is fixedly connected to the inner surface of the furnace body 1, which can play a role in heat preservation. A heating mechanism 3 is installed in the middle of the heat preservation component 2, which can play a role in heating the inner cavity of the furnace body 1. An electric telescopic rod 4 is fixedly connected to the middle of the upper end of the outer surface of the furnace body 1. A connecting column 41 is fixedly connected to the output end of the piston rod at the lower part of the electric telescopic rod 4. A carrying mechanism 5 is fixedly connected to the lower part of the outer surface of the connecting column 41, which can play a role in carrying the seed crystal rod. A protection mechanism 6 is fixedly connected to the upper part of the carrying mechanism 5, which can play a role in protecting the crystal placed in the inner cavity of the heat conduction box 51 during the lifting and adjustment of the heat conduction box 51. Slide grooves 11 communicating with the outside are symmetrically opened at the left and right parts of the upper end of the outer surface of the furnace body 1. A sealing mechanism 7 is slidably connected to the inner cavities of the two slide grooves 11, which can play a role in sealing the heat in the inner cavity of the furnace body 1 and facilitating the operation of the seed crystal rod placed in the inner cavity of the heat conduction box 51.

[0022] In order to achieve the purpose of heat preservation, refer to Figure 2 , the heat preservation component 2 includes two heat preservation layers 21, which can play a role in heat preservation for the heat dissipated by the heating pipe 31. An airtight annular bin 22 is opened in the middle of the two heat preservation layers 21.

[0023] In order to achieve the purpose of heating the inner cavity of the furnace body 1, refer to Figure 2 , the heating mechanism 3 includes a plurality of heating pipes 31, which can play a role in heating the crystal in the inner cavity of the furnace body 1. A plurality of connecting frames 32 are fixedly connected at intervals between the plurality of heating pipes 31.

[0024] In order to achieve the purpose of carrying the seed crystal rod, refer to Figure 3The carrying mechanism 5 includes a heat-conducting box 51, which can be used to carry and place the seed crystal rod. A fixed shell 52 is fixedly connected to the middle of the bottom wall of the inner cavity of the heat-conducting box 51, which can be used to fix the heat-conducting box 51 and the lower part of the connecting column 41. The inner surface of the fixed shell 52 is fixedly connected to the lower part of the outer surface of the connecting column 41.

[0025] In order to achieve the purpose of protecting the crystal placed in the inner cavity of the heat-conducting box 51 during the lifting and adjusting of the heat-conducting box 51, refer to Figure 3 The protection mechanism 6 includes two fixed card shells 61, and the inner surfaces of the two fixed card shells 61 are slidably connected with fan-shaped covers 62. The upper ends of the outer surfaces of the two fan-shaped covers 62 are provided with circular through grooves 63 that communicate with the outside world, and the sides of the outer surfaces of the two fixed card shells 61 that are close to each other are fixedly connected to the upper part of the outer surface of the fixed sleeve 52.

[0026] When it is necessary to operate the seed crystal rod in the inner cavity of the heat-conducting box 51, first use a fixing tool to move the inner cavity of the circular through groove 63 to rotate the fixing shell 61 to the corresponding inner cavity of the fixing shell 61. At this time, the seed crystal rod in the inner cavity of the heat-conducting box 51 can be operated.

[0027] In order to achieve the purpose of sealing the heat of the inner cavity of the furnace body 1 and facilitating the operation of the seed crystal rod placed in the inner cavity of the heat conduction box 51, refer to Figure 4 The sealing mechanism 7 includes a sealing cover 71 , a handle 72 is symmetrically fixedly connected to the upper end of the outer surface of the sealing cover 71 , and the lower part of the outer surface of the sealing cover 71 is slidably connected to the inner cavities of the two slide grooves 11 .

[0028] When the seed crystal rod in the inner cavity of the heat-conducting box 51 needs to be operated, firstly, the sealing cover 71 is slid upward and removed from the inner cavities of the two slide grooves 11 by holding the two handles 72 , and then the seed crystal rod in the inner cavity of the heat-conducting box 51 is operated through the inner cavities of the two slide grooves 11 .

[0029] It should be noted that the specific installation method, circuit connection method and control method of the electric telescopic rod 4 in the present invention are all conventional designs and will not be elaborated in detail in the present invention.

[0030] Working principle of the utility model: First, hold two handles 72 by hand and slide the sealing cover 71 upward out of the inner cavities of two sliding grooves 11. Then, use a fixing tool to rotate the fixing cartridge 61 through the inner cavity of the circular through groove 63 to the inner cavity of the corresponding fixing cartridge 61. At this time, a seed crystal rod can be inserted into the inner cavity of the heat conduction box 51 through the inner cavities of the two sliding grooves 11. Then, place the sealing cover 71 back into the inner cavity of the sliding groove 11. At this time, drive the electric telescopic rod 4 to drive the connecting column 41 to move, so as to drive the heat conduction box 51 to move up and down in the middle of the furnace body 1 for adjustment until it is adjusted to the required position, so that the seed crystal rod is located at a predetermined position, and the LBO crystal can be stably annealed to make the crystal stable.

[0031] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection claimed by the utility model is defined by the appended claims and their equivalents.

Claims

1. A molten salt furnace for annealing LBO crystals, comprising a furnace body (1), characterized in that: The inner surface of the furnace body (1) is fixedly connected to a heat preservation component (2), a heating mechanism (3) is installed in the middle of the heat preservation component (2), an electric telescopic rod (4) is fixedly connected to the middle of the upper end of the outer surface of the furnace body (1), a connecting column (41) is fixedly connected to the output end of the piston rod at the lower part of the electric telescopic rod (4), a bearing mechanism (5) is fixedly connected to the lower part of the outer surface of the connecting column (41), a protective mechanism (6) is fixedly connected to the upper part of the bearing mechanism (5), and sliding grooves (11) communicating with the outside are symmetrically opened at the left and right parts of the upper end of the outer surface of the furnace body (1), and a sealing mechanism (7) is slidably connected to the inner cavities of the two sliding grooves (11) together.

2. The molten salt furnace for annealing LBO crystal according to claim 1, characterized in that: The heat-insulating component (2) comprises two heat-insulating layers (21), and a sealed annular chamber (22) is provided in the middle of the two heat-insulating layers (21).

3. The molten salt furnace for LBO crystal annealing according to claim 1, characterized in that: The heating mechanism (3) comprises a plurality of heating tubes (31), wherein the plurality of heating tubes (31) are spaced apart and fixedly connected to a plurality of connecting frames (32).

4. The molten salt furnace for LBO crystal annealing according to claim 1, characterized in that: The bearing mechanism (5) comprises a heat-conducting box (51), a fixed sleeve (52) is fixedly connected to the middle of the bottom wall of the inner cavity of the heat-conducting box (51), and the inner surface of the fixed sleeve (52) is fixedly connected to the lower part of the outer surface of the connecting column (41).

5. The molten salt furnace for annealing LBO crystal according to claim 4, characterized in that: The protection mechanism (6) comprises two fixed card shells (61), the inner surfaces of the two fixed card shells (61) are slidably connected with fan-shaped covers (62), the upper ends of the outer surfaces of the two fan-shaped covers (62) are provided with circular through grooves (63) communicating with the outside, and the sides of the outer surfaces of the two fixed card shells (61) close to each other are fixedly connected to the upper outer surface of the fixed sleeve (52).

6. The molten salt furnace for annealing LBO crystal according to claim 1, characterized in that: The sealing mechanism (7) comprises a sealing cover (71), the upper end of the outer surface of the sealing cover (71) being symmetrically fixedly connected to a handle (72), and the lower portion of the outer surface of the sealing cover (71) being slidably connected to the inner cavities of the two slide grooves (11).

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