Automatic feeding device for coal powder grinding and polishing

Abstract

The utility model relates to the technical field of kerosene grinding and polishing, and discloses an automatic feeding device for kerosene grinding and polishing, which comprises a device shell, a first motor and a grinding mechanism, the bottom of the device shell is fixedly connected with supporting legs for supporting, and the grinding mechanism for grinding and polishing kerosene bracelets is arranged in the device shell. The right side of the device shell is fixedly connected with a first motor, the output end of the first motor is fixedly connected with a threaded rod, and the interior of the device shell is fixedly connected with a guide rod for guiding the first sliding seat. Compared with a traditional manual feeding mode, a first sliding base drives a clamping block to move so that feeding work can be conducted, the feeding device can accurately move to the blank storage position according to a preset program, then the blank is stably clamped through the clamping block installed on the feeding device, and then the blank is conveyed to the grinding mechanism to be ground and polished; therefore, the consistency of the final quality of the same batch of kerosene bracelets is ensured.

Description

Technical Field

[0001] This utility model relates to the field of coal grinding and polishing technology, and in particular to an automatic feeding device for coal grinding and polishing. Background Technology

[0002] Jet bracelets, traditional ornaments imbued with profound cultural heritage and unique artistic charm, require numerous meticulous processes during production to showcase their warm, jade-like texture and understated luster. Among these, polishing is a crucial step in determining the final product's appearance and demands extremely high technical skill. Specialized polishing equipment plays a vital role in this process.

[0003] In existing technologies, most factories still use the traditional manual feeding method, where workers place the jet bracelets to be processed one by one into the fixtures of the polishing machine. Although this method is flexible and convenient, in the process of mass production, it can lead to slight deviations in the position of different jet bracelets in the fixture. During the subsequent polishing process, due to the special properties of jet material, it is extremely sensitive to the polishing force, angle, and time. Any slight change in position can cause inconsistencies in the surface treatment effect. Therefore, even jet bracelets of the same batch and specifications may have very different gloss, smoothness, and even overall texture after undergoing the same polishing process, which directly affects the market value of the product and consumer satisfaction. Therefore, it is necessary to improve the automatic feeding device for jet polishing to solve the above problems. Utility Model Content

[0004] To overcome the problem that manual feeding can cause positional deviations between different coal ore bracelets during actual polishing, ultimately leading to quality variations among bracelets from the same batch.

[0005] The technical solution of this utility model is as follows: an automatic feeding device for grinding and polishing coal ash, including a device shell, a first motor, and a grinding mechanism. A support leg is fixedly connected to the bottom of the device shell. A grinding mechanism for grinding and polishing coal ash bracelets is installed inside the device shell. A first motor is fixedly connected to the right side of the device shell. A threaded rod is fixedly connected to the output end of the first motor. A first sliding seat is threadedly connected to the outer side of the threaded rod. A guide rod for guiding the first sliding seat is fixedly connected inside the device shell. The first sliding seat is slidably connected to the guide rod. A first... The telescopic rod has a first fixed plate fixedly connected to its bottom. The bottom of the first fixed plate is rotatably connected to a fixed shaft. A first fixed bracket is fixedly connected to the fixed shaft. A clamping block for moving the coal bracelet is provided on the outside of the first fixed bracket. A first rotating rod and a second rotating rod are rotatably connected between the clamping block and the first fixed bracket. A third telescopic rod for driving the clamping opening and closing is fixedly connected to the first fixed bracket. A first connecting bracket is fixedly connected to one end of the third telescopic rod. A fourth rotating rod is rotatably connected between the first connecting bracket and the clamping block.

[0006] Preferably, the first fixing plate has a rotating groove at a position relative to the fixing shaft, and the fixing shaft is rotatably connected inside the rotating groove.

[0007] Preferably, a second telescopic rod is fixedly connected to the first fixed plate, and a sliding rack is fixedly connected to the bottom end of the second telescopic rod. The sliding rack is slidably connected inside the first fixed plate. A rotating gear is fixedly connected to the outside of the fixed rotating shaft, and the rotating gear meshes with the outside of the sliding rack. A second motor is fixedly connected inside the device housing, and a first bevel gear is fixedly connected to the output end of the second motor. A first fixed seat is fixedly connected inside the device housing, and a first conveyor wheel is rotatably connected inside the first fixed seat. A first conveyor belt for conveying coal ore bracelets is driven to the outside of the first conveyor wheel. A second bevel gear is fixedly connected to one end of the first conveyor wheel, and the second bevel gear meshes with the outside of the first bevel gear. A second fixed seat is fixedly connected inside the device housing, and a second conveyor wheel is rotatably connected inside the second fixed seat. A second conveyor belt for conveying polished coal ore bracelets is driven to the outside of the second conveyor wheel. A third bevel gear is fixedly connected to the outside of the second conveyor wheel, and the third bevel gear meshes with the outside of the first bevel gear.

[0008] Preferably, the first fixing plate has a limiting groove at the relative position of the sliding rack, and the sliding rack is slidably connected inside the groove.

[0009] Preferably, the conveying mechanism includes a third motor, which is fixedly connected to the left side of the device housing. A first transmission wheel is fixedly connected to the output end of the third motor. A first rotating seat is rotatably connected inside the device housing. A second transmission wheel is fixedly connected to the outside of the first rotating seat. A transmission belt connects the first and second transmission wheels. A fourth telescopic rod is fixedly connected to the device housing. A second sliding plate is rotatably connected to one end of the fourth telescopic rod. The second sliding plate is slidably connected inside the first rotating seat. A first slider is slidably connected to the first rotating seat. A third connecting rod is rotatably connected between the first slider and the second sliding plate. The device consists of a rod, a first slider, and an inner support shaft for supporting the coal polishing bracelet. A second fixed plate is fixedly connected to the inside of the device housing. A fifth telescopic rod is fixedly connected to the second fixed plate. One end of the fifth telescopic rod is fixedly connected to a grinding wheel for polishing. An air supply pipe for supplying air is fixedly connected to the inside of the device housing. A cooling fan for heat dissipation is installed inside the air supply pipe. A dust collection hopper is fixedly connected to the inside of the device housing. A connecting pipe for conveying dust is fixedly connected between the dust collection hopper and the device housing. A dust collection box for centralized dust storage is slidably connected inside the device housing.

[0010] Preferably, the outer casing of the device has a rotating groove at a position relative to the first rotating seat, and the first rotating seat is rotatably connected inside the rotating groove.

[0011] Preferably, the first rotating seat has a groove at the relative position of the second sliding plate, and the second sliding plate is slidably connected inside the groove.

[0012] The beneficial effects of this utility model are:

[0013] 1. Compared to the traditional manual feeding method, the first sliding seat drives the clamping block to move, thereby performing the feeding work. It can move the blank to the storage position precisely according to the preset program. Then, the clamping block installed on it firmly clamps the blank and transports it to the grinding mechanism for grinding and polishing. This ensures the consistency of the final quality of the coal ore bracelets in the same batch, thereby avoiding the problem that the manual feeding method can cause positional deviations between different coal ore bracelets during actual grinding, which ultimately leads to the problem of quality deviations among bracelets in the same batch.

[0014] 2. By cooperating with the first bevel gear, the third bevel gear and the second bevel gear, the second motor can simultaneously drive the two stages of coal bracelet conveying and output. This greatly improves production efficiency while maintaining the operation of the entire production process, avoids energy waste caused by power source redundancy in traditional production methods, and thus saves production costs. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a cross-sectional view of the outer casing of the device of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the first sliding seat and its connected components of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the second motor and its connected components according to this utility model;

[0019] Figure 5 This is a schematic diagram of the grinding mechanism of this utility model;

[0020] Figure 6 This is a partial structural diagram of the grinding mechanism and its connected components of this utility model;

[0021] Figure 7 This is a schematic diagram of the grinding mechanism and its connected components of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Device housing; 21. First motor; 22. Threaded rod; 23. Guide rod; 24. First sliding seat; 25. First telescopic rod; 26. First fixed plate; 27. Second telescopic rod; 28. Sliding rack; 29. ​​Rotating gear; 210. Fixed shaft; 211. First fixed bracket; 212. Clamping block; 213. First rotating rod; 214. Third telescopic rod; 215. First connecting bracket; 216. Second rotating rod; 217. Second motor; 218. First bevel gear; 219. First fixed seat; 220. First conveyor wheel; 221. First conveyor belt; 222. Second bevel gear 223. Second fixed seat; 224. Second conveyor wheel; 225. Second conveyor belt; 226. Third bevel gear; 227. Fourth rotating rod; 31. Third motor; 32. First transmission wheel; 33. First rotating seat; 34. Second transmission wheel; 35. Transmission belt; 36. Fourth telescopic rod; 37. Second sliding plate; 38. First slider; 39. Third connecting rod; 310. Inner support shaft; 311. Second fixed plate; 312. Fifth telescopic rod; 313. Grinding wheel body; 314. Air duct; 315. Cooling fan body; 316. Collection hopper; 317. Connecting pipe; 318. Ash collection box; 4. Support leg. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please see Figure 1 - Figure 4This utility model provides an embodiment: an automatic feeding device for grinding and polishing coal ore, including a device housing 1, a first motor 21, and a grinding mechanism. A support leg 4 is fixedly connected to the bottom of the device housing 1. A grinding mechanism for grinding and polishing coal ore bracelets is disposed inside the device housing 1. The first motor 21 is fixedly connected to the right side of the device housing 1. A threaded rod 22 is fixedly connected to the output end of the first motor 21. A first sliding seat 24 is threadedly connected to the outside of the threaded rod 22. A guide rod 23 is fixedly connected inside the device housing 1 to guide the first sliding seat 24. The first sliding seat 24 is slidably connected to the guide rod 23. A first telescopic rod 25 is fixedly connected to the bottom of the first sliding seat 24. The bottom of the first telescopic rod 25 is fixedly... A first fixed plate 26 is fixedly connected to the bottom of the first telescopic rod 25. A fixed shaft 210 is rotatably connected to the bottom end of the first fixed plate 26. A first fixed bracket 211 is fixedly connected to the fixed shaft 210. A clamping block 212 for moving the coal bracelet is provided on the outside of the first fixed bracket 211. A first rotating rod 213 and a second rotating rod 216 are rotatably connected between the clamping block 212 and the first fixed bracket 211. A third telescopic rod 214 for opening and closing the clamping 212 is fixedly connected to the first fixed bracket 211. A first connecting bracket 215 is fixedly connected to one end of the third telescopic rod 214. A fourth rotating rod 227 is rotatably connected between the first connecting bracket 215 and the clamping block 212. When the first telescopic rod 25 extends or retracts, it causes the first fixed plate 26 to move downwards. Then, the third telescopic rod 214 moves, pushing the first connecting bracket 215 to move. When the first connecting bracket 215 moves, it cooperates with the fourth rotating rod 227, the first rotating rod 213, and the second rotating rod 216 to drive the clamping block 212 to clamp the coal bracelet that has entered the outer shell 1 of the device. After clamping, the first telescopic rod 25 retracts, causing the clamping block 212 and the coal bracelet to rise. After rising, the fixed rotating shaft 210 rotates, causing the first fixed bracket 211 and the clamping block 212 to rotate 90 degrees. Then, the first motor 21 drives the threaded rod 22 to rotate. The rotation of the threaded rod 22 causes the first sliding seat 24 to slide on the guide rod 23, thereby driving the first sliding seat 24 to slide on the guide rod 23. After the coal bracelet moves towards the grinding mechanism, the grinding mechanism limits its position, and then the clamping block 212 releases its grip on the bracelet. At this time, the threaded rod 22 reverses, causing the first sliding seat 24 to move away, and the grinding mechanism begins to grind the coal bracelet. The first fixed plate 26 has a groove at a position relative to the fixed rotating shaft 210. The fixed rotating shaft 210 is rotatably connected inside the groove. During use, the groove restricts the rotation of the fixed rotating shaft 210 to prevent it from tilting and affecting the subsequent gripping of the coal bracelet by the clamping block 212. A second telescopic rod 27 is fixedly connected to the first fixed plate 26, and a sliding rack 28 is fixedly connected to the bottom end of the second telescopic rod 27. The sliding rack 28 is slidably connected inside the first fixed plate 26.A rotating gear 29 is fixedly connected to the outside of the fixed rotating shaft 210. The rotating gear 29 meshes with the outside of the sliding rack 28. A second motor 217 is fixedly connected inside the device housing 1. A first bevel gear 218 is fixedly connected to the output end of the second motor 217. A first fixed seat 219 is fixedly connected inside the device housing 1. A first conveyor wheel 220 is rotatably connected inside the first fixed seat 219. A first conveyor belt 221 for conveying coal slurry bracelets is driven to the outside of the first conveyor wheel 220. A second bevel gear 222 is fixedly connected to one end of the first conveyor wheel 220. The second bevel gear 222 meshes with the outside of the first bevel gear 218. A second fixed seat 223 is fixedly connected inside the device housing 1. A second conveyor wheel 224 is rotatably connected inside the second fixed seat 223. An external transmission connection includes a second conveyor belt 225 for conveying the polished coal bracelets. A third bevel gear 226 is fixedly connected to the outside of the second conveyor wheel 224. The third bevel gear 226 meshes with the outside of the first bevel gear 218. Through the cooperation of the first bevel gear 218, the second bevel gear 222, and the third bevel gear 226, a second motor 217 simultaneously drives the first conveyor wheels 220 and the second conveyor wheel 224 to rotate in opposite directions. This achieves the single second motor 217 driving the first conveyor belt 221 to convey and the second conveyor belt 225 to output the coal bracelets. A limiting groove is formed on the first fixed plate 26 at the relative position of the sliding rack 28. The sliding rack 28 is slidably connected inside the groove, which restricts the sliding of the sliding rack 28, preventing it from tilting and affecting the rotation of the rotating gear 29.

[0025] Please see Figure 2 , Figure 5 - Figure 6In this embodiment, the conveying mechanism includes a third motor 31, which is fixedly connected to the left side of the device housing 1. A first transmission wheel 32 is fixedly connected to the output end of the third motor 31. A first rotating seat 33 is rotatably connected inside the device housing 1, and a second transmission wheel 34 is fixedly connected to the outside of the first rotating seat 33. A transmission belt 35 drives between the first transmission wheel 32 and the second transmission wheel 34. A fourth telescopic rod 36 is fixedly connected to the device housing 1, and a second sliding plate 37 is rotatably connected to one end of the fourth telescopic rod 36. The second sliding plate 37 is slidably connected to the first rotating seat 33. Inside the device, a first slider 38 is slidably connected to the first rotating seat 33. A third connecting rod 39 is rotatably connected between the first slider 38 and the second sliding plate 37. An inner support shaft 310 for supporting the coal polish bracelet is fixedly connected to the outside of the first slider 38. A second fixed plate 311 is fixedly connected to the inside of the device housing 1. A fifth telescopic rod 312 is fixedly connected to the second fixed plate 311. A polishing wheel body 313 for grinding and polishing is fixedly connected to one end of the fifth telescopic rod 312. An air supply pipe 314 for supplying air is fixedly connected to the inside of the device housing 1. The air supply pipe 314 is internally configured with... The device includes a cooling fan body 315 for heat dissipation. A dust collection hopper 316 is fixedly connected inside the outer casing 1. A connecting pipe 317 for conveying dust is fixedly connected between the dust collection hopper 316 and the outer casing 1. A dust collection box 318 for centralized dust storage is slidably connected inside the outer casing 1. While the cooling fan body 315 dissipates heat from the coal ore bracelet during polishing, the dust generated falls into the dust collection hopper 316. After being conveyed by the connecting pipe 317, it is collected and stored in the dust collection box 318, facilitating subsequent processing by staff. A groove is provided at a relative position of the first rotating seat 33. The first rotating seat 33 is rotatably connected to the inside of the groove. The rotation of the first rotating seat 33 is restricted by the groove to prevent the first rotating seat 33 from tilting when rotating, which would affect the subsequent offset of the inner support shaft 310 and cause the coal bracelet to slip off. A sliding groove is provided at a relative position of the first rotating seat 33 and the second sliding plate 37 is slidably connected to the inside of the sliding groove. The sliding of the second sliding plate 37 is restricted by the sliding groove to make the second sliding plate 37 slide linearly inside the first rotating seat 33, preventing the second sliding plate 37 from tilting and disengaging from the first rotating seat 33.

[0026] During operation, the second motor 217 operates, and through the cooperation of the first bevel gear 218, the third bevel gear 226, and the second bevel gear 222, it drives the first conveyor wheel 220 and the second conveyor wheel 224 on both sides to rotate synchronously. During rotation, the first conveyor belt 221 and the second conveyor belt 225 transport the coal bracelets. First, the external coal bracelets are transported to the inside of the device housing 1 by the first conveyor belt 221. Then, the first telescopic rod 25 extends and retracts, causing the first fixed plate 26 to move downwards. Then, the third telescopic rod 214 operates, pushing the first connecting bracket 215 to move. When the first connecting bracket 215 moves, it cooperates with the fourth rotating rod 227, the first rotating rod 213, and the second rotating rod 216. The first telescopic rod 25 retracts, causing the clamping block 212 to grip the coal bracelet on the first conveyor belt 221. After gripping, the first telescopic rod 25 retracts, causing the clamping block 212 and the coal bracelet to rise. After rising, the second telescopic rod 27 operates, causing the sliding rack 28 to slide. While the sliding rack 28 is sliding, it cooperates with the rotating gear 29 to drive the fixed rotating shaft 210 to rotate. When the fixed rotating shaft 210 rotates, it causes the first fixed bracket 211 and the clamping block 212 to rotate 90 degrees. Then, the first motor 21 operates, driving the threaded rod 22 to rotate. The rotation of the threaded rod 22 causes the first sliding seat 24 to slide on the guide rod 23, thereby causing the coal bracelet to move closer to the first rotating seat 33. Then, the fourth telescopic rod 36... The operation involves the fourth telescopic rod 36, which pushes the second sliding plate 37 to slide inside the first rotating seat 33. As the second sliding plate 37 slides, it drives the first slider 38 to slide, which in turn drives the inner support shaft 310 to move outward, thus contacting the inner wall of the coal ore and providing external support for the coal ore bracelet. Then, the clamping block 212 releases its grip on the coal ore bracelet. At this point, the threaded rod 22 reverses, causing the first sliding seat 24 to move away. Then, the third motor 31 operates, driving the first transmission wheel 32 to rotate. When the first transmission wheel 32 rotates, it works in conjunction with the transmission belt 35 and the second transmission wheel 34 to drive the first rotating seat 33 to rotate. When the first rotating seat 33 rotates, it is driven by the fifth telescopic rod 312... The machine operates by pushing the grinding wheel body 313 towards the coal bracelet for grinding. During grinding, the cooling fan body 315 operates to cool the coal bracelet and prevent it from overheating. At the same time, it blows the dust generated during grinding and polishing downwards, causing it to fall into the collection hopper 316. After entering the collection hopper 316, the dust is transported and guided through the connecting pipe 317 to the ash collection box 318 for centralized storage, so that the staff can align and process it later. After grinding and polishing is completed, the machine slides through the first sliding seat 24, which drives the clamping block 212 to move towards the ground coal bracelet. The clamping block 212 clamps the coal bracelet again and transports it to the second conveyor belt 225, which then transports it to the outside of the device housing 1.

[0027] Through the above steps, compared with the traditional manual feeding method, the first sliding seat 24 drives the clamping block 212 to move to carry out the feeding work. This solves the problem that the manual feeding method will cause positional deviations between different coal ore bracelets during actual polishing, ultimately leading to quality deviations among bracelets in the same batch.

Claims

1. An automatic feeding device for fine grinding and polishing of coal, comprising a device housing (1), characterized in that: It also includes a first motor (21) and a polishing mechanism. The bottom of the device housing (1) is fixedly connected to a support leg (4). The inside of the device housing (1) is equipped with a polishing mechanism for polishing the coal bracelet. The right side of the device housing (1) is fixedly connected to the first motor (21). The output end of the first motor (21) is fixedly connected to a threaded rod (22). The external thread of the threaded rod (22) is connected to a first sliding seat (24). The inside of the device housing (1) is fixedly connected to a guide rod (23) for guiding the first sliding seat (24). The first sliding seat (24) is slidably connected to the guide rod (23). The bottom of the first sliding seat (24) is fixedly connected to a first telescopic rod (25). The bottom of the first telescopic rod (25) is fixedly connected to a first fixed... The bottom end of the first fixed plate (26) is rotatably connected to a fixed shaft (210). A first fixed bracket (211) is fixedly connected to the fixed shaft (210). A clamping block (212) for clamping and moving the coal bracelet is provided on the outside of the first fixed bracket (211). A first rotating rod (213) and a second rotating rod (216) are rotatably connected between the clamping block (212) and the first fixed bracket (211). A third telescopic rod (214) for driving the clamping block (212) to open and close is fixedly connected to the first fixed bracket (211). A first connecting bracket (215) is fixedly connected to one end of the third telescopic rod (214). A fourth rotating rod (227) is rotatably connected between the first connecting bracket (215) and the clamping block (212).

2. The automatic loading device for coal fine polishing according to claim 1, characterized in that: The first fixed plate (26) has a rotating groove at the relative position of the fixed rotating shaft (210), and the fixed rotating shaft (210) is rotatably connected inside the rotating groove.

3. The automatic feeding device for coal grinding and polishing according to claim 1, characterized in that: A second telescopic rod (27) is fixedly connected to the first fixed plate (26). A sliding rack (28) is fixedly connected to the bottom end of the second telescopic rod (27). The sliding rack (28) is slidably connected inside the first fixed plate (26). A rotating gear (29) is fixedly connected to the outside of the fixed rotating shaft (210). The rotating gear (29) meshes with the outside of the sliding rack (28). A second motor (217) is fixedly connected inside the device housing (1). A first bevel gear (218) is fixedly connected to the output end of the second motor (217). A first fixed seat (219) is fixedly connected inside the device housing (1). A first conveying wheel (220) is rotatably connected inside the first fixed seat (219). The external drive connection of the first conveyor belt (221) for conveying the coal ore bracelet is connected to the first conveyor wheel (220). The second bevel gear (222) is fixedly connected to one end of the first conveyor wheel (220). The second bevel gear (222) meshes with the outside of the first bevel gear (218). The internal fixed connection of the device housing (1) is a second fixed seat (223). The internal rotatable connection of the second fixed seat (223) is a second conveyor wheel (224). The external drive connection of the second conveyor wheel (224) is a second conveyor belt (225) for conveying the polished coal ore bracelet out. The external fixed connection of the second conveyor wheel (224) is a third bevel gear (226). The third bevel gear (226) meshes with the outside of the first bevel gear (218).

4. The automatic feeding device for coal fine polishing according to claim 3, characterized in that: The first fixed plate (26) has a limiting groove at the relative position of the sliding rack (28), and the sliding rack (28) is slidably connected inside the groove.

5. The automatic feeding device for coal grinding and polishing according to claim 1, characterized in that: The conveying mechanism includes a third motor (31), which is fixedly connected to the left side of the device housing (1). The output end of the third motor (31) is fixedly connected to a first transmission wheel (32). A first rotating seat (33) is rotatably connected inside the device housing (1). A second transmission wheel (34) is fixedly connected to the outside of the first rotating seat (33). A transmission belt (35) is connected between the first transmission wheel (32) and the second transmission wheel (34). A fourth telescopic rod (36) is fixedly connected to the device housing (1). A second sliding plate (37) is rotatably connected to one end of the fourth telescopic rod (36). The second sliding plate (37) is slidably connected inside the first rotating seat (33). A first slider (38) is slidably connected to the first rotating seat (33). A third connecting rod (39) is rotatably connected between the first slider (38) and the second sliding plate (37). The first slider (38) is externally fixedly connected to an inner support shaft (310) for supporting the coal bracelet. The device housing (1) is internally fixedly connected to a second fixed plate (311). The second fixed plate (311) is fixedly connected to a fifth telescopic rod (312). One end of the fifth telescopic rod (312) is fixedly connected to a grinding wheel body (313) for grinding and polishing. The device housing (1) is internally fixedly connected to an air supply pipe (314) for conveying air. The air supply pipe (314) is internally equipped with a cooling fan body (315) for heat dissipation. The device housing (1) is internally fixedly connected to a dust collection hopper (316) for collecting dust. The dust collection hopper (316) and the device housing (1) are fixedly connected to a connecting pipe (317) for conveying dust. The device housing (1) is internally slidably connected to a dust collection box (318) for centralized dust storage.

6. The automatic loading device for coal fine polishing according to claim 5, characterized in that: The outer casing (1) of the device has a rotating groove at a position relative to the first rotating seat (33), and the first rotating seat (33) is rotatably connected inside the rotating groove.

7. The automatic feeding device for coal fine polishing according to claim 5, characterized in that: The first rotating seat (33) has a groove at the relative position of the second sliding plate (37), and the second sliding plate (37) is slidably connected inside the groove.

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