A coarse and fine sieving device for silicon micro powder

Abstract

This utility model provides a coarse and fine screening device for silicon micropowder, relating to the field of silicon micropowder processing technology. It includes a screening mechanism with a screening section at its top. In use, the device utilizes a first motor, eccentric wheel, connecting rod, movable plate, and limiting block to drive a movable frame to reciprocate within a movable groove. Simultaneously, the screening plate screens the silicon micropowder on its top. Then, a second motor, round shaft, convex wheel, and limiting spring coordinate to cause a vibrating frame to reciprocate, vibrating the silicon micropowder within it. The screening plate further screens the silicon micropowder. This structure and method enable multi-stage screening of silicon micropowder, significantly improving screening efficiency and effectiveness, making it more convenient for subsequent use, and enhancing the practicality of the screening device.

Description

Technical Field

[0001] This utility model relates to the field of silicon micropowder processing technology, and in particular to a silicon micropowder coarse and fine screening device. Background Technology

[0002] Silicon micropowder, as an important inorganic non-metallic material, plays an indispensable role in many fields due to its excellent dielectric properties, low coefficient of thermal expansion, high thermal conductivity, and chemical stability. In the field of electronic packaging, silicon micropowder is added in large quantities to epoxy molding compounds to improve the material's hardness, reduce the exothermic peak temperature of the curing reaction, decrease the coefficient of linear expansion and curing shrinkage, thereby reducing internal stress, enhancing the mechanical strength of the epoxy molding compound, and making its coefficient of linear expansion infinitely close to that of the chip, ensuring the reliability of chip packaging. In the production and processing of silicon micropowder, precise coarse and fine sieving is a key step in ensuring product quality and meeting the needs of different application scenarios.

[0003] In the prior art, when processing silicon micro powder, a sieving device is required to separate coarse and fine silicon micro powder to make it easier for subsequent use. However, traditional sieving devices can only sieve silicon micro powder through a single structure and method, resulting in low sieving efficiency and inability to perform effective sieving, which seriously affects the subsequent use of silicon micro powder and greatly reduces the practicality of the sieving device. Utility Model Content

[0004] The purpose of this invention is to solve the problem that the above-mentioned equipment cannot perform rapid and effective screening of silicon micro powder, which leads to the silicon micro powder becoming unusable in subsequent use. Therefore, a coarse and fine screening device for silicon micro powder is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a coarse and fine sieving device for silicon micro powder, comprising a sieving mechanism, wherein a sieving mechanism is provided on the top of the sieving mechanism;

[0006] The screening mechanism includes a base plate, a mounting frame fixedly installed on the top of the base plate, two limiting blocks fixedly installed on one side of the outer wall of the mounting frame, a movable plate movably inserted between the inner surface walls of the two limiting blocks, a connecting rod movably sleeved on the outer surface wall of the movable plate, a first motor fixedly installed on one side of the outer wall of the mounting frame, an eccentric wheel fixedly sleeved on the output end of the first motor, and the outer surface wall of the eccentric wheel movably connected to the inner surface wall of the connecting rod, two movable slots opened on the outer surface wall of the mounting frame, a movable frame movably embedded between the inner surface walls of the two movable slots, and the outer surface wall of the movable frame movably connected to the inner surface wall of the movable plate.

[0007] Preferably, the outer wall of the movable frame is fixedly connected to two discharge pipes, the inner wall of the movable frame is provided with a screening plate, and the inner wall of the screening plate is provided with two fixing springs.

[0008] Preferably, the inner surface of the screening plate is provided with two limiting rods, and one side of the outer wall of the limiting rod is fixedly connected to one side of the outer wall of the fixing spring.

[0009] Preferably, the screening mechanism includes a mounting box, two limiting springs are fixedly installed on the bottom of the inner wall of the mounting box, a vibrating frame is provided on the inner surface of the mounting box, the bottom of the vibrating frame is fixedly connected to the top of the limiting springs, and a screening plate is provided on the inner surface of the vibrating frame.

[0010] Preferably, a second motor is fixedly installed on one side of the outer wall of the mounting box, a round shaft is movably inserted between the inner surface walls of the mounting box, and the inner surface wall of the round shaft is fixedly connected to the output end of the second motor. Two convex wheels are fixedly sleeved on the outer surface wall of the round shaft.

[0011] Preferably, a guide plate is fixedly installed on the inner wall of the mounting box, four compression springs are provided on the inner wall of the screening plate, and four limiting shafts are provided on the inner wall of the screening plate, with one side of the outer wall of the limiting shaft being fixedly connected to one side of the outer wall of the compression spring.

[0012] Preferably, the top of the base plate is fixedly connected to the bottom of the mounting box.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] In use, when coarse and fine screening of silicon micropowder is required, the silicon micropowder is first conveyed into the movable frame. Then, under the action of the first motor, eccentric wheel, connecting rod, movable plate, and limiting block, the movable frame can be driven to reciprocate within the movable trough. Simultaneously, under the action of the screening plate, the silicon micropowder on the top of the screening plate can be screened. The fine silicon micropowder after screening will enter the vibrating frame from one of the discharge pipes. With the cooperation of the second motor, round shaft, convex wheel, and limiting spring, the vibrating frame can be made to reciprocate, causing the silicon micropowder inside to vibrate. Under the action of the screening plate, the silicon micropowder can be further screened. Through the above structure and method, silicon micropowder can be screened in multiple stages, greatly improving the screening effect and efficiency, making it more convenient for subsequent use, and improving the practicality of the screening device.

[0015] In use, after the silicon micropowder is screened, the screening plate and sieve plate can be quickly disassembled by means of a fixed spring, a limiting rod, a compression spring, and a limiting shaft. This makes it easier for subsequent workers to clean and maintain the screening plate and sieve plate, further improving the practicality of the device. Attached Figure Description

[0016] Figure 1 This utility model provides a perspective view of the main structure of a coarse and fine silicon powder screening device;

[0017] Figure 2 This utility model provides a split diagram of the screening mechanism in a coarse and fine silicon micropowder screening device;

[0018] Figure 3 This utility model provides a split diagram of the screening mechanism in a coarse and fine silicon micropowder screening device;

[0019] Figure 4 A cross-sectional view of the screening mechanism in a coarse and fine screening device for silicon micropowder is provided for this utility model.

[0020] Legend:

[0021] 1. Screening mechanism; 11. Base plate; 12. Mounting frame; 121. Limiting block; 122. Movable plate; 123. Linking rod; 124. First motor; 125. Eccentric wheel; 13. Movable groove; 131. Movable frame; 132. Discharge pipe; 133. Screening plate; 134. Fixed spring; 135. Limiting rod; 2. Screening mechanism; 21. Mounting box; 211. Limiting spring; 22. Vibrating frame; 221. Screening plate; 222. Compression spring; 223. Limiting shaft; 23. Second motor; 24. Round shaft; 241. Convex wheel; 25. Guide plate. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0024] Example 1: As Figures 1-4 As shown, this utility model provides a coarse and fine sieving device for silicon micro powder, including a screening mechanism 1, and a sieving mechanism 2 is provided on the top of the screening mechanism 1.

[0025] The screening mechanism 1 includes a base plate 11, a mounting frame 12 fixedly mounted on the top of the base plate 11, two limiting blocks 121 fixedly mounted on one side of the outer wall of the mounting frame 12, a movable plate 122 movably inserted between the inner surfaces of the two limiting blocks 121, a connecting rod 123 movably sleeved on the outer surface of the movable plate 122, a first motor 124 fixedly mounted on one side of the outer wall of the mounting frame 12, an eccentric wheel 125 fixedly sleeved on the output end of the first motor 124, and the outer surface of the eccentric wheel 125 movably connected to the inner surface of the connecting rod 123. Two movable grooves 13 are provided on the inner surface of the two movable grooves 13. A movable frame 131 is movably embedded between the inner surface of the two movable grooves 13. The outer surface of the movable frame 131 is movably connected to the inner surface of the movable plate 122. Two discharge pipes 132 are fixedly connected to the outer surface of the movable frame 131. A screening plate 133 is provided on the inner surface of the movable frame 131. Two fixing springs 134 are provided on the inner surface of the screening plate 133. Two limiting rods 135 are provided on the inner surface of the screening plate 133. One side of the outer wall of the limiting rod 135 is fixedly connected to one side of the outer wall of the fixing spring 134.

[0026] The overall effect of Embodiment 1 is that when coarse and fine screening of silicon micropowder is required, the silicon micropowder is first conveyed into the movable frame 131 by the operator. Then, under the action of the first motor 124, the eccentric wheel 125 is rotated. At the same time, under the action of the connecting rod 123 and the limiting block 121, the movable plate 122 can be driven to reciprocate. Through the reciprocating motion of the movable plate 122, the movable frame 131 can be driven to reciprocate within the movable groove 13. And under the action of the screening plate 133, the silicon micropowder can be initially screened. During the screening process, the coarser silicon micropowder will be... Under the action of the screening plate 133, the material is conveyed out from one of the discharge pipes 132 and enters the external collection box. The finer silicon powder will enter the next mechanism from the other discharge pipe 132 for further processing. After the silicon powder has been screened, the operator presses the limiting rod 135 to make it move towards the center inside the screening plate 133 and compresses the fixing spring 134 so that the limiting rod 135 no longer limits the screening plate 133. The screening plate 133 is then removed from the movable frame 131, making it easier for subsequent cleaning and maintenance, and greatly improving the practicality of the screening device.

[0027] Example 2: As Figures 2-4As shown, the screening mechanism 2 includes a mounting box 21. Two limiting springs 211 are fixedly installed on the bottom of the inner wall of the mounting box 21. A vibrating frame 22 is provided on the inner surface of the mounting box 21. The bottom of the vibrating frame 22 is fixedly connected to the top of the limiting springs 211. A screening plate 221 is provided on the inner surface of the vibrating frame 22. A second motor 23 is fixedly installed on one side of the outer wall of the mounting box 21. A round shaft 24 is movably inserted between the inner surface of the mounting box 21. The inner surface of the round shaft 24 is fixedly connected to the output end of the second motor 23. Two convex wheels 241 are fixedly sleeved on the outer surface of the round shaft 24. A guide plate 25 is fixedly installed on the inner surface of the mounting box 21. Four compression springs 222 are provided on the inner surface of the screening plate 221. Four limiting shafts 223 are provided on the inner surface of the screening plate 221. One side of the outer wall of the limiting shaft 223 is fixedly connected to one side of the outer wall of the compression spring 222. The top of the bottom plate 11 is fixedly connected to the bottom of the mounting box 21.

[0028] The overall effect of Embodiment 2 is that after the silicon powder undergoes preliminary sieving, it enters the vibrating frame 22. Under the action of the second motor 23, the round shaft 24 and the convex wheel 241 rotate. Simultaneously, with the cooperation of the limiting spring 211, the vibrating frame 22 can reciprocate inside the mounting box 21, causing the silicon powder inside the vibrating frame 22 to achieve a rapid vibration effect. Furthermore, under the action of the sieving plate 221, the silicon powder can undergo further sieving. The finer silicon powder will pass through the sieving plate 221 and, under the action of the guide plate 25, be further sieved. Upon entering the prepared collection box, coarser silica powder will remain on the top of the screening plate 221. Then, under the operation of the operator, the limiting shaft 223 is pressed to move it towards the center inside the screening plate 221, and the compression spring 222 is compressed so that the limiting shaft 223 no longer limits the screening plate 221. Then the screening plate 221 is removed from the vibrating frame 22, making it easier for the operator to clean the screening plate 221, greatly improving the efficiency of cleaning and maintenance, and reducing the labor intensity of the operator.

[0029] Working Principle: When coarse and fine screening of silicon micropowder is required, the silicon micropowder is first fed into the movable frame 131 by the operator. Then, under the action of the first motor 124, the eccentric wheel 125 is rotated. Simultaneously, under the action of the connecting rod 123 and the limiting block 121, the movable plate 122 is driven to reciprocate. Through the reciprocating motion of the movable plate 122, the movable frame 131 is driven to reciprocate within the movable trough 13. Under the action of the screening plate 133, the silicon micropowder can be initially screened. During the screening process, the coarser silicon micropowder will be conveyed out from one of the discharge pipes 132 into the external collection box under the action of the screening plate 133. The finer silicon micropowder will enter the vibrating frame 22 from the other discharge pipe 132. Subsequently, under the action of the second motor 23, the round shaft 24 and the convex wheel 241 are rotated. Simultaneously, with the cooperation of the limiting spring 211, the vibrating frame 22 can be moved back and forth. The reciprocating motion inside the mounting box 21 causes the silicon powder inside the vibrating frame 22 to vibrate rapidly. Under the action of the sieving plate 221, the silicon powder can be further sieved. Finer silicon powder passes through the sieving plate 221 and, under the action of the guide plate 25, enters the prepared collection box. Coarser silicon powder remains at the top of the sieving plate 221. After the silicon powder has been sieved, the operator presses the limiting rod 135 and the limiting shaft 223 to keep it in place. The screening plate 133 and the sieve plate 221 move inwards and compress the fixed spring 134 and the compression spring 222, so that the limiting rod 135 and the limiting shaft 223 no longer limit the screening plate 133 and the sieve plate 221, and remove the screening plate 133 and the sieve plate 221 from the movable frame 131 and the vibrating frame 22, making it easier to clean and maintain the screening plate 133 and the sieve plate 221 in the future, and greatly improving the practicality of the screening device.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A device for separating coarse and fine silicon micropowder, characterized in that: Includes a screening mechanism (1), and a sieving mechanism (2) is provided on the top of the screening mechanism (1). The screening mechanism (1) includes a base plate (11), a mounting frame (12) is fixedly installed on the top of the base plate (11), two limiting blocks (121) are fixedly installed on one side of the outer wall of the mounting frame (12), a movable plate (122) is movably inserted between the inner surface walls of the two limiting blocks (121), a connecting rod (123) is movably sleeved on the outer surface wall of the movable plate (122), a first motor (124) is fixedly installed on one side of the outer wall of the mounting frame (12), an eccentric wheel (125) is fixedly sleeved on the output end of the first motor (124), and the outer surface wall of the eccentric wheel (125) is movably connected to the inner surface wall of the connecting rod (123). Two movable slots (13) are opened on the outer surface wall of the mounting frame (12), a movable frame (131) is movably embedded between the inner surface walls of the two movable slots (13), and the outer surface wall of the movable frame (131) is movably connected to the inner surface wall of the movable plate (122).

2. The silicon micropowder coarse and fine screening device according to claim 1, characterized in that: The outer wall of the movable frame (131) is fixedly connected to two discharge pipes (132), and the inner wall of the movable frame (131) is provided with a screening plate (133), and the inner wall of the screening plate (133) is provided with two fixing springs (134).

3. The silicon micropowder coarse and fine sieving device according to claim 2, characterized in that: The inner wall of the screening plate (133) is provided with two limiting rods (135), and one side of the outer wall of the limiting rod (135) is fixedly connected to one side of the outer wall of the fixing spring (134).

4. The silicon micropowder coarse and fine screening device according to claim 3, characterized in that: The screening mechanism (2) includes a mounting box (21), two limiting springs (211) are fixedly installed on the bottom of the inner wall of the mounting box (21), a vibrating frame (22) is provided on the inner surface of the mounting box (21), the bottom of the vibrating frame (22) is fixedly connected to the top of the limiting springs (211), and a screening plate (221) is provided on the inner surface of the vibrating frame (22).

5. The silicon micropowder coarse and fine sieving device according to claim 4, characterized in that: A second motor (23) is fixedly installed on one side of the outer wall of the mounting box (21). A round shaft (24) is movably inserted between the inner surface walls of the mounting box (21), and the inner surface wall of the round shaft (24) is fixedly connected to the output end of the second motor (23). Two convex wheels (241) are fixedly sleeved on the outer surface wall of the round shaft (24).

6. The silicon micropowder coarse and fine sieving device according to claim 5, characterized in that: The inner wall of the mounting box (21) is fixedly installed with a guide plate (25), and the inner wall of the screening plate (221) is provided with four compression springs (222). The inner wall of the screening plate (221) is provided with four limiting shafts (223), and one side of the outer wall of the limiting shaft (223) is fixedly connected to one side of the outer wall of the compression spring (222).

7. The silicon micropowder coarse and fine sieving device according to claim 6, characterized in that: The top of the base plate (11) is fixedly connected to the bottom of the mounting box (21).

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