Aluminum nitride powder production device

Abstract

The utility model relates to the field of aluminum nitride production, and discloses an aluminum nitride powder production device which comprises a main body component and an improved component, the main body component comprises a reaction kettle, a kettle cover is arranged at the top end of the reaction kettle, one side of the reaction kettle is communicated with a feeding pipe, and a loading tray located below the feeding pipe is arranged in the reaction kettle; the improved component comprises a lifting mechanism which is arranged in the reaction kettle and is used for driving the loading tray to lift; the reaction kettle further comprises a connecting hole formed in the middle of the kettle cover in a penetrating mode, a bearing is installed in the connecting hole, a vertical shaft rod is connected to the bearing in a penetrating mode, and a pressing disc with the diameter slightly smaller than the inner diameter of the loading disc is connected to the bottom end of the shaft rod. Under the action of the lifting mechanism, the loading disc can be adjusted to enable metal aluminum powder in the loading disc to be in contact with the pressing disc, then through the action of the driving mechanism, the shaft rod drives the pressing disc to rotate, and therefore the metal aluminum powder in the loading disc is flattened through rotation of the pressing disc, the stacking thickness of the metal aluminum powder is reduced, and the stacking efficiency is improved. And the metal aluminum powder is in contact with the mixed gas as much as possible.

Description

Technical Field

[0001] The utility model belongs to the field of aluminum nitride production, and specifically relates to a production device for aluminum nitride powder. Background Art

[0002] There are various methods for producing aluminum nitride powder. For example: chemical vapor deposition method, direct nitridation method, self-propagating high-temperature synthesis method, carbothermal reduction method, etc.

[0003] Among them, in the chemical vapor deposition method, ammonia gas and nitrogen gas are usually used as reaction gases, which react with metallic aluminum powder in the reaction chamber to generate aluminum nitride powder. This process needs to be carried out under high temperature and high pressure conditions so that the mixture of metallic aluminum powder and ammonia gas and nitrogen gas can be in full contact.

[0004] However, in the reaction kettle, after the metallic aluminum powder is poured into it, it always accumulates at the bottom of the reaction kettle, and there will be a certain stacking problem between the powders, which results in that the stacked part is not in full contact with the mixed gas. Content of the Utility Model

[0005] Technical problem to be solved: How to solve the problem of powder stacking in the reaction kettle.

[0006] Technical solution: The utility model provides a production device for aluminum nitride powder, which includes a main body component and an improved component: The main body component includes a reaction kettle, the top of the reaction kettle is provided with a kettle cover, one side of which is communicated with a feed pipe, and a loading tray is arranged inside the reaction kettle below the feed pipe; The improved component includes a lifting mechanism arranged in the reaction kettle for driving the loading tray to lift and lower; It also includes a connection hole penetrating through the middle of the kettle cover, a bearing is installed in the connection hole, a vertical shaft rod is penetrated and connected on the bearing, and the bottom end of the shaft rod is connected with a pressing plate whose diameter is slightly smaller than the inner diameter of the loading tray; In addition, a driving mechanism for driving the shaft rod to rotate is also arranged on the kettle cover.

[0007] Further, the driving mechanism includes a servo motor installed on the top of the kettle cover, and gears that are fixedly sleeved on the output shaft of the servo motor and the outer peripheral side of the shaft rod and are meshed with each other and located above the kettle cover.

[0008] Further, a top cover is installed on the top of the kettle cover, the top cover covers the driving mechanism, and a plurality of uniformly distributed heat dissipation holes are also penetrated and opened on it.

[0009] Further, the outer ring of the bearing is fixedly connected with the inner wall of the connection hole, and its inner ring has an interference fit with the shaft rod.

[0010] Further, the lifting mechanism includes a cylinder installed between the bottom end inside the reaction kettle and the loading tray and parallel to the shaft rod, the connecting end of the cylinder is fixedly connected with the bottom end inside the reaction kettle, and its telescopic end is fixedly connected with the bottom end of the loading tray.

[0011] Further, the outer wall of the loading tray contacts the inner wall of the reaction kettle, and both are smooth wall surfaces; in addition, the top end of the loading tray is configured to form a rounded corner structure.

[0012] Technical effect: In the present utility model, under the action of the lifting mechanism, the loading tray can be adjusted so that the aluminum powder therein contacts the pressing plate, and then under the action of the driving mechanism, the shaft rod drives the pressing plate to rotate, thereby using the rotation of the pressing plate to level the aluminum powder in the loading tray, reducing the stacking thickness of the aluminum powder, and enabling the aluminum powder to contact the mixed gas as much as possible. Description of the Drawings

[0013] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0014] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0015] Figure 2 is a front view structural schematic diagram of the present utility model;

[0016] Figure 3 is an internal structural schematic diagram of the present utility model;

[0017] In the figure: 1, reaction kettle; 2, kettle cover; 3, feed pipe; 4, loading tray; 5, lifting mechanism; 501, cylinder; 6, bearing; 7, shaft rod; 8, pressing plate; 9, driving mechanism; 901, servo motor; 902, gear; 10, top cover. Detailed Embodiments

[0018] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0019] The aluminum nitride powder production device provided by this detailed embodiment, as Figure 1 , Figure 2 and Figure 3 shown, includes a main body member and an improved member, wherein:

[0020] The main body member includes a reaction kettle 1, a kettle cover 2 is provided at the top end of the reaction kettle 1, a feed pipe 3 is communicated with one side thereof, and a loading tray 4 is arranged inside the reaction kettle 1 below the feed pipe 3.

[0021] The improved component includes a lifting mechanism 5 for driving the charging tray 4 to lift and lower, which is arranged in the reactor 1. The lifting mechanism 5 includes a cylinder 501 installed between the bottom end of the reactor 1 and the charging tray 4 and parallel to the shaft 7. The connecting end of the cylinder 501 is fixedly connected to the bottom end of the reactor 1, and the telescopic end is fixedly connected to the bottom end of the charging tray 4. It also includes a connecting hole through the middle of the reactor cover 2, in which a bearing 6 is installed, and a vertical shaft 7 is connected to the bearing 6. The bottom end of the shaft 7 is connected to a pressure plate 8 with a diameter slightly smaller than the inner diameter of the charging tray 4. Specifically, the outer ring of the bearing 6 is fixedly connected to the inner wall of the connecting hole, and its inner ring is interference fit with the shaft 7. In addition, the reactor cover 2 is also provided with a driving mechanism 9 for driving the shaft 7 to rotate. The driving mechanism 9 includes a servo motor 901 installed at the top of the reactor cover 2, and the output shaft of the servo motor 901 and the outer peripheral side of the shaft 7 are fixedly sleeved with mutually meshing gears 902 located above the reactor cover 2. In this way, under the action of the lifting mechanism 5, the charging tray 4 can be adjusted to the point where the metal aluminum powder therein contacts the pressure plate 8, and then through the action of the driving mechanism 9, the shaft 7 drives the pressure plate 8 to rotate, so that the rotation of the pressure plate 8 can be used to flatten the metal aluminum powder in the charging tray 4, reduce the thickness of the metal aluminum powder stack, and allow the metal aluminum powder to contact the mixed gas as much as possible.

[0022] In addition, a top cover 10 is installed on the top of the kettle cover 2. While the top cover 10 covers and protects the driving mechanism 9, a plurality of evenly distributed heat dissipation holes are also opened through it to dissipate heat.

[0023] It is worth mentioning that the outer wall of the charging tray 4 contacts the inner wall of the reactor 1, and both are smooth walls; in addition, the top of the charging tray 4 is formed into a rounded structure. Such a structural design is convenient for receiving the metal aluminum powder entering the feeding pipe 3, and prevents the metal aluminum powder from falling from the gap between the charging tray 4 and the reactor 1.

[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0025] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An aluminum nitride powder production device, comprising a main component and an improved component: The main component comprises a reaction kettle (1), a kettle cover (2) is arranged at the top of the reaction kettle (1), one side of which is connected to a feed pipe (3), and is characterized in that: A loading tray (4) is arranged inside the reaction kettle (1) and is located below the feeding pipe (3); The improved component comprises a lifting mechanism (5) arranged in the reaction kettle (1) for driving the charging tray (4) to be lifted and lowered; and also comprises a connecting hole extending through the middle of the kettle cover (2), in which a bearing (6) is installed, a vertical shaft (7) extending through the bearing (6), and a pressure plate (8) having a diameter slightly smaller than the inner diameter of the charging tray (4) is connected to the bottom end of the shaft (7); in addition, a driving mechanism (9) for driving the shaft (7) to rotate is also arranged on the kettle cover (2).

2. The aluminum nitride powder production device according to claim 1, characterized in that: The driving mechanism (9) comprises a servo motor (901) installed at the top of the kettle cover (2), and the output shaft of the servo motor (901) and the outer peripheral side of the shaft (7) are fixedly sleeved with gears (902) that mesh with each other and are located above the kettle cover (2).

3. The aluminum nitride powder production device according to claim 2, characterized in that: A top cover (10) is installed on the top of the kettle cover (2), the top cover (10) covers the driving mechanism (9), and a plurality of evenly distributed heat dissipation holes are also penetrated and opened on the top cover (10).

4. The aluminum nitride powder production device according to claim 1, characterized in that: The outer ring of the bearing (6) is fixedly connected to the inner wall of the connecting hole, and the inner ring thereof is interference fit with the shaft rod (7).

5. The aluminum nitride powder production device according to claim 1, characterized in that: The lifting mechanism (5) comprises a cylinder (501) installed between the inner bottom end of the reaction kettle (1) and the charging tray (4) and parallel to the shaft (7); the connecting end of the cylinder (501) is fixedly connected to the inner bottom end of the reaction kettle (1), and the telescopic end of the cylinder (501) is fixedly connected to the bottom end of the charging tray (4).

6. The aluminum nitride powder production device according to claim 1, characterized in that: The outer wall of the charging tray (4) contacts the inner wall of the reaction kettle (1), and both are smooth wall surfaces; in addition, the top end of the charging tray (4) is formed into a rounded structure.

Images