High-stability boiler fly ash sorting system
By designing a boiler fly ash sorting system that combines multi-stage grading and separator, the problem of insufficient sorting in the prior art is solved, and the full separation of fine ash and coarse ash is achieved, the sorting quality is improved and the waste of fine ash is reduced.
Patent Information
- Application Number
- CN202421600264.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-08
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-07-08
AI Technical Summary
The existing boiler fly ash sorting system has the problem of insufficient sorting, which leads to easy inclusion of fine ash in the coarse ash, resulting in waste of fine ash and poor sorting effect.
A high-stability boiler fly ash sorting system is designed, including fly ash storage tank, screw feeder, vortex classifier 1, centrifugal fan 1, vortex classifier 2, centrifugal fan 2, fine ash combined runner, cyclone separator, fine ash storage tank, coarse ash elevator and coarse ash storage tank. Through the combination of multi-stage grading and separator, the sufficient separation of fine ash and coarse ash is achieved.
Through the combination of multi-stage grading and separator, the full separation of fine ash and coarse ash is achieved, the comprehensiveness of sorting is improved, the waste of fine ash is reduced, and the fine ash is further filtered through the bag dust collector to prevent it from being discharged into the external air.
Smart Images
Figure CN223011185U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of sorting systems, and particularly relates to a high-stability boiler fly ash sorting system. Background Art
[0002] Fly ash is the fine ash particles carried by flue gas during the coal combustion process and collected by a dust collector, and it is one of the main solid wastes of a coal-fired boiler system.
[0003] Fly ash has a high utilization value. Before recycling, it needs to be sorted to separate fine ash and coarse ash. However, when the current sorting system is in use, there is a drawback of incomplete sorting. Fine ash is easily mixed in the coarse ash, resulting in waste of fine ash and poor sorting effect. Therefore, this application proposes a high-stability boiler fly ash sorting system to achieve full separation of fine ash and coarse ash and improve the sorting quality. Content of the Utility Model
[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a high-stability boiler fly ash sorting system, which effectively solves the problem of incomplete sorting existing in the existing boiler fly ash sorting system.
[0005] To achieve the above object, the utility model provides the following technical solution: A high-stability boiler fly ash sorting system includes a fly ash storage tank, a screw feeder, a first eddy current classifier, a first centrifugal fan, a second eddy current classifier, a second centrifugal fan, a fine ash combined flow channel, a cyclone separator, a fine ash storage tank, a coarse ash elevator and a coarse ash storage tank. The screw feeder is connected between the fly ash storage tank and the first eddy current classifier. The first centrifugal fan is connected to the first eddy current classifier. The second eddy current classifier is connected to the bottom end of the first eddy current classifier. The second centrifugal fan is connected to the second eddy current classifier. The fine ash combined flow channel is connected between the first eddy current classifier, the second eddy current classifier and the cyclone separator. The fine ash storage tank is connected to the bottom end of the cyclone separator. The coarse ash storage tank is connected to the second eddy current classifier through the coarse ash elevator.
[0006] Preferably, a bag filter is arranged on one side of the cyclone separator. The bag filter is connected to the cyclone separator through an air pipe, and the bag filter is connected to the fine ash storage tank through a discharge pipe.
[0007] Preferably, both the first eddy current classifier and the second eddy current classifier are composed of a housing, a feed inlet, an air inlet, a fine ash discharge port, a coarse ash discharge port, a motor, a classification wheel, a centrifugal dispersion assembly, and a rotary gate valve. The feed inlet is fixedly connected to one side of the top of the housing, the motor is fixedly connected to the middle position of the top of the housing, the air inlet is fixedly connected to the bottom end of one side of the housing, the fine ash discharge port is fixedly connected to the top of the other side of the housing, the coarse ash discharge port is fixedly connected to the bottom end of the housing, the rotary gate valve is connected to the inside of the coarse ash discharge port, and both the classification wheel and the centrifugal dispersion assembly are fixedly connected to the output shaft of the motor.
[0008] Preferably, the centrifugal dispersion assembly is composed of a dispersion disk body, a plurality of dispersion baffles, a guide ring, and a plurality of dispersion columns. The dispersion disk body is fixedly connected to the output shaft of the motor, the dispersion baffles are fixedly connected to the top of the dispersion disk body, the guide ring is fixedly connected to the side of the dispersion disk body, and the dispersion columns are fixedly connected to the top of the guide ring.
[0009] Preferably, the dispersion baffles are of a triangular structure and are arranged in a staggered manner.
[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0011] (1) During operation, by providing a fly ash storage tank, a screw feeder, a first eddy current classifier, a first centrifugal fan, a second eddy current classifier, a second centrifugal fan, a fine ash combined flow channel, a cyclone separator, a fine ash storage tank, a coarse ash elevator, and a coarse ash storage tank, it is possible to achieve the separation of fly ash, separating fine ash and coarse ash. The second eddy current classifier is used to perform secondary separation on the coarse ash, fully removing the fine ash mixed in the coarse ash, thereby improving the comprehensiveness of the separation. By providing a bag filter, it is possible to further filter the fine ash and prevent the fine ash from being discharged into the external air;
[0012] (2) By providing the first eddy current classifier and the second eddy current classifier composed of a housing, a feed inlet, an air inlet, a fine ash discharge port, a coarse ash discharge port, a motor, a classification wheel, a centrifugal dispersion assembly, and a rotary gate valve, eddy current classification can be achieved. By providing a centrifugal dispersion assembly composed of a dispersion disk body, a plurality of dispersion baffles, a guide ring, and a plurality of dispersion columns, during the separation process, the fly ash can be fully dispersed, thereby improving the comprehensiveness of the classification and effectively reducing the waste of fine ash caused by excessive fine ash in the coarse ash. Description of the Drawings
[0013] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model and do not constitute a limitation to the present utility model.
[0014] In the drawings:
[0015] Figure 1Schematic structural diagram of the high-stability boiler fly ash separation system of the present utility model;
[0016] Figure 2 Internal structural diagram of the first eddy current classifier of the present utility model;
[0017] Figure 3 Schematic connection structure diagram of the centrifugal dispersion component and the motor of the present utility model;
[0018] Figure 4 Side cross-sectional view of the centrifugal dispersion component of the present utility model;
[0019] Figure 5 Top view of the centrifugal dispersion component of the present utility model;
[0020] In the figure: 1. Fly ash storage tank; 2. Screw feeder; 3. First eddy current classifier; 4. First centrifugal fan; 5. Second eddy current classifier; 6. Second centrifugal fan; 7. Fine ash combined flow channel; 8. Cyclone separator; 9. Fine ash storage tank; 10. Coarse ash elevator; 11. Coarse ash storage tank; 12. Bag filter; 13. Air pipe; 14. Discharge pipe; 15. Shell; 16. Feed inlet; 17. Air inlet; 18. Fine ash discharge port; 19. Coarse ash discharge port; 20. Motor; 21. Classification wheel; 22. Centrifugal dispersion component; 23. Rotary gate valve; 24. Dispersion disk body; 25. Dispersion baffle; 26. Flow guiding ring; 27. Dispersion column. Specific implementation manners
[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments; based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0022] By Figure 1 and Figure 2Provided is a high-stability boiler fly ash separation system of the utility model, which comprises a fly ash storage tank 1, a screw feeder 2, a first eddy current classifier 3, a first centrifugal fan 4, a second eddy current classifier 5, a second centrifugal fan 6, a fine ash combined flow channel 7, a cyclone separator 8, a fine ash storage tank 9, a coarse ash elevator 10 and a coarse ash storage tank 11. The screw feeder 2 is connected between the fly ash storage tank 1 and the first eddy current classifier 3. The first centrifugal fan 4 is connected to the first eddy current classifier 3. The second eddy current classifier 5 is connected to the bottom end of the first eddy current classifier 3. The second centrifugal fan 6 is connected to the second eddy current classifier 5. The fine ash combined flow channel 7 is connected between the first eddy current classifier 3, the second eddy current classifier 5 and the cyclone separator 8. The fine ash storage tank 9 is connected to the bottom end of the cyclone separator 8. The coarse ash storage tank 11 is connected to the second eddy current classifier 5 through the coarse ash elevator 10. A bag filter 12 is arranged on one side of the cyclone separator 8. The bag filter 12 is connected to the cyclone separator 8 through an air pipe 13. The bag filter 12 is connected to the fine ash storage tank 9 through a discharge pipe 14;
[0023] The fly ash inside the fly ash storage tank 1 is conveyed to the inside of the first eddy current classifier 3 through the screw feeder 2. The classification operation is realized through the first eddy current classifier 3. The coarse ash is discharged to the second eddy current classifier 5, and the fine ash is discharged to the fine ash combined flow channel 7. The second eddy current classifier 5 is used to perform secondary classification on the coarse ash to effectively remove the fine ash in the coarse ash. The separated coarse ash is discharged to the coarse ash storage tank 11 through the coarse ash elevator 10. The fine ash combined flow channel 7 discharges the fine ash to the cyclone separator 8. The cyclone separator 8 is used to separate the fine ash from the air. The fine ash storage tank 9 is used to collect the fine ash. The bag filter 12 is used to perform secondary filtration on the discharged air to prevent the fine ash from being discharged mixed with the air;
[0024] by Figures 1 to 5Given that, both the first eddy current classifier - 3 and the second eddy current classifier - 5 are composed of a housing 15, a feed inlet 16, an air inlet 17, a fine ash discharge port 18, a coarse ash discharge port 19, a motor 20, a classification wheel 21, a centrifugal dispersion assembly 22, and a rotary gate valve 23. The feed inlet 16 is fixedly connected to one side of the top of the housing 15, the motor 20 is fixedly connected to the middle position of the top of the housing 15, the air inlet 17 is fixedly connected to the bottom end of one side of the housing 15, the fine ash discharge port 18 is fixedly connected to the top of the other side of the housing 15, the coarse ash discharge port 19 is fixedly connected to the bottom end of the housing 15, the rotary gate valve 23 is connected to the inside of the coarse ash discharge port 19, both the classification wheel 21 and the centrifugal dispersion assembly 22 are fixedly connected to the output shaft of the motor 20. The centrifugal dispersion assembly 22 is composed of a dispersion disk body 24, several dispersion baffles 25, a guide ring 26, and several dispersion columns 27. The dispersion disk body 24 is fixedly connected to the output shaft of the motor 20, the dispersion baffles 25 are fixedly connected to the top of the dispersion disk body 24, the guide ring 26 is fixedly connected to the side of the dispersion disk body 24, the dispersion columns 27 are fixedly connected to the top of the guide ring 26. The dispersion baffles 25 are of a triangular structure and are arranged in a staggered manner;
[0025] When the first eddy current classifier - 3 and the second eddy current classifier - 5 are working, the motor 20 drives the classification wheel 21 and the centrifugal dispersion assembly 22 to rotate. Through the centrifugal dispersion assembly 22, the fly ash is fully dispersed. The fine ash is discharged through the fine ash discharge port 18 by the upward force of the air flow, and the coarse ash is discharged along the coarse ash discharge port 19 under the action of gravity. The rotary gate valve 23 can prevent the air flow from discharging along the coarse ash discharge port 19. Through the arrangement of the dispersion disk body 24, several dispersion baffles 25, the guide ring 26, and several dispersion columns 27, the comprehensiveness of the dispersion of the fly ash can be improved, thereby improving the classification effect and reducing the content of fine ash in the coarse ash.
[0026] During the operation, by setting up a fly ash storage tank, a screw feeder, the first eddy current classifier, the first centrifugal fan, the second eddy current classifier, the second centrifugal fan, a fine ash combined flow channel, a cyclone separator, a fine ash storage tank, a coarse ash elevator, and a coarse ash storage tank, the separation of fly ash can be realized, so that the fine ash and the coarse ash are separated. Through the second eddy current classifier, the secondary separation of the coarse ash is realized, and the fine ash doped in the coarse ash is fully removed, thereby improving the comprehensiveness of the separation. By setting up a bag filter, the fine ash can be further filtered to prevent the fine ash from being discharged into the external air; by setting up the first eddy current classifier and the second eddy current classifier composed of a housing, a feed inlet, an air inlet, a fine ash discharge port, a coarse ash discharge port, a motor, a classification wheel, a centrifugal dispersion assembly, and a rotary gate valve, the eddy current classification can be realized. By setting up a centrifugal dispersion assembly composed of a dispersion disk body, several dispersion baffles, a guide ring, and several dispersion columns, during the separation process, the fly ash can be fully dispersed, thereby improving the comprehensiveness of the classification and effectively reducing the waste of fine ash caused by excessive fine ash in the coarse ash.
Claims
1. A high-stability boiler fly ash sorting system, comprising a fly ash storage tank (1), a screw feeder (2), a vortex classifier (3), a centrifugal fan (4), a vortex classifier (5), a centrifugal fan (6), a fine ash combined flow channel (7), a cyclone separator (8), a fine ash storage tank (9), a coarse ash elevator (10) and a coarse ash storage tank (11), characterized in that: The screw feeder (2) is connected between the fly ash storage tank (1) and the eddy current classifier (3), the centrifugal fan (4) is connected to the eddy current classifier (3), the eddy current classifier (5) is connected to the bottom end of the eddy current classifier (3), the centrifugal fan (6) is connected to the eddy current classifier (5), the fine ash combined flow channel (7) is connected between the eddy current classifier (3), the eddy current classifier (5) and the cyclone separator (8), the fine ash storage tank (9) is connected to the bottom end of the cyclone separator (8), and the coarse ash storage tank (11) is connected to the eddy current classifier (5) through the coarse ash elevator (10).
2. A high-stability boiler fly ash sorting system according to claim 1, characterized in that: A bag dust collector (12) is provided on one side of the cyclone separator (8). The bag dust collector (12) is connected to the cyclone separator (8) via an air pipe (13). The bag dust collector (12) is connected to the fine ash storage tank (9) via a discharge pipe (14).
3. A high-stability boiler fly ash sorting system according to claim 1, characterized in that: The eddy current classifier 1 (3) and the eddy current classifier 2 (5) are both composed of a shell (15), a feed port (16), an air inlet (17), a fine ash discharge port (18), a coarse ash discharge port (19), a motor (20), a classifying wheel (21), a centrifugal dispersion component (22) and a rotary gate valve (23); the feed port (16) is fixedly connected to one side of the top of the shell (15); the motor (20) is fixedly connected to the middle position of the top of the shell (15); the air inlet (17) is fixedly connected to the bottom end of one side of the shell (15); the fine ash discharge port (18) is fixedly connected to the top of the other side of the shell (15); the coarse ash discharge port (19) is fixedly connected to the bottom end of the shell (15); the rotary gate valve (23) is connected to the inside of the coarse ash discharge port (19); and the classifying wheel (21) and the centrifugal dispersion component (22) are both fixedly connected to the output shaft of the motor (20).
4. A high-stability boiler fly ash sorting system according to claim 3, characterized in that: The centrifugal dispersion assembly (22) is composed of a dispersion disc body (24), a plurality of dispersion baffles (25), a guide ring (26) and a plurality of dispersion columns (27); the dispersion disc body (24) is fixedly connected to the output shaft of the motor (20); the dispersion baffle (25) is fixedly connected to the top of the dispersion disc body (24); the guide ring (26) is fixedly connected to the side of the dispersion disc body (24); and the dispersion column (27) is fixedly connected to the top of the guide ring (26).
5. A high-stability boiler fly ash sorting system according to claim 4, characterized in that: The dispersion baffles (25) are of a triangular structure, and the dispersion baffles (25) are of a staggered arrangement structure.