Coal grinding equipment and grinding process

Abstract

The present invention relates to the field of grinding technology, and in particular to a coal grinding device and a grinding process. The technical problem to be solved by the present invention is that the coal grinding device in the prior art cannot handle coal powder agglomeration and has low drying efficiency. The technical scheme is as follows: it includes a shell, etc., a grinding roller is installed on the top of the shell, a lower hopper is connected to the bottom of the shell, and a beating mechanism is arranged inside the shell, the beating mechanism includes a driving motor installed on one side of the shell, a cam is fixed on the output shaft of the driving motor, a sliding frame is slidably connected to one side of the shell, a roller used in conjunction with the cam is rotatably connected to the side of the sliding frame close to the driving motor, and guide grooves are symmetrically provided inside the shell. The present invention can reciprocate while the screen plate moves horizontally through the design of the beating plate, so that the surface of the screen plate and the falling coal powder are beaten and scattered, so that the contact area between the coal powder and the air is increased.

Description

Technical Field

[0001] The invention relates to the field of grinding technology, and in particular to coal grinding equipment and a grinding process. Background Art

[0002] In recent years, with the rapid development of my country's economy and modern industry, the demand for coal has become increasingly greater. During the coal combustion process, increasing the contact area between coal and oxygen in the air can make the coal burn more fully.

[0003] By grinding coal into coal powder, the combustion utilization rate of coal can be greatly improved. The coal powder grinding equipment in the prior art needs to dry the coal while grinding it to evaporate the moisture in the coal and improve the grinding effect of the coal powder. Since the drying effect of the coal is not thorough, a small amount of moisture is still contained in the coal. After the coal is ground, the water will be analyzed out, which will cause the coal powder to agglomerate. However, the inside of the coal powder agglomerate cannot be effectively dried, resulting in a decrease in the combustion utilization rate of the coal powder. Summary of the invention

[0004] In order to overcome the shortcoming that the coal grinding equipment in the prior art cannot handle coal powder agglomeration, the present invention provides a coal grinding equipment and a grinding process.

[0005] The technical solution is as follows: A coal grinding equipment comprises a shell, a grinding roller and a lower hopper, the grinding roller is installed on the top of the shell, the lower hopper is connected to the bottom of the shell, and also comprises a slapping mechanism arranged inside the shell, the slapping mechanism comprises a driving motor installed on one side of the shell, a cam is fixedly connected to the output shaft of the driving motor, a sliding frame is slidably connected to one side of the shell, a first elastic member is arranged between the sliding frame and the outer wall of the shell, a roller used in conjunction with the cam is rotatably connected to the side of the sliding frame close to the driving motor, guide grooves are symmetrically opened inside the shell, and a sieve plate is slidably connected in the guide grooves, the sieve plate is in an inverted V shape, the sliding frame is fixedly connected to the sieve plate, a number of evenly distributed rotating shafts are rotatably connected to the sieve plate, and a number of the rotating shafts are fixedly connected with slapping plates, the slapping plates are of a mesh structure, an anti-blocking component is arranged on the sieve plate to prevent the sieve plate from being blocked, and an impact mechanism for crushing coal powder blocks is arranged inside the shell.

[0006] Optionally, the anti-blocking component includes an impact block, a plurality of evenly distributed slide grooves are opened in the screen plate, the impact block is slidably connected in the plurality of slide grooves, a second elastic member is arranged between the impact block and the slide grooves, a rack is fixedly connected to the top of the impact block, and a gear meshing with the rack is fixedly connected to the bottom end of the plurality of rotating shafts.

[0007] Optionally, the impact mechanism includes a collection box symmetrically fixed to both sides of the screen plate, and the bottom of the collection box is a mesh structure.

[0008] Optionally, the impact mechanism also includes guide shafts symmetrically fixed to both sides of the top of the screen plate, the guide shafts are fixed with convex rings, the outer walls of the convex rings are fixed with sliding shafts, the top of the inner wall of the outer shell is symmetrically fixed with mounting frames, the bottom of the two mounting frames close to each other are hinged with swing rods, and one side of the swing rod is provided with a track for use with the sliding shaft.

[0009] Optionally, the impact mechanism also includes an impact plate slidably connected to the collection box, there is a gap between the bottom of the impact plate and the bottom surface of the inner wall of the collection box, a third elastic member is arranged between the top of the impact plate and the swing rod, and installation boxes are symmetrically fixed on both sides of the inner wall of the outer shell, and elastic limit blocks are slidably connected in the installation box for use with the impact plate.

[0010] Optionally, the bottom of each elastic limiting block is provided with two wedge-shaped surfaces, and the angles of the two wedge-shaped surfaces are different.

[0011] Optionally, the impact mechanism also includes a fixed sleeve, a plurality of evenly distributed fixed sleeves are fixedly connected on both sides of the impact plate, a guide sleeve is movably connected inside the fixed sleeve, a fourth elastic member is arranged between the guide sleeve and the impact plate, a guide block is installed on the outer wall of the guide sleeve, a spiral groove used in conjunction with the guide block is opened on the inner wall of the fixed sleeve, a spline shaft is slidably connected to the inner wall of the guide sleeve, one end of the spline shaft is rotatably connected to the impact plate, and the other end of the spline shaft is fixedly connected to a crushing plate.

[0012] Optionally, an air pump is also included, which is symmetrically installed on one side of the shell, the piston ends of the air pump are fixed to the side of the sliding frame close to the shell, and air pipes are symmetrically fixed inside the shell, the output ends of the air pump pass through the shell and are connected to the air pipe, the outer wall of the air pipe is connected to a number of evenly distributed high-pressure air nozzles, and the output ends of the high-pressure air nozzles are all facing the collection box.

[0013] Optionally, a connecting plate is also included, the connecting plate is symmetrically hinged at the bottom of the sliding frame, a flapping plate is symmetrically hinged at one side of the inner wall of the shell, the end of the connecting plate away from the sliding frame is hinged to the end of the flapping plate, and the two flapping plates are respectively arranged on the side of the two collection boxes away from each other.

[0014] A grinding process of a coal grinding device comprises the following steps:

[0015] S1: The staff pours the coal into the shell, and the coal is squeezed into powder after passing through the grinding roller and falls onto the surface of the sieve plate. At the same time, the driving motor is started, and the output shaft of the driving motor rotates to make the sieve plate move back and forth rapidly horizontally, and the powdered coal passes through the sieve plate and falls into the lower hopper to complete the discharge;

[0016] S2: When the screen plate moves, it drives the rotating shaft and the impact block to move synchronously. The impact block slides in a plurality of slide grooves due to inertia, thereby impacting the small coal powder agglomerates in the screen plate to crush the small coal powder agglomerates. The impact block drives the gear to rotate through the rack, and the gear drives the slapping plate to rotate through the plurality of rotating shafts, so that the slapping plate slaps the coal powder to make the coal powder more dispersed.

[0017] S3: When the screen plate moves, the convex ring is driven to move through the guide shaft, and the convex ring drives the sliding shaft to slide within the track of the swing rod and drives the swing rod to swing, and the swing rod drives the impact plate to slide through the third elastic member, and the elastic limit block blocks the impact plate to allow the third elastic member to accumulate force, and after the third elastic member accumulates force to a certain extent, it drives the impact plate to break away from the restriction of the elastic limit block and slide quickly, and the impact plate drives the spline shaft to impact and grind the large coal powder agglomerates in the collecting box;

[0018] S4: When the sliding frame moves, the air pump inflates the air pipe, so that the air pipe blows air to the coal powder in the collecting box through the high-pressure air nozzle to accelerate the drying of the coal powder. At the same time, the beating plate beats the falling coal powder to further disperse the coal powder.

[0019] The beneficial effects of the present invention are:

[0020] 1. The present invention, through the design of the slapping plate, can reciprocate while the screen plate moves horizontally, so as to slap the surface of the screen plate and the falling coal powder, increase the contact area between the coal powder and the air, improve the drying efficiency of the coal powder, and the slapping plate can initially slap the agglomerated coal powder.

[0021] 2. The present invention designs the impact block so that it can slide by inertia when the screen plate slides horizontally, so that the impact block can squeeze and crush the small coal powder agglomerates stuck in the screen plate, thereby preventing the screen from being blocked and further improving the crushing efficiency of the coal powder agglomerates.

[0022] 3. The present invention cooperates with the impact plate and the elastic limit block, so that the third elastic member can store force in the process of the swing arm pulling the impact plate through the third elastic member, thereby achieving the effect of increasing the impact force of the impact plate. Through the cooperation of the guide sleeve and the spline shaft, the crushing plate can rotate and crush the coal powder agglomerates, thereby crushing the coal powder agglomerates.

[0023] 4. The present invention can further beat the falling coal powder during the swinging process of the beating plate through the design of the beating plate, thereby increasing the looseness of the coal powder, and can make the drying gas in the shell flow during the swinging process of the beating plate, thereby further improving the drying efficiency of the coal powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the beating mechanism of the present invention;

[0026] Figure 3 It is a schematic diagram of the installation of the impact block of the present invention;

[0027] Figure 4 It is a structural schematic diagram of the impact mechanism of the present invention;

[0028] Figure 5 It is a schematic diagram of the installation of the sliding shaft of the present invention;

[0029] Figure 6 It is a schematic diagram of the installation of the elastic limit block of the present invention;

[0030] Figure 7 This is a schematic diagram of the installation of the air pump of the present invention;

[0031] Figure 8 It is a schematic diagram of the installation of the trachea of ​​the present invention;

[0032] Fig. 9 It is a schematic diagram of the installation of the flapping plate of the present invention.

[0033] Markings in the accompanying drawings: 1: housing, 2: driving motor, 3: cam, 4: sliding frame, 401: roller, 5: screen plate, 6: rotating shaft, 7: slapping plate, 8: impact block, 9: collecting box, 10: guide shaft, 11: convex ring, 12: sliding shaft, 13: mounting frame, 14: swing rod, 15: impact plate, 16: mounting box, 17: elastic limit block, 18: fixing sleeve, 19: guide sleeve, 20: guide block, 21: spline shaft, 22: crushing plate, 23: air pump, 24: air pipe, 25: connecting plate, 26: slapping plate, 100: grinding roller, 200: lower hopper. DETAILED DESCRIPTION

[0034] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Example 1

[0035] A coal grinding device, such as Figure 1-Figure 9As shown in the figure, it includes a housing 1. A grinding roller 100 is installed on the top of the housing 1, and a feeding hopper 200 is connected to the bottom of the housing 1. It also includes a flapping mechanism arranged inside the housing 1. The flapping mechanism includes a driving motor 2 installed on one side of the housing 1. A cam 3 is fixedly connected to the output shaft of the driving motor 2. A sliding frame 4 is slidably connected through one side of the housing 1. The sliding frame 4 is in a U shape. A first elastic member is arranged between the sliding frame 4 and the outer wall of the housing 1. The first elastic member is a return spring, and the first elastic member is used to reset the sliding frame 4. A roller 401 cooperating with the cam 3 is rotatably connected to one side of the sliding frame 4 close to the driving motor 2. Guide grooves are symmetrically formed inside the housing 1, and a sieve plate 5 is slidably connected in the guide grooves. The sieve plate 5 is in an inverted V shape. The sliding frame 4 is fixedly connected to the sieve plate 5. A plurality of uniformly distributed rotating shafts 6 are rotatably connected to the sieve plate 5. A plurality of flapping plates 7 are fixedly connected to the plurality of rotating shafts 6. The flapping plates 7 are in a mesh structure, so as to facilitate the flapping plates 7 to break up the caked pulverized coal. An anti-blocking component for preventing the sieve plate 5 from being blocked is arranged on the sieve plate 5. An impact mechanism for crushing pulverized coal blocks is arranged inside the housing 1.

[0036] The anti-blocking component includes impact blocks 8. A plurality of uniformly distributed sliding grooves are formed inside the sieve plate 5. The impact blocks 8 are slidably connected in the plurality of sliding grooves. A second elastic member is arranged between the impact blocks 8 and the sliding grooves. The second elastic member is a tension spring. Rack bars are fixedly connected to the tops of the impact blocks 8. Gear wheels meshing with the rack bars are fixedly connected to the bottom ends of the plurality of rotating shafts 6. When the impact blocks 8 slide, the rotation of the gear wheels driven by the rack bars can make the rotating shafts 6 rotate, so that the rotating shafts 6 drive the flapping plates 7 to flap the pulverized coal.

[0037] The impact mechanism includes collecting boxes 9 symmetrically fixedly connected to both sides of the sieve plate 5. The bottom of the collecting box 9 is in a mesh structure. The outer wall of the collecting box 9 is movably clamped into the guide grooves of the housing 1 and slides in the guide grooves. When the sieve plate 5 moves horizontally, it can drive the collecting boxes 9 to move synchronously.

[0038] The impact mechanism further includes guide shafts 10 symmetrically fixedly connected to both sides of the top of the sieve plate 5. Convex rings 11 are fixedly connected to the guide shafts 10. Slide shafts 12 are fixedly connected to one side of the two convex rings 11 away from each other. Mounting frames 13 are symmetrically fixedly connected to the top inner wall of the housing 1. The mounting frames 13 are rectangular. Swing rods 14 are hinged to the bottom of one side of the two mounting frames 13 close to each other. The swing rods 14 are in an L shape. Trajectories cooperating with the corresponding slide shafts 12 are formed on one side of the two swing rods 14 close to each other.

[0039] The impact mechanism also includes an impact plate 15 slidably connected to the collecting box 9. There is a gap between the bottom of the impact plate 15 and the bottom surface of the inner wall of the collecting box 9. When the impact plate 15 moves, its bottom can further grind the coal powder on the bottom surface of the inner wall of the collecting box 9. A third elastic member is arranged between the top of the impact plate 15 and the swing rod 14. The third elastic member is a tension spring. Installation boxes 16 are symmetrically fixed on both sides of the inner wall of the outer shell 1. Elastic limit blocks 17 used in conjunction with the impact plate 15 are slidably connected in the installation boxes 16. Blocking the impact plate 15 by the elastic limit blocks 17 can enable the third elastic member to store force.

[0040] The bottom of the elastic limiting block 17 is provided with two wedge-shaped surfaces, and the angles of the two wedge-shaped surfaces are different. The elastic limiting block 17 can block the impact plate 15 with different strengths through the two wedge-shaped surfaces.

[0041] The impact mechanism also includes a fixed sleeve 18. Several evenly distributed fixed sleeves 18 are fixedly connected to both sides of the impact plate 15. Several fixed sleeves 18 on the same side are arranged in a rectangular shape. A guide sleeve 19 is movably connected inside the fixed sleeve 18. A fourth elastic member is arranged between the guide sleeve 19 and the impact plate 15. The fourth elastic member is a compression spring. A guide block 20 is installed on the outer wall of the guide sleeve 19. A spiral groove used in conjunction with the guide block 20 is opened on the inner wall of the fixed sleeve 18. A spline shaft 21 is slidably connected to the inner wall of the guide sleeve 19. One end of the spline shaft 21 is rotatably connected to the impact plate 15, and the other end of the spline shaft 21 is fixedly connected to a crushing plate 22.

[0042] First, the staff pours the coal into the shell 1. After passing through the grinding roller 100, the coal is crushed and ground into coal powder and falls onto the surface of the screen plate 5. Then the drive motor 2 is started, and the output shaft of the drive motor 2 drives the cam 3 to rotate. The cam 3 squeezes the roller 401 to move the sliding frame 4 to the side close to the shell 1. At this time, the first elastic member between the sliding frame 4 and the shell 1 contracts, and the cam 3 continues to rotate and no longer squeezes the roller 401. At this time, the first elastic member is released to drive the sliding frame 4 to reset, thereby making the sliding frame 4 slide back and forth horizontally continuously. When the sliding frame 4 slides, it drives the screen plate 5 to move horizontally synchronously in the guide groove of the shell 1. After the screen plate 5 moves, the coal powder attached to its surface shakes, causing the coal powder to fall through the sieve holes of the sieve plate 5. Due to the incomplete drying effect of the coal, the coal The charcoal still contains a small amount of moisture. After the coal is crushed and ground by the grinding roller 100, coal powder is prone to agglomeration. When the screen plate 5 moves, it drives the rotating shaft 6 and the impact block 8 to move synchronously. The impact block 8 slides in the slide groove of the screen plate 5 due to inertia. The second elastic member between the impact block 8 and the slide groove is stretched, so that the impact block 8 can impact the coal powder agglomerates stuck in the sieve holes of the screen plate 5, and can crush the coal powder agglomerates while preventing the screen plate 5 from being blocked. When the impact block 8 slides, the gear is driven to rotate through the rack, and the gear drives the adjacent slapping plates 7 to rotate through several rotating shafts 6. The slapping plates 7 beat the coal powder in the falling state and on the screen plate 5, which can further disperse the coal powder, and can break up or even break the coal powder agglomerates, further improving the crushing effect of the coal powder.

[0043] When large coal powder agglomerates fall to the edge of the surface of the sieve plate 5 and are not hit by the hitting plate 7, the large coal powder agglomerates will roll along the edge of the surface of the sieve plate 5 into the collecting box 9. When the sieve plate 5 moves, it drives the collecting box 9 and the guide shaft 10 to move back and forth horizontally synchronously. The coal powder agglomerates roll in the collecting box 9, causing the coal powder on the surface of the coal powder agglomerates to gradually fall off. At the same time, the guide shaft 10 drives the sliding shaft 12 to move back and forth horizontally through the convex ring 11. The sliding shaft 12 drives the swing rod 14 to swing back and forth around the connection between it and the mounting frame 13 as the center of the circle by squeezing the trajectory of the swing rod 14. The swing rod 14 pulls the impact plate 15 to slide in the corresponding collecting box 9 through the third elastic member.

[0044] Initially, the impact plate 15 is fitted with the rear side of the inner wall of the corresponding collection box 9, and the elastic limit block 17 on the rear side is in a released state. The wedge-shaped surface of the elastic limit block 17 close to the side of the shell 1 is in contact with the top of the impact plate 15. When the swing arm 14 swings forward, the swing arm 14 applies a pulling force to the impact plate 15 through the third elastic member. At this time, the pulling force on the impact plate 15 cannot cause the impact plate 15 to separate from the elastic limit block 17 on the rear side. When the swing arm 14 swings forward to the limit position, the third elastic member accumulates force to the limit. At this time, the force of the third elastic member pulling the impact plate 15 can drive the impact plate 15 to break through the restriction of the elastic limit block 17. The elastic limit block 17 is forced to shrink and slide upward. After sliding, the elastic limit block 17 no longer contacts the impact plate 15, and the impact plate 1 After breaking away from the restriction, it quickly slides forward and pushes the coal powder agglomerates in the collecting box 9. Since there is a gap between the bottom of the impact plate 15 and the bottom of the inner wall of the collecting box 9, the bottom of the impact plate 15 can squeeze and crush the smaller coal powder agglomerates when it moves. At this time, the impact plate 15 drives the fixed sleeves 18 and the spline shaft 21 on both sides to slide, and the fixed sleeve 18 drives the guide sleeve 19 to slide so that the guide sleeve 19 impacts the coal powder agglomerates in the collecting box 9. The coal powder agglomerates will become loose or even directly broken after being impacted. The unbroken coal powder agglomerates are impacted to contact the front side of the inner wall of the collecting box 9. At this time, the guide sleeve 19 is blocked by the coal powder agglomerates and cannot move, and slides to the side close to the impact plate 15. The fourth elastic member between the guide sleeve 19 and the impact plate 15 is contracted by force, and the guide sleeve 19 After the crushing plate 22 is contracted, the crushing plate 22 is exposed, and at the same time, the guide sleeve 19 drives the guide block 20 to move. The guide block 20 slides along the spiral groove on the inner wall of the fixed sleeve 18 and drives the guide sleeve 19 to rotate. At this time, the guide sleeve 19 drives the crushing plate 22 to rotate through the spline shaft 21. After the crushing plate 22 rotates, the coal powder agglomerates accumulated on the front side of the inner wall of the collecting box 9 are crushed and crushed, thereby achieving the crushing of the coal powder agglomerates in the collecting box 9, and the impact plate 15 contacts and squeezes the elastic limit block 17 on the front side after moving. At this time, the impact plate 15 contacts the wedge-shaped surface of the elastic limit block 17 on the front side away from the collecting box 9. The impact plate 15 can easily squeeze and lift the elastic limit block 17. After the impact plate 15 continues to move, it no longer contacts and passes over the elastic limit block 17, and the elastic limit block 17 is released to limit the impact plate 15. When the swing rod 14 swings to the rear side, the impact plate 15 repeats the above steps to break away from the restriction of the elastic limit block 17 on the front side and slide. At this time, the fixed sleeve 18 on the rear side drives the guide sleeve 19 to slide so that the guide sleeve 19 impacts the coal powder agglomerates in the collecting box 9 and achieves the above effect, and the fixed sleeve 18 on the front side drives the guide sleeve 19 away from the front inner wall of the collecting box 9. At this time, the front guide sleeve 19 is released and reset by the fourth elastic member, and the guide block 20 drives the guide sleeve 19 to rotate and reset along the spiral groove. The guide sleeve 19 drives the crushing plate 22 to rotate and reset through the spline shaft 21. When the crushing plate 22 rotates, the coal powder attached to its surface is thrown out by rotation, and then the above steps are repeated to complete the crushing and drying of the coal powder.And the crushing and drying of coal powder agglomerates can greatly improve the quality of coal grinding products. Example 2

[0045] like Figure 1-Figure 9 As shown, an air pump 23 is also included. The air pump 23 is symmetrically installed on the front side of the outer shell 1. The piston ends of the air pump 23 are fixed to the side of the sliding frame 4 close to the outer shell 1. The air pipe 24 is symmetrically fixed in the outer shell 1. The output ends of the air pump 23 pass through the outer shell 1 and are connected to the air pipe 24. The outer wall of the air pipe 24 is connected to a plurality of evenly distributed high-pressure air nozzles, and the output ends of the high-pressure air nozzles are all facing the collecting box 9. The high-pressure air nozzles on the air pipe 24 blow air to the coal powder in the collecting box 9, which can improve the drying efficiency of the coal powder and assist the coal powder in the collecting box 9 to be discharged through the bottom of the collecting box 9.

[0046] It also includes a connecting plate 25, which is symmetrically hinged on the bottom of the sliding frame 4, and a flapping plate 26 is symmetrically hinged on one side of the inner wall of the outer shell 1. The flapping plate 26 is a hole-shaped structure, and the end of the connecting plate 25 away from the sliding frame 4 is hinged to the end of the flapping plate 26. The two flapping plates 26 are respectively arranged on the side of the two collecting boxes 9 away from each other. When the flapping plates 26 swing, they can promote the internal gas flow of the outer shell 1.

[0047] When the sliding frame 4 moves back and forth horizontally, the sliding frame 4 drives the piston end of the air pump 23 to move back and forth, so that the air pump 23 continuously injects air into the air pipe 24, and the air in the air pipe 24 is blown into the two collecting boxes 9 through the high-pressure air nozzle thereon, so that the coal powder lumps are crushed and can be quickly dried. At the same time, the sliding frame 4 drives the connecting plate 25 to move, and the connecting plate 25 drives the flapping plate 26 to swing with its connection with the outer shell 1 as the center of the circle. When the flapping plate 26 swings, the falling coal powder can be further flapped, so that the coal powder is more dispersed and the coal powder is fully in contact with the air, so that the drying efficiency of the coal powder is further improved, and when the flapping plate 26 swings, an airflow can be generated, so that the drying gas in the outer shell 1 is circulated, so that the drying efficiency of the coal powder is better, and then the coal powder falls to the lower hopper 200 through the screen plate 5 and the flapping plate 26 to complete the discharging.

[0048] A grinding process of a coal grinding device comprises the following steps:

[0049] S1: The staff pours coal into the housing 1. After passing through the grinding roller 100, the coal is squeezed into powder and falls onto the surface of the sieve plate 5. At the same time, the drive motor 2 is started. The output shaft of the drive motor 2 rotates to make the sieve plate 5 move back and forth horizontally quickly. The coal powder passes through the sieve holes of the sieve plate 5 and falls into the lower hopper 200 to complete the discharge.

[0050] S2: When the screen plate 5 moves, it drives the rotating shaft 6 and the impact block 8 to move synchronously. The impact block 8 slides in a plurality of chutes under the influence of inertia, thereby impacting the small coal powder agglomerates in the screen plate 5, so that the small coal powder agglomerates are crushed. The impact block 8 drives the gear to rotate through the rack, and the gear drives the slapping plate 7 to rotate through a plurality of rotating shafts 6, so that the slapping plate 7 slaps the coal powder to make the coal powder more dispersed;

[0051] S3: When the screen plate 5 moves, the convex ring 11 is driven to move through the guide shaft 10, and the convex ring 11 drives the sliding shaft 12 to slide in the track of the swing rod 14 and drives the swing rod 14 to swing, and the swing rod 14 drives the impact plate 15 to slide through the third elastic member, and the elastic limit block 17 blocks the impact plate 15 so that the third elastic member accumulates force. After the third elastic member accumulates force to a certain extent, it drives the impact plate 15 to break away from the restriction of the elastic limit block 17 and slide quickly, and the impact plate 15 drives the spline shaft 21 to impact and grind the coal powder agglomerates in the collecting box 9;

[0052] S4: When the sliding frame 4 moves, the air pump 23 inflates the air pipe 24, so that the air pipe 24 blows air to the coal powder in the collecting box 9 through the high-pressure air nozzle to accelerate the drying of the coal powder. At the same time, the flapping plate 26 flaps the falling coal powder to further disperse the coal powder.

[0053] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A coal grinding device, comprising a housing (1), a grinding roller (100) being mounted on the top of the housing (1), and a lower hopper (200) being connected to the bottom of the housing (1), characterized in that: The invention also comprises a flapping mechanism arranged inside the housing (1), the flapping mechanism comprising a driving motor (2) mounted on one side of the housing (1), a cam (3) being fixedly connected to the output shaft of the driving motor (2), a sliding frame (4) being slidably connected through one side of the housing (1), a first elastic member being arranged between the sliding frame (4) and the outer wall of the housing (1), a roller (401) being rotatably connected to the side of the sliding frame (4) close to the driving motor (2) and being used in conjunction with the cam (3), the The outer shell (1) is symmetrically provided with guide grooves, and a sieve plate (5) is slidably connected in the guide grooves, the sieve plate (5) is in an inverted V shape, the sliding frame (4) is fixedly connected to the sieve plate (5), the sieve plate (5) is rotatably connected to a plurality of evenly distributed rotating shafts (6), a plurality of rotating shafts (6) are fixedly connected to a slapping plate (7), the slapping plate (7) is a mesh structure, the sieve plate (5) is provided with an anti-blocking component for preventing the sieve plate (5) from being blocked, and an impact mechanism for crushing coal powder blocks is provided inside the outer shell (1); The anti-blocking component comprises an impact block (8), a plurality of evenly distributed slide grooves are provided in the screen plate (5), the impact block (8) is slidably connected in the plurality of slide grooves, a second elastic member is provided between the impact block (8) and the slide groove, a rack is fixedly connected to the top of the impact block (8), and a gear meshing with the rack is fixedly connected to the bottom of the plurality of rotating shafts (6); The impact mechanism comprises a collection box (9) symmetrically fixed to both sides of the sieve plate (5); the bottom of the collection box (9) is a mesh structure; the outer wall of the collection box (9) is movably inserted into the guide groove of the housing (1) and slides in the guide groove; The impact mechanism also includes guide shafts (10) symmetrically fixed to both sides of the top of the sieve plate (5), the guide shafts (10) are fixedly connected to convex rings (11), the outer walls of the convex rings (11) are fixedly connected to sliding shafts (12), the top of the inner wall of the shell (1) is symmetrically fixed to mounting frames (13), the bottoms of the two mounting frames (13) close to each other are hinged to swing rods (14), and one side of the swing rod (14) is provided with a track for use with the sliding shaft (12); The impact mechanism further comprises an impact plate (15) slidably connected to the collection box (9), a gap exists between the bottom of the impact plate (15) and the bottom surface of the inner wall of the collection box (9), a third elastic member is arranged between the top of the impact plate (15) and the swing rod (14), mounting boxes (16) are symmetrically fixedly connected to both sides of the inner wall of the housing (1), and elastic limit blocks (17) used in conjunction with the impact plate (15) are slidably connected to the mounting boxes (16); The bottom of each of the elastic limiting blocks (17) is provided with two wedge-shaped surfaces, and the angles of the two wedge-shaped surfaces are different; The impact mechanism further comprises a fixing sleeve (18), a plurality of evenly distributed fixing sleeves (18) are fixedly connected to both sides of the impact plate (15), a guide sleeve (19) is movably connected inside the fixing sleeve (18), a fourth elastic member is arranged between the guide sleeve (19) and the impact plate (15), a guide block (20) is installed on the outer wall of the guide sleeve (19), a spiral groove for use with the guide block (20) is formed on the inner wall of the fixing sleeve (18), a spline shaft (21) is slidably connected to the inner wall of the guide sleeve (19), one end of the spline shaft (21) is rotatably connected to the impact plate (15), and the other end of the spline shaft (21) is fixedly connected to a crushing plate (22); It also includes an air pump (23), which is symmetrically mounted on one side of the outer shell (1), the piston ends of the air pump (23) are fixedly connected to the side of the sliding frame (4) close to the outer shell (1), and the outer shell (1) is symmetrically fixed with an air pipe (24), the output end of the air pump (23) passes through the outer shell (1) and is connected to the air pipe (24), the outer wall of the air pipe (24) is connected to a plurality of evenly distributed high-pressure air nozzles, and the output ends of the high-pressure air nozzles are all facing the collection box (9).

2. A coal grinding equipment according to claim 1, characterized in that: It also includes a connecting plate (25), the connecting plate (25) is symmetrically hinged at the bottom of the sliding frame (4), a flapping plate (26) is symmetrically hinged at one side of the inner wall of the shell (1), the end of the connecting plate (25) away from the sliding frame (4) is hinged to the end of the flapping plate (26), and the two flapping plates (26) are respectively arranged on the sides of the two collecting boxes (9) away from each other.

3. The grinding process of the coal grinding equipment according to claim 2, characterized in that: The following steps are involved: S1: A worker pours coal into the housing (1), and the coal is squeezed into powder after passing through the grinding roller (100) and falls onto the surface of the sieve plate (5). At the same time, the drive motor (2) is started, and the output shaft of the drive motor (2) rotates to cause the sieve plate (5) to move back and forth horizontally at a rapid speed. The powdered coal passes through the sieve plate (5) and falls into the lower hopper (200) to complete the discharge. S2: When the screen plate (5) moves, it drives the rotating shaft (6) and the impact block (8) to move synchronously. The impact block (8) slides in a plurality of chute under the influence of inertia, thereby impacting small coal powder agglomerates in the screen plate (5) to crush the small coal powder agglomerates. The impact block (8) drives the gear to rotate through the rack, and the gear drives the slapping plate (7) to rotate through the plurality of rotating shafts (6), so that the slapping plate (7) slaps the coal powder to make the coal powder more dispersed. S3: When the screen plate (5) moves, the guide shaft (10) drives the convex ring (11) to move, the convex ring (11) drives the sliding shaft (12) to slide within the trajectory of the swing rod (14) and drives the swing rod (14) to swing, the swing rod (14) drives the impact plate (15) to slide via the third elastic member, the elastic limit block (17) blocks the impact plate (15) so that the third elastic member accumulates force, and after the third elastic member accumulates force to a certain extent, it drives the impact plate (15) to break away from the restriction of the elastic limit block (17) and slide quickly, and the impact plate (15) drives the spline shaft (21) to impact and grind large coal powder agglomerates in the collection box (9); S4: When the sliding frame (4) moves, the air pump (23) inflates the air pipe (24), so that the air pipe (24) blows air to the coal powder in the collecting box (9) through the high-pressure air nozzle to accelerate the drying of the coal powder. At the same time, the beating plate (26) beats the falling coal powder to further disperse the coal powder.

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