Alumina powder production screening and grading device
The synchronous movement of the upper and lower screening frames in the alumina powder production device is achieved through a gear and rack linkage mechanism, which solves the problems of screen surface retention and uneven load, and improves the grading and screening efficiency of alumina powder.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CEMAT (SUZHOU) CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-05-29
AI Technical Summary
In existing alumina powder production equipment, the upper and lower screening mechanisms move asynchronously, causing material to stagnate on the screen surface, resulting in uneven local screening load and difficulty in falling quickly, thus affecting screening efficiency.
The system employs a gear and rack linkage mechanism, where a motor drives the first guide rod to rotate the gear, and the rack synchronously drives the second guide rod, enabling the upper and lower screening frames to move synchronously. This allows for graded screening using screening meshes of different aperture sizes.
This technology enables efficient classification and screening of alumina powder, avoids retention, improves screening efficiency, and ensures accurate separation of alumina powder according to particle size range.
Smart Images
Figure CN224293876U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of screening and grading devices, specifically a screening and grading device for alumina powder production. Background Technology
[0002] Screening and grading devices typically employ multi-stage vibrating sieving or air classifying technology. They use sieves of different mesh sizes or centrifugal force fields to precisely sort calcined alumina powder according to particle size range. They are also equipped with dust removal systems and automated control systems, which can efficiently separate micron-sized particles and control particle size distribution to meet the requirements of powder uniformity and purity in fields such as electronic ceramics and refractory materials.
[0003] In the existing alumina powder classification technology field, conventional single-layer screens or independently driven layered screening devices lack mechanical linkage mechanisms between layers, resulting in asynchronous movement of the upper and lower screening mechanisms. This can easily lead to problems such as material retention on the screen surface and uneven local screening load, making it difficult for the residual material from the upper coarse screen to fall quickly to the lower fine screen station, thus hindering the rapid screening of alumina powder. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this utility model provides a screening and grading device for alumina powder production, which solves the problems mentioned in the background art, such as asynchronous movement of the upper and lower screening mechanisms, which easily leads to material retention on the screen surface and uneven local screening load, making it difficult for the residual material from the upper coarse screen to fall quickly to the lower fine screen station, thus making it difficult to quickly screen alumina powder.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: a screening and grading device for alumina powder production, comprising:
[0008] A screening and grading chamber is provided, wherein a first screening frame is installed in the upper part of the inner cavity of the screening and grading chamber, and a second screening frame is installed in the middle part of the inner cavity of the screening and grading chamber. Both the first screening frame and the second screening frame are provided with screening frames, and screening mesh is installed at the bottom of each screening frame. The holes of the upper screening mesh are larger than the holes of the lower screening mesh.
[0009] An installation block is set on the front of the screening frame. A motor is installed on the inner wall of the first screening frame. A first guide rod is coaxially installed on the rotor of the motor. The first guide rod is screwed to the installation block.
[0010] The second guide rod is disposed on the inner wall of the second screening rack. The second guide rod is screwed into the inner cavity of the mounting block. A collection drawer is inserted into the bottom of the inner cavity of the screening and grading chamber.
[0011] Gears are mounted on the surfaces of both the first and second guide rods, and racks are fitted between the gears. Rotation of the first guide rod can drive the gears to rotate, and the racks can drive the second guide rod to rotate synchronously, thereby enabling the two screening frames to move synchronously.
[0012] Preferably, each of the screening frames is equipped with a funnel at the bottom, and a feeding pipe is installed at the bottom of the upper funnel. The funnel can transport the alumina powder screened in the screening frame, and the feeding pipe can accurately input the alumina powder screened in the upper screening frame into the lower screening frame.
[0013] Preferably, a sliding plate is installed on the back of each screening frame, and grooves are opened on the inner walls of the first and second screening frames at positions corresponding to the sliding plates. The sliding plates are embedded in the grooves, allowing the screening frames to move in a straight line.
[0014] Preferably, the right end of the first guide rod is connected to the inner wall of the first screening rack via a bearing, and a connecting rod is installed at the left end of the second guide rod. Both the connecting rod and the right end of the second guide rod are installed on the inner wall of the second screening rack via bearings, so that the first guide rod and the second guide rod can rotate stably.
[0015] Preferably, the surface of the screening box is equipped with a handle, and the surface of the handle is equipped with an anti-slip pad, so that the collection drawer can be easily pulled out through the handle.
[0016] Beneficial effects
[0017] Compared with the prior art, this utility model provides a screening and grading device for alumina powder production, which has the following beneficial effects:
[0018] This alumina powder production screening and grading device includes a motor that drives a first guide rod to rotate, which in turn drives a gear to rotate, which in turn drives a second guide rod to rotate. This, in turn, moves the screening frame, allowing the alumina powder in the frame to be screened. The alumina powder in the upper screening frame falls into the lower screening frame. Because the holes in the upper screening screen are larger than those in the lower screening screen, the alumina powder can be screened again, achieving a graded screening of the alumina powder into three particle sizes. The synchronous screening by the screening frames prevents alumina powder from remaining on the screen surface, thus improving the screening efficiency. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the internal structure of this utility model;
[0021] Figure 3 This is a schematic diagram of the structure of the filter box of this utility model;
[0022] Figure 4 This is a schematic diagram of the drawer structure of this utility model.
[0023] In the diagram: 1. Screening and grading bin; 2. First screening rack; 3. Second screening rack; 4. Screening frame; 5. Screening mesh; 6. Mounting block; 7. Motor; 8. First guide rod; 9. Second guide rod; 10. Collection drawer; 11. Funnel; 12. Feeding pipe; 13. Slide plate; 14. Slide groove; 15. Gear; 16. Rack; 17. Connecting rod; 18. Handle. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] This utility model provides a technical solution: a screening and grading device for alumina powder production. Please refer to [link / reference]. Figure 1 The system includes a screening and grading chamber 1. A first screening frame 2 is installed in the upper part of the inner cavity of the screening and grading chamber 1. A second screening frame 3 is installed in the middle of the inner cavity of the screening and grading chamber 1. Both the inner cavities of the first screening frame 2 and the second screening frame 3 are provided with screening frames 4. Screening mesh 5 is installed at the bottom of the screening frames 4. The holes of the upper screening mesh 5 are larger than the holes of the lower screening mesh 5.
[0026] Please see Figure 2 Mounting block 6 is located on the front of the screening frame 4. A motor 7 is installed on the inner wall of the first screening frame 2. Please refer to [link / reference]. Figure 3 The rotor of motor 7 is coaxially mounted with a first guide rod 8, which is screwed onto the mounting block 6.
[0027] Please see Figure 2 The second guide rod 9 is set on the inner wall of the second screening rack 3. The second guide rod 9 is screwed into the inner cavity of the mounting block 6. A collection drawer 10 is inserted into the bottom of the inner cavity of the screening and grading chamber 1.
[0028] Gears 15 are mounted on the surfaces of the first guide rod 8 and the second guide rod 9. A rack 16 is sleeved between the gears 15. The rotation of the first guide rod 8 can drive the gears 15 to rotate, and the rack 16 can drive the second guide rod 9 to rotate synchronously, thereby driving the two screening frames 4 to move synchronously.
[0029] The starting motor 7 drives the first guide rod 8 to rotate, which in turn drives the gear 15 to rotate. Through the rack 16, the gear 15 drives the second guide rod 9 to rotate, thereby moving the screening frame 4. This allows the alumina powder in the screening frame 4 to be screened. The alumina powder in the upper screening frame 4 falls into the lower screening frame 4. Since the holes in the upper screening mesh 5 are larger than those in the lower screening mesh 5, the alumina powder can be screened again, achieving graded screening of the alumina powder into three particle sizes. Furthermore, the synchronous screening by the screening frames 4 allows for simultaneous screening of alumina powder particles by size, improving the screening efficiency of the alumina powder.
[0030] Each screening box 4 has a funnel 11 installed at its bottom. A feed pipe 12 is installed at the bottom of the upper funnel 11. The alumina powder screened in the screening box 4 can be conveyed through the funnel 11, and the alumina powder screened in the upper screening box 4 can be accurately fed into the lower screening box 4 through the feed pipe 12.
[0031] The back of each screening frame 4 is equipped with a sliding plate 13. The inner walls of the first screening frame 2 and the second screening frame 3 are provided with grooves 14 corresponding to the sliding plate 13. The sliding plate 13 is embedded in the groove 14, so that the screening frame 4 can move in a straight line.
[0032] The right end of the first guide rod 8 is connected to the inner wall of the first screening rack 2 via a bearing. The left end of the second guide rod 9 is equipped with a connecting rod 17. Both the connecting rod 17 and the right end of the second guide rod 9 are installed on the inner wall of the second screening rack 3 via bearings, so that the first guide rod 8 and the second guide rod 9 can rotate stably.
[0033] Please see Figure 4 The surface of the filter box 4 is equipped with a handle 18, and the surface of the handle 18 is equipped with an anti-slip pad. The collection drawer 10 can be easily pulled out through the handle 18.
[0034] In operation, this solution works as follows: First, starting the motor 7 drives the first guide rod 8 to rotate, which in turn drives the gear 15 to rotate. Through the rack 16, the second guide rod 9 rotates, which in turn moves the screening frame 4, thus screening the alumina powder in the screening frame 4. Then, the funnel 11 conveys the screened alumina powder from the screening frame 4, and the feed pipe 12 accurately feeds the alumina powder screened in the upper screening frame 4 into the lower screening frame 4. The alumina powder in the upper screening frame 4 falls into the lower screening frame 4. Finally, because the holes in the upper screening mesh 5 are larger than those in the lower screening mesh 5, the alumina powder can be screened again, achieving graded screening of the alumina powder into three particle sizes. Furthermore, the synchronous screening by the screening frames 4 allows for simultaneous screening of alumina powder particle sizes, improving the screening efficiency of the alumina powder.
[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A screening and grading device for alumina powder production, characterized in that, include: A screening and grading chamber (1) is provided with a first screening frame (2) installed on the upper part of the inner cavity of the screening and grading chamber (1) and a second screening frame (3) installed in the middle part of the inner cavity of the screening and grading chamber (1). The inner cavities of the first screening frame (2) and the second screening frame (3) are provided with screening frames (4). The bottom of the screening frames (4) is provided with screening mesh (5). The holes of the upper screening mesh (5) are larger than the holes of the lower screening mesh (5). Mounting block (6) is set on the front of the screening frame (4). A motor (7) is installed on the inner wall of the first screening frame (2). A first guide rod (8) is coaxially mounted on the rotor of the motor (7). The first guide rod (8) is screwed to the mounting block (6). The second guide rod (9) is set on the inner wall of the second screening rack (3). The second guide rod (9) is screwed into the inner cavity of the mounting block (6). A collection drawer (10) is inserted into the bottom of the inner cavity of the screening and grading bin (1). Gears (15) are installed on the surfaces of the first guide rod (8) and the second guide rod (9). A rack (16) is sleeved between the gears (15).
2. The screening and grading device for alumina powder production according to claim 1, characterized in that: Each of the screening boxes (4) is equipped with a funnel (11) at its bottom, and a feed pipe (12) is installed at the bottom of the funnel (11) located above.
3. The screening and grading device for alumina powder production according to claim 1, characterized in that: The back of each screening frame (4) is equipped with a sliding plate (13), and the inner walls of the first screening frame (2) and the second screening frame (3) are provided with grooves (14) at the corresponding positions of the sliding plate (13).
4. The screening and grading device for alumina powder production according to claim 1, characterized in that: The right end of the first guide rod (8) is connected to the inner wall of the first screening rack (2) through a bearing. The left end of the second guide rod (9) is equipped with a connecting rod (17). The right ends of the connecting rod (17) and the second guide rod (9) are both installed on the inner wall of the second screening rack (3) through bearings.
5. The screening and grading device for alumina powder production according to claim 1, characterized in that: The surface of the filter box (4) is fitted with a handle (18), and the surface of the handle (18) is fitted with an anti-slip pad.