Sieving device for preparing high-tap-density silver powder

Abstract

The utility model discloses a sieving device for preparing silver powder with high tap density, and relates to the technical field of silver powder preparation. The vibrating and compacting device comprises a fixing frame and a discharging hopper, a vibrating and compacting mechanism and a driving mechanism are arranged on the fixing frame, and the vibrating and compacting mechanism comprises a screen assembly and a fixing assembly; the screen assembly comprises a plurality of connecting blocks fixedly connected to the outer wall of the discharging hopper, springs are fixedly connected to the bottom faces of the connecting blocks, the bottom ends of the springs are fixedly connected with the top face of a fixing frame, and a plurality of fixing blocks are fixedly connected to the inner wall of the discharging hopper. The top faces of the fixing blocks are fixedly connected with connecting rods, the connecting rods are slidably sleeved with a screen plate, and a plurality of grinding balls are placed on the top face of the screen plate. The vibrating compaction mechanism is arranged, the sieve plate can be replaced according to silver powder with different fineness requirements, and accurate control over the silver powder with different finenesses is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of silver powder preparation, in particular to a screening device for preparing high-tap density silver powder. Background Art

[0002] Silver powder is widely used in various fields, such as: Electronics Industry: as a conductive material, used in electronic components, printed circuit boards, electrodes, etc.; Conductive coatings: used in anti-static coatings, conductive inks, conductive pastes, etc., used in electronic equipment, automobiles, aerospace and other fields; Chemical catalysts: Silver powder is used as a catalyst in chemical reactions, organic synthesis, catalytic combustion and other fields; Others: Silver powder is also used in silver paste, silver solder, silver plating, decorative materials, battery materials and other aspects.

[0003] However, in the process of preparing silver powder, most silver powder preparation devices have certain limitations in controlling the particle size and morphology of silver powder. For example, traditional methods such as mechanical grinding and chemical reduction often find it difficult to achieve precise control of the silver powder particle size and easily lead to silver powder agglomeration, thereby affecting the performance of the silver powder. Utility Model Content

[0004] The purpose of the utility model is to provide a screening device for preparing silver powder with high tap density. By providing a tapping mechanism, the sieve plate can be replaced according to the silver powder with different fineness requirements, so that the ground silver powder can be effectively classified according to different particle sizes, and precise control of silver powder with different finenesses can be achieved. This solves the problem that most silver powder preparation devices have certain limitations in controlling the particle size and morphology of silver powder. For example, traditional methods such as mechanical grinding and chemical reduction methods often find it difficult to achieve precise control of the silver powder particle size.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The utility model is a screening device for preparing high-tap density silver powder, comprising a fixed frame and a lower hopper, wherein a vibration mechanism and a driving mechanism are provided on the fixed frame, and the vibration mechanism comprises a screen assembly and a fixed assembly;

[0007] The screen assembly includes several connecting blocks fixedly connected to the outer wall of the lower hopper, the bottom surfaces of several of the connecting blocks are fixedly connected to springs, the bottom ends of several of the springs are fixedly connected to the top surface of the fixed frame, the inner wall of the lower hopper is fixedly connected to several fixed blocks, the top surfaces of several of the fixed blocks are fixedly connected to connecting rods, screen plates are slidingly sleeved on several of the connecting rods, and several grinding balls are placed on the top surface of the screen plates.

[0008] Furthermore, a screen is provided on the top surface of the lower hopper, two bolts are threadedly connected between the screen and the lower hopper, and the top end of the connecting rod is in contact with the bottom surface of the screen.

[0009] Furthermore, the driving mechanism includes a support assembly, a vibration assembly and a transmission assembly. The support assembly includes a discharge pipe connected to the bottom surface of the lower hopper. The outer wall of the lower hopper is fixedly connected to a support plate. The bottom surface of the support plate is fixedly connected to a support frame. The support frame is fixedly connected to a motor.

[0010] Furthermore, the vibration component includes a rotating rod 1 fixedly connected to the output end of the motor, the rotating rod 1 rotates and passes through the support plate, and a stopper is fixedly connected to the top end of the rotating rod 1, and the stopper is in contact with the fixing frame.

[0011] Furthermore, the transmission assembly includes a gear 1 fixedly connected to the outer wall of a rotating rod 1, and the top surface of the support plate is rotatably connected to a rotating rod 2.

[0012] Furthermore, the outer wall of the second rotating rod is fixedly connected with a second gear, and the first gear is meshed with the second gear.

[0013] Furthermore, the top end of the second rotating rod rotates and extends to the interior of the lower hopper, and the top end of the second rotating rod is fixedly connected with a rotating blade.

[0014] The utility model has the following beneficial effects:

[0015] 1. By providing a vibrating mechanism, the sieve plate can be placed on the top surface of the fixed block after passing through multiple connecting rods, and multiple grinding balls can be placed on the top surface of the sieve plate. After the screen is fixed above the lower hopper by two bolts, the multiple grinding balls can roll between the screen and the sieve plate. The device can replace the sieve plate according to the silver powder with different fineness requirements, so that it can effectively classify the ground silver powder according to different particle sizes, realize precise control of silver powder with different finenesses, and meet the needs of different application scenarios.

[0016] 2. By setting up a driving mechanism, the motor on the support frame can be driven to drive the rotating rod to rotate, so that the block intermittently hits the fixed frame. After the block contacts the fixed frame, the lower hopper moves away from the fixed frame. With the help of multiple springs, the lower hopper is reset after the block moves away from the fixed frame, thereby causing the lower hopper to vibrate. When the lower hopper vibrates, the grinding balls will keep jumping and contact the top surface of the screen plate and the bottom surface of the screen respectively. Multiple grinding balls cooperate with each other to grind the material above the screen plate. As the grinding process continues, the material particles continue to become smaller, and eventually pass through the pores of the screen plate to form fine powder, meeting the needs of subsequent processes.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the overall explosion structure of the utility model;

[0022] Figure 4 for Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0023] Figure 5 for Figure 3 Schematic diagram of the enlarged structure at point B in the middle.

[0024] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0025] 1. Fixed frame; 2. Vibrating mechanism; 3. Driving mechanism; 21. Lower hopper; 22. Connecting block; 23. Spring; 24. Fixed block; 25. Connecting rod; 26. Screen plate; 27. Grinding balls; 28. Screen; 29. ​​Bolt; 31. Discharge pipe; 32. Support plate; 33. Support frame; 34. Motor; 35. Rotating rod 1; 36. Stop block; 37. Gear 1; 38. Rotating rod 2; 39. Gear 2; 391. Rotating blade. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1-5As shown, the utility model is a screening device for preparing high tap density silver powder, comprising a fixed frame 1 and a lower hopper 21, the fixed frame 1 is provided with a vibrating mechanism 2 and a driving mechanism 3, the vibrating mechanism 2 includes a screen assembly and a fixed assembly;

[0028] The screen assembly includes a plurality of connecting blocks 22 fixedly connected to the outer wall of the lower hopper 21, the bottom surfaces of the plurality of connecting blocks 22 are fixedly connected to springs 23, the bottom ends of the plurality of springs 23 are fixedly connected to the top surface of the fixed frame 1, the inner wall of the lower hopper 21 is fixedly connected to a plurality of fixing blocks 24, the top surfaces of the plurality of fixing blocks 24 are fixedly connected to connecting rods 25, the sliding sleeves on the plurality of connecting rods 25 are provided with sieve plates 26, the top surface of the sieve plates 26 are provided with a plurality of grinding balls 27, the top surface of the lower hopper 21 is provided with a sieve 28, the sieve 28 and the lower hopper 21 are fixedly connected to the upper surface of the fixed frame 1, and the bottom surfaces of the fixed ... the upper surface of the fixed frame 1, and the bottom surfaces of the fixed blocks 24 are fixedly connected to the upper surface of the fixed frame 1 There are two bolts 29 threadedly connected between them, and the top of the connecting rod 25 contacts the bottom surface of the screen 28. By providing a vibration mechanism 2, after the screen 28 is fixed above the lower hopper 21 by two bolts 29, multiple grinding balls 27 can roll between the screen 28 and the screen plate 26. The device can replace the screen plate 26 according to the silver powder with different fineness requirements, so that it can effectively classify the ground silver powder according to different particle sizes, realize precise control of silver powder of different finenesses, and meet the needs of different application scenarios.

[0029] The driving mechanism 3 includes a supporting assembly, a vibrating assembly and a transmission assembly. The supporting assembly includes a discharge pipe 31 connected to the bottom surface of the lower hopper 21. The outer wall of the lower hopper 21 is fixedly connected to a supporting plate 32. The bottom surface of the supporting plate 32 is fixedly connected to a supporting frame 33. The supporting frame 33 is fixedly connected to a motor 34. The vibration assembly includes a rotating rod 35 fixedly connected to the output end of the motor 34. The rotating rod 35 rotates and passes through the supporting plate 32. The top of the rotating rod 35 is fixedly connected to a stopper 36. The stopper 36 is fixed to the fixed The fixed frame 1 is in contact with each other, and the transmission assembly includes a gear 1 37 fixedly connected to the outer wall of the rotating rod 1 35. The top surface of the support plate 32 is rotatably connected to the rotating rod 2 38. The outer wall of the rotating rod 2 38 is fixedly connected to the gear 2 39. The gear 1 37 is meshed with the gear 2 39. The top of the rotating rod 2 38 rotates and extends to the inside of the lower hopper 21. The top of the rotating rod 2 38 is fixedly connected to the rotating blade 391. By providing a driving mechanism 3, the motor 34 on the support frame 33 can be driven to drive the rotating rod 1 35 to rotate, so that the block 3 6 intermittently hits the fixed frame 1, and after the stopper 36 contacts the fixed frame 1, the lower hopper 21 moves away from the fixed frame 1. Cooperating with multiple springs 23, after the stopper 36 moves away from the fixed frame 1, the lower hopper 21 is reset, thereby causing the lower hopper 21 to vibrate. When the lower hopper 21 vibrates, the grinding balls 27 will jump continuously and contact the top surface of the screen plate 26 and the bottom surface of the screen 28 respectively. The multiple grinding balls 27 cooperate with each other to grind the material above the screen plate 26. As the grinding process continues, the material particles continue to become smaller. The particles are small and eventually pass through the pores of the sieve plate 26 to form fine powder, meeting the needs of subsequent processes. During the grinding and discharging process, the gear 1 37 and the rotating rod 2 38 cooperate with each other to make the rotating rod 1 35 and the rotating rod 2 38 rotate relative to each other, so that the rotating blades 391 inside the hopper 21 can sieve and break the agglomerated materials, so that the ground materials can smoothly pass through the discharge pipe 31 and fall out of the material, which greatly improves the material processing efficiency and avoids the production stagnation caused by blockage during the discharging process.

[0030] A specific application of this embodiment is as follows: by providing the vibrating mechanism 2, when the device needs to be assembled, the sieve plate 26 can be placed on the top surface of the fixed block 24 after passing through multiple connecting rods 25, and multiple grinding balls 27 can be placed on the top surface of the sieve plate 26. After the screen 28 is fixed above the lower hopper 21 by two bolts 29, the multiple grinding balls 27 can roll between the screen 28 and the sieve plate 26. The device can replace the sieve plate 26 according to the silver powder with different fineness requirements, so that the ground silver powder can be effectively classified according to different particle sizes, achieving precise control of silver powder with different finenesses, and meeting the needs of different application scenarios.

[0031] By providing a driving mechanism 3, after the material is put into the screen 28, the material first passes through the screen 28 for filtering, and the large particles of impurities in the material are separated. At this time, the motor 34 on the support frame 33 can be driven to drive the rotating rod 35 to rotate, so that the stopper 36 intermittently hits the fixed frame 1, and after the stopper 36 contacts the fixed frame 1, the lower hopper 21 moves away from the fixed frame 1, and cooperates with multiple springs 23. After the stopper 36 moves away from the fixed frame 1, the lower hopper 21 is reset, so that the lower hopper 21 vibrates. When the lower hopper 21 vibrates, the grinding balls 27 will jump continuously and contact the top surface of the screen plate 26 and the bottom surface of the screen 28 respectively. The multiple grinding balls 27 cooperate with each other to grind the material above the screen plate 26. Finally, the particle size of the ground material reaches a predetermined fineness, which can The particles can pass through the pores of the sieve plate 26 smoothly. The pore size of the sieve plate 26 determines the particle size distribution of the final product. The screen arranged thereon can effectively block particles larger than the pore size and only allow small particles that meet the requirements to pass through, thereby realizing accurate screening of material particles, ensuring the stability and uniformity of product quality, forming fine powder, and meeting the needs of subsequent processes. In the process of grinding and discharging, the gear 1 37 and the rotating rod 2 38 cooperate with each other to make the rotating rod 1 35 and the rotating rod 2 38 rotate relative to each other, so that the rotating blades 391 inside the hopper 21 will sieve and break the agglomerated material, so that the ground material can smoothly pass through the discharge pipe 31 and fall out, greatly improving the material processing efficiency, and also avoiding production stagnation caused by blockage of the material during the discharge process.

[0032] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0033] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A screening device for preparing high tap density silver powder, comprising a fixed frame (1) and a lower hopper (21), characterized in that: The fixing frame (1) is provided with a vibration mechanism (2) and a driving mechanism (3), and the vibration mechanism (2) includes a screen assembly and a fixing assembly; The screen assembly includes a plurality of connecting blocks (22) fixedly connected to the outer wall of the lower hopper (21), the bottom surfaces of the plurality of connecting blocks (22) are fixedly connected to springs (23), the bottom ends of the plurality of springs (23) are fixedly connected to the top surface of the fixed frame (1), the inner wall of the lower hopper (21) is fixedly connected to a plurality of fixing blocks (24), the top surfaces of the plurality of fixing blocks (24) are fixedly connected to connecting rods (25), a sieve plate (26) is slidably sleeved on the plurality of connecting rods (25), and a plurality of grinding balls (27) are placed on the top surface of the sieve plate (26).

2. The sieving device for preparing high tap density silver powder according to claim 1, characterized in that: A screen (28) is provided on the top surface of the lower hopper (21), two bolts (29) are threadedly connected between the screen (28) and the lower hopper (21), and the top end of the connecting rod (25) is in contact with the bottom surface of the screen (28).

3. The sieving device for preparing high tap density silver powder according to claim 2, characterized in that: The driving mechanism (3) comprises a supporting assembly, a vibrating assembly and a transmission assembly. The supporting assembly comprises a discharge pipe (31) arranged in communication with the bottom surface of the lower hopper (21). The outer wall of the lower hopper (21) is fixedly connected to a supporting plate (32). The bottom surface of the supporting plate (32) is fixedly connected to a supporting frame (33). The supporting frame (33) is fixedly connected to a motor (34).

4. The sieving device for preparing high tap density silver powder according to claim 3, characterized in that: The vibration assembly includes a rotating rod (35) fixedly connected to the output end of the motor (34), the rotating rod (35) rotating through the support plate (32), and a stopper (36) fixedly connected to the top end of the rotating rod (35), and the stopper (36) contacts the fixed frame (1).

5. The sieving device for preparing high tap density silver powder according to claim 4, characterized in that: The transmission assembly includes a gear 1 (37) fixedly connected to the outer wall of the rotating rod 1 (35), and the top surface of the support plate (32) is rotatably connected to the rotating rod 2 (38).

6. The sieving device for preparing high tap density silver powder according to claim 5, characterized in that: The outer wall of the rotating rod 2 (38) is fixedly connected to the gear 2 (39), and the gear 1 (37) is meshed with the gear 2 (39).

7. The sieving device for preparing high tap density silver powder according to claim 6, characterized in that: The top end of the second rotating rod (38) rotates and extends to the interior of the lower hopper (21), and the top end of the second rotating rod (38) is fixedly connected to a rotating blade (391).

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