Multi-level density sorting production line for traditional Chinese medicine decoction pieces and control method thereof

Abstract

The invention discloses a traditional Chinese medicine decoction piece multi-level density sorting production line and a control method thereof, and belongs to the technical field of traditional Chinese medicine decoction piece sorting. The traditional Chinese medicine decoction piece multi-level density sorting production line comprises a dust removal bin, a hopper is arranged on the top face of the dust removal bin and communicates with the dust removal bin, and a first through hole and a second through hole are formed in the two end faces of the dust removal bin correspondingly; a winnowing bin is arranged on one side of the dust removal bin, a fan is arranged at the bottom end of the winnowing bin, a first decoction piece recycling pipe, a second decoction piece recycling pipe and a third decoction piece recycling pipe are arranged on the side, away from the dust removal bin, of the winnowing bin, and the first decoction piece recycling pipe, the second decoction piece recycling pipe and the third decoction piece recycling pipe communicate with the winnowing bin. A conveying assembly used for conveying the traditional Chinese medicine decoction pieces into the winnowing bin is arranged on the dust removal bin, and an overturning assembly used for overturning the traditional Chinese medicine decoction pieces is arranged in the dust removal bin. The method has the effect of improving the production quality of the traditional Chinese medicine decoction pieces.

Description

Technical Field

[0001] The present invention relates to the technical field of sorting traditional Chinese medicine decoction pieces, and particularly relates to a multi-level density sorting production line for traditional Chinese medicine decoction pieces and a control method thereof. Background Art

[0002] Traditional Chinese medicine decoction pieces refer to traditional Chinese medicines directly used clinically after being processed and prepared. Traditional Chinese medicine decoction pieces are a type of traditional Chinese medicine drink and are processed into sheet-shaped traditional Chinese medicines. There are many classifications of traditional Chinese medicine decoction pieces. According to different processing methods, they can be divided into ordinary traditional Chinese medicine decoction pieces, traditional Chinese medicine instant decoction pieces, etc.

[0003] During the production process of traditional Chinese medicine decoction pieces, impurities or defective products of different densities are often mixed. Traditional sorting relies on manual visual inspection or single-parameter screening equipment, resulting in low efficiency and high error rates, thereby reducing the production quality of traditional Chinese medicine decoction pieces. Summary of the Invention

[0004] In order to improve the problem that during the production process of traditional Chinese medicine decoction pieces, impurities or defective products of different densities are often mixed, making it inconvenient to sort the impurities and defective products, thereby reducing the production quality of traditional Chinese medicine decoction pieces, the present application provides a multi-level density sorting production line for traditional Chinese medicine decoction pieces and a control method thereof.

[0005] In the first aspect, the multi-level density sorting production line for traditional Chinese medicine decoction pieces provided by the present application adopts the following technical solutions: A multi-level density sorting production line for traditional Chinese medicine decoction pieces includes a dust removal bin. A hopper is provided on the top surface of the dust removal bin, and the hopper is communicated with the dust removal bin. Through holes one and two are respectively opened on both end faces of the dust removal bin. A fan is arranged in the through hole one. An air separation bin is arranged on one side of the dust removal bin. A fan is arranged at the bottom end of the air separation bin. On the side of the air separation bin away from the dust removal bin, there are a decoction piece recovery pipe one, a decoction piece recovery pipe two, and a decoction piece recovery pipe three, and the decoction piece recovery pipe one, the decoction piece recovery pipe two, and the decoction piece recovery pipe three are respectively communicated with the air separation bin. A conveying component for conveying traditional Chinese medicine decoction pieces into the air separation bin is arranged on the dust removal bin, and a turning component for turning the traditional Chinese medicine decoction pieces is arranged in the dust removal bin.

[0006] By adopting the above technical solutions, the traditional Chinese medicine decoction pieces are poured into the dust removal bin through the hopper, and then the fan is started. The turning component turns the traditional Chinese medicine decoction pieces in the dust removal bin, and the fan blows air towards the traditional Chinese medicine decoction pieces, so that the wind blows out the dust impurities in the traditional Chinese medicine decoction pieces through the through port two. The traditional Chinese medicine decoction pieces after dust removal are conveyed into the air separation bin through the conveying component. The fan in the air separation bin blows the traditional Chinese medicine decoction pieces upwards, making the traditional Chinese medicine decoction pieces suspended in the air separation bin, and different-quality traditional Chinese medicine decoction pieces are discharged through the decoction piece recovery pipe one, the decoction piece recovery pipe two, and the decoction piece recovery pipe three, thereby improving the production quality of traditional Chinese medicine decoction pieces.

[0007] Preferably, a diversion chamber is fixed to one end of the dust removal chamber away from the fan. The second through hole is communicated with the diversion chamber. A collection box is arranged below the dust removal chamber, and the collection box is located directly below the diversion chamber.

[0008] By adopting the above technical solution, the fan blows the dust and impurities in the traditional Chinese medicine slices towards the second through port, and the dust flows into the collection box through the diversion chamber, so as to facilitate the collection of the dust and impurities.

[0009] Preferably, the turning assembly includes two rotating rings rotatably arranged in the dust removal chamber. The two rotating rings are respectively located at both ends of the dust removal chamber. A plurality of scraping plates are fixed between the two rotating rings. A connecting ring is arranged inside the rotating ring. A plurality of connecting rods are fixed between the connecting ring and the rotating ring. A rotating shaft passes through between the two connecting rings, and the rotating shaft is fixedly connected with the connecting ring. A driving assembly for driving the rotating shaft to rotate is arranged on the dust removal chamber.

[0010] By adopting the above technical solution, when the traditional Chinese medicine slices are poured into the dust removal chamber, the driving assembly is started to drive the rotating shaft to rotate by the driving assembly, the rotating shaft drives the connecting ring to rotate, the connecting ring drives the rotating ring to rotate through the connecting rod, and the rotating ring drives the scraping plate to rotate, so that the scraping plate scrapes up the traditional Chinese medicine slices during rotation. When the traditional Chinese medicine slices move to the highest point following the scraping plate, the traditional Chinese medicine slices fall, so that when the fan blows towards the traditional Chinese medicine slices, it is convenient for the wind to blow out the impurities and dust in the traditional Chinese medicine slices.

[0011] Preferably, the driving assembly includes a motor arranged on the top surface of the dust removal chamber. A first belt pulley is arranged on the output shaft of the motor. A second belt pulley is arranged at one end of the rotating shaft. A first transmission belt is wound around the first belt pulley and the second belt pulley.

[0012] By adopting the above technical solution, the motor is started, the output shaft of the motor drives the first belt pulley to rotate, the first belt pulley drives the first transmission belt to rotate, and the first transmission belt drives the second belt pulley to rotate, so that the second belt pulley drives the rotating shaft to rotate.

[0013] Preferably, the fan includes a mounting ring arranged in the first through hole. A driving ring is arranged inside the mounting ring. Fixed rings are sleeved on both ends of the outer peripheral surface of the driving ring. The fixed rings are rotatably connected with the driving ring. A plurality of support rods are fixed between the outer peripheral surface of the fixed ring and the inner peripheral surface of the mounting ring. A plurality of fan blades are fixed on the outer peripheral surface of the driving ring. A toothed ring is arranged on the inner peripheral surface of the driving ring. A gear is arranged on the outer peripheral surface of the rotating shaft. The gear meshes with the toothed ring.

[0014] By adopting the above technical solution, when the shaft rotates, the shaft drives the gear to rotate, the gear drives the gear ring to rotate, and the gear ring drives the drive ring to rotate, so that the drive ring drives the fan blades to rotate, so that the fan blades blow air toward the Chinese herbal medicine slices.

[0015] Preferably, a discharge port is provided on the inner circumference of the air separation bin, and the discharge port passes through the bottom surface of the air separation bin. The conveying assembly includes a feed bin arranged on the bottom surface of the air separation bin, and the feed bin is communicated with the discharge port. The feed bin is fixedly connected to the side opposite to the air separation bin, and the feed bin is communicated with the air separation bin. A transmission shaft is rotatably arranged in the feed bin, and spiral blades are fixed on the outer circumference of the transmission shaft. A synchronization part for driving the transmission shaft to rotate is arranged on the rotating shaft.

[0016] By adopting the above technical scheme, the dust-removed Chinese herbal medicine slices fall into the feed bin through the discharge port. When the rotating shaft rotates, the rotating shaft drives the synchronous part to rotate, so that the synchronous part drives the transmission shaft to rotate, and the transmission shaft drives the spiral blade to rotate, so that the spiral blade transports the Chinese herbal medicine slices to the air separation bin for air separation during the rotation process.

[0017] Preferably, the synchronous component includes a pulley three arranged on the rotating shaft, a pulley four is arranged at one end of the transmission shaft away from the air separation bin, and a transmission belt two is arranged on the pulley three and the pulley four.

[0018] By adopting the above technical solution, when the rotating shaft rotates, the rotating shaft drives the third pulley to rotate, the third pulley drives the second transmission belt to rotate, the second transmission belt drives the fourth pulley to rotate, and the fourth pulley drives the transmission shaft to rotate.

[0019] Preferably, a plug interface is provided on the side of the dust removal bin, the plug interface is communicated with the discharge port, and a blanking plate is inserted into the plug interface.

[0020] By adopting the above technical scheme, a feeding plate is inserted into the plug-in port, and the size of the discharge port is adjusted by moving the feeding plate, so as to facilitate the control of the feeding speed of the Chinese herbal medicine slices in the dust removal bin, and further facilitate the blowing and dust removal of the Chinese herbal medicine slices multiple times when there are a lot of dust and impurities in the Chinese herbal medicine slices.

[0021] Preferably, a filter is provided in the second through hole, the rotating shaft passes through the filter, a dust removal brush is fixed to the outer peripheral surface of the rotating shaft, and the bristles of the dust removal brush are in contact with the filter.

[0022] By adopting the above technical solution, a filter screen is arranged in the second through hole. When the fan blows air towards the traditional Chinese medicine decoction pieces, dust and impurities pass through the filter screen and enter the diversion bin, and the filter screen blocks the traditional Chinese medicine decoction pieces, thereby reducing the possibility of blowing the traditional Chinese medicine decoction pieces into the diversion bin when the fan blows air towards the traditional Chinese medicine decoction pieces. At the same time, a dust removal brush is arranged on the rotating shaft, so that when the rotating shaft rotates, the dust removal brush is driven to rotate, and the dust removal brush brushes off the dust adhered to the filter screen, thereby reducing the possibility that more dust adheres to the filter screen and causing the filter screen to be blocked.

[0023] In the second aspect, a multi-level density sorting control method for traditional Chinese medicine decoction pieces provided by the present application adopts the following technical solution: A multi-level density sorting control method for traditional Chinese medicine decoction pieces includes the following steps: S1: Pour the traditional Chinese medicine decoction pieces into the dust removal bin; S2: Start the motor, and the motor drives the rotating shaft to rotate through the first belt pulley, the second belt pulley and the first transmission belt, and the rotating shaft drives the fan to rotate, and the fan blows towards the traditional Chinese medicine decoction pieces to perform dust removal treatment on the traditional Chinese medicine decoction pieces; S3: The dust-removed traditional Chinese medicine decoction pieces enter the material conveying bin through the discharge port, and then the traditional Chinese medicine decoction pieces are conveyed to the air separation bin through the material conveying bin; S4: Finally, the dust-removed traditional Chinese medicine decoction pieces are sorted by multi-level density in the air separation bin.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. Pour the traditional Chinese medicine decoction pieces into the dust removal bin through the hopper, then start the fan, and turn over the traditional Chinese medicine decoction pieces in the dust removal bin through the turning assembly, so that the fan blows air towards the traditional Chinese medicine decoction pieces, so that the wind blows out the dust and impurities in the traditional Chinese medicine decoction pieces through the second through port. The dust-removed traditional Chinese medicine decoction pieces are conveyed to the air separation bin through the conveying assembly. The fan in the air separation bin blows the traditional Chinese medicine decoction pieces upwards, so that the traditional Chinese medicine decoction pieces are suspended in the air separation bin, and the traditional Chinese medicine decoction pieces of different qualities are discharged through the first decoction piece recovery pipe, the second decoction piece recovery pipe and the third decoction piece recovery pipe, thereby improving the production quality of the traditional Chinese medicine decoction pieces; 2. When pouring the traditional Chinese medicine decoction pieces into the dust removal bin, start the driving assembly, and the driving assembly drives the rotating shaft to rotate, and the rotating shaft drives the connecting ring to rotate. The connecting ring drives the rotating ring to rotate through the connecting rod, and the rotating ring drives the scraper to rotate. The scraper scrapes up the traditional Chinese medicine decoction pieces during the rotation process. When the traditional Chinese medicine decoction pieces move to the highest position following the scraper, the traditional Chinese medicine decoction pieces fall, so that when the fan blows air towards the traditional Chinese medicine decoction pieces, it is convenient for the wind to blow out the impurities and dust in the traditional Chinese medicine decoction pieces; 3. A filter screen is arranged inside the second through hole. When the fan blows air towards the traditional Chinese medicine pieces, dust and impurities pass through the filter screen and enter the diversion bin, and the filter screen blocks the traditional Chinese medicine pieces, thereby reducing the possibility of blowing the traditional Chinese medicine pieces into the diversion bin when the fan blows air towards the traditional Chinese medicine pieces. At the same time, a dust removal brush is arranged on the rotating shaft, so that when the rotating shaft rotates, the dust removal brush is driven to rotate, and the dust removal brush brushes off the dust adhering to the filter screen, thereby reducing the possibility that too much dust adheres to the filter screen and causing the filter screen to be blocked. Brief Description of the Drawings

[0025] Figure 1 is a schematic diagram of the overall structure of the multi-level density sorting production line for traditional Chinese medicine pieces in the embodiment of the present application.

[0026] Figure 2 is a cross-sectional view of the dust removal bin in the embodiment of the present application.

[0027] Figure 3 is a schematic diagram of the structure of the fan in the embodiment of the present application.

[0028] Figure 4 is a cross-sectional view of the diversion bin in the embodiment of the present application.

[0029] Figure 5 is a cross-sectional view of the air separation bin in the embodiment of the present application.

[0030] Reference Signs: 1, dust removal bin; 11, hopper; 12, rotating ring; 13, scraper; 14, connecting ring; 15, connecting rod; 16, rotating shaft; 17, first support leg; 2, first through hole; 21, second through hole; 22, fan; 221, mounting ring; 222, driving ring; 223, fixing ring; 224, support rod; 225, fan blade; 226, gear ring; 227, gear; 3, motor; 31, first belt pulley; 32, second belt pulley; 33, first transmission belt; 4, filter screen; 41, dust removal brush; 42, diversion bin; 43, collection box; 5, air separation bin; 51, first traditional Chinese medicine piece recovery pipe; 52, second traditional Chinese medicine piece recovery pipe; 53, third traditional Chinese medicine piece recovery pipe; 54, fan; 55, second support leg; 6, discharge port; 61, material conveying bin; 62, transmission shaft; 63, spiral blade; 64, third belt pulley; 65, fourth belt pulley; 66, second transmission belt; 67, insertion interface; 68, blanking plate; 69, diversion plate. Detailed Description of the Embodiment

[0031] The following will further describe the present application in detail Figures 1-5 in conjunction with the attached

[0032] The embodiment of the present application discloses a multi-level density sorting production line for traditional Chinese medicine pieces.

[0033] Refer to Figure 1 and Figure 2, A multi - level density sorting production line for traditional Chinese medicine decoction pieces includes a dust removal bin 1. Support legs one 17 are fixed at the bottom corners of the dust removal bin 1. A hopper 11 is fixed on the top surface of the dust removal bin 1, and the hopper 11 is communicated with the dust removal bin 1. Two rotating rings 12 are rotatably arranged in the dust removal bin 1. The two rotating rings 12 are respectively located at both ends of the dust removal bin 1. A plurality of scraping plates 13 are fixed between the two rotating rings 12, and the plurality of scraping plates 13 are arranged at equal intervals along the circumferential direction of the rotating ring 12. A connecting ring 14 is arranged inside the rotating ring 12. The central axis of the connecting ring 14 is collinear with the central axis of the rotating ring 12. A plurality of connecting rods 15 are fixed between the connecting ring 14 and the rotating ring 12. A rotating shaft 16 passes through between the two connecting rings 14, and the rotating shaft 16 is fixedly connected with the connecting ring 14.

[0034] Refer to Figure 2 and Figure 3 , One end face of the dust removal bin 1 is provided with a through - hole one 2. A fan 22 is arranged in the through - hole one 2. The fan 22 includes a mounting ring 221 fixed in the through - hole one 2. A driving ring 222 is arranged inside the mounting ring 221. The central axis of the driving ring 222 is collinear with the central axis of the mounting ring 221. Fixed rings 223 are sleeved at both ends of the outer peripheral surface of the driving ring 222. The fixed rings 223 are rotatably connected with the rotating ring 12. A plurality of support rods 224 are fixed between the outer peripheral surface of the fixed ring 223 and the inner peripheral surface of the mounting ring 221. A plurality of fan blades 225 are fixed on the outer peripheral surface of the driving ring 222, and the plurality of fan blades 225 are arranged at equal intervals along the outer peripheral surface of the driving ring 222. A toothed ring 226 is fixed on the inner peripheral surface of the driving ring 222. A gear 227 is sleeved and fixed on the outer peripheral surface of the rotating shaft 16, and the gear 227 meshes with the toothed ring 226. A motor 3 is fixed at one end of the top surface of the dust removal bin 1. A pulley one 31 is sleeved and fixed on the output shaft of the motor 3. A pulley two 32 is sleeved and fixed at one end of the rotating shaft 16. A transmission belt one 33 is wound around the pulley one 31 and the pulley two 32.

[0035] Refer to Figure 1 and Figure 4 , Another end face of the dust removal bin 1 is provided with a through - hole two 21. A filter screen 4 is fixed in the through - hole two 21. The mesh diameter of the filter screen 4 is smaller than the diameter of the decoction pieces. The rotating shaft 16 passes through the filter screen 4, and the rotating shaft 16 is rotatably connected with the filter screen 4. A dust removal brush 41 is fixed on the outer peripheral surface of the rotating shaft 16. The bristles of the dust removal brush 41 are abutted against the filter screen 4, and the dust removal brush 41 is located on the side of the filter screen 4 away from the fan 22. A diversion bin 42 is fixed at one end of the dust removal bin 1 away from the fan 22. The through - hole two 21 is communicated with the diversion bin 42. A collection box 43 is arranged below the dust removal bin 1, and the collection box 43 is located directly below the diversion bin 42.

[0036] Refer to Figure 1 , Figure 4 and Figure 5A wind selection bin 5 is arranged on one side of the dust removal bin 1, and supporting legs 2 55 are fixed at the bottom corners of the wind selection bin 5, and a fan 54 is installed at the inner bottom end of the wind selection bin 5. A slice recovery pipe 1 51, a slice recovery pipe 2 52 and a slice recovery pipe 3 53 are fixed at equal intervals vertically on the side of the wind selection bin 5 away from the dust removal bin 1, and the slice recovery pipe 1 51, the slice recovery pipe 2 52 and the slice recovery pipe 3 53 are respectively connected to the wind selection bin 5.

[0037] Reference Figure 1 , Figure 4 and Figure 5 , a discharge port 6 is provided on the inner circumference of the dust removal bin 1, and the discharge port 6 passes through the bottom surface of the air separation bin 5. A feed bin 61 is fixed on the bottom surface of the dust removal bin 1, and the feed bin 61 is connected with the discharge port 6. One end of the feed bin 61 close to the air separation bin 5 passes through the guide bin 42 and is fixedly connected to the side of the air separation bin 5, and the feed bin 61 is connected with the air separation bin 5. Two inclined guide plates 69 are fixed on the top surface of the feed bin 69, and the top ends of the two guide plates 69 are fixedly connected, and the two end surfaces of the guide plates 69 are respectively fixedly connected to the end surface of the dust removal bin 1 and the inner side surface of the guide bin 42. A transmission shaft 62 is rotatably installed in the feed bin 61, and a spiral blade 63 is fixed on the outer circumference of the transmission shaft 62. The end of the rotating shaft 16 away from the air separation bin 5 passes through the side of the feed bin 61 away from the air separation bin 5. A pulley 3 64 is fixedly mounted on one end of the rotating shaft 16 away from the wind selection bin 5, a pulley 4 65 is fixedly mounted on one end of the transmission shaft 62 away from the wind selection bin 5, and a transmission belt 2 66 is arranged on the pulley 3 64 and the pulley 4 65. A plug-in interface 67 is provided on the side of the dust removal bin 1, the plug-in interface 67 is connected to the discharge port 6, and a material discharge plate 68 is inserted into the plug-in interface 67.

[0038] The implementation principle of a multi-level density sorting production line for Chinese herbal medicine slices in the embodiment of the present application is as follows: Chinese herbal medicine slices are poured into the dust removal bin 1 through the hopper 11, the motor 3 is started, the output shaft of the motor 3 drives the pulley 1 31 to rotate, the pulley 1 31 drives the transmission belt 1 33 to rotate, the transmission belt 1 33 drives the pulley 2 32 to rotate, the pulley 2 32 drives the rotating shaft 16 to rotate, the rotating shaft 16 drives the connecting ring 14 to rotate, the connecting ring 14 drives the mounting ring 221 to rotate, the mounting ring 221 drives the scraper 13 to rotate, and the scraper 13 rotates during the rotation process. During the process, the Chinese herbal medicine slices are lifted up, and at the same time, the rotating shaft 16 drives the gear 227 to rotate, and the gear 227 drives the ring gear 226 to rotate, so that the ring gear 226 drives the driving ring 222 to rotate, and the driving ring 222 drives the fan blades 225 to rotate, so that the fan blades 225 blow air toward the Chinese herbal medicine slices, so that the dust and impurities in the Chinese herbal medicine slices follow the wind through the filter screen 4 into the guide bin 42, and the dust and impurities flow into the collecting box 43 along the guide bin 42, so that the dust and impurities in the Chinese herbal medicine slices are separated from the Chinese herbal medicine slices, thereby improving the sorting quality of the Chinese herbal medicine slices.

[0039] The Chinese herbal medicine pieces after removing dust and impurities enter the material conveying bin 61 through the discharge port 6. When the rotating shaft 16 rotates, the rotating shaft 16 drives the third belt pulley 64 to rotate. The third belt pulley 64 drives the second transmission belt 66 to rotate. The second transmission belt 66 drives the fourth belt pulley 65 to rotate, so that the fourth belt pulley 65 drives the transmission shaft 62 to rotate. The transmission shaft 62 drives the spiral blade 63 to rotate, so that the spiral blade 63 conveys the Chinese herbal medicine pieces to the air separation bin 5 during rotation. Then, the air blower 54 is started, and the air blower 54 blows the Chinese herbal medicine pieces upward. The Chinese herbal medicine pieces with different qualities are discharged from the first herbal medicine recovery pipe 51, the second herbal medicine recovery pipe 52 and the third herbal medicine recovery pipe 53 respectively, thus completing the multi-stage density sorting of the Chinese herbal medicine pieces.

[0040] The embodiment of the present application also discloses a control method for a multi-stage density sorting production line of Chinese herbal medicine pieces, including the following steps: S1: Pour the Chinese herbal medicine pieces into the dust removal bin 1; S2: Start the motor 3, so that the motor 3 drives the rotating shaft 16 to rotate through the first belt pulley 31, the second belt pulley 32 and the first transmission belt 33, so that the rotating shaft 16 drives the fan 22 to rotate, and the fan 22 blows towards the Chinese herbal medicine pieces to perform dust removal treatment on the Chinese herbal medicine pieces; S3: The Chinese herbal medicine pieces after dust removal enter the material conveying bin 61 through the discharge port 6, and then the material conveying bin 61 conveys the Chinese herbal medicine pieces to the air separation bin 5; S4: Finally, the air separation bin 5 performs multi-stage density sorting on the Chinese herbal medicine pieces after dust removal.

[0041] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited hereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A multi-level density sorting production line for traditional Chinese medicine decoction pieces, characterized in that: It includes a dust removal bin (1). A hopper (11) is arranged on the top surface of the dust removal bin (1), and the hopper (11) is communicated with the dust removal bin (1). Through holes one (2) and two (21) are respectively opened on both end faces of the dust removal bin (1). A fan (22) is arranged in the through hole one (2). An air separation bin (5) is arranged on one side of the dust removal bin (1). A blower (54) is arranged at the bottom end of the air separation bin (5). A first Chinese herbal medicine recovery pipe (51), a second Chinese herbal medicine recovery pipe (52) and a third Chinese herbal medicine recovery pipe (53) are arranged on the side of the air separation bin (5) away from the dust removal bin (1). The first Chinese herbal medicine recovery pipe (51), the second Chinese herbal medicine recovery pipe (52) and the third Chinese herbal medicine recovery pipe (53) are respectively communicated with the air separation bin (5). A conveying assembly for conveying Chinese herbal medicine into the air separation bin (5) is arranged on the dust removal bin (1), and a turning assembly for turning the Chinese herbal medicine is arranged in the dust removal bin (1).

2. The multi-stage density sorting production line for traditional Chinese medicine decoction pieces according to claim 1, characterized in that: A diversion bin (42) is fixed at one end of the dust removal bin (1) away from the fan (22). The through hole two (21) is communicated with the diversion bin (42). A collection box (43) is arranged below the dust removal bin (1), and the collection box (43) is located directly below the diversion bin (42).

3. The multi - level density sorting production line for traditional Chinese medicine decoction pieces according to claim 1, characterized in that: The turning assembly includes two rotating rings (12) rotatably arranged in the dust removal bin (1). The two rotating rings (12) are respectively located at both ends of the dust removal bin (1). A plurality of scraping plates (13) are fixed between the two rotating rings (12). A connecting ring (14) is arranged inside the rotating ring (12). A plurality of connecting rods (15) are fixed between the connecting ring (14) and the rotating ring (12). A rotating shaft (16) is arranged between the two connecting rings (14), and the rotating shaft (16) is fixedly connected with the connecting ring (14). A driving assembly for driving the rotating shaft (16) to rotate is arranged on the dust removal bin (1).

4. A multi-level density sorting production line for traditional Chinese medicine decoction pieces according to claim 3, characterized in that: The driving assembly includes a motor (3) arranged on the top surface of the dust removal bin (1). A first belt pulley (31) is arranged on the output shaft of the motor (3). A second belt pulley (32) is arranged at one end of the rotating shaft (16). A first transmission belt (33) is wound around the first belt pulley (31) and the second belt pulley (32).

5. A multi-level density sorting production line for traditional Chinese medicine decoction pieces according to claim 4, characterized in that: The fan (22) includes a mounting ring (221) arranged in the through hole one (2). A driving ring (222) is arranged inside the mounting ring (221). Fixed rings (223) are sleeved on both ends of the outer peripheral surface of the driving ring (222). The fixed rings (223) are rotatably connected with the driving ring (222). A plurality of support rods (224) are fixed between the outer peripheral surface of the fixed ring (223) and the inner peripheral surface of the mounting ring (221). A plurality of fan blades (225) are fixed on the outer peripheral surface of the driving ring (222). A toothed ring (226) is arranged on the inner peripheral surface of the driving ring (222). A gear (227) is arranged on the outer peripheral surface of the rotating shaft (16), and the gear (227) is meshed with the toothed ring (226).

6. The multi - level density sorting production line for traditional Chinese medicine decoction pieces according to claim 5, wherein: The inner peripheral surface of the air separation bin (5) is provided with a discharge port (6), and the discharge port (6) penetrates through the bottom surface of the air separation bin (5). The conveying assembly includes a material conveying bin (61) arranged on the bottom surface of the air separation bin (5). The material conveying bin (61) is communicated with the discharge port (6). The side surface of the material conveying bin (61) opposite to the air separation bin (5) is fixedly connected. The material conveying bin (61) is communicated with the air separation bin (5). A transmission shaft (62) is rotatably arranged in the material conveying bin (61), and a spiral blade (63) is fixed on the outer peripheral surface of the transmission shaft (62). A synchronizing member for driving the transmission shaft (62) to rotate is arranged on the rotating shaft (16).

7. A multi-level density sorting production line for traditional Chinese medicine decoction pieces according to claim 6, characterized in that: The synchronizing member includes a third belt pulley (64) arranged on the rotating shaft (16). A fourth belt pulley (65) is arranged at one end of the transmission shaft (62) far away from the air separation bin (5). A second transmission belt (66) is arranged on the third belt pulley (64) and the fourth belt pulley (65).

8. A multi-level density sorting production line for traditional Chinese medicine decoction pieces, characterized in that: An insertion port (67) is arranged on the side surface of the dust removal bin (1). The insertion port (67) is communicated with the discharge port (6). A blanking plate (68) is inserted in the insertion port (67).

9. A multi-level density sorting production line for traditional Chinese medicine decoction pieces according to claim 8, characterized in that: A filter screen (4) is arranged in the second through hole (21). The rotating shaft (16) passes through the filter screen (4). A dust removal brush (41) is fixed on the outer peripheral surface of the rotating shaft (16). The bristles of the dust removal brush (41) are abutted against the filter screen (4).

10. A multi-level density sorting control method for traditional Chinese medicine decoction pieces. According to the multi-level density sorting production line for traditional Chinese medicine decoction pieces described in any one of claims 1-9, it is characterized in that, It includes the following steps: S1: Pour the traditional Chinese medicine decoction pieces into the dust removal bin (1); S2: Start the motor (3), so that the motor (3) drives the rotating shaft (16) to rotate through the first belt pulley (31), the second belt pulley (32) and the first transmission belt (33), so that the rotating shaft (16) drives the fan (22) to rotate, and the fan (22) blows towards the traditional Chinese medicine decoction pieces to perform dust removal treatment on the traditional Chinese medicine decoction pieces; S3: The dust-removed traditional Chinese medicine decoction pieces enter the material conveying bin (61) through the discharge port (6), and then the material conveying bin (61) conveys the traditional Chinese medicine decoction pieces into the air separation bin (5); S4: Finally, the air separation bin (5) performs multi-stage density sorting on the dust-removed traditional Chinese medicine decoction pieces.

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