Intelligent dry method sorting equipment for pre-removing gangue of coking coal

Abstract

The utility model discloses a kind of for coke coal pre-arrangement gangue intelligent dry method sorting equipment, which belongs to dry coal preparation technology field, it includes sorting box, and the surface of sorting box is fixedly connected with sorting assembly, and the bottom of sorting box is fixedly connected with conveying mechanism, and the top of conveying mechanism one side is fixedly connected with two-stage sorting mechanism.The utility model is driven first pulley to rotate by first motor, and second pulley and rotating roller are driven synchronous operation by belt drive, and regular poking action is formed on the above bar groove sieve plate of poking rod, can effectively disperse material, avoid local accumulation, while cooperate the screening effect of bar groove sieve plate, part of obvious gangue of granularity and density difference is separated out quickly;Second motor drives two symmetrical crushing rollers to rotate by speed reducer, can carry out pretreatment to the large block material guided into feed tank, ensure that the material granularity of entering sorting link is uniform, greatly improve the processing efficiency of first grade coal sorting.

Description

Technical Field

[0001] This utility model belongs to the field of dry coal preparation technology, specifically relating to an intelligent dry separation device for pre-discharge of coking coal. Background Technology

[0002] During the mining and transportation of coking coal, gangue inevitably gets mixed in. The presence of this gangue increases energy consumption in subsequent coking processes, reduces coke quality, and also occupies transportation and storage space, increasing production costs. Therefore, pre-gangue removal treatment before coking coal enters the main processing flow, that is, separating gangue from coking coal using sorting equipment, is a key step in ensuring coking coal quality and improving production efficiency.

[0003] Chinese patent application publication number CN220532302U discloses a dry sorting device, which includes a support base, a conveyor belt fixed to the upper end of the support base, an inclined conveyor plate fixedly connected to the side of the conveyor belt, a separating plate rotatably connected to the surface of the inclined conveyor plate, a housing fixed to the bottom end of the conveyor belt, and a receiving box fixed to the side of the inclined conveyor plate. This patent application utilizes a rotating rod to drive the separating plate fixedly connected to the top to rotate back and forth, causing the gangue blocks on the conveyor belt to be separated and rotated left and right as they pass through the inclined conveyor plate. The gangue blocks fall left and right into the receiving box, preventing the gangue blocks from accumulating in the receiving box and generating a large amount of debris and dust.

[0004] Existing dry sorting devices use a rotating rod to drive the sorting plate, which can prevent gangue from accumulating on the inclined transport plate to some extent. However, this only solves the problem of debris and dust generated by gangue accumulation during transportation; it does not address the pre-treatment of material particle size. When larger pieces of material are mixed into coking coal, they cannot be effectively crushed. Although some existing technologies perform pre-crushing of large materials, these large pieces generally tend to accumulate on the subsequent sorting screen, resulting in uneven airflow distribution and severely affecting sorting accuracy. Furthermore, existing dry sorting devices only have a single sorting process, relying on simple sorting operations. For coal and gangue with small density differences, it is difficult to achieve complete separation, easily leading to a high coal content in the gangue or excessive gangue content in the coal. Summary of the Invention

[0005] Based on the technical problems existing in the current dry separation device, this utility model provides an intelligent dry separation device for pre-discharge of coking coal. Through the cooperation of separation components, conveying mechanism and secondary separation mechanism, the particle size of the material is pre-treated, and the problem that a single separation process is difficult to achieve complete separation of coal and gangue is solved.

[0006] According to the technical solution of this utility model, this utility model provides an intelligent dry sorting device for pre-discharge of coking coal, which includes a sorting box. A sorting component is fixedly connected to the surface of the sorting box. A conveying mechanism is fixedly connected to the bottom of the sorting box. A secondary sorting mechanism is fixedly connected to one side of the top of the conveying mechanism. The sorting component includes a strip-shaped trough screen plate, which is disposed at the bottom of the inner cavity of the sorting box. A first motor is disposed at the top of the surface of the sorting box. A first pulley is fixedly connected to the output end of the first motor. Mounting plates are fixedly connected to the front and rear ends of the bottom of the sorting box. A rotating roller is movably connected to one side of the mounting plate via a bearing. Feeding rods are circumferentially distributed on the surface of the rotating roller. One side of the feeding rods extends above the strip-shaped trough screen plate. A second pulley is fixedly connected to one side of the rotating roller. The second pulley is connected to the first pulley via a belt. A crushing mechanism is fixedly connected to the inner cavity of the sorting box. The strip-shaped trough screen plate is horizontally set at the bottom of the inner cavity of the sorting box. The strip-shaped troughs on its surface are used to screen according to the particle size difference between coking coal and gangue. Coking coal particles that meet the particle size requirements fall through the trough openings, while larger gangue or unbroken coal blocks are intercepted on the surface of the screen plate. The first motor starts and drives the first pulley to rotate synchronously. Through the transmission action of the belt, the first pulley drives the second pulley and the rotating roller to rotate. The material-pushing rods distributed circumferentially on the surface of the rotating roller rotate with the rotating roller. The part extending above the strip-shaped trough screen plate continuously agitates the material on the surface of the screen plate when rotating, so that the material is evenly spread and avoids local accumulation that affects the screening effect. At the same time, it can push the gangue intercepted on the screen plate in a specific direction, creating conditions for subsequent separation and collection.

[0007] The present invention is further configured such that the crushing mechanism includes a reducer, one side of which is fixedly connected to the sorting box, and a second motor is fixedly connected to one side of the reducer. The output end of the second motor is fixedly connected to the reducer, and a crushing roller is fixedly connected to the output end of the reducer. There are two crushing rollers, which are symmetrically arranged. The two symmetrically arranged crushing rollers rotate synchronously in opposite directions, which can exert a squeezing effect on large pieces of material entering them, complete the crushing operation, ensure uniform particle size of the material, provide suitable raw materials for subsequent sorting stages, and improve the overall sorting efficiency.

[0008] The present invention is further configured such that a feeding trough is provided on one side of the top of the sorting box, and a guide plate is fixedly connected to the inner cavity of the feeding trough. One side of the guide plate extends to one side of the crushing roller. The feeding trough provides a channel for the material to enter the equipment, and the guide plate can guide the material to fall between the crushing rollers, avoiding the material from scattering to the outside of the crushing rollers and causing waste.

[0009] The present invention is further configured such that the conveying mechanism includes a mounting frame, which is disposed below the sorting box. Conveyor belts are provided on both sides of the top of the mounting frame, and a partition plate is provided between the two conveyor belts. The mounting frame supports the conveyor belts, and the two conveyor belts respectively convey materials with different sorting results. The partition plate can effectively prevent the two materials from mixing during the conveying process, ensuring the purity of the sorted materials.

[0010] The present invention is further configured such that the secondary sorting mechanism includes a support frame, one side of which is fixedly connected to the sorting box, a secondary screen plate is fixedly connected to the inner cavity of the support frame, a fixing frame is fixedly connected to one side of the secondary screen plate, a third motor is fixedly connected to one side of the fixing frame, a threaded rod is fixedly connected to the output end of the third motor, a scraper is threadedly connected to the surface of the threaded rod, one side of the scraper is in contact with the surface of the secondary screen plate, the third motor drives the threaded rod to rotate, causing the scraper to move along the surface of the secondary screen plate, pushing the residual gangue on the secondary screen plate to a designated direction, and further separating the gangue mixed in the coal.

[0011] The present invention is further configured such that a connecting frame is fixedly connected to one side of the bottom of the support frame, and columns are fixedly connected to the front and rear ends of the bottom of the connecting frame. The connecting frame and the columns constitute a support structure, which can effectively bear the weight of the secondary sorting mechanism and the material, and prevent the equipment from tilting due to vibration during operation.

[0012] The present invention is further configured such that support rods are fixedly connected to the four corners of the bottom of the sorting box, and one side of the support rod is fixedly connected to the mounting frame. The support rods connect and fix the sorting box to the mounting frame, thereby enhancing the overall structural stability of the equipment.

[0013] The present invention is further configured such that a first discharge plate is connected to the bottom of one side of the sorting box, and one side of the first discharge plate extends above the secondary screen plate. The first discharge plate can guide the material after preliminary sorting in the sorting box to the upper part of the secondary screen plate, so as to avoid the material falling during the transfer process and ensure the connection effect between the primary and secondary sorting.

[0014] The present invention is further configured such that a second discharge plate is fixedly connected to one side of the secondary screen plate. The second discharge plate is inclined, which guides the gangue separated after the secondary sorting to slide down naturally by gravity, thereby ensuring the gangue discharge efficiency.

[0015] The present invention is further configured such that one side of the mounting frame extends below the secondary screen plate, and the conveyor belts have opposite conveying directions, so that coking coal and gangue are conveyed to different collection areas respectively, thereby achieving complete separation and independent processing of the two materials and improving the orderliness of production.

[0016] Compared with existing technologies, the intelligent dry sorting equipment for pre-discharge of coking coal of this invention has the following beneficial effects.

[0017] 1. The intelligent dry sorting equipment for pre-discharge of coking coal of this utility model drives the first pulley to rotate through the first motor, and drives the second pulley and rotating roller to rotate synchronously through the belt drive. The material pushing rod forms a regular pushing action above the strip groove screen plate, which can effectively disperse the material and avoid local accumulation. At the same time, in conjunction with the screening action of the strip groove screen plate, it can quickly separate out some gangue with obvious differences in particle size and density.

[0018] 2. The second motor of the intelligent dry sorting equipment for pre-discharge of coking coal in this utility model drives two symmetrical crushing rollers to rotate through a reducer. This can pre-treat large pieces of material introduced into the feed trough, ensuring that the particle size of the material entering the sorting stage is uniform, and greatly improving the processing efficiency of the first-stage sorting.

[0019] 3. The intelligent dry sorting equipment for pre-discharge of coking coal of this utility model uses a third motor to drive the threaded rod to rotate, so that the scraper moves smoothly along the surface of the secondary screen plate. It can completely separate the gangue with small density differences that remain after the primary sorting, effectively reducing the gangue content in the coal and the coal-carrying rate of the gangue. The first discharge plate accurately guides the material after the primary sorting into the secondary screen plate, ensuring the continuity of the sorting process. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0021] Figure 1 This is a perspective view of the intelligent dry sorting equipment for pre-discharge of coking coal according to the present invention.

[0022] Figure 2 This is a side perspective view of the intelligent dry sorting equipment for pre-discharge of coking coal according to the present invention.

[0023] Figure 3 This is a top perspective view of the intelligent dry sorting equipment for pre-discharge of coking coal according to the present invention.

[0024] Figure 4 This is a perspective view of the first motor and its connection structure in the intelligent dry sorting equipment for pre-discharge of coking coal according to the present invention.

[0025] Figure 5 This is a cross-sectional view of the sorting box in the intelligent dry sorting equipment for pre-discharge of coking coal according to this utility model.

[0026] Explanation of reference numerals in the attached drawings: 1. Sorting box; 2. Sorting assembly; 21. Strip trough screen plate; 22. First motor; 23. First pulley; 24. Mounting plate; 25. Rotating roller; 26. Feeding rod; 27. Second pulley; 28. Crushing mechanism; 281. Reducer; 282. Second motor; 283. Crushing roller; 3. Conveying mechanism; 31. Mounting frame; 32. Conveyor belt; 4. Secondary sorting mechanism; 41. Support frame; 42. Secondary screen plate; 43. Fixing frame; 44. Third motor; 45. Threaded rod; 46. Scraper; 5. Feed trough; 6. Guide plate; 7. Connecting frame; 8. Column; 9. Support rod; 10. First discharge plate; 11. Second discharge plate. Detailed Implementation

[0027] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] This utility model proposes an intelligent dry sorting device for pre-discharge of coking coal. The intelligent dry sorting device integrates crushing, primary screening, secondary sorting and directional conveying functions. Through optimized structural design and collaborative working mechanism, it improves the efficiency and accuracy of pre-discharge of coking coal.

[0029] Please see Figures 1-5 This utility model is an intelligent dry sorting device for pre-discharge of coking coal, which includes a sorting box 1, a sorting component 2 fixedly connected to the surface of the sorting box 1, a conveying mechanism 3 fixedly connected to the bottom of the sorting box 1, a secondary sorting mechanism 4 fixedly connected to one side of the top of the conveying mechanism 3, the sorting component 2 including a strip-shaped groove screen plate 21, the strip-shaped groove screen plate 21 being disposed at the bottom of the inner cavity of the sorting box 1, a first motor 22 being disposed at the top of the surface of the sorting box 1, a first pulley 23 being fixedly connected to the output end of the first motor 22, mounting plates 24 being fixedly connected to the front and rear ends of the bottom of the sorting box 1, a rotating roller 25 being movably connected to one side of the mounting plate 24 via a bearing, a material-pulling rod 26 being distributed circumferentially on the surface of the rotating roller 25, one side of the material-pulling rod 26 extending above the strip-shaped groove screen plate 21, a second pulley 27 being fixedly connected to one side of the rotating roller 25, the second pulley 27 being connected to the first pulley 23 via a belt, and a crushing mechanism 28 being fixedly connected to the inner cavity of the sorting box 1.

[0030] In one embodiment, the strip-shaped trough screen plate 21 is horizontally arranged at the bottom of the inner cavity of the sorting box 1. The strip-shaped troughs on its surface are used for screening based on the particle size difference between coking coal and gangue. Coking coal particles that meet the particle size requirements fall through the trough openings, while larger gangue or unbroken coal blocks are intercepted on the surface of the screen plate. The first motor 22 starts and drives the first pulley 23 to rotate synchronously. Through the transmission action of the belt, the first pulley 23 drives the second pulley 27 and the rotating roller 25 to rotate. The material-pushing rods 26 distributed circumferentially on the surface of the rotating roller 25 rotate with the rotating roller 25. The part of the rods extending above the strip-shaped trough screen plate 21 continuously agitates the material on the surface of the screen plate when rotating, so that the material is evenly spread out and avoids local accumulation that affects the screening effect. At the same time, it can push the gangue intercepted on the screen plate in a specific direction, creating conditions for subsequent separation and collection.

[0031] In a preferred embodiment, the sorting box 1 can be welded from Q235 steel plate, and the overall structure can be a cuboid (length × width × height of 2000mm × 1200mm × 1500mm). The side wall thickness of the box is 8mm, and the four corners of the bottom can be bolted to support rods 9 (the support rods 9 are seamless steel pipes with a diameter of 50mm and a length of 800mm). The bottom of the support rods 9 can be welded with anti-slip pads (nitrile rubber material, thickness of 10mm) to ensure the stability of the equipment. The top of the sorting box 1 can be provided with a feed chute 5, and one side of the bottom can be connected to a first discharge plate 10 (made of wear-resistant steel plate, length of 500mm, and angled at 30° with the horizontal plane), which can be used to guide the transfer of materials after preliminary sorting.

[0032] In some embodiments, the sorting component 2 may be disposed within the sorting box 1, including a strip-shaped trough screen plate 21, a first motor 22, a transmission mechanism, and a feeding mechanism. In this embodiment, the connection relationships between the various components in the existing sorting component can be adopted, for example, the existing connection relationships between the strip-shaped trough screen plate 21, the first motor 22, the transmission mechanism, and the feeding mechanism can be adopted to realize the sorting action.

[0033] In some embodiments, the strip-shaped trough screen plate 21 can be horizontally installed at the bottom of the inner cavity of the sorting box 1 (300mm from the bottom of the box). It can be made of 65Mn spring steel (12mm thick), and its surface can be provided with strip-shaped grooves (groove width 15mm, groove spacing 20mm). The groove opening direction can be consistent with the material conveying direction. It can be detachably connected to the inner wall of the sorting box 1 by bolts, which facilitates the replacement of screen plates with different groove widths according to the particle size of the material. The size design of the strip-shaped groove is based on the particle size difference between coking coal and gangue (coking coal particles are usually ≤50mm, gangue particles are usually ≥30mm), which can intercept large pieces of gangue and unbroken coal blocks, and allow coking coal of the correct particle size to pass through. In this embodiment, existing connection or positional relationships can be used in addition to those that have been declared or described.

[0034] In some embodiments, the first motor 22 can be fixed to the top of the sorting box 1 surface by a motor mount (power 1.5kW, speed 1450r / min), and the output end is connected to the first pulley 23 (diameter 100mm, material is gray cast iron) by a flat key.

[0035] In some embodiments, the transmission mechanism may include a mounting plate 24, a rotating roller 25, and a second pulley 27. The mounting plate 24 consists of two steel plates (10mm thick), symmetrically welded to the front and rear ends of the bottom of the sorting box 1; the rotating roller 25 (80mm in diameter, 1000mm in length, made of No. 45 steel) is movably connected between the two mounting plates 24 via bearings, and one end of the roller extends out of the mounting plate 24 and is connected to the second pulley 27 (200mm in diameter, cooperating with the first pulley 23, with a transmission ratio of 2:1) via a flat key; the second pulley 27 is connected to the first pulley 23 via a V-belt (model A1400) to achieve speed reduction transmission.

[0036] In some embodiments, the feeding mechanism may include feeding rods 26, which are round steel bars with a diameter of 16 mm, a total of 12 rods, evenly distributed along the circumference of the rotating roller 25 (at a spacing of 30°), with a length of 300 mm, and a wear-resistant rubber head (thickness of 20 mm) welded to the end. The feeding rods 26 extend 50 mm above the strip trough screen plate 21 on the side away from the rotating roller 25, and can feed material when rotating.

[0037] In some embodiments, the crushing mechanism 28 can be fixed to the upper part of the inner cavity of the sorting box 1 (located below the feed trough 5) to crush large pieces of material and ensure the subsequent screening effect.

[0038] In some embodiments, the strip-shaped trough screen plate 21 can horizontally carry materials. Its strip-shaped troughs can screen coking coal and gangue based on particle size differences—coking coal particles of the appropriate size (≤15mm) can fall through the trough openings, while larger gangue or unbroken coal blocks are intercepted. After the first motor 22 starts, it drives the second pulley 27 and rotating roller 25 to rotate (725 r / min) via the first pulley 23 and belt. The material-pushing rod 26 rotates synchronously with the rotating roller 25, continuously agitating the material on the screen plate surface to ensure even distribution of the material (avoiding local accumulation and blockage of the trough openings). Simultaneously, it pushes the intercepted gangue towards the first discharge plate 10, preparing for subsequent crushing and possible secondary sorting. The crushing mechanism 28 pre-crushes large pieces of material to ensure that the particle size of the material entering the strip-shaped trough screen plate 21 matches the width of the trough, improving screening efficiency. In this embodiment, existing connection or positional relationships can be used in addition to those already declared or described. Furthermore, those skilled in the art will recognize after reading this application that materials with a particle size >15mm that do not fall after a single screening can be crushed a second time and then sorted again. Moreover, materials with a particle size >15mm that do not fall after a single screening can be crushed and then sorted again using the equipment described in this application.

[0039] Please see Figure 1-5Based on Embodiment 1, the crushing mechanism 28 includes a reducer 281, one side of which is fixedly connected to the sorting box 1. A second motor 282 is fixedly connected to one side of the reducer 281, and the output end of the second motor 282 is fixedly connected to the reducer 281. A crushing roller 283 is fixedly connected to the output end of the reducer 281. There are two crushing rollers 283, which are symmetrically arranged. A feed chute 5 is provided on one side of the top of the sorting box 1. A guide plate 6 is fixedly connected to the inner cavity of the feed chute 5. One side of the guide plate 6 extends to one side of the crushing roller 283. The conveying mechanism 3 includes a mounting frame 31, which is located below the sorting box 1. Conveyor belts 32 are provided on both sides of the top of the mounting frame 31, and a partition plate is provided between the two conveyor belts 32. The secondary sorting mechanism 4 includes a support frame 41, one side of which is fixedly connected to the sorting box 1. The inner cavity of the support frame 41 is fixedly connected to the second motor 282. A secondary screen plate 42 is connected to a fixed frame 43 on one side of the secondary screen plate 42. A third motor 44 is fixedly connected to one side of the fixed frame 43. A threaded rod 45 is fixedly connected to the output end of the third motor 44. A scraper 46 is threadedly connected to the surface of the threaded rod 45. One side of the scraper 46 is in contact with the surface of the secondary screen plate 42. A connecting frame 7 is fixedly connected to one side of the bottom of the support frame 41. A column 8 is fixedly connected to the front and rear ends of the bottom of the connecting frame 7. Support rods 9 are fixedly connected to the four corners of the bottom of the sorting box 1. One side of the support rod 9 is fixedly connected to the mounting frame 31. A first discharge plate 10 is connected to the bottom of one side of the sorting box 1. One side of the first discharge plate 10 extends above the secondary screen plate 42. A second discharge plate 11 is fixedly connected to one side of the secondary screen plate 42. The second discharge plate 11 is inclined. One side of the mounting frame 31 extends below the secondary screen plate 42. The conveyor belt 32 has the opposite conveying direction. In this embodiment, in addition to the positional or connection relationships that have been declared or described, existing connection or positional relationships may be used.

[0040] In some embodiments, the crushing mechanism 28 may include a reducer 281, a second motor 282, and crushing rollers 283. The reducer 281 (model ZQ350, reduction ratio 5:1) can be bolted to the outer wall of the sorting box 1. The input end can be connected to the second motor 282 (power 3kW, speed 1450r / min) via a coupling. The output end can be connected to two crushing rollers 283 (diameter 150mm, length 1000mm, high-chromium cast iron, with staggered crushing teeth on the surface, tooth height 20mm) via a gear set (module 3, number of teeth 20). The two crushing rollers 283 can be symmetrically arranged in the inner cavity of the sorting box 1 (the spacing can be adjusted by adjusting the gear set gap, range 5-30mm), and rotate synchronously in opposite directions (speed 290r / min), forming compression and shearing crushing on large pieces of material falling into it.

[0041] The feeding trough 5 of the feeding auxiliary structure can be a funnel shape that is wider at the top and narrower at the bottom (upper opening size 600mm×400mm, lower opening size 300mm×200mm). The inner cavity is fixedly connected with a guide plate 6 (made of wear-resistant ceramic, 15mm thick, with an angle of 60° to the horizontal plane) by bolts. The end of the guide plate 6 extends to 100mm above the two crushing rollers 283 to ensure that the material falls accurately into the crushing area and avoids scattering.

[0042] The conveying mechanism 3 may include a mounting frame 31 and conveyor belts 32. The mounting frame 31 is a welded steel frame (3000mm long and 1500mm wide), which is fixedly connected to the support rod 9 by bolts. Conveyor belts 32 (500mm wide, made of wear-resistant rubber, with anti-slip texture on the surface) are symmetrically arranged on both sides of the top. The drive motor of the conveyor belts 32 is a variable frequency motor (1.1kW power, speed adjustable from 0-2m / s). A partition plate (200mm high, made of steel plate) is welded between the two conveyor belts 32, and the conveying directions are opposite (the left conveyor belt conveys to the front of the equipment, and the right conveyor belt conveys to the rear of the equipment), which are used to convey qualified coking coal and gangue respectively.

[0043] The secondary sorting mechanism 4 may include a support frame 41, a secondary screen plate 42, a scraper assembly, and a discharge structure. The support frame 41 may be a rectangular steel frame (1500mm long and 800mm wide), which is fixedly connected to the side wall of the sorting box 1 by bolts. A connecting frame 7 (made of channel steel) is welded to one side of the bottom. The front and rear ends of the bottom of the connecting frame 7 are fixed with columns 8 (steel pipe with a diameter of 80mm and a height of 1000mm) by bolts. The bottom of the columns 8 is fixed to the ground by expansion bolts.

[0044] The secondary screen plate 42 can be made of wear-resistant cast iron (15mm thick) and is installed at an angle in the inner cavity of the support frame 41 (20° with the horizontal plane). The surface is provided with circular screen holes (10mm in diameter) for further screening of coal and gangue with similar particle sizes (some small-sized gangue may pass through the primary screen plate).

[0045] The scraper assembly may include a fixing frame 43, a third motor 44, a threaded rod 45, and a scraper 46. The fixing frame 43 is welded to the high end of the secondary screen plate 42; the third motor 44 (power 0.75kW, speed 1450r / min) is fixed to the fixing frame 43 by bolts, and its output end is connected to the threaded rod 45 (diameter 20mm, length 1200mm, pitch 5mm) via a coupling; the scraper 46 (length 700mm, width 50mm, material wear-resistant rubber) is threaded to the threaded rod 45 by nuts, and its bottom is in contact with the surface of the secondary screen plate 42 (the pressure can be controlled by adjusting the preload of the nut).

[0046] The end of the first discharge plate 10 of the discharge structure can extend to 100mm above the high end of the secondary screen plate 42; a second discharge plate 11 (600mm long, with an angle of 45° to the horizontal plane) is welded to the lower side of the secondary screen plate 42 to guide the discharge of gangue after secondary separation; the right side conveyor belt 32 of the mounting frame 31 extends below the secondary screen plate 42 to receive the coking coal passing through the secondary screen plate.

[0047] A reinforcing rib (8mm thick triangular steel plate) is welded between the sorting box 1 and the mounting frame 31 to enhance the overall structural rigidity; each transmission component is equipped with a protective cover (made of steel plate) to prevent dust from entering and personnel from accidentally touching it. Specifically, two symmetrically arranged crushing rollers 283 rotate synchronously in opposite directions, which can compress large pieces of material entering them to complete the crushing operation, ensuring uniform particle size and providing suitable raw materials for subsequent sorting stages, thus improving overall sorting efficiency. The feed trough 5 provides a channel for materials to enter the equipment, and the guide plate 6 can guide the material to fall between the crushing rollers 283, preventing material from scattering to the outside of the crushing rollers 283 and causing waste. The mounting frame 31 supports the conveyor belt 32. The conveyor belts 32 on both sides transport materials with different sorting results respectively. The separator plate can effectively prevent the two materials from mixing during the conveying process, ensuring the purity of the sorted material. The conveyor belt 32 below the sorting box 1 transports the material screened by the strip groove screen plate 21, and the other conveyor belt is used to transport the material screened by the secondary screen plate 42. The third motor 44 drives the threaded rod 45 to rotate, so that the scraper 46 moves along the surface of the secondary screen plate 42. The moving mechanism pushes the residual gangue on the secondary screen plate 42 in a designated direction, further separating the gangue mixed in the coal. The connecting frame 7 and the column 8 form a support structure that can effectively bear the weight of the secondary sorting mechanism 4 and the material, preventing the equipment from tilting due to vibration during operation. The support rod 9 connects and fixes the sorting box 1 to the mounting frame 31, enhancing the overall structural stability of the equipment. The first discharge plate 10 guides the material after preliminary sorting in the sorting box 1 to the top of the secondary screen plate 42, preventing the material from falling during the transfer process and ensuring the connection effect between the primary and secondary sorting. The second discharge plate 11 is set at an inclination, guiding the gangue separated after the secondary sorting to slide down naturally by gravity, ensuring the gangue discharge efficiency. The conveyor belt 32 conveys in opposite directions, transporting coking coal and gangue to different collection areas respectively, realizing the complete separation and independent processing of the two materials, and improving the orderliness of production.

[0048] A more specific possible implementation is as follows: the crushing rollers 283 rotate synchronously in opposite directions, crushing large pieces of material (≥30mm) with crushing teeth to control the particle size to ≤25mm, suitable for subsequent screening. The feed chute 5 accurately guides the material into the crushing area through the guide plate 6 to avoid waste. In the conveyor belt 32 supported by the mounting frame 31, the left side receives qualified coking coal falling from the primary screen plate, and the right side receives material falling from the secondary screen plate; the separator prevents the two materials from mixing. The secondary screen plate 42 further screens through a 10mm aperture, and small-sized coking coal (≤10mm) falls into the right conveyor belt through the screen holes, while the remaining small-sized gangue is pushed to the second discharge plate 11 by the scraper 46 for discharge. The third motor 44 drives the threaded rod 45 to rotate, causing the scraper 46 to move along the screen plate at a speed of 50mm / s to ensure no material residue. The connecting frame 7, the column 8, and the support rod 9 constitute a stable support system that can withstand the weight of the equipment and materials (total load ≤500kg) and avoid displacement caused by vibration. In this embodiment, in addition to the positional or connection relationships that have been declared or described, existing connection or positional relationships may be used.

[0049] The working principle of this utility model is as follows: Coking coal material enters from the feed chute 5, and the guide plate 6 guides the material to fall between two symmetrical crushing rollers 283. After the second motor 282 starts, the two crushing rollers 283 are driven to rotate synchronously in opposite directions through the reducer 281, forming a squeezing effect on the large pieces of material entering, crushing them into small pieces of uniform particle size, for example, crushing the large pieces of material to ≤25mm. The crushed material falls onto the strip trough screen plate 21. The first motor 22 starts, driving the first pulley 23 to rotate, and through belt transmission, the second pulley 27 drives the rotating roller 25 to rotate. The material rod 26 rotates synchronously with the rotating roller 25. The material pusher 26 extends above the strip trough screen plate 21. During the rotation, it continuously pushes the material to spread it evenly and avoid local accumulation. Coking coal with a particle size ≤15mm falls into the left conveyor belt 32 through the strip trough. The strip trough screen plate 21 screens according to the particle size difference between coking coal and gangue. Coking coal particles that meet the particle size requirements fall through the strip trough and onto the conveyor belt 32 below. Larger gangue or incompletely crushed coal blocks are intercepted on the surface of the screen plate and move to one side of the sorting box 1 under the push of the material pusher 26.

[0050] After initial sorting, the material falling into the secondary screen plate 42, coking coal with a particle size ≤10mm falls through the circular screen holes into the right conveyor belt 32; the third motor 44 drives the scraper 46 to move along the screen plate, pushing the remaining small-sized gangue to the second discharge plate 11, falling into the gangue collection area. The material pushed by the push rod 26 passes through the first discharge plate 10 and is guided to the secondary screen plate 42. The third motor 44 starts and drives the threaded rod 45 to rotate, causing the scraper 46 threadedly connected to the threaded rod 45 to move along the surface of the secondary screen plate 42. The scraper 46 is in close contact with the surface of the secondary screen plate 42, pushing the remaining gangue on the secondary screen plate 42 to one side, further separating the gangue mixed in the coal. The separated gangue, pushed by the scraper 46, slides through the second discharge plate 11 to the designated collection area.

[0051] This invention employs a multi-stage sorting mode of "primary strip trough screening + secondary circular screen screening," combined with material feeding and scraper assistance, to effectively separate coking coal and gangue of similar particle sizes. The gangue removal rate is ≥95%, and the coking coal loss rate is ≤3%. The crushing mechanism pre-crushes large pieces of material to prevent screen plate blockage. The continuous movement of the feeding rod and scraper prevents material accumulation. The equipment has a continuous processing capacity of 50-100 tons / hour. Both the strip trough screen and the secondary screen are detachable and replaceable to adapt to coking coal of different particle sizes. The crushing roller spacing is adjustable, and it can process raw materials of 5-100mm. Multiple sets of support rods, columns, and reinforcing ribs form a rigid frame, and the vibration amplitude during equipment operation is ≤0.5mm, ensuring material transmission accuracy. The dry sorting mode requires no water resources, saving 100% of water compared to wet sorting. All motors are frequency converter controlled, reducing energy consumption by more than 20%.

[0052] It is understood that in this utility model, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0053] The core purpose of terms like "first" and "second" is to distinguish information of the same type, rather than to define a specific order or degree of importance. In the description of technical solutions, the use of these terms helps to clearly categorize various types of information. For example, when describing data collected by multiple sensors, labeling them as "first sensor data" and "second sensor data" is merely to clearly distinguish data from different sources in subsequent data analysis, processing, and technical logic construction, and does not imply that the first sensor data is more important than the second sensor data, or that there is a strict order in which they were collected. In fact, without departing from the scope of this utility model, the names "first information" and "second information" are completely interchangeable. This fully reflects the flexibility and non-sequential nature of these terms in information classification, avoiding misunderstandings and unnecessary restrictions that may arise from the use of these terms.

[0054] It is further understood that the terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation.

[0055] It can be further understood that, unless otherwise specified, "connection" includes both direct connections where no other components exist between the two parties and indirect connections where other components exist between them.

[0056] It is further understood that although the operations are described in a specific order in the accompanying drawings in the embodiments of this utility model, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all the operations shown to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0057] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0058] It should be understood that this utility model is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this utility model is limited only by the appended claims.

Claims

1. An intelligent dry sorting device for pre-discharge of coking coal, comprising a sorting box (1), characterized in that: The sorting box (1) is fixedly connected to a sorting component (2), the bottom of the sorting box (1) is fixedly connected to a conveying mechanism (3), and a secondary sorting mechanism (4) is fixedly connected to one side of the top of the conveying mechanism (3). The sorting assembly (2) includes a strip groove screen plate (21), which is located at the bottom of the inner cavity of the sorting box (1). A first motor (22) is located at the top of the surface of the sorting box (1). A first pulley (23) is fixedly connected to the output end of the first motor (22). Mounting plates (24) are fixedly connected to the front and rear ends of the bottom of the sorting box (1). A rotating roller (25) is movably connected to one side of the mounting plate (24) through a bearing. A feeding rod (26) is distributed circumferentially on the surface of the rotating roller (25). One side of the feeding rod (26) extends above the strip groove screen plate (21). A second pulley (27) is fixedly connected to one side of the rotating roller (25). The second pulley (27) is connected to the first pulley (23) through a belt. A crushing mechanism (28) is fixedly connected to the inner cavity of the sorting box (1).

2. The intelligent dry sorting equipment for pre-discharge of coking coal according to claim 1, characterized in that: The crushing mechanism (28) includes a reducer (281), one side of which is fixedly connected to the sorting box (1), and a second motor (282) is fixedly connected to one side of the reducer (281). The output end of the second motor (282) is fixedly connected to the reducer (281), and a crushing roller (283) is fixedly connected to the output end of the reducer (281). There are two crushing rollers (283), and the crushing rollers (283) are symmetrically arranged.

3. The intelligent dry sorting equipment for pre-discharge of coking coal according to claim 2, characterized in that: A feed trough (5) is provided on one side of the top of the sorting box (1). A guide plate (6) is fixedly connected to the inner cavity of the feed trough (5). One side of the guide plate (6) extends to one side of the crushing roller (283).

4. The intelligent dry sorting equipment for pre-discharge of coking coal according to claim 1, characterized in that: The conveying mechanism (3) includes a mounting frame (31), which is located below the sorting box (1). Conveyor belts (32) are provided on both sides of the top of the mounting frame (31), and a partition plate is provided between the two conveyor belts (32).

5. The intelligent dry sorting equipment for pre-discharge of coking coal according to claim 1, characterized in that: The secondary sorting mechanism (4) includes a support frame (41), one side of which is fixedly connected to the sorting box (1). A secondary sieve plate (42) is fixedly connected to the inner cavity of the support frame (41). A fixing frame (43) is fixedly connected to one side of the secondary sieve plate (42). A third motor (44) is fixedly connected to one side of the fixing frame (43). A threaded rod (45) is fixedly connected to the output end of the third motor (44). A scraper (46) is threadedly connected to the surface of the threaded rod (45). One side of the scraper (46) is in contact with the surface of the secondary sieve plate (42).

6. The intelligent dry sorting equipment for pre-discharge of coking coal according to claim 5, characterized in that: A connecting frame (7) is fixedly connected to one side of the bottom of the support frame (41), and columns (8) are fixedly connected to the front and rear ends of the bottom of the connecting frame (7).

7. The intelligent dry sorting equipment for pre-discharge of coking coal according to claim 5, characterized in that: The four corners of the bottom of the sorting box (1) are fixedly connected with support rods (9), and one side of the support rods (9) is fixedly connected to the mounting frame (31).

8. The intelligent dry sorting equipment for pre-discharge of coking coal according to claim 5, characterized in that: The bottom of one side of the sorting box (1) is connected to a first discharge plate (10), and one side of the first discharge plate (10) extends above the secondary screen plate (42).

9. The intelligent dry sorting equipment for pre-discharge of coking coal according to claim 5, characterized in that: A second discharge plate (11) is fixedly connected to one side of the secondary screen plate (42), and the second discharge plate (11) is inclined.

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