Micro-nano copper powder grading device and using method thereof

Abstract

The micro-nano copper powder grading device comprises a base, a first motor is installed on the outer surface of the base, symmetrical first bearings are embedded in the inner side wall of the base, and inner rings of the two first bearings are both connected with rotating rods; and the output end of the first motor is connected with the right end of one rotating rod through a first bearing. A first motor drives an eccentric wheel to rotate, a movable plate drives an ejector rod to impact a stress cylinder in a reciprocating mode through a positioning base, a grading box generates high-frequency reciprocating vibration, and a second spring buffering system is matched, so that multi-dimensional micro-amplitude vibration of the grading box is achieved, copper powder particles are effectively dispersed, and the agglomeration phenomenon is avoided; wherein one scraper blade scrapes copper powder accumulated on the grading net in real time, and the other scraper blade disturbs deposited materials at the bottom of the box body, so that the screen is effectively prevented from being blocked, fine particles are accelerated to penetrate through the grading net, and the shutdown cleaning frequency is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of copper powder production, and specifically to a micro-nano copper powder classification device and its use method. Background Technique

[0002] Micro-nano copper powder refers to copper powder with particle sizes in the nanoscale (1 - 100 nanometers) and micron scale (0.1 - 1000 microns). They not only have the good electrical conductivity, thermal conductivity, corrosion resistance, antibacterial property, and non-magnetic property of copper metal, but also have the characteristics of low melting point and high activity. Micro-nano copper powder has a wide range of applications in multiple fields, including superhard materials, multilayer ceramic capacitors, conductive adhesives, integrated circuit printing plates, shielding materials, lubricants, catalysts, and medical materials, etc.

[0003] Existing micro-nano copper powder classification devices mostly rely on a single vibration source or fixed-frequency excitation, making it difficult to achieve uniform dispersion of copper powder on the surface of the classification screen, easily leading to particle agglomeration, affecting the classification accuracy, and during the classification process, copper powder is prone to accumulate and form blockages on the sieve mesh, requiring frequent shutdown for maintenance. Therefore, we provide a micro-nano copper powder classification device. Summary of the Invention

[0004] The purpose of the present invention is to provide a micro-nano copper powder classification device and its use method to solve the problems raised in the background technique above and overcome the existing technical defects.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: A micro-nano copper powder classification device includes a base. A first motor is installed on the outer surface of the base. Symmetric first bearings are inlaid on the inner side wall of the base. The inner rings of both first bearings are connected to a rotating rod. The output end of the first motor is connected to the right end of one of the rotating rods through the first bearing. The mutually close ends of the two rotating rods are jointly connected to an eccentric wheel. An activity plate is articulated inside the eccentric wheel through a pin shaft. Above the base is provided a classification box. The bottom surface of the classification box is connected to a force-bearing cylinder. A top rod is slidably connected inside the force-bearing cylinder. The bottom end of the top rod is connected to a positioning seat. The inside of the positioning seat is articulated with the inside of the activity plate through a pin shaft. A classification screen is provided inside the classification box. A second motor is installed on the upper surface of the classification box. Symmetric second bearings are inlaid on the inner wall of the classification box. The inner rings of both second bearings are jointly connected to a rotating shaft. The output end of the second motor is connected to the top end of the rotating shaft through the second bearing. Symmetric scraping plates are connected to the outer surface of the rotating shaft. The bottom surface of one of the scraping plates is in contact with the upper surface of the classification screen, and the bottom surface of the other scraping plate is in contact with the inner bottom wall of the classification box.

[0006] A micro-nano copper powder classification device and its use method include

[0007] Step S1: After the copper powder enters the classification box, drive the rotating rod to rotate;

[0008] Step S2: The rotating rod drives the eccentric wheel, and the eccentric wheel drives the positioning seat to reciprocate linearly through the movable plate, so that the ejector rod reciprocally impacts the force receiving cylinder;

[0009] Step S3: The impact vibration motion is converted into the vibration of the classification box through the second spring and the buffer plate, so that the coarse copper powder remains on the classification mesh, while the fine copper powder falls to the bottom of the classification box;

[0010] Step S4: The rotating shaft rotates to drive two scraping plates to respectively scrape the copper powder adhered to the classification mesh or disturb the copper powder deposited at the bottom of the classification box to prevent blockage.

[0011] As a further solution of the present invention: A first discharge hopper is communicated with the outer surface of the classification box, a second discharge hopper is communicated with the outer surface of the classification box, and valves are installed on the upper surfaces of both the first discharge hopper and the second discharge hopper.

[0012] As a further solution of the present invention: Symmetric first springs are connected to the upper surface of the base, and the tops of both first springs are connected to the bottom surface of the classification box.

[0013] As a further solution of the present invention: A second spring is connected to the inner top wall of the force receiving cylinder, the bottom end of the second spring is connected to a buffer plate, and the bottom surface of the buffer plate is in contact with the top end of the ejector rod.

[0014] As a further solution of the present invention: Symmetric limiting grooves are formed on the outer surface of the force receiving cylinder, a limiting block is slidably connected to the interior of both limiting grooves, and the mutually approaching side surfaces of both limiting blocks are connected to the outer surface of the ejector rod.

[0015] As a further solution of the present invention: A feed hopper is communicated with the upper surface of the classification box, and a cover plate is hinged to the upper surface of the feed hopper through a hinge.

[0016] As a further solution of the present invention: Symmetric limiting frames are connected to the upper surface of the base, sliders are slidably connected to the outer surfaces of both limiting frames, and the mutually approaching side surfaces of both sliders are connected to the outer surface of the classification box.

[0017] As a further solution of the present invention: An activity opening is formed on the upper surface of the base, and the movable plate penetrates through the activity opening and extends to the upper part of the base.

[0018] As a further solution of the present invention: Each electrical appliance is electrically connected to an external power supply.

[0019] Compared with the prior art, the beneficial effects of the present invention include:

[0020] The first motor drives the rotating rod to drive the eccentric wheel to rotate, causing the movable plate to drive the ejector rod to reciprocally impact the force receiving cylinder through the positioning seat, enabling the classification box to generate high-frequency reciprocating vibrations. Cooperating with the second spring buffer system, multi-dimensional micro-amplitude vibrations of the classification box are achieved, effectively dispersing copper powder particles, avoiding agglomeration phenomena, making the particles evenly distributed on the classification screen, significantly improving the classification accuracy. The second motor drives the symmetrically arranged scrapers to rotate synchronously. One scraper scrapes the copper powder accumulated on the classification screen in real time, and the other scraper disturbs the sedimented materials at the bottom of the box body, effectively preventing the screen from being blocked, accelerating the penetration of fine particles through the classification screen, and reducing the frequency of shutdown for cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The disclosure of the present invention will be described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the drawings, the same reference numerals are used to refer to the same components. Among them:

[0022] Figure 1 Schematically shows a front view structural diagram proposed according to an embodiment of the present invention;

[0023] Figure 2 Schematically shows a front sectional structural diagram of the base proposed according to an embodiment of the present invention;

[0024] Figure 3 Schematically shows a front sectional structural diagram of the force receiving cylinder proposed according to an embodiment of the present invention;

[0025] Figure 4 Schematically shows a front sectional structural diagram of the classification box proposed according to an embodiment of the present invention;

[0026] Figure 5 Schematically shows a top view structural diagram proposed according to an embodiment of the present invention;

[0027] Reference numerals in the figures: 1, base; 2, movable opening; 3, first motor; 4, classification box; 5, first discharge hopper; 6, second discharge hopper; 7, valve; 8, first bearing; 9, rotating rod; 10, eccentric wheel; 11, movable plate; 12, positioning seat; 13, ejector rod; 14, force receiving cylinder; 15, first spring; 16, second spring; 17, buffer plate; 18, limiting groove; 19, limiting block; 20, second motor; 21, second bearing; 22, scraper; 23, classification screen; 24, rotating shaft; 25, feed hopper; 26, cover plate; 27, limiting frame; 28, slider. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, those of ordinary skill in the art can propose various mutually replaceable structural ways and implementation ways. Therefore, the following specific embodiments and the accompanying drawings are only exemplary illustrations of the technical solution of the present invention, and should not be regarded as the whole of the present invention or as a limitation or restriction on the technical solution of the present invention.

[0029] According to an embodiment of the present invention in combination with the attached Figures 1 - 5 shown.

[0030] A micro-nano copper powder classification device includes a base 1. A first motor 3 is installed on the outer surface of the base 1. Symmetric first bearings 8 are embedded in the inner side wall of the base 1. The inner rings of the two first bearings 8 are both connected to a rotating rod 9. The output end of the first motor 3 is connected to the right end of one of the rotating rods 9 through the first bearing 8. The mutually approaching ends of the two rotating rods 9 are jointly connected to an eccentric wheel 10. An inner portion of the eccentric wheel 10 is hinged to a movable plate 11 through a pin shaft. Above the base 1, there is a classification box 4. A force-receiving cylinder 14 is connected to the bottom surface of the classification box 4. A top rod 13 is slidably connected inside the force-receiving cylinder 14. The bottom end of the top rod 13 is connected to a positioning seat 12. The inner portion of the positioning seat 12 is hinged to the inner portion of the movable plate 11 through a pin shaft. A classification screen 23 is provided inside the classification box 4. A second motor 20 is installed on the upper surface of the classification box 4. Symmetric second bearings 21 are embedded in the inner wall of the classification box 4. The inner rings of the two second bearings 21 are jointly connected to a rotating shaft 24. The output end of the second motor 20 is connected to the top end of the rotating shaft 24 through the second bearing 21. Each of the electrical appliances is electrically connected to an external power supply. Opposite scraping plates 22 are connected to the outer surface of the rotating shaft 24. The bottom surface of one of the scraping plates 22 is in contact with the upper surface of the classification screen 23, and the bottom surface of the other scraping plate 22 is in contact with the inner bottom wall of the classification box 4. By driving the eccentric wheel 10 to rotate through the first motor 3, the movable plate 11 can drive the top rod 13 to impact the force-receiving cylinder 14 through the positioning seat 12, realizing high-frequency reciprocating vibration of the classification box 4. By driving the rotating shaft 24 to rotate through the second motor 20, the two scraping plates 22 can respectively scrape the copper powder accumulated on the classification screen 23 and disturb the deposited materials at the bottom of the classification box 4, effectively preventing the classification screen 23 from being blocked. The classification screen 23 can effectively filter copper powders of different thicknesses.

[0031] A micro-nano copper powder classification device and its using method, including

[0032] Step S1: After the copper powder enters the classification box 4, drive the rotating rod 9 to rotate;

[0033] Step S2: The rotating rod 9 drives the eccentric wheel 10, and the eccentric wheel 10 drives the positioning seat 12 to perform reciprocating linear motion through the movable plate 11, so that the top rod 13 reciprocally impacts the force-receiving cylinder 14;

[0034] Step S3: The movement of the impact vibration is converted into the vibration of the classification box 4 through the second spring 16 and the buffer plate 17, so that the coarse copper powder remains on the classification screen 23, while the fine copper powder falls to the bottom of the classification box 4;

[0035] Step S4: The rotation of the rotating shaft 24 drives the two scraping plates 22 to scrape the copper powder adhered to the classification screen 23 respectively, or disturb the copper powder deposited at the bottom of the classification box 4 to prevent blockage.

[0036] In this embodiment, a first discharge hopper 5 is communicated with the outer surface of the classification box 4, a second discharge hopper 6 is communicated with the outer surface of the classification box 4, valves 7 are installed on the upper surfaces of both the first discharge hopper 5 and the second discharge hopper 6. By adjusting the valves 7, it is convenient to discharge the classified copper powder from the inside of the classification box 4 through the discharge hoppers.

[0037] In this embodiment, symmetric first springs 15 are connected to the upper surface of the base 1, and the tops of the two first springs 15 are connected to the bottom surface of the classification box 4. Symmetric limiting grooves 18 are formed on the outer surface of the force receiving cylinder 14, and a limiting block 19 is slidably connected to the inside of the two limiting grooves 18 together. The surfaces of the two limiting blocks 19 close to each other are connected to the outer surface of the ejector rod 13. Through the flexible connection of the first spring 15 and the classification box 4, and the guiding action of the limiting groove 18 and the limiting block 19, multi-dimensional micro-vibration of the classification box 4 is realized to avoid rigid impact.

[0038] In this embodiment, a second spring 16 is connected to the inner top wall of the force receiving cylinder 14, the bottom end of the second spring 16 is connected to a buffer plate 17, and the bottom surface of the buffer plate 17 is in contact with the top end of the ejector rod 13. Through the cooperation of the second spring 16 and the buffer plate 17, the impact force of the ejector rod 13 can be absorbed and converted into the vibration energy of the classification box 4.

[0039] In this embodiment, a feed hopper 25 is communicated with the upper surface of the classification box 4, a cover plate 26 is hinged to the upper surface of the feed hopper 25 through a hinge. The copper powder is added to the classification box 4 through the feed hopper 25, and the cover plate 26 can be opened and closed through the hinge to prevent dust from overflowing.

[0040] In this embodiment, symmetric limiting frames 27 are connected to the upper surface of the base 1, sliders 28 are slidably connected to the outer surfaces of the two limiting frames 27, and the surfaces of the two sliders 28 close to each other are connected to the outer surface of the classification box 4. Through the cooperation of the limiting frame 27 and the slider 28, the classification box 4 can be limited.

[0041] In this embodiment, a movable opening 2 is formed on the upper surface of the base 1, and the movable plate 11 passes through the movable opening 2 and extends to the upper part of the base 1. By providing the movable opening 2, it is convenient for the movable plate 11 to move.

[0042] Working principle: During use, first pour the copper powder into the classification box 4 through the feed hopper 25. Subsequently, start the first motor 3. The first motor 3 drives the rotating rod 9 to rotate through the first bearing 8. The rotating rod 9 drives the eccentric wheel 10 to rotate. The eccentric wheel 10 drives the positioning seat 12 to perform reciprocating linear motion through the movable plate 11, causing the ejector rod 13 to repeatedly impact the force receiving cylinder 14. At the same time, the second spring 16 and the buffer plate 17 absorb the impact and convert it into the vibration energy of the classification box 4, thereby causing the classification box 4 to vibrate, leaving the coarse copper powder on the classification screen 23, and the fine copper powder falling to the bottom of the classification box 4. Then, the second motor 20 drives the rotating shaft 24 to rotate through the second bearing 21, causing the two scraping plates 22 to scrape the copper powder on the classification screen 23 respectively, and the other disturbing the deposited copper powder at the bottom of the classification box 4 to prevent the screen from being blocked.

[0043] The technical scope of the present invention is not limited to the content described above. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. A micro-nano copper powder classification device, characterized in that, It includes a base (1), on the outer surface of the base (1), a first motor (3) is installed. On the inner side wall of the base (1), symmetrically embedded are first bearings (8). The inner rings of the two first bearings (8) are both connected to a rotating rod (9). The output end of the first motor (3) is connected to the right end of one of the rotating rods (9) through the first bearing (8). The mutually approaching ends of the two rotating rods (9) are jointly connected to an eccentric wheel (10). Inside the eccentric wheel (10), a movable plate (11) is hinged through a pin shaft. Above the base (1), there is a grading box (4). The bottom surface of the grading box (4) is connected to a force-bearing cylinder (14). Inside the force-bearing cylinder (14), a top rod (13) is slidably connected. The bottom end of the top rod (13) is connected to a positioning seat (12). Inside the positioning seat (12), it is hinged to the inside of the movable plate (11) through a pin shaft. Inside the grading box (4), there is a grading mesh (23). On the upper surface of the grading box (4), a second motor (20) is installed. On the inner wall of the grading box (4), symmetrically embedded are second bearings (21). The inner rings of the two second bearings (21) are jointly connected to a rotating shaft (24). The output end of the second motor (20) is connected to the top end of the rotating shaft (24) through the second bearing (21). On the outer surface of the rotating shaft (24), symmetrically connected are scraping plates (22). The bottom surface of one of the scraping plates (22) is in contact with the upper surface of the grading mesh (23), and the bottom surface of the other scraping plate (22) is in contact with the inner bottom wall of the grading box (4).

2. The micronano copper powder classification device according to claim 1, characterized in that, On the outer surface of the grading box (4), a first discharge hopper (5) is communicated. On the outer surface of the grading box (4), a second discharge hopper (6) is communicated. On the upper surfaces of both the first discharge hopper (5) and the second discharge hopper (6), valves (7) are installed.

3. The micronano copper powder classification device according to claim 2, characterized in that, On the upper surface of the base (1), symmetrically connected are first springs (15). The top ends of the two first springs (15) are both connected to the bottom surface of the grading box (4).

4. A micro-nano copper powder classification device according to claim 3, characterized in that, On the inner top wall of the force-bearing cylinder (14), a second spring (16) is connected. The bottom end of the second spring (16) is connected to a buffer plate (17). The bottom surface of the buffer plate (17) is in contact with the top end of the top rod (13).

5. A micro-nano copper powder classification device according to claim 4, characterized in that, On the outer surface of the force-bearing cylinder (14), symmetrically opened are limiting grooves (18). Inside the two limiting grooves (18), a limiting block (19) is jointly slidably connected. The mutually approaching side surfaces of the two limiting blocks (19) are both connected to the outer surface of the top rod (13).

6. The micronano copper powder classification device according to claim 5, characterized in that, On the upper surface of the grading box (4), a feed hopper (25) is communicated. On the upper surface of the feed hopper (25), a cover plate (26) is hinged through a hinge.

7. A micro-nano copper powder classification device according to claim 6, characterized in that, On the upper surface of the base (1), symmetrically connected are limiting frames (27). On the outer surfaces of the two limiting frames (27), sliders (28) are slidably connected. The mutually approaching side surfaces of the two sliders (28) are both connected to the outer surface of the grading box (4).

8. A micro-nano copper powder classification device according to claim 7, characterized in that, The upper surface of the base (1) is provided with a movable opening (2), and the movable plate (11) penetrates through the movable opening (2) and extends to the upper part of the base (1).

9. The micronano copper powder classification device according to claim 8, characterized in that, Each of the electrical appliances is electrically connected to an external power supply.

10. A micro-nano copper powder classification device and its usage method according to claim 9, characterized in that, including Step S1: After the copper powder enters the classification box (4), drive the rotating rod (9) to rotate; Step S2: The rotating rod (9) drives the eccentric wheel (10), and the eccentric wheel (10) drives the positioning seat (12) to reciprocate linearly through the movable plate (11), so that the ejector rod (13) reciprocally impacts the force receiving cylinder (14); Step S3: The impact vibration is converted into the vibration of the classification box (4) through the second spring (16) and the buffer plate (17), so that the coarse copper powder remains on the classification screen (23), while the fine copper powder falls to the bottom of the classification box (4); Step S4: The rotating shaft (24) rotates to drive the two scraping plates (22) to scrape the copper powder adhered to the classification screen (23) respectively, or disturb the copper powder deposited at the bottom of the classification box (4) to prevent blockage.

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