Aluminum oxide micro powder production device and method

By designing alumina micropowder production device and using high-temperature heating and stirring technology, the problems of large grain size and agglomeration of alumina powders prepared by traditional calcining methods are solved, and smaller grain size and better performance are achieved.

CN119934825AInactive Publication Date: 2025-05-06SHANDONG ZHANCHI NEW MATERIALS CO LTD
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Patent Information

Application Number
CN202510049328.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-13
Publication Date
2025-05-06
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The alumina powder prepared by traditional calcination method has a large grain size and agglomeration phenomenon, which affects its performance and application.

Method used

Alumina micro powder production device is designed, including a calcining cylinder, a discharge cylinder and a pouring powdering mechanism. High-temperature heating and calcination are carried out through multiple heating pipes, and a bevel gear system is driven by a high-temperature resistant motor to ensure sufficient calcination. When discharging materials, the discharge barrel is driven to incline through an electric telescopic rod, and the spring and linkage shaft system are used to adjust and balance space to avoid agglomeration.

Benefits of technology

It realizes efficient preparation of aluminum oxide fine powder, has smaller grain size, avoids agglomeration, and improves the performance and application value of the product.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses an alumina micro-powder production device and method, and relates to the field of alumina micro-powder production device.The alumina micro-powder production device comprises a calcining cylinder, the surface of the calcining cylinder is fixedly connected with a supporting frame, one side of the calcining cylinder is rotationally connected with an opening and closing door, and the surface of the opening and closing door is fixedly connected with a controller; one side of the opening and closing door is fixedly connected with a closing plate, the inner wall of the calcining cylinder is fixedly connected with a pressure gauge and a thermometer, the inner wall of the calcining cylinder is provided with a discharging cylinder, and the inner wall of the discharging cylinder is fixedly connected with a plurality of convex blocks. The multiple heating pipes conduct high-temperature heating calcination treatment on the interior of the discharging barrel, a first linkage shaft and a second linkage shaft rotate together to drive a connected driving plate and a stirring plate to rotate together, and the stirring plate rotates to stir rare earth aluminate calcined in the discharging barrel, so that the rare earth aluminate is calcined more sufficiently, and the agglomeration phenomenon is avoided during calcination.
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Description

Technical Field

[0001] The invention relates to the field of alumina micropowder production devices, and in particular to an alumina micropowder production device and a method thereof. Background Art

[0002] The production process of alumina powder is getting higher and higher, and alumina powder below 1 micron can be produced. Nano alumina transparent liquid XZ-LY101 is colorless and transparent. The nano alumina transparent dispersion uses 5-10 nanometers of alumina, which is nano alumina screened out after layers of deep processing. It is added to various acrylic resins, polyurethane resins, epoxy resins, melamine resins, silicone acrylic emulsions and other resins in an amount of 5% to 10%. It can increase the hardness of the resin, and the hardness can reach 6-8H. It is completely transparent. The nano alumina liquid can be any aqueous or oily solvent, and can also be used as various glass coating materials, gems, precision instrument materials, etc.

[0003] There are many chemical formulas of alumina powder, such as α-Al203, β-Al203 and γ-Al203, among which α-Al203 is an important ceramic material, which is widely used in ceramics, grinding materials, fillers, catalysts and coatings in industry. During preparation, rare earth aluminate is calcined at an appropriate temperature by calcination to obtain α-AI203 powder. However, the powder prepared by the traditional calcination method has a large grain size and a certain agglomeration phenomenon, which affects its performance and application. Summary of the invention

[0004] The purpose of the present invention is to provide an alumina micropowder production device and method to solve the problem in the above background technology that the powder prepared by the traditional calcination method has a large grain size and a certain agglomeration phenomenon, which affects its performance and application.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an alumina micro powder production device, comprising a calcining cylinder, a support frame is fixedly connected to the surface of the calcining cylinder, a switch door is rotatably connected to one side of the calcining cylinder, a controller is fixedly connected to the surface of the switch door, a closing plate is fixedly connected to one side of the switch door, a pressure gauge and a temperature gauge are fixedly connected to the inner wall of the calcining cylinder, a discharge cylinder is installed on the inner wall of the calcining cylinder, a plurality of protrusions are fixedly connected to the inner wall of the discharge cylinder, a plurality of heating tubes are fixedly connected to the inner wall of the calcining cylinder, and a material dumping and pulverizing mechanism is fixedly connected to the inner wall of the calcining cylinder;

[0006] The material dumping and pulverizing mechanism includes a support column fixedly connected to the inner wall of the calcining cylinder, a conical hole is opened on the surface of the discharge cylinder, a sealing plate is fixedly connected to the surface of the discharge cylinder, a second ball head is fixedly connected to the top end of the support column, the surface of the second ball head is matched with the inner wall of the sealing plate, a balance column is fixedly connected to the surface of the second ball head, and the inner bottom wall of the calcining cylinder is fixedly connected to the support plate, and the upper surface of the support plate is in contact with the lower surface of the discharge cylinder.

[0007] The upper surface of the discharge cylinder is fixedly connected with a guide connecting plate, the upper surface of the calcining cylinder is fixedly connected with a U-shaped plate, the upper surface of the U-shaped plate is fixedly connected with an electric telescopic rod, and the output end of the electric telescopic rod passes through the inner wall of the calcining cylinder and is fixedly connected with a first ball head.

[0008] The inner wall of the guide connecting plate is slidably connected with a slider, the inner wall of the slider is sleeved with the surface of the first ball head, the inner wall of the sealing plate is provided with an arc groove, the surface of the second ball head is fixedly connected with a connecting block, and the connecting block is slidably connected with the inner wall of the arc groove.

[0009] The inner wall of the balance column is rotatably connected with a heat-insulating protective shell, the surface of the heat-insulating protective shell is fixedly connected with a first spring, and one end of the first spring away from the heat-insulating protective shell is fixedly connected to the inner wall of the balance column.

[0010] The inner wall of the heat-insulating protective shell is rotatably connected with a heat-insulating baffle, the inner wall of the heat-insulating protective shell is fixedly connected with a mounting box, the inner bottom wall of the mounting box is fixedly connected with a high-temperature resistant motor, and the output end of the high-temperature resistant motor is fixedly connected with a first bevel gear.

[0011] The inner wall of the heat insulation protection shell is rotatably connected with a first linkage shaft and a second linkage shaft, one end of the first linkage shaft is fixedly connected with the first connecting shaft, one end of the first connecting shaft passes through the inner wall of the installation box and is fixedly connected with the second bevel gear, the first bevel gear is meshed with the second bevel gear, one end of the second linkage shaft is fixedly connected with the second connecting shaft, one end of the second connecting shaft passes through the inner wall of the installation box and is fixedly connected with the third bevel gear, the first bevel gear is meshed with the third bevel gear.

[0012] A driving plate is fixedly connected to the surfaces of the first linkage shaft and the second linkage shaft, a toggle plate is slidably connected to the surface of the driving plate, and a plurality of through holes are formed on the surface of the toggle plate.

[0013] The surfaces of the driving plate and the shifting plate are fixedly connected with a damping telescopic rod, and the surface of the damping telescopic rod is sleeved with a second spring.

[0014] A method for producing aluminum oxide micropowder, the method comprising the following steps:

[0015] Step 1, before production, rare earth aluminate is placed in the discharge barrel, after closing the switch door, the operator controls the discharge barrel through multiple heating tubes through the control of the controller to perform high-temperature heating and calcining treatment, during the heating process, the high temperature resistant motor is started, the output end of the high temperature resistant motor drives the first bevel gear to rotate, the first bevel gear rotates to drive the third bevel gear and the second connecting shaft to rotate together, the second connecting shaft rotates to drive the second linkage shaft to rotate, the first bevel gear rotates to drive the second bevel gear to rotate, the second bevel gear rotates through the first connecting shaft to drive the first linkage shaft to rotate, the first linkage shaft rotates with the second linkage shaft, and drives the connected driving plate and the toggle plate to rotate together, the toggle plate rotates to stir the rare earth aluminate calcined in the discharge barrel;

[0016] Step 2. After waiting for the temperature to drop, open the switch door and start the electric telescopic rod. The output end of the electric telescopic rod drives the first ball head to rotate in the slider, so that the discharge barrel as a whole rotates and tilts with the second ball head as the center. At this time, the connecting block slides in the arc groove to adjust the space and avoid. In this process, when the toggle plate is in contact with the inner wall of the discharge barrel and is subjected to force, the toggle plate is driven to compress the second spring and move in the direction close to the driving plate. When the second linkage shaft is subjected to force, it drives the thermal insulation protective shell to rotate as a whole for adaptive adjustment. At this time, the discharge barrel can be tilted to discharge the aluminate after the calcination reaction in the discharge barrel. When the discharge barrel rotates and resets, the thermal insulation protective shell is reset under the action of multiple first springs to maintain balance and stability.

[0017] In summary, the technical effects and advantages of the present invention are as follows:

[0018] 1. In the present invention, during the heating process, multiple heating tubes perform high-temperature heating and calcining treatment on the discharge barrel, and the first linkage shaft and the second linkage shaft rotate together, driving the connected driving plate and the toggle plate to rotate together. The toggle plate rotates to stir the rare earth aluminate calcined in the discharge barrel, so that it is calcined more fully and avoids agglomeration during calcination.

[0019] 2. In the present invention, during discharging, the output end of the electric telescopic rod drives the first ball head to rotate in the slider, so that the discharge barrel as a whole rotates and tilts with the second ball head as the center. When the toggle plate is in contact with the inner wall of the discharge barrel and subjected to force, the toggle plate is driven to compress the second spring and move in the direction close to the driving plate. When the second linkage shaft is subjected to force, the heat insulation protective shell is driven to rotate as a whole to perform adaptive adjustment. At this time, the discharge barrel can be tilted to discharge the aluminate after the calcination reaction in the discharge barrel, which is convenient for discharging. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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 in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0022] Figure 2 It is a schematic cross-sectional view of the calcining tube in an embodiment of the present invention;

[0023] Figure 3 It is a schematic cross-sectional structural diagram of a discharge barrel in an embodiment of the present invention;

[0024] Figure 4 For the embodiment of the present invention Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0025] Figure 5 Schematic diagram of the three-dimensional structure of the fan blade in the embodiment of the present invention;

[0026] Figure 6 For the embodiment of the present invention Figure 5 A schematic diagram of the enlarged structure at B in the middle;

[0027] Figure 7 Schematic diagram of the three-dimensional structure of the heat-insulating protective shell in an embodiment of the present invention.

[0028] In the figure: 1, calcining cylinder; 2, support frame; 3, closing plate; 4, controller; 5, switch door; 6, pressure gauge; 7, temperature gauge; 8, U-shaped plate; 9, electric telescopic rod; 10, guide connecting plate; 11, support plate; 12, support column; 13, discharge cylinder; 14, heating tube; 15, bump; 16, balance column; 17, slider; 18, first ball head; 19, tapered hole; 20, sealing plate; 21, connecting block; 22, second Ball head; 23. arc groove; 24. second linkage shaft; 25. second spring; 26. through hole; 27. toggle plate; 28. damping telescopic rod; 29. ​​driving plate; 30. heat insulation protection shell; 31. first connecting shaft; 32. first spring; 33. third bevel gear; 34. second connecting shaft; 35. high temperature resistant motor; 36. first bevel gear; 37. second bevel gear; 38. installation box; 39. heat insulation baffle; 40. first linkage shaft. DETAILED DESCRIPTION

[0029] 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.

[0030] Example: Reference Figure 1-Figure 7 The alumina powder production device shown in the figure comprises a calcining tube 1, a support frame 2 is fixedly connected to the surface of the calcining tube 1, a switch door 5 is rotatably connected to one side of the calcining tube 1, a controller 4 is fixedly connected to the surface of the switch door 5, a closing plate 3 is fixedly connected to one side of the switch door 5, a pressure gauge 6 and a thermometer 7 are fixedly connected to the inner wall of the calcining tube 1, a discharge tube 13 is installed on the inner wall of the calcining tube 1, a plurality of protrusions 15 are fixedly connected to the inner wall of the discharge tube 13, a plurality of heating tubes 14 are fixedly connected to the inner wall of the calcining tube 1, and a material dumping and pulverizing mechanism is fixedly connected to the inner wall of the calcining tube 1;

[0031] The material dumping and pulverizing mechanism includes a support column 12 fixedly connected to the inner wall of the calcining tube 1, a conical hole 19 is opened on the surface of the discharge tube 13, a sealing plate 20 is fixedly connected to the surface of the discharge tube 13, a second ball head 22 is fixedly connected to the top of the support column 12, the surface of the second ball head 22 is adapted to the inner wall of the sealing plate 20, a balance column 16 is fixedly connected to the surface of the second ball head 22, and a support plate 11 is fixedly connected to the inner bottom wall of the calcining tube 1, and the upper surface of the support plate 11 is in contact with the lower surface of the discharge tube 13.

[0032] By means of the above structure, by setting a controller 4, the driving device in the device is started and stopped, by setting a support frame 2, the calcining tube 1 is installed and supported, by setting a switch door 5, one side of the calcining tube 1 is sealed at high temperature, and after the switch door 5 is closed, it is in contact with the side close to the discharge tube 13, by setting a plurality of heating tubes 14, high-temperature calcination operation is carried out, by setting a pressure gauge 6 and a thermometer 7, the calcination temperature and internal pressure conditions are understood, by setting a plurality of protrusions 15, the calcined rare earth is turned over and hits the surface of the plurality of protrusions 15 to make it fully calcined, by setting a support column 12, through the connection of the second ball head 22, the support and positioning of the sealing plate 20 and the discharge tube 13 as a whole is realized, by setting a tapered hole 19, when the discharge tube 13 is tilted, the space avoidance of the balance column 16 is realized, and by setting a support plate 11, the lower surface of the discharge tube 13 is contact-supported.

[0033] As a preferred implementation scheme in this embodiment, the upper surface of the discharge barrel 13 is fixedly connected to a guide connecting plate 10, the upper surface of the calcining barrel 1 is fixedly connected to a U-shaped plate 8, the upper surface of the U-shaped plate 8 is fixedly connected to an electric telescopic rod 9, and the output end of the electric telescopic rod 9 passes through the inner wall of the calcining barrel 1 and is fixedly connected to a first ball head 18.

[0034] By providing the U-shaped plate 8 and installing and positioning the electric telescopic rod 9, the position of the connected first ball head 18 is driven to change.

[0035] In this embodiment, the inner wall of the guide connecting plate 10 is slidably connected with a slider 17, the inner wall of the slider 17 is sleeved with the surface of the first ball head 18, the inner wall of the sealing plate 20 is provided with an arc groove 23, the surface of the second ball head 22 is fixedly connected with a connecting block 21, and the connecting block 21 is slidably connected to the inner wall of the arc groove 23.

[0036] By providing the slider 17, the slider 17 slides in the guide connecting plate 10 to adjust the position, and by providing the arc groove 23, when the discharge barrel 13 is tilted, a space is provided for the connecting block 21 to move and avoid.

[0037] As a preferred implementation in this embodiment, the inner wall of the balance column 16 is rotatably connected to a heat insulating protective shell 30, and a first spring 32 is fixedly connected to the surface of the heat insulating protective shell 30, and one end of the first spring 32 away from the heat insulating protective shell 30 is fixedly connected to the inner wall of the balance column 16.

[0038] By providing the heat-insulating protective shell 30, the internal high-temperature resistant motor 35 is heat-insulated and protected. By providing the first spring 32, the first spring 32 has good high-temperature resistance and drives the heat-insulating protective shell 30 to rotate and reset smoothly and stably.

[0039] In this embodiment, the inner wall of the heat insulation protection shell 30 is rotatably connected to the heat insulation baffle 39, the inner wall of the heat insulation protection shell 30 is fixedly connected to the installation box 38, the inner bottom wall of the installation box 38 is fixedly connected to the high temperature resistant motor 35, and the output end of the high temperature resistant motor 35 is fixedly connected to the first bevel gear 36.

[0040] The heat insulation baffle 39 is provided to provide heat insulation protection, and the high temperature resistant motor 35 is provided to drive the first bevel gear 36 to rotate.

[0041] In this embodiment, the inner wall of the heat insulation protection shell 30 is rotatably connected to the first linkage shaft 40 and the second linkage shaft 24, one end of the first linkage shaft 40 is fixedly connected to the first connecting shaft 31, one end of the first connecting shaft 31 passes through the inner wall of the installation box 38 and is fixedly connected to the second bevel gear 37, the first bevel gear 36 is meshed with the second bevel gear 37, one end of the second linkage shaft 24 is fixedly connected to the second connecting shaft 34, one end of the second connecting shaft 34 passes through the inner wall of the installation box 38 and is fixedly connected to the third bevel gear 33, the first bevel gear 36 is meshed with the third bevel gear 33.

[0042] By setting the second bevel gear 37, the first bevel gear 36 rotates to drive the second bevel gear 37 to rotate, and the first linkage shaft 40 is driven to rotate through the first connecting shaft 31. By setting the third bevel gear 33, the first bevel gear 36 rotates to drive the third bevel gear 33 to rotate, and the second linkage shaft 24 is driven to rotate through the second connecting shaft 34.

[0043] In this embodiment, a driving plate 29 is fixedly connected to the surfaces of the first linkage shaft 40 and the second linkage shaft 24 , a shifting plate 27 is slidably connected to the surface of the driving plate 29 , and a plurality of through holes 26 are formed on the surface of the shifting plate 27 .

[0044] By providing a driving plate 29 to drive the shifting plate 27 to rotate, the rare earth in the discharge barrel 13 is shifted and stirred, so that the reaction is more complete during the calcination process. By providing a plurality of through holes 26, the rare earth can be better crushed.

[0045] In this embodiment, a damping telescopic rod 28 is fixedly connected to the surfaces of the driving plate 29 and the shifting plate 27 , and a second spring 25 is sleeved on the surface of the damping telescopic rod 28 .

[0046] The damping telescopic rod 28 is provided to keep the installation position of the second spring 25. The second spring 25 has good high temperature resistance and the toggle plate 27 is pulled to be compressed and reset.

[0047] A method for producing aluminum oxide micropowder, the method comprising the following steps:

[0048] Step 1, before production, rare earth aluminate is placed in the discharge barrel 13, after closing the switch door 5, the operator controls the controller 4 to perform high-temperature heating and calcining treatment on the discharge barrel 13 through multiple heating tubes 14, during the heating process, the high temperature resistant motor 35 is started, the output end of the high temperature resistant motor 35 drives the first bevel gear 36 to rotate, the first bevel gear 36 rotates to drive the third bevel gear 33 and the second connecting shaft 34 to rotate together, the second connecting shaft 34 rotates to drive the second linkage shaft 24 to rotate, the first bevel gear 36 rotates to drive the second bevel gear 37 to rotate, the second bevel gear 37 rotates through the first connecting shaft 31 to drive the first linkage shaft 40 to rotate, the first linkage shaft 40 rotates with the second linkage shaft 24, and drives the connected driving plate 29 to rotate with the toggle plate 27, the toggle plate 27 rotates to stir the rare earth aluminate calcined in the discharge barrel 13;

[0049] Step 2, after waiting for the temperature to drop, open the switch door 5, start the electric telescopic rod 9, and the output end of the electric telescopic rod 9 drives the first ball head 18 to rotate in the slider 17, so that the discharge barrel 13 as a whole rotates and tilts with the second ball head 22 as the center. At this time, the connecting block 21 slides in the arc groove 23 to adjust the space and avoid. In this process, when the toggle plate 27 contacts the inner wall of the discharge barrel 13 and is subjected to force, the toggle plate 27 is driven to compress the second spring 25 and move in the direction close to the driving plate 29. When the second linkage shaft 24 is subjected to force, it drives the thermal insulation protection shell 30 to rotate as a whole for adaptive adjustment. At this time, the discharge barrel 13 is tilted to discharge the aluminate after the calcination reaction in the discharge barrel 13. When the discharge barrel 13 rotates and resets, the thermal insulation protection shell 30 is reset under the action of multiple first springs 32 to maintain balance and stability.

[0050] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. 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. An alumina micro powder production device, comprising a calcining cylinder (1), characterized in that: The surface of the calcining tube (1) is fixedly connected to a support frame (2); one side of the calcining tube (1) is rotatably connected to a switch door (5); the surface of the switch door (5) is fixedly connected to a controller (4); one side of the switch door (5) is fixedly connected to a closing plate (3); the inner wall of the calcining tube (1) is fixedly connected to a pressure gauge (6) and a temperature gauge (7); a discharge tube (13) is installed on the inner wall of the calcining tube (1); a plurality of protrusions (15) are fixedly connected to the inner wall of the discharge tube (13); a plurality of heating tubes (14) are fixedly connected to the inner wall of the calcining tube (1); and a material dumping and pulverizing mechanism is fixedly connected to the inner wall of the calcining tube (1); The material dumping and pulverizing mechanism comprises a support column (12) fixedly connected to the inner wall of the calcining cylinder (1); a conical hole (19) is provided on the surface of the discharge cylinder (13); a sealing plate (20) is fixedly connected to the surface of the discharge cylinder (13); a second ball head (22) is fixedly connected to the top end of the support column (12); the surface of the second ball head (22) is matched with the inner wall of the sealing plate (20); a balance column (16) is fixedly connected to the surface of the second ball head (22); the inner bottom wall of the calcining cylinder (1) is fixedly connected to the support plate (11); the upper surface of the support plate (11) is in contact with the lower surface of the discharge cylinder (13).

2. The alumina micro powder production device according to claim 1, characterized in that: The upper surface of the discharge cylinder (13) is fixedly connected to a guide connecting plate (10), the upper surface of the calcining cylinder (1) is fixedly connected to a U-shaped plate (8), the upper surface of the U-shaped plate (8) is fixedly connected to an electric telescopic rod (9), and the output end of the electric telescopic rod (9) passes through the inner wall of the calcining cylinder (1) and is fixedly connected to a first ball head (18).

3. The alumina micro powder production device according to claim 2, characterized in that: The inner wall of the guide connecting plate (10) is slidably connected to a slider (17), the inner wall of the slider (17) is sleeved with the surface of the first ball head (18), the inner wall of the sealing plate (20) is provided with an arc groove (23), the surface of the second ball head (22) is fixedly connected to a connecting block (21), and the connecting block (21) is slidably connected to the inner wall of the arc groove (23).

4. The alumina micro powder production device according to claim 1, characterized in that: The inner wall of the balance column (16) is rotatably connected to a heat insulation protection shell (30), the surface of the heat insulation protection shell (30) is fixedly connected to a first spring (32), and one end of the first spring (32) away from the heat insulation protection shell (30) is fixedly connected to the inner wall of the balance column (16).

5. The alumina micro powder production device according to claim 4, characterized in that: The inner wall of the heat-insulating protective shell (30) is rotatably connected to a heat-insulating baffle (39), the inner wall of the heat-insulating protective shell (30) is fixedly connected to a mounting box (38), the inner bottom wall of the mounting box (38) is fixedly connected to a high-temperature resistant motor (35), and the output end of the high-temperature resistant motor (35) is fixedly connected to a first bevel gear (36).

6. The alumina micro powder production device according to claim 5, characterized in that: The inner wall of the heat-insulating protective shell (30) is rotatably connected to a first linkage shaft (40) and a second linkage shaft (24); one end of the first linkage shaft (40) is fixedly connected to a first connecting shaft (31); one end of the first connecting shaft (31) passes through the inner wall of the mounting box (38) and is fixedly connected to a second bevel gear (37); the first bevel gear (36) is meshed with the second bevel gear (37).

7. The alumina micro powder production device according to claim 6, characterized in that: One end of the second linkage shaft (24) is fixedly connected to a second connecting shaft (34), one end of the second connecting shaft (34) passes through the inner wall of the mounting box (38) and is fixedly connected to a third bevel gear (33), and the first bevel gear (36) is meshed with the third bevel gear (33).

8. The alumina micro powder production device according to claim 7, characterized in that: A driving plate (29) is fixedly connected to the surfaces of the first linkage shaft (40) and the second linkage shaft (24), a toggle plate (27) is slidably connected to the surface of the driving plate (29), and a plurality of through holes (26) are formed on the surface of the toggle plate (27).

9. The alumina micro powder production device according to claim 8, characterized in that: A damping telescopic rod (28) is fixedly connected to the surfaces of the driving plate (29) and the shifting plate (27), and a second spring (25) is sleeved on the surface of the damping telescopic rod (28).

10. A method for producing alumina micropowder according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: Step 1: Before production, rare earth aluminate is placed in a discharge barrel (13). After closing the switch door (5), the operator controls the discharge barrel (13) through a plurality of heating tubes (14) to perform high-temperature heating and calcining treatment through the controller (4). During the heating process, the high-temperature resistant motor (35) is started. The output end of the high-temperature resistant motor (35) drives the first bevel gear (36) to rotate. The rotation of the first bevel gear (36) drives the third bevel gear (33) and the second connecting shaft (34) to rotate together. The second connecting shaft (34) rotates to drive the second linkage shaft (24) to rotate, the first bevel gear (36) rotates to drive the second bevel gear (37) to rotate, the second bevel gear (37) rotates through the first connecting shaft (31) to drive the first linkage shaft (40) to rotate, the first linkage shaft (40) rotates with the second linkage shaft (24), and drives the connected driving plate (29) and the toggle plate (27) to rotate together, and the toggle plate (27) rotates to stir the rare earth aluminate calcined in the discharge barrel (13); Step 2, after waiting for the temperature to drop, open the switch door (5), start the electric telescopic rod (9), and the output end of the electric telescopic rod (9) drives the first ball head (18) to rotate in the slider (17), so that the discharge barrel (13) as a whole rotates and tilts around the second ball head (22) as the center. At this time, the connecting block (21) slides in the arc groove (23) to adjust the space and avoid. In this process, when the toggle plate (27) contacts the inner wall of the discharge barrel (13) and is subjected to force, the toggle plate (27) is driven to compress the second spring (25) and move in the direction close to the driving plate (29). When the second linkage shaft (24) is subjected to force, the heat insulation protection shell (30) is driven to rotate as a whole to perform adaptive adjustment. At this time, the discharge barrel (13) is tilted to discharge the aluminate after the calcination reaction in the discharge barrel (13). When the discharge barrel (13) rotates and resets, the heat insulation protection shell (30) is reset under the action of multiple first springs (32) to maintain balance and stability.