Surfactant mixing and ball-milling device for preparing silicon nitride ceramic substrate

Abstract

The utility model is applicable to the technical field of silicon nitride ceramic substrate preparation, and provides a surfactant mixing and ball-milling device for silicon nitride ceramic substrate preparation, which comprises a ball mill, a feeding component and a driving component, the ball mill comprises a support arranged horizontally, a hollow circular ball milling barrel and a machine cover arranged in the horizontal direction. The feeding assembly is arranged at the top of the ball milling barrel and is used for injecting milling balls and grinding materials into the ball mill; the driving assembly is arranged at the end, away from the ball milling barrel, of the support and used for providing power for ball milling of the ball mill. The device solves the problems that when powder of a silicon nitride ceramic substrate is prepared in a ball milling mode, a ball mill is prone to being damaged due to the fact that the falling speed of grinding media (steel balls and ceramic balls) is too high, and powder is prone to being splashed due to the fact that the grinding media fall to hit the powder. The purpose of ensuring that the powder and the grinding medium smoothly enter the ball mill through the feeding assembly is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to silicon nitride ceramic substrate preparation technical field, more specifically, it relates to a kind of surface active agent mixing ball mill device for silicon nitride ceramic substrate preparation. BACKGROUND

[0002] Silicon nitride ceramic substrate is a kind of high-performance ceramic material, with high strength, excellent thermal stability, low thermal expansion coefficient, good electrical insulation performance and corrosion resistance etc. It is widely used in electronic packaging, aerospace, automotive industry and energy field, for the packaging of high-power electronic devices, thermal barrier coating of aeroengine, automobile engine parts and solar cell panel etc. The preparation of silicon nitride ceramic substrate involves powder preparation, forming, sintering and post-processing etc. multiple steps, by optimizing preparation process and performance, can obtain high-density, high-strength and high-reliability ceramic substrate, meet the needs of various high temperature, high pressure and high frequency applications.

[0003] At present, the manufacturing process of silicon nitride ceramic substrate on the market, including powder preparation, forming, sintering and post-processing, in the process of silicon nitride ceramic substrate preparation, first powder preparation is the first step of preparing ceramic substrate, usually adopts ball mill to process, to ensure that silicon nitride powder and surfactant are uniformly mixed. Silicon nitride powder and additives are put into ball mill tank, through the rotation of ball mill and the impact and friction of grinding medium, the uniform mixing of powder is realized.

[0004] Although this mixing method can realize the uniform mixing of powder, the powder preparation needs to add different kinds of powder into the ball mill, and because of the different kinds of powder, different kinds of grinding medium, such as steel ball and ceramic ball, need to be added into the ball mill barrel, and the opening of the ball mill is set as square large opening to facilitate the powder passing through, when the steel ball is added into the grinding machine, the grinding machine is easy to be damaged due to the too fast falling speed of the steel ball, and there may be the problem that the powder is splashed due to the impact of the falling steel ball on the powder already injected in the grinding machine.

[0005] Therefore, it is necessary to set a kind of surface active agent mixing ball mill device for silicon nitride ceramic substrate preparation to solve the above problems. UTILITY MODEL CONTENT

[0006] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a kind of surface active agent mixing ball mill device for silicon nitride ceramic substrate preparation.

[0007] To achieve the above object, the utility model provides the following technical scheme:

[0008] A kind of surface active agent mixing ball mill device for silicon nitride ceramic substrate preparation, including ball mill, feed assembly, drive assembly;

[0009] The ball mill comprises a support arranged horizontally, a ball mill barrel arranged in a hollow circular shape, and a cover arranged horizontally;

[0010] The feeding assembly is arranged on the top of the ball mill barrel and is used for injecting the grinding balls and the grinding material into the ball mill.

[0011] The driving assembly is arranged at the end of the support far from the ball mill barrel and is used for providing power for the ball milling of the ball mill.

[0012] The utility model further sets up: support top is provided with ball mill barrel, the ball mill barrel top is provided with the feeding port, the feeding port is suitable for the shape of feeding assembly, the feeding port position is connected with feeding assembly.

[0013] The utility model further sets up: the feeding assembly includes the feeding channel suitable for the shape of feeding port, one side of the feeding channel is connected with two groups of motor, the two groups of motor are arranged at an end distance apart along the horizontal direction, and each group of motor output end is connected with the drive rod.

[0014] The utility model further sets up: each group of drive rod is connected with the baffle, and the drive rod rotation drives the baffle to rotate.

[0015] By adopting the above technical scheme, the powder and the grinding medium (steel ball, ceramic ball) can smoothly pass through, when it is needed to inject the powder into the ball mill, the motor drives the drive rod to rotate, the baffle leaves a large enough channel in the vertical direction for the powder injection, the powder can quickly pass through and smoothly enter the inside of the ball mill; when the grinding medium (steel ball, ceramic ball) is injected into the ball mill, the motor drives the drive rod to rotate, and a channel is left between the two baffles, which is just suitable for the grinding medium (steel ball, ceramic ball) to pass through, at this time, the grinding medium can only pass through a few grinding media in the channel each time, and the falling speed of the grinding medium is slowed down, and the grinding medium slowly falls into the inside of the ball mill. The injection efficiency of the powder is ensured, the speed of the grinding medium falling into the inside of the ball mill is prevented from being too fast to damage the inner wall of the ball mill, and the grinding medium is prevented from quickly falling into the inside of the ball mill to hit the powder that has entered the inside of the ball mill, so that the powder is prevented from splashing out.

[0016] The utility model further sets up: the driving assembly includes the drive auxiliary part connected on the ball mill barrel, the drive motor connected with the top of the support, and the drive motor connected with one end of the drive frame.

[0017] The utility model further sets up: the drive auxiliary part is connected with the output end of the drive motor through the drive frame, and the drive motor provides the driving force for the drive auxiliary part.

[0018] To sum up, the application includes at least one of the following beneficial technical effects:

[0019] 1、The application sets the feeding assembly to ensure that the powder and the grinding medium (steel ball, ceramic ball) pass smoothly. When it is necessary to inject powder into the ball mill, the motor drives the driving rod to rotate, allowing the baffle to leave a large enough channel for powder injection in the vertical direction, ensuring that the powder passes quickly and smoothly into the interior of the ball mill. When it is necessary to inject grinding medium (steel ball, ceramic ball) into the ball mill, the motor drives the driving rod to rotate, leaving a channel between the two baffles just large enough for the grinding medium (steel ball, ceramic ball) to pass through. At this time, the falling speed of the grinding medium is slowed down because the channel can only allow a few grinding media to pass through at a time, and the grinding medium slowly falls into the interior of the ball mill. This ensures the efficiency of powder injection, while avoiding the speed of the grinding medium falling into the interior of the ball mill being too fast, damaging the inner wall of the ball mill, and also avoiding the grinding medium quickly falling into the interior of the ball mill, hitting the powder that has already entered the interior of the ball mill, causing the powder to splash out.

[0020] 2、The application sets the feeding assembly and the cooperation of the cover. When the ball mill is started, the cover is on the top of the feeding assembly to prevent the powder from overflowing from the feeding assembly. When it is necessary to add powder or grinding medium (steel ball, ceramic ball) to the feeding assembly, the cover is not on the top of the feeding assembly to ensure that the powder or grinding medium (steel ball, ceramic ball) passes smoothly. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The utility model relates to a surface active agent mixing ball mill device for preparing silicon nitride ceramic substrate.

[0022] Figure 2 The Figure 1 explosion schematic diagram.

[0023] Figure 3 The utility model relates to a surface active agent mixing ball mill device for preparing silicon nitride ceramic substrate.

[0024] BRIEF DESCRIPTION OF DRAWINGS

[0025] 2、The utility model relates to a surface active agent mixing ball mill device for preparing silicon nitride ceramic substrate.

[0026] 3、The utility model relates to a surface active agent mixing ball mill device for preparing silicon nitride ceramic substrate. DETAILED DESCRIPTION

[0027] It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other without conflict. The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0028] It should be noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0029] Embodiment one, please refer to Figures 1-3 The utility model provides the following technical scheme:

[0030] Specifically refers to a kind of surface active agent mixing ball mill device for preparing silicon nitride ceramic substrate, including ball mill 1, feed assembly 2, drive assembly 3;Ball mill 1 is used to mix uniformly the powder added in ball mill 1 and is made into smaller particles, ensure subsequent use effect.Powder and grinding medium injection are provided with passageway by feed assembly 2, ensure that powder and grinding medium pass through passageway smoothly into the inside of ball mill 1;Drive assembly 3 provides power for ball mill 1, by drive assembly 3 start driving ball mill 1 to work.

[0031] Please refer to Figure 2 Ball mill 1 includes support 12 along horizontal arrangement, support 12 top is equipped with ball mill barrel 11, support 12 provides installation environment for ball mill barrel 11, ball mill barrel 11 is set to hollow circular structure, ball mill barrel 11 top is equipped with feed inlet 13, feed inlet 13 is set to hollow square structure, feed inlet 13 is shape adaptation with feed assembly 2, ensure that powder and grinding medium from feed assembly 2 pass through feed inlet 13 and smoothly enter the inside of ball mill barrel 11 and carry out ball milling.

[0032] Please refer to Figure 2 Feed assembly 2 includes feed channel 21 shape adaptation with feed inlet 13, feed channel 21 facilitates powder and grinding medium to enter the inside of ball mill 1, feed channel 21 one side is connected with two groups of motor 22, two groups of motor 22 are set along horizontal direction interval one end distance, and the output end of each group of motor 22 is connected with driving rod 23, and each group of driving rod 23 is connected with baffle 24 in penetration, and driving rod 23 rotation drives baffle 24 to carry out 180 degrees rotation;Feed channel 21 top is provided with machine cover 14, when ball mill 1 starts, machine cover 14 covers the top of feed assembly 2, avoid powder from feed assembly 2 overflow, when needing to add powder or grinding medium (steel ball, ceramic ball) in feed assembly 2, machine cover 14 is not set in the top of feed assembly 2, ensure that powder or grinding medium (steel ball, ceramic ball) pass through smoothly.

[0033] Specifically, please refer to Figure 2 , Figure 3When it is needed to inject the powder into the ball mill 1, the motor 22 drives the driving rod 23 to rotate, and the baffle 24 leaves a large enough channel for the powder injection in the vertical direction, so as to ensure that the powder passes through quickly and enters the ball mill 1 smoothly; when the grinding medium (steel ball, ceramic ball) is injected into the ball mill 1, the motor 22 drives the driving rod 23 to rotate, and the two groups of baffles 24 leave a channel just for the grinding medium (steel ball, ceramic ball) to pass through, at this time, the falling speed of the grinding medium is slowed down because the channel can only supply a few grinding media to pass through each time, and the grinding medium slowly falls into the ball mill 1.

[0034] The adjustment mode of the feeding assembly 2 ensures the injection efficiency of the powder, and can avoid the problems that the grinding medium falls into the ball mill 1 too fast to damage the inner wall of the ball mill 1, and that the grinding medium quickly falls into the ball mill 1 to hit the powder that has entered the ball mill 1, resulting in the problem of the powder splashing out.

[0035] Referring to Figure 2 The driving assembly 3 includes a driving auxiliary part 33 connected to the ball mill barrel 11, a driving motor 32 connected to the top of the support 12, and a driving motor 32 connected to one end of a driving frame 31, the driving frame 31 provides a mounting environment for the driving auxiliary part 33 and the driving motor 32, so that the driving auxiliary part 33 and the driving motor 32 can stably operate without shaking during actual use. The driving auxiliary part 33 penetrates the driving frame 31 and is connected to the output end of the driving motor 32, and the driving motor 32 provides driving force for the driving auxiliary part 33.

[0036] Specifically, the driving motor 32 is started to drive the driving auxiliary part 33 to rotate, the driving auxiliary part 33 drives the ball mill 1 to start, so that the powder and the grinding medium (steel ball, ceramic ball) in the ball mill barrel 11 can be ground, and smaller powder can be obtained, and the grinding is completed.

[0037] Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.

Claims

1. A ball milling apparatus for mixing surfactants in the preparation of silicon nitride ceramic substrates, characterized in that: Includes a ball mill (1), a feeding assembly (2), and a drive assembly (3); The ball mill (1) includes a support (12) arranged horizontally, a ball mill barrel (11) configured as a hollow circle, and a machine cover (14) arranged horizontally. The feeding assembly (2) is disposed on the top of the ball mill barrel (11), and the feeding assembly (2) is used to inject grinding balls and abrasive into the ball mill (1); The drive assembly (3) is located at the end of the bracket (12) away from the ball mill barrel (11) and is used to provide power for the ball mill (1) to grind.

2. The surfactant mixing ball milling apparatus for preparing silicon nitride ceramic substrates according to claim 1, characterized in that: The top of the support (12) is provided with a ball mill barrel (11), and the top of the ball mill barrel (11) is provided with a feed inlet (13). The feed inlet (13) is adapted to the shape of the feed assembly (2), and the feed assembly (2) is connected to the position of the feed inlet (13).

3. The surfactant mixing ball milling apparatus for preparing silicon nitride ceramic substrates according to claim 1, characterized in that: The feeding assembly (2) includes a feeding channel (21) adapted to the shape of the feeding port (13). Two sets of motors (22) are connected to one side of the feeding channel (21). The two sets of motors (22) are set at a distance from each other in the horizontal direction. Each set of motors (22) has a drive rod (23) connected to its output end.

4. The surfactant mixing ball milling apparatus for preparing silicon nitride ceramic substrates according to claim 3, characterized in that: Each set of drive rods (23) is connected to a baffle (24) through it. The drive rods (23) rotate to drive the baffles (24) to rotate.

5. The surfactant mixing ball milling apparatus for preparing silicon nitride ceramic substrates according to claim 1, characterized in that: The drive assembly (3) includes a drive auxiliary component (33) connected to the ball mill barrel (11), a drive motor (32) connected to the top of the support (12), and a drive motor (32) connected to one end of the drive frame (31).

6. The surfactant mixing ball milling apparatus for preparing silicon nitride ceramic substrates according to claim 5, characterized in that: The drive auxiliary component (33) passes through the drive frame (31) and is connected to the output end of the drive motor (32), and the drive motor (32) provides driving force to the drive auxiliary component (33).

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