Classification screening device for coal processing

Abstract

The invention discloses a classifying and screening device for coal processing, and belongs to the technical field of coal processing. The device comprises a mounting base, a classification box and a discharging frame with an opening in the top. The mounting seat is connected with the classification box through a spring support; the discharging frame is located under the classification box. A plurality of connecting holes are symmetrically formed in the side walls of the two sides of the bottom of the classifying box, a plurality of connecting rods are sequentially installed between the connecting holes in the two sides, the outer walls of the connecting rods are sleeved with rollers, gaps exist between the connecting rods, and the gaps are gradually increased along with the downward gradient of the bottom face of the classifying box; filtering ventilation structures are arranged on the side walls of the two sides of the classification box, a fan is fixedly connected to the exterior of the filtering ventilation structure on the side wall of one side of the classification box, and a water tank is connected to the exterior of the filtering ventilation structure on the side wall of the other side through a telescopic pipe; the problems that in the coal briquette screening process, dust on the surfaces of coal briquettes is not easy to remove, and the particle size interval of coal briquette screening is not easy to adjust are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of coal processing and relates to a coal processing classification and screening device. Background Art

[0002] Coal processing, classification and screening devices are key equipment in coal processing, and are mainly used to screen and grade coal according to different particle sizes. This type of device mostly adopts a shaftless drum screen design, and its working principle is to separate coal and other materials into different particle sizes through the rotation of the drum and the vibration of the screen, so as to achieve efficient screening; in addition, there is also a design that uses a vibrating screening plate, and the size of the screening holes in the screening plate is adjusted to meet the screening needs of coal of different specifications.

[0003] However, the types of processing, classification and screening devices currently used cannot quickly clean the dust adhering to the surface of the coal while screening, cannot suppress the dust of the coal, and cannot flexibly adjust the particle size range of the coal block screening according to needs. Summary of the invention

[0004] The present invention overcomes the shortcomings of the prior art and proposes a coal processing classification and screening device; the present invention is achieved through the following technical solutions: A coal processing classification and screening device comprises a mounting seat, a classification box and a material discharging frame with an open top; the mounting seat is connected to the classification box through a spring support; the material discharging frame is installed on the upper part of the mounting seat, and the material discharging frame is located directly below the classification box; the classification box is connected to a vibration motor; the front end of the classification box is a material feeding port, and the direction of the classification box from the material feeding port to the rear end thereof is a downwardly inclined structure; A plurality of connection holes are symmetrically opened on the side walls on both sides of the bottom of the classification box, and a plurality of connection rods are sequentially installed between the connection holes on both sides. The outer wall of the connection rod is sleeved with a roller. There are gaps between the plurality of connection rods, and the gaps gradually increase with the downward slope of the bottom surface of the classification box. Both side walls of the classification box are provided with filtering and ventilation structures, and the filtering and ventilation structure on one side wall of the classification box is externally fixedly connected with a fan, and the filtering and ventilation structure on the other side wall is externally connected with the water tank through a telescopic pipe; A plurality of retractable partition plates are detachably connected in the material discharging frame, and the interior of the material discharging frame is divided into a plurality of areas along the direction from one end of the material inlet of the classification box to the rear end of the classification box by the partition plates.

[0005] Furthermore, springs are welded at the four corners of the upper surface of the mounting seat, and the top ends of the springs are welded at the four corners of the bottom of the classification box; the front and rear bottom surfaces of the classification box are fixedly connected with limiting columns, and the bottom ends of the limiting columns are slidably connected to the mounting seat.

[0006] Furthermore, the upper end of the classification box is fixedly connected to a vibration motor via a positioning rod.

[0007] Furthermore, both ends of the connecting rod are fixedly connected with fixing sleeves, the connecting rod and the fixing sleeves are threadedly connected, and the connecting rod and the classification box are fixed by the fixing sleeves.

[0008] Furthermore, the side walls of the discharge frame are symmetrically provided with slots, the two ends of the partition plate extend out of the slots respectively and are fixedly connected with positioning sleeves, and the upper part of the partition plate is slidably connected with a lifting sleeve; the partition plate is snap-fitted and connected with the lifting sleeve.

[0009] Furthermore, the filtering and ventilation structure includes a first magnetic ring, a second magnetic ring and a mesh frame; the side walls of the classification box are frame structures and are both bonded with the first magnetic ring, the second magnetic ring is attached to one side of the first magnetic ring, and the mesh frame is bonded to one side of the second magnetic ring.

[0010] Furthermore, a fixing frame is fixedly connected to the outside of one side wall of the classification box, and a fan is fixedly connected to the outer wall of the fixing frame.

[0011] Furthermore, the bottom of the water tank is a downwardly inclined structure, a plugging sleeve is fixedly connected to the lowest point of the water tank, the water tank and the plugging sleeve are threadedly connected, an exhaust port is arranged on the upper part of the water tank, and a filter screen is arranged at the exhaust port.

[0012] The beneficial effects of the present invention compared with the prior art are as follows: 1. Use a classification box, connecting rod, fixed sleeve and roller. The opening on the inner wall of the classification box is tightly engaged with the connecting rod. When the screening size of large and small coal blocks needs to be adjusted, the connecting rod can be driven to move within a certain range through an external adjustment device. The movement of the connecting rod will change the position of the fixed sleeve and roller connected to it, thereby adjusting the screening gap. The classification box provides support and framework for the entire screening system, and the opening on the inner wall ensures the stable installation of the connecting rod. The fixed sleeve on the connecting rod fixes the roller, and the spacing of the roller determines the size of the coal blocks that can pass. When the coal blocks enter the classification box, they fall from the rollers with different gaps according to their sizes to achieve classification and screening. The fixed rod and fan are used. The vibration motor is installed at a specific position of the device through the fixed rod. The vibration generated by the vibration motor is transmitted to the coal blocks, loosening the dust attached to the coal blocks. At the same time, the vibration motor drives the fan to rotate, and the airflow generated by the fan blows the loose dust off the surface of the coal blocks. This can effectively reduce the dust pollution of coal blocks during transportation and screening.

[0013] 2. Use a water tank and a plugging sleeve. The water inside the water tank can adhere the dust on the coal blocks and suppress the dust. At the same time, the water tank is tilted to quickly treat the internal sewage. Use a discharge frame, a partition plate, a positioning sleeve and a lifting sleeve. The water tank is connected to the discharge frame through the plugging sleeve. When the screened coal blocks fall into the discharge frame, the water in the water tank can adhere to the dust on the coal blocks and suppress the dust. At the same time, the partition plate in the discharge frame can be adjusted according to demand to further classify coal blocks of different sizes. Larger coal blocks fall on one side of the partition plate, and smaller coal blocks fall on the other side, which is convenient for subsequent processing and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of the classification and screening device of the present invention; Figure 2 It is a schematic diagram of the vertical cross-sectional structure of the classification and screening device of the present invention; Figure 3 It is a structural schematic diagram of the classification box, the first magnetic ring, the second magnetic ring and the screen frame of the classification and screening device of the present invention; Figure 4 It is a structural schematic diagram of the material discharging frame; Figure 5 It is a schematic diagram of the connection structure of the partition plate, the positioning sleeve and the lifting sleeve; Figure 6 for Figure 3 A schematic diagram of the enlarged structure of the middle part A; In the figure: 1. Mounting seat; 2. Spring; 3. Classification box; 4. Positioning rod; 5. Vibration motor; 6. Connecting rod; 7. Fixed sleeve; 8. Roller; 9. Fixed frame; 10. Fan; 11. First magnetic ring; 12. Second magnetic ring; 13. Screen frame; 14. Telescopic tube; 15. Water tank; 16. Blocking sleeve; 17. Discharge frame; 18. Partition plate; 19. Positioning sleeve; 20. Lifting sleeve; 21. Connecting hole; 22. Limiting column. DETAILED DESCRIPTION

[0015] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail in conjunction with the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. The technical solutions of the present invention are described in detail below in conjunction with the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.

[0016] See also Figures 1 to 6The present embodiment provides a coal processing classification and screening device, comprising a mounting seat 1, a classification box 3 and a discharge frame 17 with an open top; springs 2 are welded at the four corners of the upper surface of the mounting seat 1, and the tops of the springs 2 are welded at the four corners of the bottom of the classification box 3; the front and rear bottom surfaces of the classification box 3 are fixedly connected to limit posts 22, and the bottom ends of the limit posts 22 are slidably connected to the mounting seat 1. The discharge frame 17 is installed on the upper part of the mounting seat 1, and the discharge frame 17 is located directly below the classification box 3.

[0017] The front end of the classification box 3 is a feed port, and the upper end of the classification box 3 is fixedly connected to a vibration motor 5 through a positioning rod 4. Under the action of the vibration motor 5, the classification box 3 as a whole will vibrate, and the classification box 3 is in a downward tilted state from its feed port to its rear end, so that the vibration can be combined with the gravity of the coal blocks to achieve sufficient classification and screening.

[0018] A plurality of connecting holes 21 are symmetrically provided on the side walls of the bottom of the classification box 3. A plurality of connecting rods 6 are sequentially installed between the connecting holes 21 on both sides. The two ends of the connecting rods 6 are fixedly connected with fixing sleeves 7. The connecting rods 6 are threadedly connected with the fixing sleeves 7, and the fixing sleeves 7 are symmetrically arranged with the central axis of the connecting rods 6. The connecting rods 6 are fixed to the classification box 3 by the fixing sleeves 7. The outer wall of the connecting rods 6 is sleeved with rollers 8, and the rollers 8 can rotate relative to the connecting rods 6. There are gaps between the plurality of connecting rods 6, and the gaps gradually increase with the downward slope of the bottom surface of the classification box 3. When the classification box 3 vibrates, the coal blocks above the rollers 8 also vibrate. The coal blocks at the feed port of the classification box 3, because the gaps between the connecting rods 6 are small, the coal with small particle size first falls into the discharge frame 17 below. The coal blocks roll downward along the inclined classification box 3 under the action of gravity, and then the coal blocks are screened uniformly according to the particle size distribution from small to large according to the gradual increase of the gaps. Of course, it is understandable that the device can adjust the spacing between the connecting rods 6 according to actual production needs to obtain coal blocks with corresponding particle sizes.

[0019] In order to store the coal blocks entering the discharge frame 17 separately; a plurality of partition plates 18 are adjustably connected in the discharge frame 17; specifically, the side walls of the discharge frame 17 are slotted in design, and both ends of the partition plates 18 are fixedly connected with positioning sleeves 19, and a lifting sleeve 20 is installed on the upper part of the partition plate 18; the partition plate 18 is snap-fitted and connected with the lifting sleeve 20, and the thickness of the partition plate 18 is less than the inner diameter of the lifting sleeve 20; it is ensured that the lifting sleeve 20 can slide up and down along the outer wall of the partition plate 18, and when it slides to the appropriate position, the lifting sleeve 20 is fixed relative to the partition plate 18 by the snap-fit ​​part; this is because the discharge frame 17 is located at the bottom of the classification box 3, and the discharge frame 17 tends to be higher in the front and lower in the back. Through the cooperation of the lifting sleeve 20 and the partition plate 18, it can be ensured that the inside of the discharge frame 17 is separated.

[0020] Both side walls of the classification box 3 are provided with a filtering and ventilation structure, which includes a first magnetic ring 11, a second magnetic ring 12 and a mesh frame 13; both side walls of the classification box 3 are frame structures and are bonded with the first magnetic ring 11, one side of the first magnetic ring 11 is bonded with the second magnetic ring 12, and one side of the second magnetic ring 12 is bonded with the mesh frame 13; the outer wall of the first magnetic ring 11 is tightly fitted with the inner wall of the classification box 3, and the outer wall of the second magnetic ring 12 is tightly fitted with the outer wall of the mesh frame 13. Through the first magnetic ring 11 and the second magnetic ring 12, the mesh frame 13 is adsorbed on the side walls of the classification box 3, which can achieve ventilation and filtering while also facilitating disassembly and cleaning.

[0021] A fixed frame 9 is fixedly connected to the outside of one side wall of the classification box 3, and a fan 10 is fixedly connected to the outer wall of the fixed frame 9. A telescopic pipe 14 is welded to the outside of the other side wall of the classification box 3, and the inlet of the telescopic pipe 14 is located at the net frame 13 on this side. The inlet of the telescopic pipe 14 covers the net frame 13 on this side, so that the air containing dust blown out from the classification box 3 enters the telescopic pipe 14. The bottom outlet of the telescopic pipe 14 is connected to a water tank 15. The bottom of the water tank 15 is a downwardly inclined structure. A plugging sleeve 16 is fixedly connected to the lowest point of the water tank 15. The water tank 15 is threadedly connected to the plugging sleeve 16, and the outer wall of the water tank 15 is threaded. An exhaust port is provided on the upper part of the water tank 15, and a filter screen is provided at the exhaust port. The air containing a large amount of dust in the classification box 3 is blown to the other side of the classification box 3 by the fan 10. Through the filtration of the net frame 13 on this side, the dust gas enters the water tank 15, and the dust is adsorbed and precipitated by water, so as to remove the dust on the surface of the coal block in screening.

[0022] When the classification and screening device provided in this embodiment is used, the device is taken out and placed in a designated position, and then the vibration motor 5 is screwed and fixed by the positioning rod 4, and then multiple connecting rods 6 are fixed at different intervals at the bottom of the classification box 3 according to the size of the required screening specifications; then the first magnetic ring 11 is bonded to the classification box 3, and then the second magnetic ring 12 is bonded to the mesh frame 13, and then the mesh frame 13 is magnetically adsorbed and fixed to the classification box 3. The water tank 15 is screwed and fixed to the plugging sleeve 16, and then the water tank 15 is filled with water, and the fixing frame 9 is screwed and fixed to the fan 10. According to the required size range of coal blocks, the discharge frame 17 is movably adjusted to the specified position of the partition plate 18, and the positioning sleeve 19 is threaded to fix the partition plate 18. After that, the discharge frame 17 is snap-fitted and fixed to the mounting seat 1. Finally, the coal blocks are poured into the feed port of the classification box 3, and the vibration motor 5 is turned on. The vibration motor 5 drives the classification box 3 to vibrate, and the fan 10 is turned on. The vibrated coal blocks are dusted by the fan 10. After completion, the coal blocks that fall into the discharge frame 17 are taken out.

[0023] The above content is a further detailed description of the present invention in combination with a specific preferred embodiment. It cannot be determined that the specific embodiments of the present invention are limited to this. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the present invention, which should be regarded as belonging to the present invention and the scope of patent protection determined by the submitted claims.

Claims

1. A coal processing classification and screening device, characterized in that: The invention comprises a mounting seat (1), a classification box (3) and a material discharge frame (17) with an open top; the mounting seat (1) and the classification box (3) are supported and connected by a spring (2); a material discharge frame (17) is mounted on the upper part of the mounting seat (1), and the material discharge frame (17) is located directly below the classification box (3); the classification box (3) is connected to a vibration motor (5); the front end of the classification box (3) is a material feed port, and the classification box (3) is a downwardly inclined structure from the material feed port to the rear end thereof; A plurality of connection holes (21) are symmetrically provided on the side walls on both sides of the bottom of the classification box (3); a plurality of connection rods (6) are sequentially installed between the connection holes (21) on both sides; a roller (8) is sleeved on the outer wall of the connection rod (6); there are gaps between the plurality of connection rods (6), and the gaps gradually increase as the bottom surface of the classification box (3) slopes downward; Both side walls of the classification box (3) are provided with filtering and ventilation structures, and the outside of the filtering and ventilation structure of one side wall of the classification box (3) is fixedly connected to a fan (10), and the outside of the filtering and ventilation structure of the other side wall is connected to a water tank (15) via a telescopic tube (14); A plurality of retractable partition plates (18) are detachably connected to the discharge frame (17), and the interior of the discharge frame (17) is divided into a plurality of areas along a direction from one end of the feed inlet of the classification box (3) to the rear end of the classification box (3) by the partition plates (18).

2. A coal processing classification and screening device according to claim 1, characterized in that: Springs (2) are welded at the four corners of the upper surface of the mounting seat (1), and the top ends of the springs (2) are welded to the four corners of the bottom of the classification box (3); the front and rear bottom surfaces of the classification box (3) are fixedly connected to limit posts (22), and the bottom ends of the limit posts (22) are slidably connected to the mounting seat (1).

3. A coal processing classification and screening device according to claim 1, characterized in that: The upper end of the classification box (3) is fixedly connected to a vibration motor (5) via a positioning rod (4).

4. A coal processing classification and screening device according to claim 1, characterized in that: Both ends of the connecting rod (6) are fixedly connected to fixing sleeves (7), the connecting rod (6) and the fixing sleeve (7) are threadedly connected, and the connecting rod (6) and the classification box (3) are fixed by the fixing sleeve (7).

5. The coal processing classification and screening device according to claim 1, characterized in that: The side walls of the material discharging frame (17) are symmetrically provided with slots, the two ends of the partition plate (18) respectively extend out of the slots and are fixedly connected with positioning sleeves (19), and the upper part of the partition plate (18) is slidably connected with a lifting sleeve (20); the partition plate (18) and the lifting sleeve (20) are snap-fitted and connected.

6. The coal processing classification and screening device according to claim 1, characterized in that: The filtering and ventilation structure comprises a first magnetic ring (11), a second magnetic ring (12) and a mesh frame (13); the side walls of the classification box (3) are frame structures and are both bonded with the first magnetic ring (11); the second magnetic ring (12) is attached to one side of the first magnetic ring (11); and the mesh frame (13) is bonded to one side of the second magnetic ring (12).

7. The coal processing classification and screening device according to claim 1, characterized in that: A fixing frame (9) is fixedly connected to the outside of one side wall of the classification box (3), and a fan (10) is fixedly connected to the outer wall of the fixing frame (9).

8. The coal processing classification and screening device according to claim 1, characterized in that: The bottom of the water tank (15) is a downwardly inclined structure. A plugging sleeve (16) is fixedly connected to the lowest point of the water tank (15). The water tank (15) and the plugging sleeve (16) are threadedly connected. An exhaust port is provided at the top of the water tank (15), and a filter screen is provided at the exhaust port.

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