Superfine high-purity aluminum powder four-stage precision grading system

Abstract

The utility model relates to a four-stage precision grading system for superfine high-purity aluminum powder, which comprises a vertical grading box body, and first, second, third and fourth-stage separation cavities, and is technically characterized in that the bottoms of the first, second, third and fourth-stage separation cavities are respectively provided with a conical sieve plate, the top of the vertical grading box body is provided with a stirring motor, and the first, second and third-stage separation cavities are internally provided with an integrated stirring shaft; screen holes of conical hopper-shaped screen plates of the first-stage separation cavity, the second-stage separation cavity and the third-stage separation cavity are sequentially reduced, a plurality of hollow stand columns are evenly arranged in the fourth-stage separation cavity, through hole sets are formed in the outer walls of the hollow stand columns, and fine net layers are arranged on the inner surfaces of the hollow stand columns. Discharging openings communicating with the lower ends of the hollow stand columns are formed in the bottom face of the vertical classification box body, collecting hoppers communicating with the discharging openings are arranged at the bottom of the vertical classification box body, and outlets used for being connected with a suction unit are formed in the lower ends of the collecting hoppers. The system solves the problem that scattering blind areas exist in aluminum powder, and the screening effect and the screening efficiency are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the technical field of aluminum powder production equipment, specifically to a four-stage precision grading system for ultrafine high-purity aluminum powder. Background Technology

[0002] Currently, aluminum powder needs to be graded after production to separate aluminum powder of different particle sizes for different applications.

[0003] CN 211515167 U discloses an aluminum powder grading and screening device, which includes a base, an organic body fixedly connected to the upper surface of the base, a second servo motor and a first servo motor fixedly connected to the left and right sides of the upper end of the organic body, and a first pulley fixedly connected to the output end of the first servo motor. The equipment uses a hopper to feed aluminum powder into the machine. The first and second servo motors start, driving the first and third pulleys to rotate. These pulleys, in turn, rotate the stirring shaft connected to the second and fourth pulleys. The aluminum powder is dispersed by the stirring rods on the shaft and falls onto the first screen plate. At this point, the screen holes on the second screen plate are offset from those on the first screen plate. The first cylinder starts, moving the second connecting rod, which in turn moves the second screen plate. The screen holes on the first and second screen plates then overlap, sieving the aluminum powder. Smaller particles fall onto the third screen plate, and so on down to the fifth screen plate. The vibration motor starts, causing the fifth screen plate to vibrate, sieving the smallest particles onto the conveyor belt, which then discharges them through the first outlet. After sieving, the exhaust fan starts, causing the aluminum powder on the first, third, and fifth screen plates to enter the first, second, and third discharge pipes for final discharge. The equipment has achieved aluminum powder sorting to a certain extent, but the following problems still exist: the stirring shaft is a horizontal shaft, and the stirring rod above it disperses the aluminum powder as it rotates with the horizontal shaft, so that the aluminum powder falls through the sieve holes on the horizontal sieve plate. However, there is a blind zone for dispersing the aluminum powder above the horizontal sieve plate, which is not conducive to the thorough screening of aluminum powder. Utility Model Content

[0004] The purpose of this invention is to provide a four-stage precision grading system for ultrafine high-purity aluminum powder that is structurally sound and reliable in use, thereby solving the problem of blind spots in aluminum powder dispersion and significantly improving the screening effect and efficiency compared with existing technologies.

[0005] The technical solution of this utility model is:

[0006] A four-stage precision classification system for ultrafine high-purity aluminum powder includes a vertical classification chamber and, from top to bottom, a primary classification chamber, a secondary classification chamber, a tertiary classification chamber, and a quaternary classification chamber arranged within the vertical classification chamber. The key technical features are: the bottom of the primary, secondary, and tertiary classification chambers are conical sieve plates; a stirring motor is located at the center of the top of the vertical classification chamber; and an integrated stirring shaft connected to the output shaft of the stirring motor is provided in each of the primary, secondary, and tertiary classification chambers. A primary stirring paddle located in the primary classification chamber is mounted on the integrated stirring shaft. The secondary agitator is located in the secondary sorting chamber, and the tertiary agitator is located in the tertiary sorting chamber. The screen holes of the conical screen plates in the primary, secondary, and tertiary sorting chambers decrease in size sequentially. Multiple hollow columns are evenly arranged in the tertiary sorting chamber. The outer wall of the hollow columns is evenly provided with a group of through holes, and the inner surface of the hollow columns is provided with a fine mesh layer. The bottom surface of the vertical grading box is provided with a discharge port that communicates with the lower end of the hollow columns. The bottom of the vertical grading box is provided with a collection hopper that communicates with each discharge port. The lower end of the collection hopper is provided with an outlet for connecting to the suction unit.

[0007] The aforementioned four-stage precision grading system for ultrafine high-purity aluminum powder includes a vertical grading chamber with a primary discharge port corresponding to the lower part of the primary sorting chamber, a secondary discharge port corresponding to the lower part of the secondary sorting chamber, a tertiary discharge port corresponding to the lower part of the tertiary sorting chamber, and a quaternary discharge port corresponding to the lower part of the quaternary sorting chamber. Control valves are provided at the primary, secondary, tertiary, and quaternary discharge ports respectively.

[0008] The aforementioned four-stage precision grading system for ultrafine high-purity aluminum powder has a feed inlet on the top side of the vertical grading box corresponding to the upper part of the first-stage sorting chamber.

[0009] In the aforementioned four-stage precision grading system for ultrafine high-purity aluminum powder, the lower ends of the conical sieve plates in the first-stage, second-stage, and third-stage sorting chambers are respectively provided with bearing seats that cooperate with an integrated stirring shaft. The integrated stirring shaft is fixed with a protective cover above the bearing seat, and the lower edge of the protective cover is provided with a wear-resistant edge that contacts the conical sieve plate.

[0010] The aforementioned four-stage precision grading system for ultrafine high-purity aluminum powder includes a brush body in contact with the conical sieve plate in the first-stage, second-stage, and third-stage stirring paddles.

[0011] The beneficial effects of this utility model are:

[0012] This system achieves three-stage separation through the first-stage separation chamber, the second-stage separation chamber, and the cone-shaped screen plate at the bottom of the third-stage separation chamber. Finally, it achieves a fourth-stage precision separation through the hollow column and its internal fine mesh layer. The aluminum powder material above the cone-shaped screen plate has no blind spots, which effectively improves the screening and separation effect and efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 yes Figure 1 The left view;

[0015] Figure 3 yes Figure 1 Enlarged view of section A.

[0016] In the diagram: 1. Feed inlet, 2. Vertical grading box, 3. Primary agitator, 4. Agitator motor, 5. Integrated agitator shaft, 6. Primary sorting chamber, 7. Conical sieve plate, 8. Secondary sorting chamber, 9. Secondary agitator, 10. Tertiary sorting chamber, 11. Tertiary agitator, 12. Quaternary sorting chamber, 13. Hollow column, 14. Fine mesh layer, 15. Discharge port, 16. Collection hopper, 17. Primary discharge port, 18. Secondary discharge port, 19. Tertiary discharge port, 20. Quaternary discharge port, 21. Protective cover, 22. Wear-resistant edge, 23. Bearing seat, 24. Through hole assembly, 25. Brush body. Detailed Implementation

[0017] The present invention will be described in detail with reference to the accompanying drawings.

[0018] like Figures 1-3 As shown, the ultrafine high-purity aluminum powder four-stage precision classification system includes a vertical classification box 2, and a first-stage sorting chamber 6, a second-stage sorting chamber 8, a third-stage sorting chamber 10, and a fourth-stage sorting chamber 12 arranged sequentially from top to bottom in the vertical classification box 2.

[0019] The bottom of the primary sorting chamber 6, secondary sorting chamber 8, and tertiary sorting chamber 10 are all cone-shaped sieve plates 7. A stirring motor 4 is located at the center of the top of the vertical grading box 2. Each of the primary sorting chamber 6, secondary sorting chamber 8, and tertiary sorting chamber 10 has an integrated stirring shaft 5 connected to the output shaft of the stirring motor 4. The integrated stirring shaft 5 has a primary stirring paddle 3 in the primary sorting chamber 6, a secondary stirring paddle 9 in the secondary sorting chamber 8, and a tertiary stirring paddle 11 in the tertiary sorting chamber 10. The sieve apertures of the cone-shaped sieve plates 7 in the primary sorting chamber 6, secondary sorting chamber 8, and tertiary sorting chamber 10 decrease sequentially.

[0020] Multiple hollow columns 13 are evenly arranged in the four-stage sorting chamber 12. The outer wall of each hollow column 13 is evenly provided with through-hole groups 24, and the inner surface of each hollow column 13 is provided with a fine mesh layer 14. The bottom surface of the vertical grading box 2 is provided with a discharge port 15 communicating with the lower end of the hollow columns 13. The bottom of the vertical grading box 2 is provided with a collection hopper 16 communicating with each discharge port 15. The lower end of each collection hopper 16 is provided with an outlet for connection to a suction unit.

[0021] In this embodiment, the vertical grading chamber 2 is provided with a primary discharge port 17 corresponding to the lower part of the primary sorting chamber 6, a secondary discharge port 18 corresponding to the lower part of the secondary sorting chamber 8, a tertiary discharge port 19 corresponding to the lower part of the tertiary sorting chamber 10, and a quaternary discharge port 20 corresponding to the lower part of the quaternary sorting chamber 12. Control valves are respectively provided at the primary discharge port 17, secondary discharge port 18, tertiary discharge port 19, and quaternary discharge port 20. A feed inlet 1 corresponding to the upper part of the primary sorting chamber 6 is provided on the top side of the vertical grading chamber 2.

[0022] The lower ends of the conical screen plates 7 in the primary sorting chamber 6, secondary sorting chamber 8, and tertiary sorting chamber 10 are respectively provided with bearing seats 23 that cooperate with the integrated stirring shaft 5. The integrated stirring shaft 5 is fixed with a protective cover 21 above the bearing seat 23. The lower edge of the protective cover 21 is provided with a wear-resistant edge 22 that contacts the conical screen plate 7. The primary stirring paddle 3, secondary stirring paddle 9, and tertiary stirring paddle 11 are provided with brush bodies 25 that contact the conical screen plate 7.

[0023] Working principle:

[0024] Start the stirring motor 4, which drives the first-stage stirring blade 3, the second-stage stirring blade 9, and the third-stage stirring blade 11 to rotate in the first-stage sorting chamber 6, the second-stage sorting chamber 8, and the third-stage sorting chamber 10 through the integrated stirring shaft 5.

[0025] Aluminum powder is conveyed to inlet 1 via an inclined screw conveyor. Under the agitation of the primary stirring paddle 3, the powder is evenly distributed above the conical screen plate 7 of the primary sorting chamber 6, and falls through the screen holes of the conical screen plate 7 into the secondary sorting chamber 8, where larger particles are retained. Similarly, the powder falling into the secondary sorting chamber 8 is evenly distributed above the conical screen plate 7 under the action of the secondary stirring paddle 9, and then falls through the screen holes of the conical screen plate 7 into the tertiary sorting chamber 10, where larger particles are retained. The powder falling into the tertiary sorting chamber 10 is evenly distributed above the conical screen plate 7 under the action of the tertiary stirring paddle 11, and then falls through the screen holes of the conical screen plate 7 into the quaternary sorting chamber 12, where larger particles are retained. Under the action of the suction unit, the material is sucked into each hollow column 13 during the falling process, and then collected and conveyed to the outside by the collection hopper 16. The granular material that cannot be sucked is intercepted in the four-stage sorting chamber 12.

[0026] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made within the scope of this utility model should still fall within the scope of this patent.

Claims

1. A superfine high-purity aluminum powder four-stage precision grading system, comprising a vertical grading box body, a first-stage separation cavity, a second-stage separation cavity, a third-stage separation cavity and a fourth-stage separation cavity arranged in the vertical grading box body from top to bottom, characterized in that: The bottom of the first, second and third sorting cavities is a conical sieve plate, the vertical classification box body is provided with a stirring motor at the top center, the first, second and third sorting cavities are provided with an integrated stirring shaft connected with the output shaft of the stirring motor, the integrated stirring shaft is provided with a first stirring paddle in the first sorting cavity, a second stirring paddle in the second sorting cavity and a third stirring paddle in the third sorting cavity, the sieve holes of the conical sieve plates of the first, second and third sorting cavities are gradually reduced, the fourth sorting cavity is uniformly provided with a plurality of hollow columns, the outer wall of the hollow column is uniformly provided with a group of through holes, the inner surface of the hollow column is provided with a fine mesh layer, the bottom surface of the vertical classification box body is provided with a discharge port communicated with the lower end of the hollow column, the bottom of the vertical classification box body is provided with a collecting hopper communicated with each discharge port, and the lower end of the collecting hopper is provided with an outlet connected with a suction unit.

2. The ultrafine high purity aluminum powder quaternary precision classification system of claim 1, wherein: The vertical classification box body is provided with a first discharge port corresponding to the lower part of the first sorting cavity, a second discharge port corresponding to the lower part of the second sorting cavity, a third discharge port corresponding to the lower part of the third sorting cavity and a fourth discharge port corresponding to the lower part of the fourth sorting cavity, and the first, second, third and fourth discharge ports are respectively provided with control valves.

3. The ultrafine high purity aluminum powder quaternary precision classification system of claim 1, wherein: The top side of the vertical classification box body is provided with a feed port corresponding to the upper part of the first sorting cavity.

4. The ultrafine high purity aluminum powder quaternary precision classification system of claim 1, wherein: The lower end of the conical sieve plate of the first, second and third sorting cavities is respectively provided with a bearing seat matched with the integrated stirring shaft, the integrated stirring shaft is fixed with a protective cover above the bearing seat, and the lower edge of the protective cover is provided with a wear-resistant edge in contact with the conical sieve plate.

5. The ultrafine high purity aluminum powder quaternary precision classification system of claim 1, wherein: The first, second and third stirring paddles are provided with brush bodies in contact with the conical sieve plate.

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