Multistage screening device for refining white corundum

Abstract

The utility model discloses a multistage screening device for white corundum refining, including, device main part and lid, the inside of device main part is provided with the screen of multiple groups, the outside of device main part is provided with oscillator, be provided with multiple groups of discharge gate on device main part, the top of device main part is located lid, the top of lid is provided with the feed port, the inside of lid is provided with the bulk material mechanism, and the bulk material mechanism includes the guide plate of inclination setting below the feed port, the uniform speed discharge board that cooperates with guide plate and the drive frame for driving uniform speed discharge board left and right reciprocating movement. The utility model discloses setting up the dispersing mechanism at the feed port, through the inclination structure of guide plate, the vertical impact of white corundum raw material is converted into oblique sliding, avoids the direct high -speed impact of material to screen, and cooperates the uniform speed discharge board that can reciprocating move, and the material is scattered into the small flow of multiple strands, evenly covers the screen surface, thoroughly eliminates the local concentrated impact phenomenon, prolongs the service life of screen.

Description

Technical Field

[0001] This utility model relates to the technical field of white fused alumina production and application equipment, specifically a multi-stage sieving device for white fused alumina refining. Background Technology

[0002] The multi-stage sieving device for refining white fused alumina is a specialized piece of equipment for fine particle size classification of white fused alumina abrasive. Its core function is to precisely separate coarsely processed white fused alumina particles into different particle size ranges through "multi-stage screening," ultimately obtaining a refined white fused alumina product with uniform particle size that meets industrial application standards.

[0003] Patent document CN216539472U discloses a multi-stage sieving device for refining white corundum. The protected claim includes a support frame, with a sieving device mounted on the upper end of the support frame. The sieving device comprises, from top to bottom, a cover, a hollow cylindrical sieving cylinder, and a conical discharge bin. A sleeve is mounted on the outer surface of a rotating shaft below the cover. Multiple material-pushing plates are evenly arranged around the outer circumference of the sleeve. A primary sieve plate, a secondary sieve plate, and a tertiary sieve plate are arranged from top to bottom inside the sieving cylinder. A hollow conical tilting plate is also provided at the lower end of both the primary and secondary sieve plates. This invention is reasonably designed, simple in structure, and easy to process. It can sieve materials of different specifications, improving the practicality of the device. It also prevents material accumulation, accelerates the sieving process, saves time and costs, and meets user needs.

[0004] However, the multi-stage sieving device for white fused alumina refining described in the aforementioned publicly available literature primarily considers the effective sieving requirements of various material specifications through the coordinated use of primary, secondary, and tertiary sieve plates. This allows for the production of different white fused alumina materials, with secondary crushing or other operations performed under the control of external components. This integration of multiple sieving mechanisms achieves the desired finished product standard for white fused alumina. However, it fails to consider that due to the high hardness and density of white fused alumina, and the sharpness of the refined particles, the screen located below the feed inlet will continuously experience high-speed impacts as the material enters the sieving mechanism. Prolonged impact can lead to fatigue and elasticity loss of the screen wires, resulting in localized dents, warping, and even breakage at the connection point with the screen frame, affecting the screen's lifespan. Furthermore, if the screen becomes perforated due to impact wear, large white fused alumina particles that have not been refined to the required particle size will "pass through." The problem arises when the primary sieve is used for secondary and tertiary screening, resulting in uneven particle size in the final white corundum product and affecting the screening efficiency of the equipment. Utility Model Content

[0005] The purpose of this invention is to provide a multi-stage sieving device for refining white corundum, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A multi-stage sieving device for refining white fused alumina includes a main body and a cover. The main body has multiple sets of screens inside and a vibrator outside. The main body has multiple discharge ports that cooperate with the multiple sets of screens. The cover is located on top of the main body and has a feed inlet on its top. The cover has a material dispersing mechanism inside. The material dispersing mechanism includes a guide plate inclined below the feed inlet, a uniform discharge plate cooperating with the guide plate, and a drive frame for driving the uniform discharge plate to move back and forth.

[0007] Preferably, the guide plate is located inside the cover, and the inclined bottom end of the guide plate is provided with two sets of guide components that cooperate with the uniform speed discharge plate.

[0008] Preferably, the inner top of the cover is provided with a mounting frame, the uniform speed discharge plate is movably mounted on the mounting frame, and the uniform speed discharge plate is located on one side of the inclined bottom end of the guide plate, and the uniform speed discharge plate is provided with multiple sets of openings.

[0009] Preferably, a support frame is provided inside the cover, the support frame is located on one side of the uniform speed discharge plate, and the drive frame is movably installed on one side of the support frame. One end of the drive frame is fixedly connected to the outside of the uniform speed discharge plate, a connecting frame is provided at the middle position of the drive frame, and a drive motor is fixedly provided on the other side of the support frame. A turntable is provided at the output end of the drive motor, and a drive block that cooperates with the connecting frame is provided on the turntable.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model incorporates a dispersing mechanism at the feed inlet. The inclined structure of the guide plate transforms the vertical impact of the white fused alumina raw material into oblique sliding, preventing direct high-speed impact on the screen. Combined with a reciprocating, uniformly moving discharge plate, the material is dispersed into multiple small streams, evenly covering the screen surface. This completely eliminates localized concentrated impact, reduces fatigue damage to the screen wires, and prevents stress concentration from causing elastic failure, dents, or breakage of the screen, extending its service life. Furthermore, it ensures that all materials undergo thorough screening through the primary screen, preventing large white fused alumina particles from "leaking" to the next screen due to localized screen wear, thus eliminating the problem of excessive particle size in the finished product. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2This is a schematic diagram of the discharge port structure of this utility model; Figure 3 This is a schematic diagram of the screen structure of this utility model; Figure 4 This is a schematic diagram of the screen structure of this utility model; Figure 5 This is a schematic diagram of the guide plate structure of this utility model; Figure 6 This is a schematic diagram of the uniform discharge plate structure of this utility model; Figure 7 This is a schematic diagram of the drive frame structure of this utility model.

[0012] In the diagram: 1. Main body of the device; 2. Cover; 3. Vibrator; 4. Discharge port; 5. Screen; 6. Feed port; 7. Guide plate; 8. Uniform discharge plate; 9. Drive frame; 10. Mounting frame; 11. Opening; 12. Guide component; 13. Support frame; 14. Connecting frame; 15. Turntable; 16. Drive block; 17. Drive motor. Detailed Implementation

[0013] 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.

[0014] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0015] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0016] Please see Figure 1-7 A multi-stage sieving device for refining white corundum includes a device body 1 and a cover 2. The device body 1 is provided with multiple sets of screens 5 inside, and a vibrator 3 is provided outside the device body 1. The device body 1 is provided with multiple sets of discharge ports 4 that cooperate with the multiple sets of screens 5. The cover 2 is located on the top of the device body 1. The top of the cover 2 is provided with a feed port 6. The cover 2 is provided with a material dispersing mechanism inside. The material dispersing mechanism includes a guide plate 7 inclined below the feed port 6, a uniform speed discharge plate 8 that cooperates with the guide plate 7, and a drive frame 9 for driving the uniform speed discharge plate 8 to move back and forth. The main body 1 is the core load-bearing frame of the entire device and the foundation for the installation of all functional components. The cover 2 is located on the top of the main body 1 and mainly undertakes the dual functions of "sealing and protection" and "feeding pretreatment". The vibrator 3 is installed on the outside of the main body 1 and is the power source for the screen 5 to achieve vibration screening. The discharge port 4 is set on the main body 1 and corresponds to multiple sets of screens 5. It is the "exclusive outlet" for the graded white fused alumina. The screen 5 is the core functional component for screening. Multiple sets of screens 5 are arranged in layers inside the main body 1, and the aperture of the screen 5 decreases from top to bottom (achieving a step-like grading from "coarse to fine"). The feed port 6 is the only entrance for the white fused alumina raw material to enter the device.

[0017] Please see Figure 4-7 The guide plate 7 is located inside the cover 2. The inclined bottom end of the guide plate 7 is provided with two sets of guide components 12 that cooperate with the uniform speed discharge plate 8. The inner top of the cover 2 is provided with a mounting frame 10. The uniform speed discharge plate 8 is movably mounted on the mounting frame 10 and is located on one side of the inclined bottom end of the guide plate 7. The uniform speed discharge plate 8 is provided with multiple sets of openings 11. The cover 2 is provided with a support frame 13. The support frame 13 is located on one side of the uniform speed discharge plate 8 and the drive frame 9 is movably mounted on one side of the support frame 13. One end of the drive frame 9 is fixedly connected to the outside of the uniform speed discharge plate 8. A connecting frame 14 is provided at the middle position of the drive frame 9. A drive motor 17 is fixedly provided on the other side of the support frame 13. A turntable 15 is provided at the output end of the drive motor 17. A drive block 16 that cooperates with the connecting frame 14 is provided on the turntable 15. The guide plate 7 is inclined and positioned below the feed inlet 6. Its core function is "buffering and guiding". The white corundum raw material falling from the feed inlet 6 will first come into contact with the inclined guide plate 7, preventing the raw material from directly impacting the screen 5 below. At the same time, the inclined structure can use gravity to guide the raw material to move towards its inclined bottom end, preparing for the "uniform distribution" of the subsequent uniform discharge plate 8. The uniform discharge plate 8 is movably mounted on the mounting frame 10 and is located on one side of the inclined bottom end of the guide plate 7. Multiple sets of openings 11 are provided on its surface to allow the material to be conveyed by the guide plate 7. The delivered raw materials are dispersed into multiple small-flow materials. Simultaneously, driven by the drive frame 9, the uniform-speed discharge plate 8 can move back and forth, ensuring that the material output from the opening 11 evenly covers the surface of the uppermost screen 5, completely solving the problem of "concentrated raw material impacting the screen 5 locally." The mounting frame 10 provides "limiting and supporting" for the uniform-speed discharge plate 8, ensuring that the uniform-speed discharge plate 8 can only move back and forth in the left and right direction (avoiding vertical deviation or swaying), guaranteeing the stability of the uniform-speed discharge plate 8's movement, and thus ensuring the uniformity of material distribution. The guiding component 12... Used to precisely guide the raw materials on the guide plate 7 to the uniform discharge plate 8 for uniform discharge, the support frame 13 is the mounting carrier for the drive frame 9 and the drive motor 17. One side provides a limiting support for the drive frame 9 (ensuring that the drive frame 9 can only move left and right), and the other side fixes the drive motor 17, providing a stable structural foundation for the power transmission of the entire bulk material mechanism. One end of the drive frame 9 is fixedly connected to the outside of the uniform discharge plate 8, and the middle position cooperates with the drive block 16 through the connecting frame 14. Its core function is "power transmission", which can transmit the raw materials. The drive motor 17 converts the "circular motion" of the turntable 15 and drive block 16 into "left-right reciprocating linear motion", and drives the uniform speed discharge plate 8 to move synchronously, providing power for the uniform material distribution of the uniform speed discharge plate 8. The drive motor 17 is the power source of the material distribution mechanism. Through the output shaft, it drives the turntable 15 to rotate at high speed, converting electrical energy into mechanical energy, providing continuous and stable power for the movement of the drive frame 9 and the uniform speed discharge plate 8, ensuring that the material distribution mechanism can match the raw material feeding speed and the frequency of the screen 5, and achieve continuous and uniform material distribution.

[0018] Working principle: When the device is in use, the white corundum raw material first enters the device through the feed port 6 at the top of the cover 2. During the falling process, the raw material first contacts the inclined guide plate 7 inside the cover 2. With the help of the inclined structure of the guide plate 7, the raw material slides along the plate surface under the action of gravity, avoiding direct vertical impact on the screen 5 below, and completing the initial buffering. Subsequently, the two sets of guide components 12 at the inclined bottom of the guide plate 7 accurately guide the raw material to the surface of the uniform discharge plate 8 below. At this time, the drive motor 1, which is fixed on the support frame 13, starts to operate. When the device is started, its output end drives the turntable 15 to rotate at high speed. The drive block 16 on the edge of the turntable 15 then makes an eccentric circular motion. Due to the sliding fit between the drive block 16 and the connecting frame 14 in the middle of the drive frame 9, the circular motion is converted into the left and right reciprocating linear motion of the drive frame 9. The uniform discharge plate 8, which is fixedly connected to one end of the drive frame 9, moves back and forth synchronously. The multiple sets of openings 11 on its surface disperse the raw material into multiple small flow materials, so that the material is evenly covered on the surface of the uppermost screen 5 inside the main body of the device 1, completing the feeding pretreatment.

[0019] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A multi-stage sieving device for refining white corundum, comprising a device body (1) and a cover (2), wherein the device body (1) is provided with multiple sets of screens (5) inside, and a vibrator (3) is provided on the outside of the device body (1), and the device body (1) is provided with multiple sets of discharge ports (4) that cooperate with the multiple sets of screens (5), the cover (2) is located on the top of the device body (1), and the top of the cover (2) is provided with a feed inlet (6), characterized in that: The cover (2) is provided with a material dispersing mechanism, which includes a guide plate (7) inclined below the feed inlet (6), a uniform speed discharge plate (8) that cooperates with the guide plate (7), and a drive frame (9) for driving the uniform speed discharge plate (8) to move back and forth.

2. The multi-stage sieving device for refining white corundum according to claim 1, characterized in that: The guide plate (7) is located inside the cover (2), and the inclined bottom end of the guide plate (7) is provided with two sets of guide components (12) that cooperate with the uniform speed discharge plate (8).

3. The multi-stage sieving device for refining white corundum according to claim 2, characterized in that: The inner top of the cover (2) is provided with a mounting frame (10), and the uniform speed discharge plate (8) is movably mounted on the mounting frame (10). The uniform speed discharge plate (8) is located on one side of the inclined bottom end of the guide plate (7), and multiple sets of openings (11) are provided on the uniform speed discharge plate (8).

4. The multi-stage sieving device for refining white fused alumina according to claim 3, characterized in that: The cover (2) is provided with a support frame (13) inside. The support frame (13) is located on one side of the uniform speed discharge plate (8), and the drive frame (9) is limited and movable on one side of the support frame (13). One end of the drive frame (9) is fixedly connected to the outside of the uniform speed discharge plate (8). A connecting frame (14) is provided at the middle position of the drive frame (9). A drive motor (17) is fixedly provided on the other side of the support frame (13). A turntable (15) is provided at the output end of the drive motor (17). A drive block (16) that cooperates with the connecting frame (14) is provided on the turntable (15).

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