Efficient winnowing device for high-quality fly ash

Abstract

The utility model discloses a high-quality fly ash efficient winnowing device which comprises a winnowing box, an air inlet is formed in one end of the winnowing box, two sets of angle-adjustable baffles are arranged in an inner cavity of the winnowing box in the air inlet direction, each set of baffles is movably connected with a set of first collecting pieces, and the heights of the two sets of baffles are gradually increased. The angle-adjustable baffle can be flexibly matched with pulverized coal with different sources and different particle distributions, particles with different particle sizes can be effectively separated by adjusting the angle of the baffle when the particle size distribution of the pulverized coal particles changes, the winnowing efficiency is greatly improved, and the winnowing efficiency is improved. By accurately controlling the angle of the baffle, the winnowing process can be more stable, it is guaranteed that the quality of collected fly ash is uniform, the production requirement of high-quality fly ash is met, and meanwhile the adaptability of the winnowing device to different wind forces is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of air separation technology, specifically to a high-efficiency air separation device for high-quality fly ash. Background Technology

[0002] In modern industrial production, high-quality fly ash is an important industrial raw material, widely used in building materials, concrete admixtures, and other fields. Its quality directly affects the performance and quality of subsequent products. Therefore, efficient air classification of fly ash to achieve particle size separation is crucial. Currently, in the field of fly ash air classification technology, some air classification devices employ a progressively taller baffle structure. Utilizing the combination of wind power and baffles, different particle sizes of fly ash are blocked and collected. This technology, by setting up multiple levels of baffles, allows fly ash of different sizes to separate due to differences in trajectory and inertia under the action of wind, colliding with baffles of different heights and falling into corresponding collection areas, thus achieving a certain degree of preliminary classification of fly ash.

[0003] However, existing air classifiers of this type have certain drawbacks. For example, most of their baffles are fixed and the angle cannot be flexibly adjusted according to the actual working conditions and characteristics of the coal powder. In actual production, when the particle size distribution of coal powder changes, the fixed-angle baffle may cause some particles to be unable to be effectively separated, resulting in low air classifier efficiency and inconsistent quality of the collected fly ash. Therefore, it is necessary to design a high-quality fly ash high-efficiency air classifier to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a high-quality fly ash high-efficiency air separation device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-quality fly ash high-efficiency air separation device, including an air separation box, an air inlet at one end of the air separation box, and two sets of adjustable-angle baffles arranged in the inner cavity of the air separation box along the air inlet direction. Each set of baffles is movably connected to a first collection component, and the height of the two sets of baffles increases progressively. Each set of baffles can be locked by a locking component.

[0006] Preferably, the locking assembly includes a bracket, a first bolt, and positioning holes. A bracket is integrally formed at the top of each set of baffles, and two sets of the first bolts are threaded to the other end of the bracket. The first bolts can be inserted into the positioning holes opened in the inner wall of the air separator. Multiple sets of positioning holes are opened at equal intervals along the rotation trajectory of the baffle.

[0007] Preferably, an arc-shaped plate is installed on the upper side of each set of baffles facing the air intake direction.

[0008] Preferably, a set of second collectors is provided on the side of the first collector facing the air inlet direction, and a filter screen is installed on the top of the second collector near the first collector. The top of the air separator box is provided with a discharge port corresponding to the second collector.

[0009] Preferably, a third collector is provided on the side of the first collector away from the air intake direction, and the two sets of the first collectors and the set of the third collectors form a collection area.

[0010] Preferably, a detachable sealing component is installed on the top of one end of the air separator corresponding to the collection area. The sealing component is plugged into the air separator and can be fixed by a second bolt.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. Compared with the existing technology, the adjustable baffle of this utility model can flexibly adapt to coal powder from different sources and with different particle distributions. When the particle size distribution of coal powder changes, the baffle angle can be adjusted to ensure that particles of all sizes can be effectively separated, which greatly improves the efficiency of air separation. By precisely controlling the baffle angle, the air separation process can be made more stable, ensuring that the quality of the collected fly ash is uniform and meeting the production requirements of high-quality fly ash. At the same time, it enhances the adaptability of the air separation device to different wind speeds and improves the reliability and practicality of the entire air separation device.

[0013] 2. The positioning hole of this utility model cooperates with the first bolt to realize the multi-angle precise adjustment and stable locking of the baffle, adapting to different working conditions. The arc plate optimizes the airflow direction, reduces airflow turbulence, increases the probability of particle collision and separation from the baffle, and further improves the air classification efficiency and fly ash quality.

[0014] 3. The discharge port and air inlet of this utility model are matched to optimize the way coal powder enters the air classifier box. The filter screen and the second collection element achieve pre-screening, separating large particle impurities and reducing the pressure of subsequent air classification. Two sets of adjustable baffles cooperate with the first collection element to accurately classify and screen coal powder. The third collection element collects the remaining fine particles to ensure comprehensive coal powder collection. The detachable sealing parts facilitate the cleaning and maintenance of the collection area and ensure the continuous and efficient operation of the air classifier. Attached Figure Description

[0015] Figure 1 This is an exploded half-sectional view of the overall structure of this utility model;

[0016] Figure 2 This utility model Figure 1 Enlarged view of point A;

[0017] Figure 3 This utility model Figure 1 Enlarged view of point B;

[0018] Figure 4 This is a schematic diagram of the overall structure of this utility model.

[0019] In the diagram: 1. Air separator; 2. Air inlet; 3. Baffle; 4. First collector; 5. Bracket; 6. First bolt; 7. Positioning hole; 8. Arc plate; 9. Second collector; 10. Filter screen; 11. Discharge port; 12. Third collector; 13. Sealing component; 14. Second bolt. Detailed Implementation

[0020] 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.

[0021] Example 1

[0022] Please refer to Figure 1-4 As shown, this utility model provides a high-quality fly ash high-efficiency air separation device, including an air separation box 1. An air inlet 2 is provided at one end of the air separation box 1. Two sets of adjustable baffles 3 are arranged in the inner cavity of the air separation box 1 along the air inlet direction. Each set of baffles 3 is movably connected to a set of first collection components 4, and the height of the two sets of baffles 3 increases progressively. Each set of baffles 3 can be locked by a set of locking components.

[0023] The airflow containing pulverized coal enters the inner cavity of the air classifier 1 through the air inlet 2 at one end. When the airflow passes through the first set of adjustable-angle baffles 3, the angle of the baffles 3 can be adjusted according to the actual working conditions and the characteristics of the pulverized coal, which can change the direction and speed of the airflow. This causes pulverized coal particles of different sizes to move along a certain trajectory under the action of the airflow. Larger and heavier particles are more likely to collide with the baffles 3 due to inertia and other factors, and slide down the baffles 3 into the first collection element 4 that is movably connected to them and be collected. The airflow that has undergone preliminary screening by the first set of baffles 3 continues to flow towards the first collection element 4. The airflow moves forward and reaches the second set of adjustable-angle baffles 3 at a higher height. These baffles 3 further screen the remaining particles in the airflow. Similarly, depending on the angle of the baffles 3, particles of suitable size will be separated and fall into the first collection unit 4 connected to them. Through the two sets of baffles 3 with different heights and adjustable angles, the coal powder particles in the airflow are classified and screened, achieving effective separation of particles of different sizes. Each set of baffles 3 can be locked by a locking component to ensure that the baffles 3 remain stable in position during operation after the appropriate angle is adjusted.

[0024] Compared to existing technologies, the adjustable-angle baffle 3 can flexibly adapt to coal powder from different sources and with different particle distributions. When the particle size distribution of coal powder changes, adjusting the angle of the baffle 3 ensures that particles of all sizes can be effectively separated, greatly improving the efficiency of air separation. By precisely controlling the angle of the baffle 3, the air separation process can be made more stable, ensuring that the collected fly ash is of uniform quality and meeting the production requirements of high-quality fly ash. At the same time, it enhances the adaptability of the air separation device to different wind speeds, improving the reliability and practicality of the entire air separation device.

[0025] Specifically, the locking assembly includes a bracket 5, a first bolt 6, and a positioning hole 7. A bracket 5 is integrally formed at the top of each set of baffles 3. The other end of the bracket 5 is threaded to two sets of first bolts 6. The first bolts 6 can be inserted into the positioning holes 7 opened in the inner wall of the air separator box 1. Multiple sets of positioning holes 7 are opened at equal intervals along the rotation trajectory of the baffles 3. A set of arc-shaped plates 8 is installed on the side of the upper end of each set of baffles facing the air inlet direction.

[0026] The bracket 5 at the top of the baffle 3 is locked to the positioning hole 7 on the inner wall of the air separator 1 by the first bolt 6. When adjusting the angle of the baffle 3, loosen the first bolt 6, rotate the baffle 3, and when it is adjusted to a suitable angle, insert the first bolt 6 into the corresponding positioning hole 7 and tighten it. The coal powder-containing airflow enters through the air inlet 2, passes through the first set of baffles 3, and the particles are separated by impact. The remaining airflow continues to pass through the second set of higher baffles 3 for secondary screening and falls into the corresponding first collection piece 4. The arc plate 8 on the baffle 3 assists in guiding the airflow and particle movement.

[0027] The positioning hole 7 cooperates with the first bolt 6 to achieve precise multi-angle adjustment and stable locking of the baffle 3, adapting to different working conditions. The arc plate 8 optimizes the airflow direction, reduces airflow turbulence, increases the probability of particle collision and separation from the baffle 3, and further improves the air separation efficiency and fly ash quality.

[0028] Wherein: a set of second collection components 9 is provided on the side of the first collection component 4 facing the air inlet direction. A filter screen 10 is installed on the top of the second collection component 9 near the first collection component 4. A discharge port 11 is opened on the top of the air classifier box 1 corresponding to the second collection component 9. A third collection component 12 is provided on the side of the first collection component 4 away from the air inlet direction. The two sets of first collection components 4 and the set of third collection components 12 form a collection area. A detachable sealing component 13 is installed on the top of one end of the air classifier box 1 corresponding to the collection area. The sealing component 13 is plugged into the air classifier box 1 and can be fixed by the second bolt 14.

[0029] Coal powder is fed into the air classifier 1 through the discharge port 11. The air blown out from the air inlet 2 drives the coal powder to move. During the movement, the coal powder first passes through the filter screen 10. Larger particles or impurities are intercepted by the filter screen 10 and fall into the second collector 9. The coal powder that has passed through the filter screen 10 continues to move forward with the airflow and passes through two sets of adjustable baffles 3. Coal powder of different particle sizes falls into the corresponding first collector 4 under the action of airflow and the obstruction of the baffles 3. Finally, the fine coal powder particles that pass through the baffles 3 enter the collection area formed by the two sets of baffles 3 and the third collector 12 and are collected by the third collector 12. The sealing part 13 is fixed to the top of the air classifier 1 by the second bolt 14. It can be removed when the collection area needs to be cleaned.

[0030] The discharge port 11 works in conjunction with the air inlet 2 to optimize the way coal powder enters the air classifier box 1. The filter screen 10 and the second collection component 9 perform pre-screening to separate large particles of impurities and reduce the pressure of subsequent air classification. Two sets of adjustable baffles 3 work in conjunction with the first collection component 4 to accurately classify and screen coal powder. The third collection component 12 collects the remaining fine particles to ensure comprehensive coal powder collection. The detachable sealing component 13 facilitates cleaning and maintenance of the collection area and ensures the continuous and efficient operation of the air classifier.

[0031] Working principle: The bracket 5 at the top of the baffle 3 is locked to the positioning hole 7 on the inner wall of the air classifier 1 by the first bolt 6. When adjusting the angle of the baffle 3, loosen the first bolt 6, rotate the baffle 3, and when it is adjusted to a suitable angle, insert the first bolt 6 into the corresponding positioning hole 7 and tighten it. Coal powder is put into the air classifier 1 from the discharge port 11. The air blown out of the air inlet 2 drives the coal powder to move. During the movement, the coal powder first passes through the filter screen 10. Larger particles or impurities are intercepted by the filter screen 10 and fall into the second collection element 9. The coal powder that passes through the filter screen 10 continues to move forward with the airflow. After passing through two sets of baffles with adjustable angles, coal powder of different particle sizes falls into the corresponding first collection element 4 under the action of airflow and the obstruction of the baffles 3. Finally, the fine coal powder particles that pass through the baffles 3 enter the collection area formed by the two sets of baffles 3 and the third collection element 12 and are collected by the third collection element 12. The sealing element 13 is fixed to the top of the air classifier 1 by the second bolt 14. It can be disassembled when the collection area needs to be cleaned.

[0032] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-efficiency air classifier for high-quality fly ash, comprising an air classifier box (1), characterized in that: The air separator (1) has an air inlet (2) at one end. The inner cavity of the air separator (1) is provided with two sets of adjustable baffles (3) along the air inlet direction. Each set of baffles (3) is movably connected to a set of first collection components (4). The height of the two sets of baffles (3) increases gradually. Each set of baffles (3) can be locked by a set of locking components.

2. The high-quality fly ash high-efficiency air separation device according to claim 1, characterized in that: The locking assembly includes a bracket (5), a first bolt (6), and a positioning hole (7). Each set of the baffles (3) has a bracket (5) integrally formed at the top. The other end of the bracket (5) is threaded to two sets of the first bolts (6). The first bolts (6) can be inserted into the positioning holes (7) opened on the inner wall of the air separator (1). Multiple sets of positioning holes (7) are opened at equal intervals along the rotation trajectory of the baffles (3).

3. The high-quality fly ash high-efficiency air separation device according to claim 1, characterized in that: Each set of baffles (3) has an arc-shaped plate (8) installed on the side of the upper end facing the air inlet direction.

4. The high-quality fly ash high-efficiency air separation device according to claim 1, characterized in that: A set of second collection components (9) is provided on the side of the first collection component (4) facing the air inlet direction. A filter screen (10) is installed on the top of the second collection component (9) near the first collection component (4). A discharge port (11) is opened on the top of the air separator (1) corresponding to the second collection component (9).

5. The high-quality fly ash high-efficiency air separation device according to claim 1, characterized in that: A third collection element (12) is provided on the side of the first collection element (4) away from the air intake direction, and the two sets of the first collection elements (4) and the set of the third collection elements (12) form a collection area.

6. The high-quality fly ash high-efficiency air separation device according to claim 5, characterized in that: A detachable sealing element (13) is installed on the top of one end of the air separator (1) corresponding to the collection area. The sealing element (13) is plugged into the air separator (1) and can be fixed by a second bolt (14).

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