An automatic slag discharge device for a vertical coal mill

Abstract

The present invention belongs to the technical field of slag crushing, and specifically refers to an automatic slag discharging device for a vertical coal mill, which includes a conveying box body, a crushing box body, a slag box body, a floating type material limiting mechanism and an anti-blocking type discharging mechanism. The crushing box body is arranged on one side of the conveying box body, and the crushing box body is arranged in a U shape. The conveying box body is communicated with the crushing box body. The slag box body is arranged on the upper wall of the end of the conveying box body far away from the crushing box body, and the slag box body is arranged in a through manner. The floating type material limiting mechanism is arranged inside the conveying box body, and the anti-blocking type discharging mechanism is arranged on the conveying box body. The floating type material limiting mechanism includes a sliding mechanism and a weight sensing mechanism. The present invention can maintain the uniformity of slag feeding, reduce the probability of blockage of the crushing structure, and can reduce the internal dust content during the process of slag conveying and crushing.

Description

Technical Field

[0001] The present invention belongs to the technical field of slag crushing, and specifically refers to an automatic slag discharging device for a vertical coal mill. Background Technique

[0002] In the process of coal processing, especially when using a vertical coal mill for grinding, since the raw coal may contain a certain amount of other materials such as gravel, stones, and coal gangue, the grindability of these materials is usually worse than that of pure raw coal. Therefore, after being jointly ground in the vertical coal mill, a certain amount of coal slag will be formed. The worse the coal quality, the more coal slag will be discharged, and the particle diameter will also increase accordingly.

[0003] Currently, the existing automatic slag discharging devices have the following problems:

[0004] The existing automatic slag discharging devices do not have the ability to maintain the uniformity of slag feeding, which easily leads to the accumulation of slag blocks, affects the normal operation of the crushing structure, and causes overload or blockage of the crushing structure. Moreover, when the traditional automatic slag discharging device crushes the slag, a large amount of dust will be generated, which causes great harm to the environment and operators. Therefore, it cannot meet the current usage requirements of automatic slag discharging devices. Summary of the Invention

[0005] In view of the above situation, to overcome the defects of the existing technology, this solution provides an automatic slag discharging device for a vertical coal mill that can maintain the uniformity of slag feeding, reduce the probability of blockage of the crushing structure, and reduce the internal dust content during the transportation and crushing of the slag.

[0006] The technical solution adopted by this solution is as follows: An automatic slag discharging device for a vertical coal mill includes a conveying box body, a crushing box body, and a slag box body, and further includes a floating type material limiting mechanism and an anti-blocking type discharging mechanism. The crushing box body is arranged on one side of the conveying box body, the crushing box body is arranged in a U shape, the conveying box body is connected and arranged with the crushing box body, the slag box body is arranged on the upper wall of one end of the conveying box body far away from the crushing box body, and the slag box body is arranged in a through manner;

[0007] The floating type material limiting mechanism includes a sliding mechanism and a weight sensing mechanism;

[0008] The sliding mechanism is arranged on the conveying box body, and the weight sensing mechanism is arranged on the side wall of the sliding mechanism;

[0009] The sliding mechanism includes a chute, a sliding frame, and a folding curtain;

[0010] The chutes are symmetrically arranged on the inner walls of both sides of the conveying box body, the chutes are arranged in a through manner, the sliding frame is slidably arranged on the inner wall of the chute, and the folding curtain is arranged between the upper wall of the sliding frame and the top wall of the chute;

[0011] The weight sensing mechanism includes a floating magnet and a weight sensing electromagnet;

[0012] A plurality of the floating magnets are arranged on one side of the sliding frame away from the conveying box body, and a plurality of the weight-sensing electromagnets are symmetrically arranged on two side walls at both ends of the bottom of the conveying box body, and the floating magnets and the weight-sensing electromagnets are arranged oppositely.

[0013] Furthermore, the anti-blocking type discharging mechanism includes a blanking mechanism, a conveying mechanism, a material blocking mechanism and a crushing mechanism;

[0014] The blanking mechanism is arranged at one end of the conveying box body close to the slag box body, the conveying mechanism is arranged on the sliding mechanism, the material blocking mechanism is arranged at one end of the conveying box body close to the crushing box body, and the crushing mechanism is arranged inside the crushing box body.

[0015] Still further, the blanking mechanism includes a blanking cylinder, a blanking chute, a closing frame and a blocking plate. The blanking cylinders are symmetrically arranged on two side walls at both ends of the top of the conveying box body. The blanking chute is arranged on one side of the conveying box body away from the crushing box body, and the blanking chute is arranged in a penetrating manner. The closing frame is arranged at the power end of the blanking cylinder. The blocking plate is arranged on one side of the closing frame close to the conveying box body, and one side of the blocking plate away from the closing frame penetrates through the blanking chute and fits with the bottom wall of the slag box body.

[0016] Even further, the conveying mechanism includes a conveying shaft, a toothed roller, a toothed conveyor belt, an anti-wear and anti-slip belt, a conveying motor, a motor slot and a motor seat. The conveying shafts are symmetrically arranged between the sliding frames, and the conveying shafts are rotatably connected with the sliding frames. The toothed rollers are arranged on the outer sides of the conveying shafts. The toothed conveyor belt is wound around the outer sides of the toothed rollers, and the toothed conveyor belt and the toothed rollers are engaged through tooth-shaped protrusions and tooth-shaped depressions. A plurality of the anti-wear and anti-slip belts are arranged on the outer side of the toothed conveyor belt. The motor slot is arranged on the inner wall of one end of the conveying box body close to the crushing box body, and the motor slot is arranged in a penetrating manner. The motor seat penetrates through the motor slot and is arranged on the side wall of the sliding frame. The conveying motor is arranged on one side of the motor seat away from the sliding frame, and the power end of the conveying motor penetrates through the motor seat and the sliding frame and is connected with the conveying shaft.

[0017] Even further, the material blocking mechanism includes a round-head material blocking plate and a blocking arc plate. The round-head material blocking plate is arranged between the conveying box body and the crushing box body. The blocking arc plate is slidably arranged on one side of the round-head material blocking plate close to the toothed conveyor belt and the anti-wear and anti-slip belt. One end of the blocking arc plate away from the round-head material blocking plate is arranged on the outer sides of the toothed conveyor belt and the anti-wear and anti-slip belt, and the blocking arc plate is arranged in a fitting manner with the toothed conveyor belt and the anti-wear and anti-slip belt.

[0018] Furthermore, the crushing mechanism includes a crushing motor, a crushing shaft, a main crushing roller, a linkage gear, a crushing frame, a driven crushing roller, and a gear shaft. Multiple groups of the crushing frames are symmetrically arranged on both sides of the crushing box body. The main crushing rollers are symmetrically arranged on the inner walls at both ends of the crushing box body. The main crushing rollers are rotatably arranged between the inner walls of the crushing box body. The driven crushing rollers are rotatably arranged on the inner walls of the crushing box body between the main crushing rollers. The crushing motor is arranged on the side wall of the crushing frame at one end of the crushing box body close to the main crushing roller. The crushing shaft penetrates through the crushing frame and is arranged between the main crushing roller and the power end of the crushing motor. The gear shaft penetrates through the crushing frame and the crushing box body and is connected to the driven crushing roller and the main crushing roller at the end of the crushing box body far from the conveying box body. The linkage gear is arranged at one end of the gear shaft far from the driven crushing roller, and the linkage gears are meshed with each other.

[0019] Furthermore, a controller is arranged on one side of the conveying box body far from the crushing box body.

[0020] Furthermore, the controller is electrically connected to the weight-sensing electromagnet, the blanking cylinder, the conveying motor, and the crushing motor respectively.

[0021] The beneficial effects obtained by adopting the above structure are as follows:

[0022] Compared with the prior art, this solution combines the gravity conveying structure with the tumbling dust-removing mechanism. Through the set floating type material-limiting mechanism and anti-blocking type discharging mechanism, with the mutual cooperation of the sliding mechanism, the weight-sensing mechanism, the blanking mechanism, the conveying mechanism, the material-blocking mechanism, and the crushing mechanism, when the toothed conveyor belt and the wear-resistant and anti-slip belt convey a large amount of slag, due to the blocking effect of the round-head material-blocking plate, only the slag that crosses the round-head material-blocking plate can enter the crushing box body for crushing operation, avoiding too much slag from entering the crushing box body, and reducing the probability of the crushing structure being overloaded or blocked due to too many slag blocks. During the continuous movement of the toothed conveyor belt and the wear-resistant and anti-slip belt, by using the anti-slip setting of the wear-resistant and anti-slip belt, the slag conveyed to one end of the conveying box body close to the round-head material-blocking plate tumbles and accumulates on the upper walls of the toothed conveyor belt and the wear-resistant and anti-slip belt. The dust on the surface of the slag enters the inside of the shielding arc plate through the gap as the toothed conveyor belt and the wear-resistant and anti-slip belt move. The dust inside the shielding arc plate falls to the bottom of the conveying box body for placement, thereby being able to reduce the probability of a large amount of dust being generated during the crushing of the slag and reducing the harm of the dust to the environment and the operators. Description of the Drawings

[0023] Figure 1 is the overall structural schematic diagram of this solution;

[0024] Figure 2 is the front view three-dimensional diagram of this solution;

[0025] Figure 3Schematic diagram of the combined structure of the conveying box body, crushing box body and slag material box body of this solution;

[0026] Figure 4 Schematic diagram of the combined structure of the sliding mechanism and conveying mechanism of this solution;

[0027] Figure 5 Front view of this solution;

[0028] Figure 6 Left view of this solution;

[0029] Figure 7 Right view of this solution;

[0030] Figure 8 Top view of this solution;

[0031] Figure 9 Is Figure 8 Partial sectional view of A-A of;

[0032] Figure 10 Is Figure 2 Partial enlarged structural view of part I of;

[0033] Figure 11 Is Figure 4 Partial enlarged structural view of part II of.

[0034] Among them, 1. Conveying box body, 2. Crushing box body, 3. Slag material box body, 4. Floating type material limiting mechanism, 5. Sliding mechanism, 6. Chute, 7. Sliding frame, 8. Folding curtain, 9. Weight sensing mechanism, 10. Floating magnet, 11. Weight sensing electromagnet, 12. Anti-blocking type discharging mechanism, 13. Feeding mechanism, 14. Feeding cylinder, 15. Feeding chute, 16. Closing frame, 17. Blocking plate, 18. Conveying mechanism, 19. Conveying shaft, 20. Toothed roller, 21. Toothed conveyor belt, 22. Wear-resistant and anti-slip belt, 23. Conveying motor, 24. Material blocking mechanism, 25. Round head material blocking plate, 26. Blocking arc plate, 27. Crushing mechanism, 28. Crushing motor, 29. Crushing shaft, 30. Active crushing roller, 31. Linkage gear, 32. Controller, 33. Motor slot, 34. Motor seat, 35. Crushing frame, 36. Driven crushing roller, 37. Gear shaft.

[0035] The attached drawings are used to provide a further understanding of this solution, and constitute a part of the specification. Together with the embodiments of this solution, they are used to explain this solution and do not constitute a limitation to this solution. Specific implementation manners

[0036] Next, the technical solutions in the embodiments of this solution will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this solution. Obviously, the described embodiments are only a part of the embodiments of this solution, rather than all the embodiments; based on the embodiments in this solution, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of this solution.

[0037] In the description of this solution, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing this solution and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this solution.

[0038] As Figures 1-11 shown, an automatic slag discharge device for a vertical coal mill proposed in this solution includes a conveying box body 1, a crushing box body 2, a slag material box body 3, a floating type material limiting mechanism 4, and an anti-blocking type discharging mechanism 12. The crushing box body 2 is arranged on one side of the conveying box body 1. The crushing box body 2 is arranged in a U shape. The conveying box body 1 is communicated with the crushing box body 2. The slag material box body 3 is arranged on the upper wall of one end of the conveying box body 1 away from the crushing box body 2. The slag material box body 3 is arranged in a through manner. The floating type material limiting mechanism 4 is arranged inside the conveying box body 1. The anti-blocking type discharging mechanism 12 is arranged on the conveying box body 1. The floating type material limiting mechanism 4 includes a sliding mechanism 5 and a weight sensing mechanism 9. The sliding mechanism 5 is arranged on the conveying box body 1. The weight sensing mechanism 9 is arranged on the side wall of the sliding mechanism 5. The anti-blocking type discharging mechanism 12 includes a blanking mechanism 13, a conveying mechanism 18, a material blocking mechanism 24, and a crushing mechanism 27. The blanking mechanism 13 is arranged at one end of the conveying box body 1 close to the slag material box body 3. The conveying mechanism 18 is arranged on the sliding mechanism 5. The material blocking mechanism 24 is arranged at one end of the conveying box body 1 close to the crushing box body 2. The crushing mechanism 27 is arranged inside the crushing box body 2.

[0039] The sliding mechanism 5 includes a chute 6, a sliding frame 7, and a folding curtain 8. The chutes 6 are symmetrically arranged on the inner walls of both sides of the conveying box body 1. The chutes 6 are arranged in a through manner. The sliding frame 7 is slidably arranged on the inner wall of the chute 6. The folding curtain 8 is arranged between the upper wall of the sliding frame 7 and the top wall of the chute 6. The weight sensing mechanism 9 includes a floating magnet 10 and a weight sensing electromagnet 11. Multiple groups of the floating magnets 10 are arranged on the side of the sliding frame 7 away from the conveying box body 1. Multiple groups of the weight sensing electromagnets 11 are symmetrically arranged on the side walls of both ends of the bottom of the conveying box body 1. The floating magnet 10 and the weight sensing electromagnet 11 are arranged opposite to each other.

[0040] The blanking mechanism 13 includes a blanking cylinder 14, a blanking chute 15, a closing frame 16 and a blocking plate 17. The blanking cylinders 14 are symmetrically arranged on the side walls at both ends of the top of the conveying box body 1. The blanking chute 15 is arranged on the side of the conveying box body 1 away from the crushing box body 2, and the blanking chute 15 is arranged in a through manner. The closing frame 16 is arranged at the power end of the blanking cylinder 14. The blocking plate 17 is arranged on the side of the closing frame 16 close to the conveying box body 1. The side of the blocking plate 17 away from the closing frame 16 penetrates through the blanking chute 15 and fits with the bottom wall of the slag material box body 3. The conveying mechanism 18 includes a conveying shaft 19, a toothed roller 20, a toothed conveyor belt 21, an anti-wear and anti-slip belt 22, a conveying motor 23, a motor slot 33 and a motor seat 34. The conveying shafts 19 are symmetrically arranged between the sliding frames 7, and the conveying shafts 19 are rotatably connected to the sliding frames 7. The toothed rollers 20 are arranged on the outer sides of the conveying shafts 19. The toothed conveyor belt 21 is wound around the outer sides of the toothed rollers 20. The toothed conveyor belt 21 and the toothed rollers 20 are engaged through tooth-shaped protrusions and tooth-shaped depressions. A plurality of groups of the anti-wear and anti-slip belts 22 are arranged on the outer side of the toothed conveyor belt 21. The motor slot 33 is arranged on the inner wall of one end of the conveying box body 1 close to the crushing box body 2, and the motor slot 33 is arranged in a through manner. The motor seat 34 penetrates through the motor slot 33 and is arranged on the side wall of the sliding frame 7. The conveying motor 23 is arranged on the side of the motor seat 34 away from the sliding frame 7. The power end of the conveying motor 23 penetrates through the motor seat 34 and the sliding frame 7 and is connected to the conveying shaft 19. The material blocking mechanism 24 includes a round-head material blocking plate 25 and a material blocking arc plate 26. The round-head material blocking plate 25 is arranged between the conveying box body 1 and the crushing box body 2. The material blocking arc plate 26 is slidably arranged on the side of the round-head material blocking plate 25 close to the toothed conveyor belt 21 and the anti-wear and anti-slip belt 22. One end of the material blocking arc plate 26 away from the round-head material blocking plate 25 is arranged on the outer sides of the toothed conveyor belt 21 and the anti-wear and anti-slip belt 22, and the material blocking arc plate 26 is arranged in a fitting manner with the toothed conveyor belt 21 and the anti-wear and anti-slip belt 22. The crushing mechanism 27 includes a crushing motor 28, a crushing shaft 29, a main crushing roller 30, a linkage gear 31, a crushing frame 35, a driven crushing roller 36 and a gear shaft 37. A plurality of groups of the crushing frames 35 are symmetrically arranged on both sides of the crushing box body 2. The main crushing rollers 30 are symmetrically arranged on the inner walls at both ends of the crushing box body 2, and the main crushing rollers 30 are rotatably arranged between the inner walls of the crushing box body 2. The driven crushing roller 36 is rotatably arranged on the inner wall of the crushing box body 2 between the main crushing rollers 30. The crushing motor 28 is arranged on the side wall of the crushing frame 35 at one end of the crushing box body 2 close to the main crushing roller 30. The crushing shaft 29 penetrates through the crushing frame 35 and is arranged between the main crushing roller 30 and the power end of the crushing motor 28. The gear shaft 37 penetrates through the crushing frame 35 and the crushing box body 2 and is connected to the driven crushing roller 36 and the main crushing roller 30 at one end of the crushing box body 2 away from the conveying box body 1. The linkage gear 31 is arranged at one end of the gear shaft 37 away from the driven crushing roller 36, and the linkage gears 31 are engaged with each other.

[0041] A controller 32 is arranged on the side of the conveying box body 1 away from the crushing box body 2.

[0042] The controller 32 is electrically connected to the gravity sensing electromagnet 11, the blanking cylinder 14, the conveying motor 23, and the crushing motor 28 respectively.

[0043] The model of the controller 32 is SYC89C52RC-401.

[0044] During specific use, the controller 32 controls the gravity sensing electromagnet 11 to start. The gravity sensing electromagnet 11 is energized to generate magnetism. The gravity sensing electromagnet 11 and the floating magnet 10 are arranged with the same poles. The gravity sensing electromagnet 11 is fixed on the bottom side wall of the conveying box body 1 and pushes the floating magnet 10 through repulsion. The floating magnet 10 drives the sliding frame 7 to slide and rise along the sliding groove 6. The sliding frame 7 drives the folding curtain 8 to be wound and folded. The upper walls of the toothed conveyor belt 21 and the wear-resistant anti-slip belt 22 are horizontally arranged with the upper wall of the round head baffle 25.

[0045] During the operation of the vertical coal mill, the staff needs to regularly check the slag discharge pipe. When the slag discharge pipe is full, manual slag discharge is carried out. The slag discharged from multiple vertical coal mills enters the inside of the slag box body 3 through the slag discharge pipe and is placed. The slag that enters the inside of the slag box body 3 falls onto the upper wall of the blocking plate 17. When the inside of the slag box body 3 is full of slag, the controller 32 controls the blanking cylinder 14 to start. The power end of the blanking cylinder 14 extends and drives the blocking plate 17 away from the bottom wall of the slag box body 3 through the closing frame 16. The slag box body 3 is communicated with the conveying box body 1. The slag inside the slag box body 3 falls onto the toothed conveyor belt 21 and the wear-resistant anti-slip belt 22. The magnetic field bearing capacity between the floating magnet 10 and the gravity sensing electromagnet 11 increases. When the weight of the sliding frame 7 is greater than the magnetic field bearing capacity between the floating magnet 10 and the gravity sensing electromagnet 11, the sliding frame 7 drives the toothed conveyor belt 21 and the wear-resistant anti-slip belt 22 to slide down along the sliding groove 6. The conveying motor 23 slides down along the motor groove 33 through the motor seat 34. At this time, the upper walls of the toothed conveyor belt 21 and the wear-resistant anti-slip belt 22 are lower than the upper wall of the round head baffle 25. The more slag blocks there are on the upper walls of the toothed conveyor belt 21 and the wear-resistant anti-slip belt 22, the lower the height of the sliding frame 7.

[0046] The controller 32 controls the conveying motor 23 to start, and the conveying motor 23 drives the conveying shaft 19 to rotate through the power end, and the conveying shaft 19 uses the toothed protrusion to drive the toothed conveyor belt 21 to rotate around the toothed roller 20, and the toothed conveyor belt 21 drives the slag on the upper wall to move toward one end of the round head baffle plate 25. Due to the blocking effect of the round head baffle plate 25, the toothed conveyor belt 21 drives the slag to roll through the wear-resistant and anti-skid belt 22. During the rolling, the dust on the outer side of the slag falls off to the toothed conveyor belt 21 and the upper wall of the wear-resistant and anti-skid belt 22. Since the wear-resistant and anti-skid belt 22 is protruded on the surface of the toothed conveyor belt 21, there is a gap between the arc baffle plate 26 and the toothed conveyor belt 21 and the wear-resistant and anti-skid belt 22. The dust of the slag falling on the upper wall of the toothed conveyor belt 21 and the wear-resistant and anti-skid belt 22 enters the inside of the arc baffle plate 26 along the movement trajectory, and the dust entering the inside of the arc baffle plate 26 falls to the bottom of the conveying box 1 for placement;

[0047] The toothed conveyor belt 21 and the wear-resistant and anti-skid belt 22 are continuously moved under the drive of the conveying motor 23, and a large amount of slag is accumulated at one end of the conveying box 1 near the round-head baffle plate 25. The height of the round-head baffle plate 25 is lower than the heights of the other sides of the conveying box 1, so that the slag above the upper wall of the round-head baffle plate 25 can fall into the crushing box 2. When the slag on the upper wall of the toothed conveyor belt 21 and the wear-resistant and anti-skid belt 22 is reduced, the bearing capacity of the magnetic field between the floating magnet 10 and the weight-sensing electromagnet 11 is reduced, and the weight-sensing electromagnet 11 is fixed on the bottom side of the conveying box 1. The wall pushes the floating magnet 10 through repulsive force, and the floating magnet 10 drives the sliding frame 7 to slide and rise along the slide groove 6, so that the slag material under the top wall of the round head baffle plate 25 rises, and the raised slag material passes over the round head baffle plate 25 and enters the crushing box 2. As the slag material on the upper wall of the toothed conveyor belt 21 and the wear-resistant and anti-skid belt 22 gradually decreases, the bearing capacity of the magnetic field between the floating magnet 10 and the weight-sensing electromagnet 11 gradually decreases, until the toothed conveyor belt 21 and the wear-resistant and anti-skid belt 22 are reset to a position horizontal with the upper wall of the round head baffle plate 25, completing the conveying operation of the slag material;

[0048] The controller 32 controls the starting of the crushing motor 28. The crushing motor 28 drives the rotation of the crushing shaft 29 through the power end. The crushing shaft 29 drives the rotation of the active crushing roller 30. The active crushing roller 30 at the end of the crushing box body 2 close to the conveying box body 1 rotates clockwise, and the active crushing roller 30 at the end of the crushing box body 2 far from the conveying box body 1 rotates counterclockwise. The counterclockwise rotating active crushing roller 30 drives the rotation of the linkage gear 31 through the gear shaft 37. The linkage gears 31 mesh with each other. The linkage gear 31 drives the rotation of the driven crushing roller 36 through the gear shaft 37. The driven crushing roller 36 rotates clockwise. The slag falling into the crushing box body 2 at the end close to the round head baffle 25 inside the conveying box body 1 is evenly spread inside the crushing box body 2. Under the action of the active crushing roller 30 and the driven crushing roller 36, the larger slag blocks are decomposed into smaller particles, which helps with subsequent processing and utilization. The granular slag falls below the crushing box body 2. Just repeat the above operation during the next use.

[0049] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0050] The above describes the present solution and its implementation manner. Such a description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present solution, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the creative purpose of the present solution, design similar structural forms and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present solution.

Claims

1. An automatic slag discharging device for a vertical coal mill, comprising a conveying box body, a crushing box body and a slag material box body, characterized in that: It further includes a floating material limiting mechanism and an anti-blocking material discharging mechanism. The crushing box body is arranged on one side of the conveying box body. The crushing box body is U-shaped. The conveying box body is communicated with the crushing box body. The slag material box body is arranged on the upper wall of the end of the conveying box body away from the crushing box body. The slag material box body is through-set. The floating material limiting mechanism includes a sliding mechanism and a weight sensing mechanism. The sliding mechanism is arranged on the conveying box body, and the weight sensing mechanism is arranged on the side wall of the sliding mechanism. The sliding mechanism includes a chute, a sliding frame and a folding curtain. The chutes are symmetrically arranged on the inner walls of both sides of the conveying box body. The chutes are through-set. The sliding frame is slidably arranged on the inner wall of the chute. The folding curtain is arranged between the upper wall of the sliding frame and the top wall of the chute. The weight sensing mechanism includes a floating magnet and a weight sensing electromagnet. Multiple groups of the floating magnets are arranged on the side of the sliding frame away from the conveying box body. Multiple groups of the weight sensing electromagnets are symmetrically arranged on the side walls of both ends of the bottom of the conveying box body. The floating magnet and the weight sensing electromagnet are arranged opposite to each other. The anti-blocking material discharging mechanism includes a blanking mechanism, a conveying mechanism, a material blocking mechanism and a crushing mechanism. The blanking mechanism is arranged at the end of the conveying box body close to the slag material box body. The conveying mechanism is arranged on the sliding mechanism. The material blocking mechanism is arranged at the end of the conveying box body close to the crushing box body. The crushing mechanism is arranged inside the crushing box body. The conveying mechanism includes a conveying shaft, toothed roller wheels, a toothed conveyor belt, a wear-resistant and anti-slip belt, a conveying motor, a motor slot and a motor seat. The conveying shafts are symmetrically arranged between the sliding frames. The conveying shafts are rotationally connected to the sliding frames. The toothed roller wheels are arranged on the outer sides of the conveying shafts. The toothed conveyor belt is wound around the outer sides of the toothed roller wheels. The toothed conveyor belt and the toothed roller wheels are engaged through tooth-shaped protrusions and tooth-shaped depressions. Multiple groups of the wear-resistant and anti-slip belts are arranged on the outer side of the toothed conveyor belt. The motor slot is arranged on the inner wall of the end of the conveying box body close to the crushing box body. The motor slot is through-set. The motor seat penetrates through the motor slot and is arranged on the side wall of the sliding frame. The conveying motor is arranged on the side of the motor seat away from the sliding frame. The power end of the conveying motor penetrates through the motor seat and the sliding frame and is connected to the conveying shaft.

2. The automatic slag discharging device for a vertical coal mill according to claim 1, characterized in that: The blanking mechanism includes a blanking cylinder, a blanking chute, a closing frame and a blocking plate. The blanking cylinders are symmetrically arranged on the side walls of both ends of the top of the conveying box body. The blanking chute is arranged on the side of the conveying box body away from the crushing box body. The blanking chute is through-set. The closing frame is arranged on the power end of the blanking cylinder. The blocking plate is arranged on the side of the closing frame close to the conveying box body. The side of the blocking plate away from the closing frame penetrates through the blanking chute and fits with the bottom wall of the slag material box body.

3. An automatic slag discharging device for a vertical coal mill according to claim 1, characterized in that: The material blocking mechanism includes a round-head material blocking plate and a blocking arc plate. The round-head material blocking plate is arranged between the conveying box body and the crushing box body. The blocking arc plate is slidably arranged on the side of the round-head material blocking plate close to the toothed conveyor belt and the wear-resistant and anti-slip belt. The end of the blocking arc plate away from the round-head material blocking plate is arranged on the outer sides of the toothed conveyor belt and the wear-resistant and anti-slip belt. The blocking arc plate is arranged in a fitting manner with the toothed conveyor belt and the wear-resistant and anti-slip belt.

4. An automatic slag discharge device for a vertical coal mill according to claim 1, characterized in that: The crushing mechanism includes a crushing motor, a crushing shaft, a main crushing roller, a linkage gear, a crushing frame, a driven crushing roller and a gear shaft. Multiple groups of the crushing frames are symmetrically arranged on both sides of the crushing box body. The main crushing rollers are symmetrically arranged on the inner walls at both ends of the crushing box body. The main crushing rollers are rotatably arranged between the inner walls of the crushing box body. The driven crushing roller is rotatably arranged on the inner wall of the crushing box body between the main crushing rollers. The crushing motor is arranged on the side wall of the crushing frame at one end of the crushing box body close to the main crushing roller. The crushing shaft penetrates through the crushing frame and is arranged between the main crushing roller and the power end of the crushing motor. The gear shaft penetrates through the crushing frame and the crushing box body and is connected to the driven crushing roller and the main crushing roller at the end of the crushing box body far from the conveying box body. The linkage gear is arranged at one end of the gear shaft far from the driven crushing roller, and the linkage gears are meshed with each other.

5. The automatic slag discharging device for a vertical coal mill according to claim 1, characterized in that: A controller is arranged on one side of the conveying box body far from the crushing box body.

6. The automatic slag discharging device for a vertical coal mill according to claim 5, characterized in that: The controller is electrically connected to the weight sensing electromagnet, the blanking cylinder, the conveying motor and the crushing motor respectively.

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