Fine coal grading and sorting device
By designing a fine-grained coal sizing device and using a combination of vibrating screen and secondary sorting components, the problem of poor separation and sorting effects during fine-grained coal is solved, and efficient fine-grained coal sorting and reducing air pollution are achieved.
Patent Information
- Application Number
- CN202421415302.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-06-20
AI Technical Summary
The prior art can easily cause drifting when sorting fine-grained coal, causing air pollution, and poor sorting effect, resulting in some fine-grained coal being not effectively sorted.
A fine-grained coal sizing device is designed, using a combination of vibrating screen and secondary sorting components to separate coarse-grained coal and medium-grained coal through vibrating screen, and further sorting fine-grained coal through secondary sorting components, combining suction components and rotary protective cover to prevent fine-grained coal from floating.
It effectively improves the sorting effect of fine-grained coal, reduces air pollution, and improves the collection efficiency of fine-grained coal.
Smart Images
Figure CN222817299U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of coal equipment, in particular to a fine-grained coal classification and sorting device. Background Art
[0002] Fine coal refers to coal with a smaller particle size, usually coal particles with a particle size smaller than a certain size. In the coal industry, the definition of fine coal may vary depending on national and regional standards, but in general, fine coal refers to coal particles with a particle size of less than 0.5 mm (500 microns). Due to their small particle size, these particles usually have a higher surface area and surface activity, which allows them to release heat faster when burned.
[0003] Coal of different particle sizes is suitable for different purposes. For example, fine-grained coal may be more suitable for pulverized coal combustion in power plants, while coarse-grained coal may be more suitable for coking or as an industrial raw material. Grading and sorting help optimize the use of coal. To screen fine-grained coal, you first need to remove impurities from the coal, then put the coal into a crushing mechanism to break the coal into coal blocks of different sizes, and then pour these coal blocks into a screening mechanism for screening. The mesh holes inside the screening mechanism should be less than 0.5mm to screen out the fine-grained coal.
[0004] However, due to the small particle size of fine coal, when some vibrating screening mechanisms screen the fine coal, the fine coal is easy to float away, causing air pollution and affecting the breathing of workers. In addition, some sorting devices can only sort the coal blocks once, resulting in some fine coal not being sorted out, resulting in poor sorting effect. Therefore, a fine coal grading and sorting device is proposed to solve the above problems. Utility Model Content
[0005] In order to make up for the above shortcomings, the utility model provides a fine coal classification and sorting device, which aims to improve the problems of air pollution caused by the dispersion of fine coal during sorting and poor fine coal sorting effect in the prior art.
[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a fine-grained coal grading and sorting device, including a base, a screw dragon is fixedly connected to the top left end of the base, a feed hopper is fixedly connected to the left bottom end of the screw dragon, a coal discharging frame is fixedly connected to the right top end of the screw dragon, a sorting box is fixedly connected to the top of the base and the right end of the screw dragon, a feed port is opened on the left side of the top of the sorting box, a protective cover is rotatably connected to the top right side of the feed port, the protective cover wraps the coal discharging frame, the right bottom end of the coal discharging frame is located in the middle of the feed port, a vibrating screen is fixedly connected to the middle and upper end of the interior of the sorting box, a guide plate is fixedly connected to the rear right side of the top of the vibrating screen, and the sorting box The right end is fixedly connected with a coarse-grained coal discharging frame at the right front end of the guide plate one, the interior of the sorting box is fixedly connected with a vibrating screen two at the bottom end of the vibrating screen one, the top right front side of the vibrating screen two is fixedly connected with a guide plate two, the right end of the sorting box is fixedly connected with a medium-grained coal discharging frame at the right rear end of the guide plate two, a discharging port one is provided at the right end of the bottom, a large guide plate and a small guide plate are respectively fixedly connected at the left and right sides of the discharging port one at the inner bottom end of the sorting box, a suction assembly is provided at the middle right part of the top of the sorting box, a secondary sorting assembly is provided at the right end of the sorting box, the left end of the secondary sorting assembly is located inside the auger, the right ends of the coarse-grained coal discharging frame and the medium-grained coal discharging frame both pass through the left end of the secondary sorting assembly.
[0007] As a further description of the above technical solution: the suction component includes a centrifugal pump 1, which is fixedly connected to the top of the sorting box, the input end of the centrifugal pump 1 is fixedly connected to a grain feeding pipe 1, the end of the grain feeding pipe 1 passes through the top of the sorting box and is fixedly connected to a grain suction bucket, and the output end of the centrifugal pump 1 is fixedly connected to a grain transport pipe 1.
[0008] As a further description of the above technical solution: the end of the first particle conveying pipe passes through the front end of the sorting box and is located at the top of the first discharge port.
[0009] As a further description of the above technical solution: the secondary sorting component includes a check-selection box, the left end of the check-selection box is fixedly connected to the right end of the sorting box, and two discharge ports are provided in the middle and lower parts of the front and rear ends of the check-selection box, and the tops of the two discharge ports are rotatably connected to one end away from each other with a revolving door, the front and rear ends of the check-selection box are fixedly connected to two centrifugal pumps at the top of the two discharge ports, the input ends of the two centrifugal pumps are fixedly connected to two grain feeding pipes, and the output ends of the two centrifugal pumps are fixedly connected to two grain delivery pipes, a partition is fixedly connected to the middle part of the inner side of the check-selection box, and guide plates three are fixedly connected to the middle and lower parts of the front and rear sides of the partition.
[0010] As a further description of the above technical solution: the coarse coal discharging frame and the medium coal discharging frame both pass through the left end of the check box, and the right ends of the coarse coal discharging frame and the medium coal discharging frame are respectively located at the front and rear ends of the partition.
[0011] As a further description of the above technical solution: the ends of the second grain inlet pipe are respectively located at the front and rear ends of the partition, and the ends of the second grain transport pipe respectively penetrate the front and rear ends of the auger and are located inside the auger.
[0012] As a further description of the above technical solution: the ends of the two guide plates three are respectively fixedly connected to the bottom of the opposite end of the discharge port two.
[0013] As a further description of the above technical solution: the vibration screen 1 and the vibration screen 2 are both inclined from left to right, the mesh of the vibration screen 1 is larger than the mesh of the vibration screen 2, and the mesh diameter of the vibration screen 2 is 500 microns.
[0014] The utility model has the following beneficial effects:
[0015] 1. In the utility model, the revolving door is closed, and the coarse coal passes through the coarse coal discharging frame through the vibrating screen 1 and enters the front end part of the internal partition of the reselection box, while the medium coal passes through the vibrating screen 1 and falls on the vibrating screen 2, passes through the medium coal discharging frame and falls into the rear end of the internal partition of the reselection box, and then the coarse coal and the medium coal enter the interior of the auger through two centrifugal pumps 2, and enter the interior of the separation box again through the auger, until the fine coal mixed in the coarse coal and the medium coal is separated and flows out through the discharging port 1, and the revolving door is opened, so that the coarse coal and the medium coal flow out through the discharging port 2 on the same side respectively, thereby improving the separation effect of the fine coal.
[0016] 2. In the utility model, the coal discharging frame is wrapped by a rotating protective cover, and the outer wall of the coal discharging frame is fitted with the inner wall of the protective cover to prevent fine coal from floating out of the sorting box during the sorting process and causing air pollution. The centrifugal pump sucks the fine coal scattered inside the sorting box during the sorting through the particle suction hopper and the particle inlet pipe, and then flows out through the particle delivery pipe and the discharge port for collection, thereby accelerating the fine coal collection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a three-dimensional schematic diagram of a fine-grained coal classification and sorting device proposed by the utility model;
[0018] Figure 2 This is an overall disassembled diagram of a fine-grained coal classification and sorting device proposed by the utility model;
[0019] Figure 3 This is a front cross-sectional view of a separation box of a fine-grained coal classification and separation device proposed in the utility model;
[0020] Figure 4This is a right side cross-sectional view of a check box of a fine-grained coal grading and sorting device proposed in the utility model.
[0021] Legend:
[0022] 1. Base; 2. Auger; 3. Feed hopper; 4. Coal discharge frame; 5. Sorting box; 6. Feed port; 7. Protective cover; 8. Vibrating screen one; 9. Guide plate one; 10. Coarse coal discharge frame; 11. Vibrating screen two; 12. Guide plate two; 13. Medium coal discharge frame; 14. Large guide plate; 15. Small guide plate; 16. Discharge port one; 17. Centrifugal pump one; 18. Grain feed pipe one; 19. Grain suction hopper; 20. Grain delivery pipe one; 21. Check box; 22. Partition; 23. Guide plate three; 24. Discharge port two; 25. Revolving door; 26. Centrifugal pump two; 27. Grain feed pipe two; 28. Grain delivery pipe two. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] Reference Figure 1-Figure 3 The utility model provides an embodiment of a fine-grained coal grading and sorting device, comprising a base 1, a screw dragon 2 is fixedly connected to the left end of the top of the base 1, a feed hopper 3 is fixedly connected to the bottom of the left end of the screw dragon 2, a coal discharge frame 4 is fixedly connected to the top of the right end of the screw dragon 2, a sorting box 5 is fixedly connected to the top of the base 1 and the right end of the screw dragon 2, a feed port 6 is opened on the left side of the top of the sorting box 5, a protective cover 7 is rotatably connected to the top right side of the feed port 6, the protective cover 7 wraps the coal discharge frame 4, the bottom right end of the coal discharge frame 4 is located in the middle of the feed port 6, a vibrating screen 8 is fixedly connected to the middle and upper end of the inside of the sorting box 5, a guide plate 9 is fixedly connected to the rear right side of the top of the vibrating screen 8, and the right end of the sorting box 5 is at the right front end of the guide plate 9 A coarse-grained coal discharging frame 10 is fixedly connected, a vibrating screen 11 is fixedly connected to the bottom end of the vibrating screen 1 8 inside the sorting box 5, a guide plate 12 is fixedly connected to the front side of the top right part of the vibrating screen 11, a medium-grained coal discharging frame 13 is fixedly connected to the right end of the guide plate 12 at the right end of the sorting box 5, a discharging port 16 is opened at the right end of the bottom of the sorting box 5, a large guide plate 14 and a small guide plate 15 are respectively fixedly connected to the left and right sides of the discharging port 16 at the inner bottom of the sorting box 5, a suction assembly is provided at the middle right part of the top of the sorting box 5, a secondary sorting assembly is provided at the right end of the sorting box 5, the left end of the secondary sorting assembly is located inside the auger 2, and the right ends of the coarse-grained coal discharging frame 10 and the medium-grained coal discharging frame 13 both pass through the left end of the secondary sorting assembly.
[0025] The crushed coal is poured into the feed hopper 3, and then the auger 2 drives the coal through the coal discharge frame 4 into the sorting box 5. The vibrating screen 8 makes the coarse coal move to the coarse coal discharge frame 10 under the action of the guide plate 9, and enters the inner front end of the secondary sorting component through the coarse coal discharge frame 10, and then enters the interior of the auger 2 through the secondary sorting component. Through the auger 2, the coarse coal enters the sorting box 5 again for sorting until the fine coal mixed in the coarse coal is sorted out, and the medium coal falls on the vibrating screen 11 through the vibrating screen 8. , under the action of the second guide plate 12, the medium-particle coal passes through the medium-particle coal discharge frame 13 and falls into the rear end of the secondary re-selection component, and then enters the interior of the auger 2 through the secondary sorting component, and enters the interior of the sorting box 5 again through the auger 2, until the vibrating screen 11 sorts out the fine-particle coal mixed in the medium-particle coal, and flows out through the discharge port 16 under the action of the large guide plate 14 and the small guide plate 15, thereby improving the fine-particle coal sorting effect, and the protective cover 7 and the suction component cooperate with each other, so that during the sorting process, the fine-particle coal cannot float out of the polluted air through the feed port 6.
[0026] Reference Figure 2 The suction component includes a centrifugal pump 17, which is fixedly connected to the top of the sorting box 5. The input end of the centrifugal pump 17 is fixedly connected to a grain feeding pipe 18, the end of the grain feeding pipe 18 passes through the top of the sorting box 5 and is fixedly connected to a grain suction bucket 19, and the output end of the centrifugal pump 17 is fixedly connected to a grain conveying pipe 20, the end of the grain conveying pipe 20 passes through the front end of the sorting box 5 and is located at the top of the discharge port 16.
[0027] The centrifugal pump 17 sucks the fine coal particles scattered inside the sorting box 5 during sorting through the particle suction hopper 19 and the particle inlet pipe 18, and then flows out through the particle delivery pipe 20 and the discharge port 16 for collection, thereby accelerating the collection efficiency of the fine coal particles.
[0028] Reference Figure 1 , Figure 3 and Figure 4The secondary sorting component includes a check box 21, the left end of the check box 21 is fixedly connected to the right end of the sorting box 5, and a discharge port 24 is provided at the middle and lower parts of the front and rear ends of the check box 21. The tops of the two discharge ports 24 are rotatably connected to a revolving door 25. The front and rear ends of the check box 21 are fixedly connected to the tops of the discharge ports 24 with centrifugal pumps 26, and the input ends of the two centrifugal pumps 26 are fixedly connected to the grain feeding pipes 27, and the output ends of the centrifugal pumps 26 are fixedly connected to the grain delivery pipes 28. The middle part of the inner side of the check box 21 is fixedly connected to the A partition 22 is fixedly connected, and guide plates three 23 are fixedly connected to the middle and lower parts of the front and rear sides of the partition 22. The coarse coal discharge frame 10 and the medium coal discharge frame 13 both pass through the left end of the check box 21, and the right ends of the coarse coal discharge frame 10 and the medium coal discharge frame 13 are respectively located at the front and rear ends of the partition 22, the ends of the particle inlet pipe two 27 are respectively located at the front and rear ends of the partition 22, the ends of the particle conveying pipe two 28 respectively pass through the front and rear ends of the auger 2 and are located inside the auger 2, and the ends of the two guide plates three 23 are respectively fixedly connected to the bottom of the opposite end of the discharge port two 24.
[0029] When the revolving door 25 is closed, the coarse-grained coal enters the front end part of the internal partition 22 of the check-box 21 through the coarse-grained coal discharge frame 10, is sucked into the front particle inlet pipe 27 through the front centrifugal pump 26, and then enters the interior of the auger 2 through the front particle delivery pipe 28, while the medium-grained coal falls into the rear end of the internal partition 22 of the check-box 21 through the medium-grained coal discharge frame 13, and then enters the interior of the auger 2 through the rear centrifugal pump 26. When the revolving door 25 is opened, the coarse-grained coal flows out through the front discharge port 24 for collection, while the medium-grained coal flows out through the rear discharge port 24 for collection.
[0030] Reference Figure 3 The vibration screen 1 8 and the vibration screen 2 11 are both inclined from left to right. The mesh of the vibration screen 1 8 is larger than the mesh of the vibration screen 2 11. The mesh diameter of the vibration screen 2 11 is 500 microns.
[0031] The mesh holes of the vibrating screen 8 are larger than those of the vibrating screen 11, which is convenient for grading and sorting the coal. The mesh holes of the vibrating screen 11 have a diameter of 500 microns so that the fine coal particles screened out meet the standards.
[0032] Working principle: Close the revolving door 25, pour the crushed coal into the feed hopper 3, then the auger 2 drives the coal through the coal discharge frame 4 into the sorting box 5, the vibrating screen 8 makes the coarse coal move to the coarse coal discharge frame 10 under the action of the guide plate 9, and enter the front end of the internal partition 22 of the check box 21 through the coarse coal discharge frame 10, the medium coal passes through the vibrating screen 8 and falls on the vibrating screen 2 11, and under the action of the guide plate 2 12, it passes through the medium coal discharge frame 13 and falls into the rear end of the internal partition 22 of the check box 21, and then the coarse coal and the medium coal enter the auger through the two centrifugal pumps 26. 2, and enters the separation box 5 again through the auger 2 until the fine coal mixed with the coarse coal and the medium coal is separated, and flows out through the discharge port 16 under the action of the large guide plate 14 and the small guide plate 15. The protective cover 7 prevents the fine coal from floating out of the separation box 5 during the separation process, and the centrifugal pump 17 transports the fine coal scattered in the separation box 5 during the separation to the top of the discharge port 16 through the particle conveying pipe 20. When the fine coal is separated, the revolving door 25 is opened to allow the coarse coal to flow out through the front discharge port 24 for collection, and the medium coal to flow out through the rear discharge port 24 for collection.
[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A fine coal classification and sorting device, comprising a base (1), characterized in that: The left end of the top of the base (1) is fixedly connected to an auger (2), the bottom of the left end of the auger (2) is fixedly connected to a feed hopper (3), the top of the right end of the auger (2) is fixedly connected to a coal discharge frame (4), the top of the base (1) is fixedly connected to the right end of the auger (2) with a sorting box (5), the left side of the top of the sorting box (5) is provided with a feed port (6), the top of the right side of the feed port (6) is rotatably connected to a protective cover (7), the protective cover (7) wraps the coal discharge frame (4), the bottom of the right end of the coal discharge frame (4) is located in the middle of the feed port (6), the middle and upper end of the interior of the sorting box (5) is fixedly connected to a vibrating screen (8), the rear right side of the top of the vibrating screen (8) is fixedly connected to a guide plate (9), and the right end of the sorting box (5) is fixedly connected to a coarse coal discharge frame at the front right side of the guide plate (9). (10), a vibrating screen 2 (11) is fixedly connected to the bottom end of the vibrating screen 1 (8) inside the separation box (5), a guide plate 2 (12) is fixedly connected to the front right side of the top end of the vibrating screen 2 (11), a medium-grained coal discharge frame (13) is fixedly connected to the right rear end of the guide plate 2 (12) at the right end of the separation box (5), a discharge port 1 (16) is opened at the right end of the bottom of the separation box (5), a large guide plate (14) and a small guide plate (15) are fixedly connected to the left and right sides of the discharge port 1 (16) at the bottom end of the separation box (5), a suction assembly is arranged at the middle right part of the top end of the separation box (5), a secondary separation assembly is arranged at the right end of the separation box (5), the left end of the secondary separation assembly is located inside the auger (2), and the right ends of the coarse-grained coal discharge frame (10) and the medium-grained coal discharge frame (13) both pass through the left end of the secondary separation assembly.
2. A fine coal classification and sorting device according to claim 1, characterized in that: The suction assembly comprises a centrifugal pump (17), the centrifugal pump (17) is fixedly connected to the top of the sorting box (5), the input end of the centrifugal pump (17) is fixedly connected to a grain feeding pipe (18), the end of the grain feeding pipe (18) passes through the top of the sorting box (5) and is fixedly connected to a grain suction bucket (19), and the output end of the centrifugal pump (17) is fixedly connected to a grain delivery pipe (20).
3. A fine coal classification and sorting device according to claim 2, characterized in that: The end of the pellet conveying pipe 1 (20) passes through the front end of the sorting box (5) and is located at the top end of the discharge port 1 (16).
4. The fine coal classification and sorting device according to claim 1, characterized in that: The secondary sorting component comprises a check box (21), the left end of the check box (21) is fixedly connected to the right end of the sorting box (5), the middle and lower parts of the front and rear ends of the check box (21) are each provided with a discharge port (24), the tops of the two discharge ports (24) are rotatably connected to one end away from each other, the front and rear ends of the check box (21) are each fixedly connected to a centrifugal pump (26) at the top of the discharge port (24), the input ends of the two centrifugal pumps (26) are each fixedly connected to a grain feeding pipe (27), the output ends of the two centrifugal pumps (26) are each fixedly connected to a grain conveying pipe (28), the middle part of the inner side of the check box (21) is fixedly connected to a partition (22), and the middle and lower parts of the front and rear sides of the partition (22) are each fixedly connected to a guide plate (23).
5. The fine coal classification and sorting device according to claim 4, characterized in that: The coarse coal discharging frame (10) and the medium coal discharging frame (13) both pass through the left end of the check box (21), and the right ends of the coarse coal discharging frame (10) and the medium coal discharging frame (13) are respectively located at the front and rear ends of the partition (22).
6. The fine coal classification and sorting device according to claim 4, characterized in that: The ends of the second grain inlet pipe (27) are respectively located at the front and rear ends of the partition (22), and the ends of the second grain delivery pipe (28) respectively penetrate the front and rear ends of the auger (2) and are located inside the auger (2).
7. The fine coal classification and sorting device according to claim 4, characterized in that: The ends of the two guide plates three (23) are respectively fixedly connected to the bottom of the opposite end of the discharge port two (24).
8. The fine coal classification and sorting device according to claim 1, characterized in that: The vibration screen 1 (8) and the vibration screen 2 (11) are both inclined from left to right. The mesh of the vibration screen 1 (8) is larger than the mesh of the vibration screen 2 (11). The mesh diameter of the vibration screen 2 (11) is 500 microns.