Aluminum oxynitride transparent ceramic sintering furnace

Abstract

The utility model relates to the field of ceramic production equipment, in particular to an aluminum oxynitride transparent ceramic sintering furnace which comprises a heat preservation shell, an inlet and outlet is formed in the lower portion of the front end of the heat preservation shell, a heat preservation door is arranged at the inlet and outlet, and multiple sets of heating units are arranged at the upper end in the heat preservation shell at intervals in the horizontal direction. The heating unit comprises a plurality of heating pipes which are vertically arranged at intervals, a lifting table is arranged at the lower end in the heat preservation shell, two sliding rails are arranged at the upper end of the lifting table, a bearing frame is arranged in the two sliding rails in a sliding mode, a refractory layer composed of refractory bricks is arranged at the upper end of the bearing frame, and a heat insulation frame corresponding to the refractory layer is horizontally arranged in the heat preservation shell. According to the utility model, the aluminum oxynitride ceramic products are lifted among the heating units through the lifting platform, so that the aluminum oxynitride ceramic products are uniformly heated, and the sintering effect is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to ceramic production equipment field especially relates to a transparent aluminum oxide nitride ceramic sintering furnace. BACKGROUND

[0002] Transparent aluminum oxide nitride ceramic is a kind of high-performance ceramic material, combines the characteristics of alumina and aluminum nitride, has good optical performance, mechanical properties, thermal properties and chemical stability, is suitable for transparent armor or optical window, has the advantages of low high-temperature expansion coefficient, acid and alkali corrosion resistance, excellent oxidation resistance, is suitable for harsh environment, in the production process of transparent aluminum oxide nitride ceramic product, the effect of sintering is an important measure index of quality, in the sintering process, it is often in vacuum environment or in nitrogen atmosphere, wherein the uniformity of heating in the sintering process is one of the key factors to determine the quality of finished product, therefore, it is particularly necessary to design a transparent aluminum oxide nitride ceramic sintering furnace with uniform heating. SUMMARY

[0003] The utility model discloses a transparent aluminum oxide nitride ceramic sintering furnace, has the advantages that transparent aluminum oxide nitride ceramic product is heated uniformly.

[0004] The technical scheme adopted is as follows:

[0005] A transparent aluminum oxide nitride ceramic sintering furnace, including the heat preservation shell, the lower part of the front end of heat preservation shell is provided with the inlet and outlet, the inlet and outlet are provided with heat preservation door, the inside upper end of heat preservation shell is provided with a plurality of groups of heating units along the horizontal direction interval, and the heating unit includes a plurality of vertically spaced heating pipes, the inside lower end of heat preservation shell is provided with lifting platform, the lifting platform upper end is provided with two slide rails, the two slide rails are slidably provided with supporting bracket, the supporting bracket upper end is provided with the refractory layer of firebrick, and the inside of heat preservation shell is horizontally provided with the heat insulation frame corresponding to the refractory layer.

[0006] Preferably, the supporting bracket is provided with a plurality of groups of material rotating mechanisms, the material rotating mechanism includes a vertically rotating supporting shaft, the supporting shaft upper end is provided with a placing disc, and the placing disc is arranged above the refractory layer,

[0007] The supporting shaft lower end extends below the refractory layer, and the supporting shaft lower end is provided with a first bevel gear, a plurality of parallel driving shafts are rotatably arranged on the supporting bracket, a plurality of second bevel gears meshing with the first bevel gears are arranged on the driving shafts,

[0008] The front end of supporting bracket is provided with transmission assembly, and the transmission assembly drives each driving shaft to rotate synchronously.

[0009] Preferably, the transmission assembly comprises a chain and a plurality of first sprockets and second sprockets, the first sprockets are coaxially connected with the driving shafts one by one, the chain is wound outside each first sprocket and meshes with each first sprocket, and the second sprockets are all arranged on the periphery of the chain and mesh with the chain, one of the driving shafts is connected with an extension transmission shaft, a through hole corresponding to the extension transmission shaft is arranged on the heat preservation door, a driving mechanism is arranged outside the through hole, and the driving mechanism is provided with a quick release shaft coupling.

[0010] Preferably, the front side of the heat preservation door is provided with guide rails corresponding to the sliding rails, and each guide rail is provided with a guide slope close to one end of the heat preservation door.

[0011] Preferably, the lifting platform comprises a scissor lifting platform.

[0012] Compared with the prior art, the beneficial effects are that:

[0013] 1. The aluminum oxynitride ceramic product to be sintered is placed on the upper end of the refractory layer, the lifting frame is raised to lift the aluminum oxynitride ceramic product to the space between the heating units, so that the aluminum oxynitride ceramic product is located between the heating units and has the same spacing with the adjacent heating pipes, the heating of each aluminum oxynitride ceramic product is uniform, and the sintering effect is good.

[0014] 2. The utility model discloses a rotating mechanism is provided on the support frame, when the lifting platform is raised to the heat insulation layer and is pressed on the lower end of the heat insulation frame, the extension transmission shaft corresponds with the through hole, the extension transmission shaft is pulled out from the through hole through the through hole, and the quick release shaft coupling is connected with the driving mechanism, each supporting shaft is connected by using the driving mechanism, the synchronous rotation of the aluminum oxynitride ceramic product placed on the placing disc is realized, and the heating of the aluminum oxynitride ceramic product is more uniform. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a three-dimensional structure schematic view of the aluminum oxynitride transparent ceramic sintering furnace,

[0016] Figure 2 It is Figure 1 the structure schematic view of A in the figure,

[0017] Figure 3 It is an internal front view structure schematic view of the aluminum oxynitride transparent ceramic sintering furnace,

[0018] Figure 4 It is an external front view structure schematic view of the aluminum oxynitride transparent ceramic sintering furnace,

[0019] Figure 5 It is a side view structure schematic view of the aluminum oxynitride transparent ceramic sintering furnace,

[0020] In the figure: 1, heat preservation shell; 2, heating pipe; 3, heat preservation door; 4, telescopic mechanism; 5, lifting platform; 6, slide rail; 7, supporting frame; 8, refractory layer; 9, heat insulation frame; 10, supporting shaft; 11, placing disc; 12, first bevel gear; 13, second bevel gear; 14, driving shaft; 15, first sprocket; 16, second sprocket; 17, chain; 18, telescopic transmission shaft; 19, driving mechanism; 20, guide slope; 21, guide rail. DETAILED DESCRIPTION

[0021] The utility model will be further described below in combination with specific embodiments, such as Figures 1 to 5 Indicated:

[0022] Embodiment 1: a kind of aluminum oxynitride transparent ceramic sintering furnace, including heat preservation shell 1, heat preservation shell 1 is prior art, not repeated here;The lower part of the front end of heat preservation shell 1 is provided with inlet and outlet, the outside of inlet and outlet is vertically slidably provided with heat preservation door 3, the height of heat preservation door 3 is one-half of the height of heat preservation shell 1, the upper end of heat preservation shell 1 is provided with telescopic mechanism 4 connected with heat preservation door 3.

[0023] The upper end in the inside of heat preservation shell 1 is horizontally interval provided with multiple groups of heating unit, and the heating unit includes multiple vertically interval arranged heating pipes 2, and the heating pipe 2 is electrically driven heating, and the electrically driven heating heating pipe 2 is prior art, not repeated here, and the outside of heat preservation shell 1 is provided with power supply and power control module connected with each heating pipe 2, and the power of heating pipe 2 is changed by power control module, so as to change the temperature in the inside of heat preservation shell 1.

[0024] The lower end in the inside of heat preservation shell 1 is provided with lifting platform 5, and the upper end of lifting platform 5 is provided with two slide rails 6, and the two slide rails 6 are parallel to each other and extend along the front and back directions, and the supporting frame 7 is slidably arranged in the two slide rails 6, and the supporting frame 7 slides along the front and back directions in the two slide rails 6, and the upper end of supporting frame 7 is provided with refractory layer 8 formed by refractory bricks, and the inside of heat preservation shell 1 is horizontally provided with heat insulation frame 9 corresponding to refractory layer 8, and the heat insulation frame 9 is also formed by refractory bricks.

[0025] Lifting platform 5 is lowered to the lowest state, aluminum oxynitride ceramic products are placed to the upper end of refractory layer 8, and the aluminum oxynitride ceramic products are all between adjacent heating pipes 2, lifting platform 5 controls supporting frame 7 to rise until the lower end of refractory layer 8 contacts heat insulation frame 9, the distance between each aluminum oxynitride ceramic product and adjacent heating pipe 2 is same, and the heating is uniform during sintering process.

[0026] The embodiment 2 is a sintering furnace for transparent aluminum nitride oxide ceramic, which comprises a heat preservation shell 1, and the heat preservation shell 1 is prior art and will not be repeated here; the lower part of the front end of the heat preservation shell 1 is provided with an inlet and outlet, and the outer side of the inlet and outlet is vertically slidably provided with a heat preservation door 3, the height of the heat preservation door 3 is half of the height of the heat preservation shell 1, and the upper end of the heat preservation shell 1 is provided with a telescopic mechanism 4 connected with the heat preservation door 3.

[0027] A plurality of groups of heating units are arranged at the upper end of the inside of the heat preservation shell 1 in a horizontal direction, the heating unit comprises a plurality of vertically spaced heating pipes 2, the heating pipe 2 is electrically driven to heat, the electrically driven heating pipe 2 is prior art and will not be repeated here, the outside of the heat preservation shell 1 is provided with a power supply and a power control module connected with each heating pipe 2, the power of the heating pipe 2 is changed by the power control module, so as to change the temperature in the heat preservation shell 1.

[0028] The lower end of the inside of the heat preservation shell 1 is provided with a lifting platform 5, the lifting platform 5 comprises a scissor lifting platform 5, which is prior art and will not be repeated here; the upper end of the lifting platform 5 is provided with two slide rails 6, the two slide rails 6 are parallel to each other and extend in the front-rear direction, the two slide rails 6 are slidably provided with a supporting frame 7, the supporting frame 7 slides in the front-rear direction in the two slide rails 6, the upper end of the supporting frame 7 is provided with a refractory layer 8 composed of refractory bricks, and the inside of the heat preservation shell 1 is horizontally provided with a heat insulation frame 9 corresponding to the refractory layer 8, and the heat insulation frame 9 is also composed of refractory bricks.

[0029] The supporting frame 7 is provided with a plurality of groups of material rotating mechanisms, the material rotating mechanism comprises a vertically rotating supporting shaft 10, the upper end of the supporting shaft 10 is provided with a placing disc 11, the placing disc 11 is arranged above the refractory layer 8, the placing disc 11 is used for placing aluminum nitride oxide ceramic products, the lower end of the supporting shaft 10 extends below the refractory layer 8, and the lower end of the supporting shaft 10 is provided with a first bevel gear 12, a plurality of parallel driving shafts 14 are horizontally rotatably arranged on the supporting frame 7, a plurality of second bevel gears 13 meshing with the first bevel gears 12 are arranged on the driving shafts 14, and a transmission assembly is arranged at the front end of the supporting frame 7, the transmission assembly drives the driving shafts 14 to synchronously rotate, so as to drive the supporting shafts 10 to rotate by the driving shafts 14, and drive the placing disc 11 to rotate.

[0030] The transmission assembly comprises a chain 17 and a plurality of first sprockets 15 and second sprockets 16, the first sprockets 15 are coaxially connected with the driving shafts 14 one by one, the chain 17 is wound outside each first sprocket 15 and engaged with each first sprocket 15, and the second sprockets 16 are arranged on the periphery of the chain 17 and engaged with the chain 17, one of the driving shafts 14 is connected with an extension transmission shaft 18, a through hole corresponding to the extension transmission shaft 18 is arranged on the heat preservation door 3, a driving mechanism 19 is arranged outside the through hole, the driving mechanism 19 is provided with a quick-release coupling, when the lifting platform 5 is lifted to the heat insulation layer and is pressed on the lower end of the heat insulation frame 9, the extension transmission shaft 18 corresponds to the through hole, the extension transmission shaft 18 is pulled out of the through hole through the through hole, and the quick-release coupling is connected with the driving mechanism 19, and each support shaft 10 is driven by the driving mechanism 19.

[0031] The front side of the heat preservation door 3 is provided with guide rails 21 corresponding to the slide rails 6, one end of each guide rail 21 close to the heat preservation door 3 is provided with a guide slope 20, so that the guide rail 21 can pull the support frame 7 out of the heat preservation shell 1 through the corresponding slide rail 6, thereby placing or taking off the aluminum nitride ceramic product.

[0032] Specific working process is as follows: start each heating pipe 2, control the extension mechanism 4 to pull the heat preservation door 3 upward, control the lifting platform 5 to be lowered to the guide rail 21 and the slide rail 6 are at the same height, use external traction equipment to pull the support frame 7 to pull out the support frame 7, place the aluminum nitride ceramic product to be sintered on each placing plate, after the placing is completed, push the support frame 7 into the inside of the heat preservation shell 1, lower the heat preservation door 3, raise the lifting platform 5 until the heat insulation layer is pressed on the lower end of the heat insulation frame 9, the extension transmission shaft 18 corresponds to the through hole, the operator pulls the extension transmission shaft 18 out of the through hole through the through hole, and the quick-release coupling is connected with the driving mechanism 19, each support shaft 10 is driven by the driving mechanism 19, the aluminum nitride ceramic product placed on each placing plate 11 is synchronously rotated, the aluminum nitride ceramic product is uniformly heated, after the sintering is completed, the quick-release coupling is disassembled to disconnect the extension transmission shaft 18 and the driving mechanism 19, and the extension transmission shaft 18 is inserted into the heat preservation shell 1, the heat preservation door 3 is raised by the extension mechanism 4, the lifting platform 5 is lowered to the guide rail 21 and the slide rail 6 are at the same height, the support frame 7 is pulled out by using external traction equipment to pull the support frame 7, and the sintered aluminum nitride ceramic product is taken off.

[0033] The above embodiment is only a preferred embodiment of the present application, and cannot be used to limit the scope of protection of the present application, and any non-substantial change and replacement made by the person skilled in the art on the basis of the present application belongs to the scope of protection of the present application.

Claims

1. An aluminum oxynitride transparent ceramic sintering furnace, characterized by: The application relates to a heat preservation device, which comprises a heat preservation shell (1), an inlet and an outlet arranged at the lower part of the front end of the heat preservation shell (1), a heat preservation door (3) arranged at the inlet and the outlet, a plurality of groups of heating units arranged at the upper end of the heat preservation shell (1) in a horizontal direction, the heating units comprising a plurality of vertically arranged heating pipes (2), a lifting platform (5) arranged at the lower end of the heat preservation shell (1), two slide rails (6) arranged at the upper end of the lifting platform (5), a supporting frame (7) slidably arranged in the two slide rails (6), a refractory layer (8) composed of refractory bricks arranged at the upper end of the supporting frame (7), and a heat insulation frame (9) arranged in the heat preservation shell (1) in a horizontal direction and corresponding to the refractory layer (8).

2. The transparent aluminum oxynitride ceramic sintering furnace of claim 1, wherein: A plurality of material turning mechanisms are arranged on the supporting frame (7), the material turning mechanism comprises a supporting shaft (10) arranged in a vertical rotating mode, a placing disc (11) arranged at the upper end of the supporting shaft (10), the placing disc (11) being arranged above the refractory layer (8), the lower end of the supporting shaft (10) extending below the refractory layer (8), a first bevel gear (12) arranged at the lower end of the supporting shaft (10), a plurality of driving shafts (14) arranged in a horizontal rotating mode on the supporting frame (7) and parallel to each other, a plurality of second bevel gears (13) arranged on the driving shafts (14) and meshing with the first bevel gears (12), a transmission assembly arranged at the front end of the supporting frame (7) and driving the driving shafts (14) to rotate synchronously.

3. The transparent aluminum oxynitride ceramic sintering furnace of claim 2, wherein: The transmission assembly comprises a chain (17) and a plurality of first chain wheels (15) and second chain wheels (16), the first chain wheels (15) are coaxially connected with the driving shafts (14) one by one, the chain (17) is wound outside the first chain wheels (15) and meshes with the first chain wheels (15), the second chain wheels (16) are arranged outside the chain (17) and mesh with the chain (17), one of the driving shafts (14) is connected with an extension transmission shaft (18), a through hole corresponding to the extension transmission shaft (18) is arranged on the heat preservation door (3), a driving mechanism (19) is arranged outside the through hole, and the driving mechanism (19) is provided with a quick-release coupling.

4. The transparent aluminum oxynitride ceramic sintering furnace of claim 1, wherein: The front side of the heat preservation door (3) is provided with guide rails (21) corresponding to the slide rails (6), and the guide rails (21) are provided with guide slopes (20) at one end close to the heat preservation door (3).

5. The transparent aluminum oxynitride ceramic sintering furnace of claim 1, wherein: The lifting platform (5) comprises a shearing type lifting platform (5). The heat preservation door (3) is provided with guide rails (21) corresponding to the slide rails (6), and the guide rails (21) are provided with guide slopes (20) at one end close to the heat preservation door (3). The lifting platform (5) comprises a shearing type lifting platform (5).

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