Coal washing and dressing equipment with screening mechanism

Abstract

The invention discloses coal washing and dressing equipment with a screening mechanism, and relates to the technical field of coal washing and dressing, the coal washing and dressing equipment comprises a cleaning box and a sorting box, the cleaning box is filled with clear water, the sorting box is filled with heavy suspension liquid, and a first leakage hole conveying belt is obliquely mounted in the cleaning box; a driving mechanism is arranged on a driving rod of the first leakage hole conveying belt, a drying mechanism is arranged between the cleaning box and the sorting box, and a conveying mechanism is arranged in the sorting box. The first leak hole conveying belt reciprocates in water, coal briquettes are cleaned, meanwhile, due to the fact that the conveying distance to the separation box is larger than the conveying distance away from the separation box, the whole coal briquettes are conveyed to the separation box, the cleaning and conveying efficiency of the coal briquettes is improved, and the labor intensity of workers is reduced. And the coal briquettes are slowly conveyed into the separation box through the fifth leakage hole conveying belt, vertical floating of the coal briquettes and the gangue is reduced, and the flotation separation efficiency of the coal briquettes and the gangue is improved.

Description

Technical Field

[0001] The invention relates to the technical field of coal washing, in particular to coal washing equipment with a screening mechanism. Background Art

[0002] Coal washing generally refers to the process of removing gangue or other impurities from coal. Coal washing is generally carried out by utilizing the different physical properties of coal and gangue to separate coal and gangue (impurities) in media of different densities or characteristics.

[0003] During coal cleaning, the existing cleaning device has low efficiency in cleaning and conveying coal, and is prone to incomplete cleaning. At the same time, when using heavy suspension to separate coal and gangue, due to the impact force when inputting coal and gangue, coal and gangue can easily float up and down in the heavy suspension, affecting the separation and conveying of coal and gangue, and reducing the sorting efficiency.

[0004] In view of the above problems, an improved coal washing equipment with a screening mechanism is now designed. Summary of the invention

[0005] The object of the present invention is to provide a coal washing and sorting equipment with a screening mechanism to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A coal washing and sorting equipment with a screening mechanism comprises a washing box and a sorting box, wherein the washing box is filled with clean water, the sorting box is filled with heavy suspension, a first leak hole conveyor belt for washing coal is obliquely installed inside the washing box, the input end of the first leak hole conveyor belt is arranged at a corner of the bottom of the washing box away from the sorting box, the output end of the first leak hole conveyor belt is inclined upward over the upper end of the side wall of the washing box close to the sorting box, first side baffles for supporting the first leak hole conveyor belt are arranged on both sides of the first leak hole conveyor belt, and the first side baffles are installed on the washing box On the inner wall of the box, a plurality of first leakage hole plates for conveying coal blocks are installed on the belt of the first leakage hole conveyor belt, a water inlet pipe for conveying clean water to the inside of the cleaning box is installed on the upper end of the side wall of the cleaning box, and a drainage pipe for discharging sewage is installed on the lower end of the side wall of the cleaning box. A driving mechanism for reciprocating the first leakage hole conveyor belt to clean and convey the coal blocks is arranged on the driving rod of the first leakage hole conveyor belt, a drying mechanism for removing moisture from the coal blocks is arranged between the cleaning box and the sorting box, and a conveying mechanism for sorting and conveying the coal blocks is arranged inside the sorting box.

[0008] As a further solution of the present invention: a first baffle is slidingly sleeved on both sides of the belt above the first leak hole conveyor belt for preventing coal blocks from falling, and a V-shaped baffle is installed on the inner wall of the cleaning box above the input end of the first leak hole conveyor belt for blocking the coal blocks so that the coal blocks fall completely onto the first leak hole conveyor belt.

[0009] As a further solution of the present invention: the driving mechanism includes a rotating rod, which is installed at one end of the driving rod, and the end of the rotating rod away from the driving rod passes through the side wall of the cleaning box and is arranged outside the cleaning box. The driving rod and the rotating rod are integrally processed, and the side wall of the rotating rod is equipped with a second gear and a third gear through a ratchet structure. The diameter of the second gear is larger than the diameter of the third gear. The rotation directions of the second gear and the third gear are opposite, and only the second gear and the third gear are allowed to drive the rotating rod to rotate. The third gear enables the first leakage hole conveyor belt to transport the coal blocks toward the sorting box, and the second gear enables the first leakage hole conveyor belt to transport the coal blocks away from the sorting box.

[0010] The rotating rod is provided with a rotating frame, and the rotating frame is rotatably connected to the side wall of the cleaning box through a rotating seat. A fourth gear used in conjunction with the third gear is arranged inside the rotating frame, and the fourth gear is meshed with the third gear. The fourth gear has the same model as the second gear. The fourth gear is rotatably connected to the side wall of the cleaning box inside the rotating frame through a rotating shaft. The fourth gear and the second gear are close to two adjacent quadrants of the rotating frame. A second arc-shaped toothed ring meshed with the second gear is installed on the inner wall of the rotating frame, and the arc length of the second arc-shaped toothed ring is the rotation axis. A first arc-shaped gear ring meshing with a fourth gear is installed on the inner wall of the rotating frame, and the arc length of the first arc-shaped gear ring is three-quarters of the circumference of the inner wall of the rotating frame. The rotation starting ends of the second arc-shaped gear ring of the first arc-shaped gear ring are flush with each other, and the starting ends of the first arc-shaped gear ring and the second arc-shaped gear ring first pass through the second gear and then pass through the fourth gear. A first gear ring is installed on the side wall of the rotating frame, and a motor is installed on the side wall of the cleaning box. The output end of the motor is installed with a first gear, and the first gear and the first gear ring mesh with each other.

[0011] As a further solution of the present invention: the drying mechanism includes a drying box, both ends of which are respectively installed on the upper ends of the side walls of the cleaning box and the side walls of the sorting box, a second leaky hole conveyor belt for conveying coal blocks is horizontally arranged inside the drying box, a collecting bucket for collecting coal blocks output by the first leaky hole conveyor belt is installed on the drying box above the input end of the second leaky hole conveyor belt, and a plurality of hot air blowers for drying the coal blocks are installed on the top of the drying box.

[0012] As a further solution of the present invention: a second baffle frame for preventing coal blocks from falling is mounted on the belt side wall above the second leak hole conveyor belt, and the second baffle frame is installed on the inner wall of the drying box. An inclined baffle plate for preventing coal blocks from falling is installed on the inner wall of the drying box near the cleaning box side of the collecting bucket, and the lower end of the inclined baffle plate is obliquely installed on the upper end of the second baffle frame.

[0013] As a further solution of the present invention: the conveying mechanism includes a fifth leakage hole conveyor belt, which is arranged obliquely downward inside the sorting box, and the upper end of the fifth leakage hole conveyor belt is arranged below the output end of the drying box, and a plurality of second leakage hole plates for preventing coal blocks from rolling are installed on the belt of the fifth leakage hole conveyor belt, and second side baffles are installed on the inner walls of the sorting box on both sides of the fifth leakage hole conveyor belt, and a fourth leakage hole conveyor belt for outputting gangue is arranged obliquely upward inside the sorting box on the output side of the fifth leakage hole conveyor belt, and the fourth leakage hole conveyor belt is installed between the two second side baffles, and a plurality of fourth leakage hole plates are installed on the belt of the fourth leakage hole conveyor belt, and a third leakage hole conveyor belt for outputting coal blocks is arranged obliquely upward inside the sorting box above the output side of the fifth leakage hole conveyor belt, and the third leakage hole conveyor belt is installed between the two second side baffles, and a plurality of third leakage hole plates are installed on the belt of the third leakage hole conveyor belt, and a flow component for making the heavy suspension flow is arranged on the inner wall of the sorting box.

[0014] As a further solution of the present invention: a block for allowing the gangue to completely enter the input end of the fourth leak hole conveyor belt is installed on the inner wall of the sorting box at the output end of the fourth leak hole conveyor belt.

[0015] As a further solution of the present invention: a fifth baffle is installed on both sides of the belt above the fifth leakage hole conveyor belt for preventing coal blocks from falling, a fourth baffle is installed on both sides of the belt above the fourth leakage hole conveyor belt for preventing coal blocks from falling, a third baffle is installed on both sides of the belt above the third leakage hole conveyor belt for preventing coal blocks from falling, and the fifth baffle, the fourth baffle and the third baffle are all installed on the side wall of the second side baffle plate.

[0016] As a further solution of the present invention: the flow component includes two collecting frames, which are respectively installed on the side walls of the two second side baffles above the fifth leakage hole conveyor belt, and a plurality of nozzles are installed on the side walls of the collecting frames facing the third leakage hole conveyor belt. A water supply pipe is installed at the input end of the collecting frame, and a water pump is installed at one end of the water supply pipe away from the collecting frame through the second side baffle and the side wall of the sorting box. The water pump is installed on the side wall of the sorting box, and a water suction pipe is installed at the input end of the sorting box. The end of the water suction pipe away from the water pump passes through the sorting box and the second side baffle and is arranged on the inner wall of the second side baffle below the fourth leakage hole conveyor belt.

[0017] As a further solution of the present invention: a triangular supporting rib for supporting the drying box is installed on one side of the lower end of the drying box close to the cleaning box and the sorting box.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention realizes the cleaning of coal blocks by making the first leak hole conveyor belt reciprocate in water. At the same time, because the conveying distance to the sorting box is greater than the conveying distance away from the sorting box, the coal blocks are conveyed to the sorting box as a whole, and are cleaned while being conveyed, thereby effectively improving the cleaning and conveying efficiency of the coal blocks.

[0020] The present invention dries the cleaned coal blocks by a hot air blower, thereby preventing moisture on the coal blocks from entering the resuspension liquid in the sorting box, ensuring the normal use of the resuspension liquid, and increasing the use time of the resuspension liquid.

[0021] The present invention slowly conveys the coal blocks to the inside of the separation box through the fifth leaky hole conveyor belt, reduces the up and down floating of the coal blocks and gangue, and effectively improves the flotation separation efficiency of the coal blocks and gangue. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention.

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention.

[0024] Figure 3 It is a structural schematic diagram of the driving mechanism in the present invention.

[0025] Figure 4 It is a schematic diagram of the structure of the flow component in the present invention.

[0026] Among them: 1. cleaning box; 2. first leak plate; 3. driving rod; 4. V-shaped baffle; 5. first side baffle; 6. first baffle frame; 7. first leak conveyor belt; 8. collecting bucket; 9. drying box; 10. second leak conveyor belt; 11. hot air blower; 12. second baffle frame; 13. second leak plate; 14. collecting frame; 15. third leak conveyor belt; 16. third baffle frame; 17. third leak plate; 18. second side baffle; 19. water suction pipe; 20. sorting box; 21. Fourth baffle; 22. Fourth leakage hole plate; 23. Fourth leakage hole conveyor belt; 24. Fifth baffle; 25. Block; 26. Fifth leakage hole conveyor belt; 27. Water inlet pipe; 28. Water pump; 29. ​​Water supply pipe; 30. Drain pipe; 31. First gear; 32. Rotating frame; 33. First gear ring; 34. Second gear; 35. Third gear; 36. Rotating rod; 37. First arc gear ring; 38. Second arc gear ring; 39. Fourth gear; 40. Motor; 41. Spray nozzle. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 4 In an embodiment of the present invention, a coal washing and sorting equipment with a screening mechanism includes a washing box 1 and a sorting box 20, wherein the washing box 1 is filled with clean water, and the sorting box 20 is filled with a heavy suspension. A first leak hole conveyor belt 7 for washing coal is obliquely installed inside the washing box 1, and the input end of the first leak hole conveyor belt 7 is arranged at a corner of the bottom of the washing box 1 away from the sorting box 20, and the output end of the first leak hole conveyor belt 7 is inclined upward over the upper end of the side wall of the washing box 1 close to the sorting box 20. First side baffles 5 for supporting the first leak hole conveyor belt 7 are arranged on both sides of the first leak hole conveyor belt 7, and the first side baffles 5 Installed on the inner wall of the cleaning box 1, a plurality of first leaky hole plates 2 for conveying coal blocks are installed on the belt of the first leaky hole conveyor belt 7, a water inlet pipe 27 for always conveying clean water to the inside of the cleaning box 1 is installed on the upper end of the side wall of the cleaning box 1, and a drain pipe 30 for discharging sewage is installed on the lower end of the side wall of the cleaning box 1. A driving mechanism for reciprocating the first leaky hole conveyor belt 7 for cleaning and conveying the coal blocks is provided on the driving rod 3 of the first leaky hole conveyor belt 7, a drying mechanism for removing moisture from the coal blocks is provided between the cleaning box 1 and the sorting box 20, and a conveying mechanism for sorting and conveying the coal blocks is provided inside the sorting box 20.

[0029] A first baffle 6 is slidably sleeved on both sides of the belt above the first leak hole conveyor belt 7 for preventing coal blocks from falling, and a V-shaped baffle 4 is installed on the inner wall of the cleaning box 1 above the input end of the first leak hole conveyor belt 7 for blocking the coal blocks so that the coal blocks fall completely onto the first leak hole conveyor belt 7.

[0030] The driving mechanism includes a rotating rod 36, which is installed at one end of the driving rod 3. The end of the rotating rod 36 away from the driving rod 3 passes through the side wall of the cleaning box 1 and is arranged outside the cleaning box 1. The driving rod 3 and the rotating rod 36 are integrally processed. The side wall of the rotating rod 36 is installed with a second gear 34 and a third gear 35 through a ratchet structure. The diameter of the second gear 34 is greater than the diameter of the third gear 35. The second gear 34 and the third gear 35 have opposite rotation directions, and only the second gear 34 and the third gear 35 are allowed to drive the rotating rod 36 to rotate. The third gear 35 enables the first leakage hole conveyor belt 7 to transport the coal blocks toward the sorting box 20, and the second gear 34 enables the first leakage hole conveyor belt 7 to transport the coal blocks away from the sorting box 20.

[0031] The rotating rod 36 is sleeved with a rotating frame 32, and the rotating frame 32 is rotatably connected to the side wall of the cleaning box 1 through a rotating seat. The interior of the rotating frame 32 is provided with a fourth gear 39 used in conjunction with the third gear 35, and the fourth gear 39 is meshed with the third gear 35. The fourth gear 39 is of the same model as the second gear 34. The fourth gear 39 is rotatably connected to the side wall of the cleaning box 1 inside the rotating frame 32 through a rotating shaft. The fourth gear 39 and the second gear 34 are close to two adjacent quadrants of the rotating frame 32. A second arc-shaped toothed ring 38 meshing with the second gear 34 is installed on the inner wall of the rotating frame 32, and the arc length of the second arc-shaped toothed ring 38 is the rotation axis. A first arcuate gear ring 37 meshing with a fourth gear 39 is installed on the inner wall of the rotating frame 32, and the arc length of the first arcuate gear ring 37 is three quarters of the circumference of the inner wall of the rotating frame 32. The rotation starting ends of the second arcuate gear ring 38 of the first arcuate gear ring 37 are flush with each other, and the starting ends of the first arcuate gear ring 37 and the second arcuate gear ring 38 first pass through the second gear 34 and then pass through the fourth gear 39. A first gear ring 33 is installed on the side wall of the rotating frame 32, and a motor 40 is installed on the side wall of the cleaning box 1. The output end of the motor 40 is installed with a first gear 31, and the first gear 31 and the first gear ring 33 are meshed with each other.

[0032] When in use, the motor 40 is started, and the output end of the motor 40 drives the first gear 31 to rotate, the first gear 31 drives the first gear ring 33 to rotate, the first gear ring 33 drives the rotating frame 32 to rotate, the rotating frame 32 drives the first arc gear ring 37 and the second arc gear ring 38 to rotate, the second arc gear ring 38 first meshes with the second gear 34, the second arc gear ring 38 drives the second gear 34 to rotate, the second gear 34 drives the rotating rod 36 and the driving rod 3 to rotate, the driving rod 3 drives the first leak hole conveyor belt 7 to rotate, so that the first leak hole conveyor belt 7 transports coal blocks in a direction away from the sorting box 20, When the second arc-shaped toothed ring 38 finishes meshing with the second gear 34, the first arc-shaped toothed ring 37 meshes with the fourth gear 39, the fourth gear 39 drives the third gear 35 to rotate, the third gear 35 drives the rotating rod 36 and the driving rod 3 to rotate, the driving rod 3 drives the first leak hole conveyor belt 7 to rotate, so that the first leak hole conveyor belt 7 transports the coal blocks in the direction of the sorting box 20. Since the length of the first arc-shaped toothed ring 37 is greater than the length of the second arc-shaped toothed ring 38, the distance of the coal blocks transported to the sorting box 20 is greater than the distance transported away from the sorting box 20, thereby realizing reciprocating cleaning and transportation of the coal blocks.

[0033] The drying mechanism includes a drying box 9, both ends of which are respectively installed on the upper ends of the side walls of the cleaning box 1 and the side walls of the sorting box 20, and a second leaky hole conveyor belt 10 for conveying coal blocks is horizontally arranged inside the drying box 9. A collecting bucket 8 for collecting coal blocks output by the first leaky hole conveyor belt 7 is installed on the drying box 9 above the input end of the second leaky hole conveyor belt 10, and a plurality of hot air blowers 11 for drying the coal blocks are installed on the top of the drying box 9.

[0034] A second baffle 12 for preventing coal blocks from falling is mounted on the belt side wall above the second leak hole conveyor belt 10, and the second baffle 12 is installed on the inner wall of the drying box 9. An inclined baffle for preventing coal blocks from falling is installed on the inner wall of the drying box 9 near the side of the collecting bucket 8 close to the cleaning box 1, and the lower end of the inclined baffle is obliquely installed on the upper end of the second baffle 12.

[0035] The conveying mechanism includes a fifth leak hole conveyor belt 26, which is arranged obliquely downward inside the sorting box 20, and the upper end of the fifth leak hole conveyor belt 26 is arranged below the output end of the drying box 9. A plurality of second leak hole plates 13 for preventing the coal blocks from rolling are installed on the belt of the fifth leak hole conveyor belt 26, and second side baffles 18 are installed on the inner walls of the sorting box 20 on both sides of the fifth leak hole conveyor belt 26. A fourth leak hole conveyor belt 23 for outputting gangue is arranged obliquely upward inside the sorting box 20 on the output side of the fifth leak hole conveyor belt 26, and the fourth leak hole conveyor belt 23 is installed between the two second side baffles 18 A plurality of fourth leakage hole plates 22 are installed on the belt of the fourth leakage hole conveyor belt 23, a block 25 for allowing the gangue to completely enter the input end of the fourth leakage hole conveyor belt 23 is installed on the inner wall of the sorting box 20 at the output end of the fourth leakage hole conveyor belt 23, a third leakage hole conveyor belt 15 for outputting coal blocks is arranged obliquely upward inside the sorting box 20 above the output side of the fifth leakage hole conveyor belt 26, the third leakage hole conveyor belt 15 is installed between the two second side baffles 18, a plurality of third leakage hole plates 17 are installed on the belt of the third leakage hole conveyor belt 15, and a flow component for allowing the heavy suspension to flow is arranged on the inner wall of the sorting box 20.

[0036] A fifth baffle 24 for preventing coal blocks from falling is installed on both sides of the belt above the fifth leak hole conveyor belt 26, a fourth baffle 21 for preventing coal blocks from falling is installed on both sides of the belt above the fourth leak hole conveyor belt 23, and a third baffle 16 for preventing coal blocks from falling is installed on both sides of the belt above the third leak hole conveyor belt 15. The fifth baffle 24, the fourth baffle 21 and the third baffle 16 are all installed on the side wall of the second side baffle plate 18.

[0037] The flow component includes two collecting frames 14, and the two collecting frames 14 are respectively installed on the side walls of the two second side baffles 18 above the fifth leakage hole conveyor belt 26. A plurality of nozzles 41 are installed on the side walls of the collecting frames 14 facing the third leakage hole conveyor belt 15. A water supply pipe 29 is installed at the input end of the collecting frame 14. The end of the water supply pipe 29 away from the collecting frame 14 passes through the second side baffle 18 and the side wall of the sorting box 20 to be installed with a water pump 28. The water pump 28 is installed on the side wall of the sorting box 20. A water suction pipe 19 is installed at the input end of the sorting box 20. The end of the water suction pipe 19 away from the water pump 28 passes through the sorting box 20 and the second side baffle 18 and is arranged on the inner wall of the second side baffle 18 below the fourth leakage hole conveyor belt 23.

[0038] When in use, the water pump 28 is started, the water pump 28 extracts the heavy suspension through the water suction pipe 19, and then transports the heavy suspension to the inside of the collection frame 14 through the water supply pipe 29. The collection frame 14 transports the heavy suspension to the inside of the sorting box 20 through the nozzle 41, thereby making the heavy suspension flow.

[0039] At the same time, the fifth leaky hole conveyor belt 26 slowly transports the coal blocks into the heavy suspension inside the sorting box 20. Under the action of the heavy suspension, the gangue and the coal blocks are separated. Under the action of the flow force of the heavy suspension, the coal blocks drift to the third leaky hole conveyor belt 15 and are output through the third leaky hole conveyor belt 15. The gangue is transported to the fourth leaky hole conveyor belt 23 and is output through the fourth leaky hole conveyor belt 23.

[0040] Working principle of a coal washing equipment with screening mechanism:

[0041] When in use, the motor 40 is started, and the output end of the motor 40 drives the first gear 31 to rotate, the first gear 31 drives the first gear ring 33 to rotate, the first gear ring 33 drives the rotating frame 32 to rotate, the rotating frame 32 drives the first arc gear ring 37 and the second arc gear ring 38 to rotate, the second arc gear ring 38 first meshes with the second gear 34, the second arc gear ring 38 drives the second gear 34 to rotate, the second gear 34 drives the rotating rod 36 and the driving rod 3 to rotate, the driving rod 3 drives the first leak hole conveyor belt 7 to rotate, so that the first leak hole conveyor belt 7 transports coal blocks in a direction away from the sorting box 20, When the second arc-shaped toothed ring 38 finishes meshing with the second gear 34, the first arc-shaped toothed ring 37 meshes with the fourth gear 39, the fourth gear 39 drives the third gear 35 to rotate, the third gear 35 drives the rotating rod 36 and the driving rod 3 to rotate, the driving rod 3 drives the first leak hole conveyor belt 7 to rotate, so that the first leak hole conveyor belt 7 transports the coal blocks in the direction of the sorting box 20. Since the length of the first arc-shaped toothed ring 37 is greater than the length of the second arc-shaped toothed ring 38, the distance of the coal blocks transported to the sorting box 20 is greater than the distance transported away from the sorting box 20, thereby realizing reciprocating cleaning and transportation of the coal blocks.

[0042] The first leaky conveyor belt 7 transports the coal blocks to the collecting bucket 8, the collecting bucket 8 transports the coal blocks to the second leaky conveyor belt 10, the hot air blower 11 dries the coal blocks, and the second leaky conveyor belt 10 transports the coal blocks to the fifth leaky conveyor belt 26.

[0043] The fifth leaky hole conveyor belt 26 slowly transports the coal blocks into the heavy suspension inside the sorting box 20. Under the action of the heavy suspension, the gangue and the coal blocks are separated. Under the action of the flow force of the heavy suspension, the coal blocks drift to the third leaky hole conveyor belt 15 and are output through the third leaky hole conveyor belt 15. The gangue is transported to the fourth leaky hole conveyor belt 23 and is output through the fourth leaky hole conveyor belt 23.

[0044] At the same time, the water pump 28 is started, the water pump 28 extracts the heavy suspension through the water suction pipe 19, and then transports the heavy suspension to the inside of the collection frame 14 through the water supply pipe 29. The collection frame 14 transports the heavy suspension to the inside of the sorting box 20 through the nozzle 41, so that the heavy suspension flows.

[0045] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

Claims

1. A coal washing and sorting device with a screening mechanism, comprising a washing box (1) and a sorting box (20), wherein the washing box (1) is filled with clean water, and the sorting box (20) is filled with heavy suspension liquid, and a first leaky hole conveyor belt (7) for washing coal is obliquely installed inside the washing box (1), wherein the input end of the first leaky hole conveyor belt (7) is arranged at a corner of the bottom of the washing box (1) away from the sorting box (20), and the output end of the first leaky hole conveyor belt (7) is obliquely upward over the side of the washing box (1) close to the sorting box (20). At the upper end of the wall, first side baffles (5) for supporting the first leaky hole conveyor belt (7) are arranged on both sides of the first leaky hole conveyor belt (7), the first side baffles (5) are installed on the inner wall of the cleaning box (1), a plurality of first leaky hole plates (2) for conveniently conveying coal blocks are installed on the belt of the first leaky hole conveyor belt (7), a water inlet pipe (27) for always conveying clean water into the cleaning box (1) is installed at the upper end of the side wall of the cleaning box (1), and a drainage pipe (30) for discharging sewage is installed at the lower end of the side wall of the cleaning box (1), characterized in that: A driving mechanism for causing the first leaky hole conveyor belt (7) to reciprocate to clean and convey coal blocks is arranged on the driving rod (3) of the first leaky hole conveyor belt (7), a drying mechanism for removing moisture from the coal blocks is arranged between the cleaning box (1) and the sorting box (20), and a conveying mechanism for sorting and conveying coal blocks is arranged inside the sorting box (20).

2. The coal washing and sorting equipment with a screening mechanism according to claim 1, characterized in that: A first baffle (6) for preventing coal blocks from falling is slidably sleeved on both sides of the belt above the first leak hole conveyor belt (7), and a V-shaped baffle (4) for blocking coal blocks so that the coal blocks completely fall onto the first leak hole conveyor belt (7) is installed on the inner wall of the cleaning box (1) above the input end of the first leak hole conveyor belt (7).

3. The coal washing and sorting equipment with a screening mechanism according to claim 1, characterized in that: The driving mechanism comprises a rotating rod (36), wherein the rotating rod (36) is mounted on one end of the driving rod (3), and the end of the rotating rod (36) away from the driving rod (3) passes through the side wall of the cleaning box (1) and is arranged outside the cleaning box (1). The driving rod (3) and the rotating rod (36) are integrally formed, and the side wall of the rotating rod (36) is mounted with a second gear (34) and a third gear (35) through a ratchet structure. The diameter of the second gear (34) is greater than the diameter of the third gear (35). The second gear (34) and the third gear (35) rotate in opposite directions, and only the second gear (34) and the third gear (35) are allowed to drive the rotating rod (36) to rotate. The third gear (35) enables the first leak hole conveyor belt (7) to transport the coal blocks toward the sorting box (20), and the second gear (34) enables the first leak hole conveyor belt (7) to transport the coal blocks in a direction away from the sorting box (20). The rotating rod (36) is sleeved with a rotating frame (32), and the rotating frame (32) is rotatably connected to the side wall of the cleaning box (1) through a rotating seat. A fourth gear (39) used in conjunction with the third gear (35) is arranged inside the rotating frame (32), and the fourth gear (39) and the third gear (35) are meshed with each other. The fourth gear (39) and the second gear (34) are of the same model. The fourth gear (39) is rotatably connected to the side wall of the cleaning box (1) inside the rotating frame (32) through a rotating shaft. The fourth gear (39) and the second gear (34) are close to two adjacent quadrants of the rotating frame (32). A second arc-shaped toothed ring (38) meshing with the second gear (34) is installed on the inner wall of the rotating frame (32), and the arc length of the second arc-shaped toothed ring (38) is A first arc-shaped toothed ring (37) meshing with a fourth gear (39) is mounted on the inner wall of the rotating frame (32); the arc length of the first arc-shaped toothed ring (37) is three quarters of the circumference of the inner wall of the rotating frame (32); the rotation starting ends of the second arc-shaped toothed ring (38) of the first arc-shaped toothed ring (37) are flush with each other; the starting ends of the first arc-shaped toothed ring (37) and the second arc-shaped toothed ring (38) first pass through the second gear (34) and then pass through the fourth gear (39); a first toothed ring (33) is mounted on the side wall of the rotating frame (32); a motor (40) is mounted on the side wall of the cleaning box (1); a first gear (31) is mounted on the output end of the motor (40); the first gear (31) and the first gear (33) mesh with each other.

4. The coal washing and sorting equipment with a screening mechanism according to claim 1, characterized in that: The drying mechanism comprises a drying box (9), the two ends of which are respectively mounted on the side walls of the cleaning box (1) and the upper ends of the side walls of the sorting box (20), a second leaky hole conveyor belt (10) for conveying coal blocks is horizontally arranged inside the drying box (9), a collecting hopper (8) for collecting coal blocks output from the first leaky hole conveyor belt (7) is mounted on the drying box (9) above the input end of the second leaky hole conveyor belt (10), and a plurality of hot air blowers (11) for drying the coal blocks are mounted on the top of the drying box (9).

5. The coal washing and sorting equipment with a screening mechanism according to claim 4, characterized in that: A second baffle (12) for preventing coal blocks from falling is sleeved on the belt side wall above the second leak hole conveyor belt (10), and the second baffle (12) is installed on the inner wall of the drying box (9). An inclined baffle for preventing coal blocks from falling is installed on the inner wall of the drying box (9) on the side of the collecting hopper (8) close to the cleaning box (1), and the lower end of the inclined baffle is obliquely installed on the upper end of the second baffle (12).

6. The coal washing and sorting equipment with a screening mechanism according to claim 1, characterized in that: The conveying mechanism comprises a fifth leaky hole conveyor belt (26), the fifth leaky hole conveyor belt (26) is arranged obliquely downward inside the sorting box (20), the upper end of the fifth leaky hole conveyor belt (26) is arranged below the output end of the drying box (9), a plurality of second leaky hole plates (13) for preventing coal blocks from rolling are installed on the belt of the fifth leaky hole conveyor belt (26), the inner walls of the sorting box (20) on both sides of the fifth leaky hole conveyor belt (26) are both installed with second side baffles (18), and a fourth leaky hole conveyor belt (23) for outputting gangue is arranged obliquely upward inside the sorting box (20) on the output side of the fifth leaky hole conveyor belt (26) 3), the fourth leak hole conveyor belt (23) is installed between the two second side baffles (18), and a plurality of fourth leak hole plates (22) are installed on the belt of the fourth leak hole conveyor belt (23), and a third leak hole conveyor belt (15) for outputting coal blocks is arranged obliquely upward inside the sorting box (20) above the output side of the fifth leak hole conveyor belt (26), and the third leak hole conveyor belt (15) is installed between the two second side baffles (18), and a plurality of third leak hole plates (17) are installed on the belt of the third leak hole conveyor belt (15), and a flow component for making the heavy suspension flow is arranged on the inner wall of the sorting box (20).

7. The coal washing and sorting equipment with a screening mechanism according to claim 6, characterized in that: A stopper (25) is installed on the inner wall of the sorting box (20) at the output end of the fourth leaky hole conveyor belt (23) to allow the gangue to completely enter the input end of the fourth leaky hole conveyor belt (23).

8. The coal washing and sorting equipment with a screening mechanism according to claim 6, characterized in that: A fifth baffle (24) for preventing coal blocks from falling is installed on both sides of the upper belt of the fifth leak hole conveyor belt (26); a fourth baffle (21) for preventing coal blocks from falling is installed on both sides of the upper belt of the fourth leak hole conveyor belt (23); a third baffle (16) for preventing coal blocks from falling is installed on both sides of the upper belt of the third leak hole conveyor belt (15); and the fifth baffle (24), the fourth baffle (21) and the third baffle (16) are all installed on the side wall of the second side baffle plate (18).

9. The coal washing and sorting equipment with a screening mechanism according to claim 6, characterized in that: The flow component comprises two collecting frames (14), the two collecting frames (14) are respectively mounted on the side walls of the two second side baffles (18) above the fifth leak hole conveyor belt (26), a plurality of nozzles (41) are mounted on the side wall of the collecting frame (14) facing the third leak hole conveyor belt (15), a water supply pipe (29) is mounted on the input end of the collecting frame (14), the end of the water supply pipe (29) away from the collecting frame (14) passes through the second side baffle (18) and the side wall of the sorting box (20) and is mounted with a water pump (28), the water pump (28) is mounted on the side wall of the sorting box (20), a water suction pipe (19) is mounted on the input end of the sorting box (20), the end of the water suction pipe (19) away from the water pump (28) passes through the sorting box (20) and the second side baffle (18) and is arranged on the inner wall of the second side baffle (18) below the fourth leak hole conveyor belt (23).

10. The coal washing and sorting equipment with a screening mechanism according to claim 4, characterized in that: A triangular support rib plate for supporting the drying box (9) is installed on one side of the lower end of the drying box (9) close to the cleaning box (1) and the sorting box (20).

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