Screening equipment for grading traditional Chinese medicine decoction pieces

Abstract

The utility model relates to the field of medical supplies, in particular to screening equipment for grading traditional Chinese medicine decoction pieces. The screening equipment for grading the traditional Chinese medicine decoction pieces comprises a supporting frame, a screening box, a double-shaft motor, a first transmission assembly, a second transmission assembly and the like. A screening box is fixedly installed on the supporting frame, a double-shaft motor is fixedly installed on the middle side of the top of the screening box, a first transmission assembly is fixedly arranged on an output shaft on the left side of the double-shaft motor, and a second transmission assembly is fixedly arranged on an output shaft on the right side of the double-shaft motor. The traditional Chinese medicine decoction pieces are classified and screened through the first-stage filtering mechanism and the second-stage filtering mechanism, traditional Chinese medicines with different volumes are screened out respectively, and the screening efficiency of the traditional Chinese medicine decoction pieces is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical supplies field especially, it is a kind of screening equipment for traditional Chinese medicine decoction piece grading. BACKGROUND

[0002] Traditional Chinese medicine decoction piece is traditional Chinese medicinal material after according to traditional Chinese medicine theory, traditional Chinese medicine processing method, after processing, can be directly used in traditional Chinese medicine clinical traditional Chinese medicine. This concept shows that traditional Chinese medicinal material, traditional Chinese medicine decoction piece does not have absolute limit, and traditional Chinese medicine decoction piece includes part of traditional Chinese medicine slice after processing in producing area, original shape medicinal decoction piece and decoction piece after cutting, processing.

[0003] In traditional Chinese medicine decoction piece production process, it needs to screen traditional Chinese medicine according to the size of traditional Chinese medicine decoction piece, then carries out sub-packaging processing, but, traditional Chinese medicine decoction piece grading screening work is generally completed by artificial, this kind of work not only has great labor intensity, low efficiency, and also can influence the quality of traditional Chinese medicine decoction piece because of health problem.

[0004] Therefore, the utility model needs to design a kind of screening equipment for traditional Chinese medicine decoction piece grading. UTILITY MODEL CONTENT

[0005] In order to overcome the artificial grading screening work intensity of traditional Chinese medicine, low efficiency, the technical problem of the utility model is to provide a kind of screening equipment for traditional Chinese medicine decoction piece grading.

[0006] The technical implementation scheme of the utility model is: a kind of screening equipment for traditional Chinese medicine decoction piece grading, including support frame, screening box, double-shaft motor, transmission assembly one, transmission assembly two, first discharge block, second discharge block, third discharge block, inclined block, blanking frame, first filter mechanism and second filter mechanism, support frame is fixedly installed with screening box, blanking frame is fixedly arranged on the left side of the top of screening box, double-shaft motor is fixedly installed on the middle side of the top of screening box, transmission assembly one is fixedly arranged on the left side output shaft of double-shaft motor, transmission assembly two is fixedly arranged on the right side output shaft of double-shaft motor, first discharge block is fixedly arranged on the upper right side of screening box, second discharge block is fixedly arranged on the lower left side of screening box, third discharge block is fixedly arranged in the bottom of screening box, and one inclined block is fixedly connected on the left and right sides of third discharge block, first filter mechanism is fixedly installed in the upper part of screening box, first filter mechanism is left high right low type and is inclined, the lower side of first filter mechanism is aligned with first discharge block, second filter mechanism is fixedly arranged in the position of the lower part of first filter mechanism in screening box, second filter mechanism is left low right high type and is inclined, and the lower side of second filter mechanism is aligned with second discharge block.

[0007] Optionally, the first filtering mechanism comprises a first sliding rail, a first connecting rod, a first spring, a first filter plate, a first protruding block, a first reciprocating screw rod, a first guide rod, a first sliding block, a first cleaning block and a first protruding rod, a first sliding rail is symmetrically and fixedly installed on the upper front and rear sides of the screening box, the higher side of the two first sliding rails is fixedly connected through a first connecting rod, a plurality of first springs are fixedly connected to the lower end surface of the first connecting rod, a first filter plate is fixedly connected to the lower side of the first spring, the lower end of the first filter plate is elastically connected to the inner wall of the screening box, a plurality of first protruding blocks are symmetrically and fixedly connected to the front and rear sides of the first filter plate, a first reciprocating screw rod is rotatably installed in the front first sliding rail, the left end of the first reciprocating screw rod is rotatably arranged in the first sliding rail and the outside of the screening box, and is driven by the transmission assembly one on the left side of the double-shaft motor through a bevel gear set, a first guide rod is rotatably installed in the rear first sliding rail, a first sliding block is threadedly connected to the first reciprocating screw rod, and a first sliding block is also slidably installed on the first guide rod, a first cleaning block is rotatably connected between the two first sliding blocks, and a first protruding rod is fixedly connected to the lower end surface of each of the two first sliding blocks. The first sliding block drives the first protruding rod to contact the first protruding block during movement, and then the first filter plate is pushed down.

[0008] Optionally, the second filtering mechanism comprises a second sliding rail, a second connecting rod, a second spring, a second filter plate, a second protruding block, a second reciprocating screw rod, a second guide rod, a second sliding block, a second cleaning block and a second protruding rod, a second sliding rail is symmetrically and fixedly installed on the upper front and rear sides of the screening box, the higher side of the two second sliding rails is fixedly connected through a second connecting rod, a plurality of second springs are fixedly connected to the lower end surface of the second connecting rod, a second filter plate is fixedly connected to the lower side of the second spring, the lower end of the second filter plate is elastically connected to the inner wall of the screening box, a plurality of second protruding blocks are symmetrically and fixedly connected to the front and rear sides of the second filter plate, a second reciprocating screw rod is rotatably installed in the front second sliding rail, the right end of the second reciprocating screw rod is rotatably arranged in the second sliding rail and the outside of the screening box, and is driven by the transmission assembly two on the right side of the double-shaft motor through a bevel gear set, a second guide rod is rotatably installed in the rear second sliding rail, a second sliding block is threadedly connected to the second reciprocating screw rod, and a second sliding block is also slidably installed on the second guide rod, a second cleaning block is rotatably connected between the two second sliding blocks, and a second protruding rod is fixedly connected to the lower end surface of each of the two second sliding blocks. The second sliding block drives the second protruding rod to contact the second protruding block during movement, and then the second filter plate is pushed down.

[0009] Optionally, it further comprises a material distribution fan, a worm gear and a worm, the material distribution fan is rotatably installed on the lower part of the discharging frame, the worm gear is fixedly connected to the front side of the rotating shaft of the material distribution fan, the worm is rotatably arranged in the upper part of the screening box, the worm gear is meshed with the worm, the upper end of the worm is arranged in the upper part of the screening box, and the middle part of the transmission assembly one is driven by the bevel gear set.

[0010] Optionally, the first filter plate and the second filter plate are provided with a plurality of filter holes, and the filter holes on the second filter plate are smaller.

[0011] Optionally, the blanking frame and the screening box are provided with switch doors, which prevent dust from entering the interior of the equipment when not in use.

[0012] Beneficial effects: 1. The utility model discloses a first filtering mechanism and a second filtering mechanism are used for grading and screening traditional Chinese medicine decoction pieces, different traditional Chinese medicines are screened out, and the screening efficiency of traditional Chinese medicine decoction pieces is improved.

[0013] 2. The utility model discloses a sliding block drives a cleaning block to move back and forth on the filter plate to clean traditional Chinese medicines stuck on the filter plate, which avoids the filter mechanism from being stuck. ACCURATE DRAWINGS

[0014] Figure 1 It is a three-dimensional structure schematic view of the utility model.

[0015] Figure 2 It is a three-dimensional structure schematic view of the blanking frame, worm wheel and worm of the utility model.

[0016] Figure 3 It is Figure 2 It is an enlarged view of the middle A.

[0017] Figure 4 It is a plane structure schematic view of the material distributing fan, first discharging block and second discharging block of the utility model.

[0018] Figure 5 It is a three-dimensional structure schematic view of the first filtering mechanism of the utility model.

[0019] Figure 6 It is a three-dimensional structure schematic view of the first reciprocating screw rod and the first guide rod of the utility model.

[0020] Figure 7 It is a three-dimensional structure schematic view of the second filtering mechanism of the utility model.

[0021] Figure 8 It is a three-dimensional structure schematic view of the second reciprocating screw rod and the second guide rod of the utility model.

[0022] The meanings of the reference numerals in the figure are as follows: 1: Support frame; 20: Screening box; 21: Dual-axis motor; 211: Transmission component one; 212: Transmission component two; 22: First discharge block; 23: Second discharge block; 24: Third discharge block; 25: Inclined block; 30: Feeding frame; 31: Distributor fan; 32: Worm gear; 33: Worm; 4: Primary filtration mechanism; 40: First slide rail; 41: First connecting rod; 42: First spring; 43: First filter plate; 4 4: First protrusion; 401: First reciprocating screw; 402: First guide rod; 403: First slider; 404: First cleaning block; 405: First protrusion; 5: Secondary filtration mechanism; 50: Second slide rail; 51: Second connecting rod; 52: Second spring; 53: Second filter plate; 54: Second protrusion; 501: Second reciprocating screw; 502: Second guide rod; 503: Second slider; 504: Second cleaning block; 505: Second protrusion. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe this utility model in further detail with reference to the accompanying drawings. It is hereby declared that the terms "up," "down," "left," "right," "front," "back," "inner," and "outer," etc., appearing or about to appear in this document, are based solely on the accompanying drawings and are not intended to specifically limit this utility model.

[0024] Example: A screening device for grading traditional Chinese medicine decoction pieces, such as... Figures 1-4 As shown, the system includes a support frame 1, a screening box 20, a dual-axis motor 21, a first transmission component 211, a second transmission component 212, a first discharge block 22, a second discharge block 23, a third discharge block 24, an inclined block 25, a feeding frame 30, a primary filtration mechanism 4, and a secondary filtration mechanism 5. The screening box 20 is fixedly mounted on the support frame 1 with screws. The feeding frame 30 is fixedly mounted on the top left side of the screening box 20. The dual-axis motor 21 is fixedly mounted on the top middle side of the screening box 20 with screws. The first transmission component 211 is fixedly mounted on the left output shaft of the dual-axis motor 21, and the second transmission component 212 is fixedly mounted on the right output shaft of the dual-axis motor 21. The first discharge block 22 is fixedly inserted through the upper right side of the screening box 20. A second discharge block 23 is fixedly inserted through the lower left side of the screening box 20. A third discharge block 24 is fixedly inserted through the bottom of the screening box 20. An inclined block 25 is fixedly connected to both the left and right sides of the third discharge block 24. A primary filter mechanism 4 is fixedly installed in the upper part of the screening box 20. The primary filter mechanism 4 is inclined with the left side higher than the right side. The lower side of the primary filter mechanism 4 is aligned with the first discharge block 22. A secondary filter mechanism 5 is fixedly installed in the screening box 20 below the primary filter mechanism 4. The secondary filter mechanism 5 is inclined with the left side lower than the right side. The lower side of the secondary filter mechanism 5 is aligned with the second discharge block 23. Both the discharge frame 30 and the screening box 20 are equipped with opening and closing doors to prevent dust from entering the equipment when not in use.

[0025] As Figures 5-6 shown, the primary filtering mechanism 4 comprises a first sliding rail 40, a first connecting rod 41, a first spring 42, a first filter plate 43, a first protruding block 44, a first reciprocating screw rod 401, a first guide rod 402, a first sliding block 403, a first cleaning block 404 and a first protruding rod 405. A first sliding rail 40 is symmetrically and fixedly installed on the upper front and back sides of the screening box 20. The higher side of the two first sliding rails 40 is fixedly connected through a first connecting rod 41. The lower end surface of the first connecting rod 41 is fixedly connected with a plurality of first springs 42. The lower side of the first spring 42 is fixedly connected with a first filter plate 43. The lower end of the first filter plate 43 is elastically connected to the inner wall of the screening box 20. The front and back sides of the first filter plate 43 are symmetrically fixedly connected with a plurality of first protruding blocks 44. The front first sliding rail 40 is rotatably installed with a first reciprocating screw rod 401. The left end of the first reciprocating screw rod 401 is rotatably provided in the first sliding rail 40 and the outer part of the screening box 20 and is driven by the transmission assembly one 211 on the left side of the double-shaft motor 21 through a bevel gear set. The back first sliding rail 40 is rotatably installed with a first guide rod 402. The first reciprocating screw rod 401 is screw-connected with a first sliding block 403. The first guide rod 402 is also slidably installed with a first sliding block 403. The two first sliding blocks 403 are rotatably connected with a first cleaning block 404. The lower end surfaces of the two first sliding blocks 403 are fixedly connected with a first protruding rod 405. The first sliding block 403 drives the first protruding rod 405 to contact the first protruding block 44 during movement, thereby lowering the first filter plate 43.

[0026] As Figures 7-8As shown, the secondary filtering mechanism 5 comprises a second sliding rail 50, a second connecting rod 51, a second spring 52, a second filtering plate 53, a second protruding block 54, a second reciprocating wire rod 501, a second guide rod 502, a second sliding block 503, a second cleaning block 504 and a second protruding rod 505. A second sliding rail 50 is symmetrically and fixedly installed on the upper front and rear sides of the screening box 20. The higher side of the two second sliding rails 50 is fixedly connected through a second connecting rod 51. A plurality of second springs 52 are fixedly connected to the lower end surface of the second connecting rod 51. A second filtering plate 53 is fixedly connected to the lower side of the second spring 52. The lower end of the second filtering plate 53 is elastically connected to the inner wall of the screening box 20. A plurality of second protruding blocks 54 are symmetrically and fixedly connected to the front and rear sides of the second filtering plate 53. A second reciprocating wire rod 501 is rotatably installed in the front second sliding rail 50. The right end of the second reciprocating wire rod 501 is rotatably provided in the second sliding rail 50 and the outer part of the screening box 20 and is driven by the transmission assembly two 212 on the right side of the double-shaft motor 21 through a bevel gear set. A second guide rod 502 is rotatably installed in the rear second sliding rail 50. A second sliding block 503 is threadedly connected to the second reciprocating wire rod 501. The second sliding block 503 is also slidably installed on the second guide rod 502. A second cleaning block 504 is rotatably connected between the two second sliding blocks 503. Second protruding rods 505 are fixedly connected to the lower end surfaces of the two second sliding blocks 503. When the second sliding block 503 moves and the second protruding rod 505 contacts the second protruding block 54, the second filtering plate 53 will be pushed down. A plurality of filtering holes are arranged on the first filtering plate 43 and the second filtering plate 53, and the filtering holes on the second filtering plate 53 are smaller.

[0027] As shown in Figure 2 and Figure 4 , it further comprises a material distributing fan 31, a worm wheel 32 and a worm 33. The material distributing fan 31 is rotatably installed at the lower part of the blanking frame 30. The worm wheel 32 is fixedly connected to the front side of the rotating shaft of the material distributing fan 31. The worm 33 is rotatably arranged in the upper part of the screening box 20. The worm wheel 32 is engaged with the worm 33. The upper end of the worm 33 is provided in the upper part of the screening box 20. The middle part of the transmission assembly one 211 is driven by the upper end of the worm 33 through a bevel gear set.

[0028] When the traditional Chinese medicine decoction pieces need to be classified and screened, the door on the feeding frame 30 is first opened, the double-shaft motor 21 is started, and then the traditional Chinese medicine decoction pieces that need to be classified and screened are poured into the screening box 20 from the feeding frame 30. The transmission assembly one 211 on the left side of the output shaft of the double-shaft motor 21 drives the worm 33 to rotate through the bevel gear assembly, and the worm 33 drives the worm wheel 32 and the distribution fan 31 to rotate, so that the distribution fan 31 uniformly distributes the traditional Chinese medicine poured into the screening box 20. When the traditional Chinese medicine decoction pieces fall on the first filter plate 43 of the first-level filtering mechanism 4, the traditional Chinese medicine with a larger volume will be left on the first-level filtering mechanism 4 and fall along the inclined direction of the first filter plate 43, and then slide out of the first discharge block 22. In this process, the transmission assembly one 211 on the left side of the output shaft of the double-shaft motor 21 drives the first reciprocating lead screw 401 to rotate in the first sliding rail 40 through the bevel gear assembly. In the rotating process of the first reciprocating lead screw 401, the first sliding block 403 moves back and forth on the first reciprocating lead screw 401, and the first sliding block 403 will drive the rear first sliding block 403 to move on the first guide rod 402 through the first cleaning block 404. In the moving process of the first sliding blocks 403 on both sides, the first convex rod 405 on the lower end surface of the first sliding block 403 will lower the first filter plate 43 when contacting the first convex block 44 on the front and rear sides of the first filter plate 43. At this time, the first springs 42 on the lower end surface of the first connecting rod 41 are stretched. When the first convex rod 405 moves away from the first convex block 44, the first springs 42 are reset. When the first convex rod 405 continuously contacts the first convex block 44, the first filter plate 43 is shaken under the action of the first springs 42, thereby shaking the traditional Chinese medicine stuck in the filter holes of the first filter plate 43. At the same time, the first cleaning block 404 moves back and forth on the first filter plate 43 under the action of the two first sliding blocks 403, and the traditional Chinese medicine stuck in the filter holes of the first filter plate 43 is swept out of the first discharge block 22. Among them, the traditional Chinese medicine with a medium volume is filtered from the first-level filtering mechanism 4 and falls on the second-level filtering mechanism 5. When the traditional Chinese medicine decoction pieces fall on the second filter plate 53 of the second-level filtering mechanism 5, the traditional Chinese medicine with a medium volume will be left on the second-level filtering mechanism 5 and fall along the inclined direction of the second filter plate 53, and then slide out of the second discharge block 23. In this process, the transmission assembly two 212 on the right side of the output shaft of the double-shaft motor 21 drives the second reciprocating lead screw 501 to rotate in the second sliding rail 50 through the bevel gear assembly. In the rotating process of the second reciprocating lead screw 501, the second sliding block 503 moves back and forth on the second reciprocating lead screw 501, and the second sliding block 503 will drive the rear second sliding block 503 to move on the second guide rod 502 through the second cleaning block 504. In the moving process of the second sliding blocks 503 on both sides, the second convex rod 505 on the lower end surface of the second sliding block 503 will lower the second filter plate 53 when contacting the second convex block 54 on the front and rear sides of the second filter plate 53. At this time, the second springs 52 on the lower end surface of the second connecting rod 51 are stretched. When the second convex rod 505 moves away from the second convex block 54,When the second convex rod 505 continuously contacts the second convex block 54, the second filter plate 53 is shaken under the action of the second springs 52, thereby shaking the traditional Chinese medicine stuck in the filter holes of the second filter plate 53, and the second cleaning block 504 moves back and forth on the second filter plate 53 under the action of the two second sliding blocks 503, thereby sweeping the traditional Chinese medicine stuck in the filter holes of the second filter plate 53 out of the second discharging block 23, wherein the traditional Chinese medicine with the smallest volume is filtered out of the second filtering mechanism 5, falls on the inclined block 25, slides down and falls out of the third discharging block 24, and the corresponding traditional Chinese medicine pieces are collected under the first discharging block 22, the second discharging block 23 and the third discharging block 24.

[0029] Although the present application has been described in detail with reference to the above embodiments, it is apparent to those skilled in the art that various changes or modifications can be made to the present application without departing from the principles and spirit of the application as defined in the appended claims. Therefore, the detailed description of the present application is only used to explain, but not to limit the present application, and the scope of protection is defined by the content of the claims.

Claims

1. A screening device for grading traditional Chinese medicine decoction pieces, characterized in that: Including support frame (1), screening box (20), double-shaft motor (21), transmission assembly one (211), transmission assembly two (212), first discharge block (22), second discharge block (23), third discharge block (24), inclined block (25), blanking frame (30), primary filtering mechanism (4) and secondary filtering mechanism (5), support frame (1) is fixedly installed with screening box (20), screening box (20) top left side is fixedly provided with blanking frame (30), screening box (20) top middle side is fixedly installed with double-shaft motor (21), double-shaft motor (21) left side output shaft is fixedly provided with transmission assembly one (211), double-shaft motor (21) right side output shaft is fixedly provided with transmission assembly two (212), screening box (20) right side face upper portion is fixedly provided with first discharge block (22), screening box (20) left side face lower portion is fixedly provided with second discharge block (23), screening box (20) inner bottom is fixedly provided with third discharge block (24), and the left and right sides of third discharge block (24) are both fixedly connected with an inclined block (25), screening box (20) inner upper portion is fixedly installed with primary filtering mechanism (4), primary filtering mechanism (4) is inclined, and the lower side of primary filtering mechanism (4) is aligned with first discharge block (22), screening box (20) inner lower portion of primary filtering mechanism (4) is fixedly provided with secondary filtering mechanism (5), and secondary filtering mechanism (5) is inclined, and the lower side of secondary filtering mechanism (5) is aligned with second discharge block (23).

2. The screening device for classifying traditional Chinese medicine decoction pieces according to claim 1, characterized in that: The primary filtering mechanism (4) comprises a first sliding rail (40), a first connecting rod (41), a first spring (42), a first filtering plate (43), a first protruding block (44), a first reciprocating screw rod (401), a first guide rod (402), a first sliding block (403), a first cleaning block (404) and a first protruding rod (405). A first sliding rail (40) is symmetrically and fixedly installed on the upper front and back sides of the screening box (20). The higher side of the two first sliding rails (40) is fixedly connected through a first connecting rod (41). The lower end surface of the first connecting rod (41) is fixedly connected with a plurality of first springs (42). The lower side of the first spring (42) is fixedly connected with a first filtering plate (43). The lower end of the first filtering plate (43) is elastically connected to the inner wall of the screening box (20). The front and back sides of the first filtering plate (43) are symmetrically fixedly connected with a plurality of first protruding blocks (44). The front first sliding rail (40) is rotatably installed with a first reciprocating screw rod (401). The left end of the first reciprocating screw rod (401) is rotatably arranged in the first sliding rail (40) and the outside of the screening box (20) and is driven by the transmission assembly one (211) on the left side of the double-shaft motor (21) through a bevel gear set. The rear first sliding rail (40) is rotatably installed with a first guide rod (402). The first reciprocating screw rod (401) is screw-connected with a first sliding block (403). The first guide rod (402) is also slidingly installed with a first sliding block (403). The two first sliding blocks (403) are rotatably connected with a first cleaning block (404). The lower end surfaces of the two first sliding blocks (403) are fixedly connected with a first protruding rod (405). When the first sliding block (403) moves and the first protruding rod (405) contacts the first protruding block (44), the first filtering plate (43) will be pushed down.

3. The screening device for classifying traditional Chinese medicine decoction pieces according to claim 2, characterized in that: The secondary filtering mechanism (5) comprises a second sliding rail (50), a second connecting rod (51), a second spring (52), a second filtering plate (53), a second protruding block (54), a second reciprocating screw rod (501), a second guide rod (502), a second sliding block (503), a second cleaning block (504) and a second protruding rod (505), a second sliding rail (50) is symmetrically and fixedly installed on the upper front and back sides of the screening box (20), the higher side of the two second sliding rails (50) is fixedly connected through a second connecting rod (51), a plurality of second springs (52) are fixedly connected to the lower end surface of the second connecting rod (51), a second filtering plate (53) is fixedly connected to the lower side of the second spring (52), the lower end of the second filtering plate (53) is elastically connected to the inner wall of the screening box (20), a plurality of second protruding blocks (54) are symmetrically and fixedly connected to the front and back sides of the second filtering plate (53), a second reciprocating screw rod (501) is rotatably installed in the front second sliding rail (50), the right end of the second reciprocating screw rod (501) is rotatably arranged outside the second sliding rail (50) and the screening box (20) and is driven by the transmission assembly two (212) on the right side of the double-shaft motor (21) through a bevel gear set, a second guide rod (502) is rotatably installed in the rear second sliding rail (50), a second sliding block (503) is threadedly connected to the second reciprocating screw rod (501), the second guide rod (502) also slidably installs the second sliding block (503), a second cleaning block (504) is rotatably connected between the two second sliding blocks (503), a second protruding rod (505) is fixedly connected to the lower end surface of each of the two second sliding blocks (503), and the second sliding block (503) drives the second protruding rod (505) to contact the second protruding block (54) during movement, so that the second filtering plate (53) is pushed down.

4. The screening device for classifying traditional Chinese medicine decoction pieces according to claim 3, characterized in that: The device further comprises a distribution fan (31), a worm wheel (32) and a worm (33), the distribution fan (31) is rotatably installed at the lower part of the blanking frame (30), the worm wheel (32) is fixedly connected to the front side of the rotating shaft of the distribution fan (31), the worm (33) is rotatably arranged in the upper part of the screening box (20), the worm wheel (32) is engaged with the worm (33), the upper end of the worm (33) is arranged in the upper part of the screening box (20), and the middle part of the transmission assembly one (211) is driven by the worm wheel (32) through a bevel gear set.

5. The screening device for classifying traditional Chinese medicine decoction pieces according to claim 4, characterized in that: A plurality of filtering holes are arranged on the first filtering plate (43) and the second filtering plate (53), and the filtering holes on the second filtering plate (53) are smaller.

6. The screening device for classifying traditional Chinese medicine decoction pieces according to claim 5, characterized in that: The blanking frame (30) and the screening box (20) are provided with switch doors.

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