Screening device for aluminum nitride preparation

Abstract

The utility model relates to the technical field of aluminum nitride preparation, and discloses a screening device for aluminum nitride preparation, which comprises a main body, the main body is provided with a vertically through storage groove, the inner wall of the storage groove is fixedly provided with a filter screen, the middle position of the filter screen is provided with a circular fixing plate, the bottom of the fixing plate is fixedly provided with a vibration motor, and the vibration motor is fixedly provided with a vibration motor. The two ends of the top of the main body are fixedly provided with supports, the middle positions of the tops of the supports are fixedly provided with motors, and the output ends of the motors are fixedly provided with rotating rods which penetrate through the supports and extend into the containing grooves. According to the aluminum nitride powder screening device, the rotating rod drives the stirring plate to rotate, so that aluminum nitride powder on the filter screen can be rapidly screened, under the condition that the rotating rod drives the stirring plate to rotate, the stirring plate can push large-particle aluminum nitride powder to the notch, finally, the large-particle aluminum nitride powder can be discharged from the discharging pipe, and therefore the situation that the large-particle aluminum nitride powder is accumulated on the filter screen and influences screening of the aluminum nitride powder is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of aluminum nitride preparation, in particular to a screening device for aluminum nitride preparation. Background Art

[0002] Aluminum nitride ceramics are ideal heat dissipation and packaging materials for the new generation of large-scale integrated circuits, semiconductor module circuits and high-power devices; they are the best additives for improving the thermal conductivity and mechanical properties of polymer materials. For example, adding aluminum nitride powder to epoxy resin can significantly improve its thermal conductivity. It is widely used in high-power modules. During the preparation process of aluminum nitride, it needs to be screened. Usually, the screening device can screen out larger particles of aluminum nitride powder. However, when the common screening device is screening the aluminum nitride powder, although the filter can intercept large particles of aluminum nitride, a large amount of large particles of aluminum nitride powder will also remain on the filter. After a long time, accumulation will occur on the filter. If it is not handled in time, it will affect the normal screening of aluminum nitride. For this reason, the present application proposes a screening device for preparing aluminum nitride. Utility Model Content

[0003] In order to solve the problems raised in the above-mentioned background technology, the utility model provides the following technical solutions: a screening device made of aluminum nitride, including a main body, a storage groove which runs through from top to bottom, a filter screen is fixedly installed on the inner wall of the storage groove, a circular fixed plate is arranged in the middle position of the filter screen, a vibration motor is fixedly installed at the bottom of the fixed plate, brackets are fixedly installed at both ends of the top of the main body, a motor is fixedly installed in the middle position of the top of the bracket, a rotating rod which passes through the bracket and extends into the storage groove is fixedly installed at the output end of the motor, three toggle plates are evenly and fixedly installed on the side wall of the rotating rod in the storage groove, the side surface of the toggle plate is arranged in an arc shape, an L-shaped notch is opened on one side of the inner wall of the storage groove, and one end of the horizontal straight part of the notch is inclined downward and extends to the side wall of the main body.

[0004] Furthermore, the bottom end of the vertical part of the slot is flush with the top of the filter, and an L-shaped discharge pipe is fixedly installed at one end of the horizontal part of the slot, the horizontal part of the discharge pipe is connected to the horizontal part of the slot, and the vertical part of the discharge pipe is downward, and the horizontal part of the discharge pipe is set to the same inclination as the horizontal part of the slot.

[0005] Furthermore, the bottoms of the three toggle plates are all in contact with the top of the filter, and the ends of the three toggle plates away from the rotating rod are all in contact with the inner wall of the storage slot.

[0006] Furthermore, a funnel-shaped collecting cover is fixedly installed on the bottom of the main body.

[0007] Furthermore, a vertical fixing rod is fixedly installed at the center position of the top of the fixing plate, a slot is opened at the bottom end of the rotating rod, and the slot at the bottom end of the rotating rod is rotatably plugged into the fixing rod.

[0008] Furthermore, the center of the rotating rod, the center of the fixed plate and the center of the storage groove are all located on the same vertical axis.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The vibration of the vibration motor can make the filter vibrate, so that the aluminum nitride powder on the filter can be quickly screened, and large particles of aluminum nitride powder will be intercepted on the filter. When the rotating rod drives the toggle plate to rotate, the curved surface on the side of the toggle plate will push the large particles of aluminum nitride powder to the notch, and finally the large particles of aluminum nitride powder will be discharged from the discharge pipe, thereby preventing large particles of aluminum nitride powder from accumulating on the filter and affecting the screening of aluminum nitride powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a schematic diagram of a partial cross-sectional structure of the utility model;

[0014] Figure 3 It is a schematic diagram of the cross-sectional structure of the connection between the main body, the filter screen and the collection cover of the utility model;

[0015] Figure 4 It is a schematic diagram of the structure of the utility model from a partial top view;

[0016] Figure 5 This is a schematic diagram of the structure of the connection between the rotating rod and the toggle plate of the utility model;

[0017] Figure 6 It is a schematic diagram of the cross-sectional structure of the connection between the rotating rod and the fixed plate of the utility model;

[0018] In the figure: 1. main body; 2. filter screen; 3. fixing plate; 4. fixing rod; 5. bracket; 6. motor; 7. rotating rod; 8. toggle plate; 9. vibration motor; 10. collection cover; 11. notch; 12. discharge pipe. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] Depend on Figure 1-6 The utility model includes a main body 1, on which a storage groove is provided which passes through from top to bottom, a filter screen 2 is fixedly installed on the inner wall of the storage groove, a circular fixing plate 3 is arranged in the middle of the filter screen 2, a vibration motor 9 is fixedly installed at the bottom of the fixing plate 3, brackets 5 are fixedly installed at both ends of the top of the main body 1, a motor 6 is fixedly installed in the middle of the top of the bracket 5, a rotating rod 7 which penetrates the bracket 5 and extends into the storage groove is fixedly installed at the output end of the motor 6, three toggle plates 8 are evenly and fixedly installed on the side wall of the rotating rod 7 in the storage groove, and the side surface of the toggle plate 8 is arranged in an arc shape, An L-shaped notch 11 is provided on one side of the inner wall of the storage tank, and one end of the horizontal part of the notch 11 is inclined downward and extends to the side wall of the main body 1. The vibration generated by the vibration motor 9 is transmitted to the filter 2 through the fixed plate 3, thereby accelerating the screening of the aluminum nitride powder on the filter 2. However, the control motor 6 can drive the rotating rod 7 to rotate the three toggle plates 8 on the top of the filter 2, thereby pushing the large-particle aluminum nitride powder intercepted on the top of the filter 2, and finally pushing the intercepted large-particle aluminum nitride powder to the notch 11, thereby avoiding the large-particle aluminum nitride powder from accumulating in large quantities on the filter 2.

[0021] At the same time, the bottom end of the vertical part of the slot 11 is flush with the top of the filter screen 2, and an L-shaped discharge pipe 12 is fixedly installed at one end of the horizontal part of the slot 11, the horizontal part of the discharge pipe 12 is connected to the horizontal part of the slot 11, and the vertical part of the discharge pipe 12 is downward, and the horizontal part of the discharge pipe 12 is set to have an inclination different from that of the slot 11, so that the aluminum nitride powder entering the slot 11 can smoothly slide into the discharge pipe 12.

[0022] In addition, the bottoms of the three toggle plates 8 are all in contact with the top of the filter 2, and the ends of the three toggle plates 8 away from the rotating rod 7 are all in contact with the inner wall of the storage groove, so that the three toggle plates 8 can push the large-particle aluminum nitride powder intercepted on the top of the filter 2. Under the action of the curved side of the toggle plate 8, the aluminum nitride powder can be pushed into the notch 11 on one side of the inner wall of the storage groove, and finally the large-particle aluminum nitride powder is uniformly discharged from the discharge pipe 12.

[0023] In addition, a funnel-shaped collecting cover 10 is fixedly installed at the bottom of the main body 1 , and the small-particle aluminum nitride powder sieved by the filter screen 2 can be uniformly collected through the collecting cover 10 .

[0024] In addition, a vertical fixing rod 4 is fixedly installed at the center position of the top of the fixing plate 3, a slot is opened at the bottom end of the rotating rod 7, and the slot at the bottom end of the rotating rod 7 is rotatably inserted into the fixing rod 4. Through the fixing rod 4 at the top of the fixing plate 3, the position of the bottom end of the rotating rod 7 can be fixed, making the rotating rod 7 more stable during the rotation process.

[0025] In addition, the center of the rotating rod 7, the center of the fixed plate 3 and the center of the storage slot are all located on the same vertical axis, so that the rotating rod 7 can smoothly drive the three toggle plates 8 to rotate in the storage slot.

[0026] 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", "comprises" or any other variations 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.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A screening device made of aluminum nitride, comprising a main body (1), characterized in that: The main body (1) is provided with a storage groove which passes through from top to bottom, a filter screen (2) is fixedly installed on the inner wall of the storage groove, a circular fixing plate (3) is arranged in the middle of the filter screen (2), a vibration motor (9) is fixedly installed at the bottom of the fixing plate (3), brackets (5) are fixedly installed at both ends of the top of the main body (1), a motor (6) is fixedly installed in the middle of the top of the bracket (5), a rotating rod (7) which passes through the bracket (5) and extends into the storage groove is fixedly installed at the output end of the motor (6), three toggle plates (8) are evenly and fixedly installed on the side wall of the rotating rod (7) located in the storage groove, the side surface of the toggle plate (8) is arranged in an arc shape, an L-shaped notch (11) is provided on one side of the inner wall of the storage groove, one end of the horizontal straight portion of the notch (11) is tilted downward and extends to the side wall of the main body (1).

2. A screening device made of aluminum nitride according to claim 1, characterized in that: The bottom end of the vertical portion of the notch (11) is flush with the top of the filter screen (2), and an L-shaped discharge pipe (12) is fixedly installed at one end of the horizontal portion of the notch (11), the horizontal portion of the discharge pipe (12) is butted against the horizontal portion of the notch (11), and the vertical portion of the discharge pipe (12) is downward, and the horizontal portion of the discharge pipe (12) is arranged to have the same inclination as the horizontal portion of the notch (11).

3. The screening device made of aluminum nitride according to claim 1, characterized in that: The bottoms of the three toggle plates (8) are all in contact with the top of the filter screen (2), and the ends of the three toggle plates (8) away from the rotating rod (7) are all in contact with the inner wall of the storage groove.

4. The screening device made of aluminum nitride according to claim 1, characterized in that: A funnel-shaped collecting cover (10) is fixedly mounted on the bottom of the main body (1).

5. The screening device made of aluminum nitride according to claim 1, characterized in that: A vertical fixing rod (4) is fixedly installed at the center position of the top of the fixing plate (3), a slot is provided at the bottom end of the rotating rod (7), and the slot at the bottom end of the rotating rod (7) is rotatably plugged into the fixing rod (4).

6. A screening device made of aluminum nitride according to claim 1, characterized in that: The center of the rotating rod (7), the center of the fixing plate (3) and the center of the storage groove are all located on the same vertical axis.

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