Medicinal material pre-crushing powder screening device

Abstract

The utility model provides a medicinal material pre-crushing powder screening device which comprises a crushing box, a medicinal material pre-crushing mechanism, a conveying mechanism and a screening mechanism, the interior of the crushing box is divided into a crushing chamber and a screening chamber, and the top of the crushing box is provided with a feeding port corresponding to the crushing chamber; the medicinal material pre-crushing mechanism comprises two crushing roller teeth and a driving motor, the two crushing roller teeth are rotationally connected into the crushing chamber and correspond to the lower portion of the feeding port, and the driving motor is in transmission connection with the two crushing roller teeth; the conveying mechanism comprises a conveying belt assembly and a conveying motor, the conveying belt assembly is installed in the crushing chamber, and the conveying motor is in transmission connection with the conveying belt assembly. The screening mechanism comprises a screening plate and a vibrator, the screening plate is obliquely connected to the inner wall of the screening chamber, and the output end of the conveying belt assembly corresponds to the upper portion of the screening plate.

Description

Technical Field

[0001] The utility model relates to a medicinal material pre-crushing powder screening device, belonging to the technical field of medicinal material crushing. Background Art

[0002] In the production and processing of medicinal materials, the raw materials need to be crushed to facilitate subsequent processing steps. However, the existing medicinal material crushing devices have poor crushing effect on medicinal materials, slow crushing speed, uneven crushing particle size, and easy blockage, which affects subsequent processing operations.

[0003] The existing patent CN214811444U discloses a household Chinese herbal medicine crusher, which places the material to be crushed into the crushing chamber at the upper shell. After the material is placed, the cover body and the upper shell are engaged through two buckles, and the stepper motor drives the driven inner shaft and the driven outer shaft sleeve to move coaxially and differentially in opposite directions. During the movement of the driven inner shaft, the transmission shaft can also drive the driven seat to perform circular motion. After the driven seat performs circular motion, it then drives the stirring rod to perform orbital motion to perform crushing operations.

[0004] However, the above scheme does not have the function of screening out powder and dust. In the process of reprocessing medicinal materials, a crusher is needed to crush the medicinal materials and send the crushed medicinal materials to the next step. After the current crusher crushes the Chinese medicinal materials, impurities and debris will exist. If they cannot be screened out from the Chinese medicinal materials, it will affect the subsequent production of Chinese medicine products. The mixed powder and debris will cause the quality of the Chinese medicine products to decline. Therefore, there is an urgent need for a device that can crush and screen medicinal materials. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a medicinal material pre-crushing powder screening device, which can pre-crush the medicinal material and screen out the powder residue.

[0006] The utility model solves the above technical problems with the following technical solutions: a medicinal material pre-crushing powder screening device, comprising:

[0007] A crushing box, the interior of which is divided into a crushing chamber and a screening chamber by a partition, a connecting hole is provided on the partition, and a feed port is provided on the top of the crushing box corresponding to the crushing chamber;

[0008] A medicinal material pre-crushing mechanism, the medicinal material pre-crushing mechanism comprises two crushing roller teeth and a driving motor, the two crushing roller teeth are rotatably connected in the crushing chamber, a medicinal material crushing area is formed between the two crushing roller teeth, the medicinal material crushing area corresponds to the lower part of the feed port, the driving motor is fixed on the crushing box and is drivingly connected to the two crushing roller teeth through a first gear assembly;

[0009] A conveying mechanism, the conveying mechanism comprising a conveyor belt assembly and a conveying motor, the conveyor belt assembly is installed in the crushing chamber and corresponds to the lower part of the medicinal material crushing area, the conveying motor is fixed on the crushing box and is connected to the conveyor belt assembly through a transmission assembly;

[0010] The screening mechanism comprises a screen plate and a vibrator, wherein the screen plate is obliquely connected to the inner wall of the screening chamber through an elastic member, the output end of the conveyor belt assembly passes through the connecting hole corresponding to the top of the screen plate, the vibrator is installed on the crushing box and the vibrating end abuts against the bottom of the screen plate, and the screening chamber is provided with a medicinal material outlet on the oblique lower end side corresponding to the screen plate.

[0011] The beneficial effects of the utility model are as follows: the medicinal materials are input from the feed port, the medicinal materials enter the crushing chamber, the two crushing roller teeth cut the medicinal materials, the cut block medicinal materials fall onto the conveyor belt assembly, the conveyor belt assembly passes through the connecting hole into the screening chamber, the medicinal materials are transported to the screen plate, the vibrator drives the screen plate to vibrate, the powder residue in the block medicinal materials is screened, the inclined lower end side of the screen plate corresponds to the medicinal material outlet, and the regular medicinal materials are output from the medicinal material outlet.

[0012] On the basis of the above technical solution, the present invention can also be improved as follows.

[0013] Furthermore, it also includes a medicinal material fine crushing mechanism, which includes a herringbone guide plate, two crushing components and a crushing motor, the herringbone guide plate is fixed to the inner wall of the crushing chamber and the top tip corresponds to the bottom of the medicinal material crushing area, the two crushing components are symmetrically installed on the inner wall of the crushing chamber and their crushing feed ends correspond to the lower end of the herringbone guide plate, and the crushing motor is fixed on the crushing box and is transmission-connected to the crushing component through a second gear assembly.

[0014] The beneficial effect of adopting the above further scheme is that the block medicinal materials cut through the medicinal material crushing area are diverted by the herringbone guide plate, and the block medicinal materials are guided to the crushing components on both sides for more precise crushing, and the medicinal materials are finely processed to obtain block medicinal materials that meet the standard size.

[0015] Furthermore, the crushing assembly includes a crushing roller cutter, a knife plate and a position adjustment assembly. Mounting holes are provided on the symmetrical side plates of the crushing chamber. Both ends of the crushing roller cutter pass through and are rotatably connected to the mounting holes. The position adjustment assembly is installed on the crushing box and its adjustment end penetrates into the crushing chamber. The side of the knife plate opposite to the crushing roller cutter is an arc-shaped surface. The knife plate is installed on the adjustment end of the position adjustment assembly to adjust the distance between the arc-shaped surface and the crushing roller cutter. The lower end of the herringbone guide plate corresponds to the arc-shaped surface of the knife plate. The crushing motor is fixed on the crushing box and is transmission-connected to the crushing roller cutter through the second gear assembly.

[0016] The beneficial effects of adopting the above further scheme are as follows: the block medicinal materials are guided to the crushing feed end through the herringbone guide plate, and the block medicinal materials slide down along the curved surface of the knife plate. The position adjustment assembly can adjust the distance between the curved surface of the knife plate and the crushing roller knife bracket, that is, it can control the size of the further cutting of the block medicinal materials.

[0017] Furthermore, the position adjustment assembly includes two guide rods, an adjusting screw and an adjusting nut. Two guide holes and a through hole are provided on the side plate of the crushing box. The two guide rods are slidingly connected with the two guide holes respectively. The knife plate is fixed at one end of the two guide rods. The adjusting nut is fixed on the through hole. The adjusting screw is threadedly connected with the adjusting nut. One end of the adjusting screw is rotatably connected with the knife plate.

[0018] The beneficial effects of adopting the above further solution are as follows: by rotating the adjusting screw, the distance between the arc surface of the knife plate and the crushing roller knife can be controlled; the guide rod can orient the knife plate to prevent deviation.

[0019] Furthermore, the knife plate is provided with a blind hole corresponding to the adjusting screw, the side wall of the blind hole is provided with an annular groove, the end of the adjusting screw is sleeved with an annular plate, and the annular plate is slidably connected in the annular groove.

[0020] The beneficial effect of adopting the above further solution is that the annular plate is rotatably connected in the annular groove, so that the adjusting screw and the knife plate are rotatably connected, and the annular plate can limit the adjusting screw from being separated from the knife plate.

[0021] Furthermore, the second gear assembly includes two driven gears and a driving gear, the two driven gears are correspondingly installed on the same side ends of the two crushing roller cutters and are transmission connected therebetween, the driving gear is fixed on the output shaft of the crushing motor, and the driving gear is transmission connected to one of the driven gears.

[0022] Furthermore, two connecting holes are provided on the symmetrical two side plates of the crushing box, and the two ends of the two crushing roller teeth pass through and are rotatably connected to the two connecting holes. The first gear assembly includes two transmission gears and a driving gear. The two transmission gears are correspondingly installed on the same side ends of the two crushing roller teeth and are transmission connected therebetween. The driving gear is fixed on the output shaft of the driving motor, and the driving gear is transmission connected to one of the transmission gears.

[0023] Furthermore, the screening mechanism also includes two mounting grooves symmetrically fixed on the inner wall of the screening chamber, the two mounting grooves are arranged downwardly and inclined along the axial direction of the crushing roller teeth, and the grooves are opposite to each other, and the two side edges of the screen plate are respectively abutted against the groove walls on one side of the two mounting grooves, and the elastic member includes a plurality of compression springs, one end of each of the compression springs is fixedly connected to the top surface of the screen plate, and the other end is fixedly connected to the groove wall on the other side of the mounting groove.

[0024] The beneficial effects of adopting the above-mentioned further scheme are as follows: the two side ends of the sieve plate are located in the mounting groove bodies on both sides, and are connected to the mounting groove bodies through multiple compression springs. The compression springs press the sieve plate against the groove wall of the mounting groove body. When the vibrating end of the vibrator drives the sieve plate to vibrate, the compression springs always have a tendency to press the sieve plate against the groove wall, thereby improving the vibration effect.

[0025] Furthermore, the vibrator includes a screening motor, a connecting shaft and a plurality of cams. The side wall of the screening chamber is symmetrically provided with two through holes, the connecting shaft passes through and is rotatably connected to the through holes, the screening motor is fixed on the crushing box and is transmission-connected to the connecting shaft through a coupling, and a plurality of cams are fixed on the connecting shaft to lift the screen plate up and down.

[0026] The beneficial effects of adopting the above further scheme are as follows: the screening motor drives the connecting shaft to rotate, and multiple cams rotate. When the protruding end contacts the bottom of the sieve plate, the sieve plate is lifted up, and the rotation continues. The protruding end moves away from the sieve plate, and the sieve plate moves downward under the action of the compression spring and abuts against the groove wall of the installation groove body. The reciprocating cycle forms a vibration drive for the sieve plate, thereby screening and grinding the medicinal materials on the sieve plate.

[0027] Furthermore, a plurality of filter holes are provided on the conveyor belt of the conveyor belt assembly.

[0028] The beneficial effect of adopting the above further solution is that the filter holes on the conveyor belt can perform preliminary screening on the medicinal material powder produced after being cut by the crushing roller knife. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of the structure of a medicinal material pre-crushing powder screening device provided by the utility model;

[0030] Figure 2 for Figure 1 A longitudinal section of

[0031] Figure 3 for Figure 1 An enlarged view of the middle A portion;

[0032] Figure 4 for Figure 1 An enlarged view of the middle B portion;

[0033] Figure 5 A schematic diagram of the internal structure of a medicinal material pre-crushing powder screening device provided by the utility model;

[0034] Figure 6 for Figure 5 An enlarged view of the middle C portion;

[0035] Figure 7 The utility model provides a schematic diagram of the installation of the first gear assembly of the medicinal material pre-crushing powder screening device.

[0036] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0037] 1. Crushing box; 11. Crushing chamber; 12. Screening chamber; 13. Feeding port; 14. Medicinal material outlet; 15. Powder outlet; 16. Cleaning port; 2. Connecting hole; 3. Medicinal material pre-crushing mechanism; 31. Crushing roller teeth; 4. First gear assembly; 41. Transmission gear; 42. Driving gear; 5. Conveying mechanism; 51. Conveyor belt assembly; 511. Conveyor belt; 5111. Filter hole; 512. First roller shaft; 513. Second roller shaft; 6. Screening mechanism; 61. Screen plate; 62. Vibrator; 621 , screening motor; 622, connecting shaft; 623, cam; 63, elastic part; 631, compression spring; 64, mounting trough; 7, medicinal material fine crushing mechanism; 71, herringbone guide plate; 72, crushing assembly; 721, crushing roller; 722, knife plate; 7221, blind hole; 7222, annular groove; 7223, annular plate; 723, position adjustment assembly; 7231, guide rod; 7232, adjusting screw; 7233, adjusting nut; 7234, turntable; 8, sieve hole; 9, partition. DETAILED DESCRIPTION

[0038] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0039] The utility model aims to provide a medicinal material pre-crushing powder screening device to solve the problems existing in the prior art, and can pre-crush the medicinal material and screen out the powder residue.

[0040] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0041] The utility model provides a medicinal material pre-crushing powder screening device, such as Figures 1 to 7 As shown, including:

[0042] A crushing box 1, the interior of the crushing box 1 is divided into a crushing chamber 11 and a screening chamber 12 by a partition 9, a connecting hole 2 is opened on the partition 9, and a feed port 13 is opened on the top of the crushing box 1 corresponding to the crushing chamber 11;

[0043] The medicinal material pre-crushing mechanism 3 includes two crushing roller teeth 31 and a driving motor. The two crushing roller teeth 31 are rotatably connected in the crushing chamber 11. A medicinal material crushing area is formed between the two crushing roller teeth 31. The medicinal material crushing area corresponds to the lower part of the feed port 13. The driving motor is fixed on the crushing box 1 and is connected to the two crushing roller teeth 31 through the first gear assembly 4.

[0044] The conveying mechanism 5 includes a conveyor belt assembly 51 and a conveying motor. The conveyor belt assembly 51 is installed in the crushing chamber 11 and corresponds to the lower part of the medicinal material crushing area. The conveying motor is fixed on the crushing box 1 and is connected to the conveyor belt assembly 51 through a transmission assembly.

[0045] The screening mechanism 6 includes a sieve plate 61 and a vibrator 62. The sieve plate 61 is obliquely connected to the inner wall of the screening chamber 12 through an elastic member 63. The output end of the conveyor belt assembly 51 passes through the connecting hole 2 corresponding to the top of the sieve plate 61. The vibrator 62 is installed on the crushing box 1 and the vibrating end abuts against the bottom of the sieve plate 61. The screening chamber 12 is provided with a medicinal material outlet 14 at the oblique lower end side of the sieve plate 61.

[0046] The medicinal material crushing and powder screening device provided by the utility model inputs the medicinal material from the feed port 13, the medicinal material enters the crushing chamber 11, the two crushing roller teeth 31 cut the medicinal material, and the cut block medicinal material falls onto the conveyor belt assembly 51, the conveyor belt assembly 51 passes through the connecting hole 2 and enters the screening chamber 12, and the medicinal material is transported to the screen plate 61, the vibrator 62 drives the screen plate 61 to vibrate, the powder residue in the block medicinal material is screened, the inclined lower end side of the screen plate 61 corresponds to the medicinal material outlet 14, and the regular medicinal material is output from the medicinal material outlet 14.

[0047] Preferably, the diameter of the sieve holes 8 on the sieve plate 61 is 1 to 3 mm.

[0048] In a specific embodiment of the present invention, a powder outlet 15 is provided on the side wall of the crushing box 1 below the sieve plate 61 .

[0049] In a specific embodiment of the utility model, a cleaning port 16 is opened on the side wall of the crushing box 1 below the conveyor belt assembly 51.

[0050] In a specific embodiment of the utility model, the conveyor belt assembly 51 includes a conveyor belt 511, a first roller 512 and a second roller 513. The first roller 512 is rotatably connected to the inner wall of the crushing chamber 11, and the second roller 513 is rotatably connected to the inner wall of the screening chamber 12. The conveyor belt 511 is transmission-connected to the first roller 512 and the second roller 513, and the output shaft of the conveying motor is transmission-connected to the first roller 512 through the transmission assembly.

[0051] In a specific embodiment of the utility model, the transmission assembly includes gear 1 and gear 2, gear 1 is fixed on the first roller shaft 512, gear 2 is fixed on the output shaft of the conveying motor, and gear 1 and gear 2 are in transmission connection.

[0052] In a specific embodiment of the utility model, it also includes a medicinal material fine crushing mechanism 7, which includes a herringbone guide plate 71, two crushing components 72 and a crushing motor. The herringbone guide plate 71 is fixed to the inner wall of the crushing chamber 11 and the top tip corresponds to the bottom of the medicinal material crushing area. The two crushing components 72 are symmetrically installed on the inner wall of the crushing chamber 11 and their crushing feed ends correspond to the lower end of the herringbone guide plate 71. The crushing motor is fixed on the crushing box 1 and is transmission-connected to the crushing component 72 through a second gear assembly.

[0053] The block medicinal materials cut in the medicinal material crushing area are diverted by the herringbone guide plate 71, and the block medicinal materials are guided to the crushing components 72 on both sides for higher precision crushing, and the medicinal materials are finely processed to obtain block medicinal materials that meet the standard size.

[0054] In a specific embodiment of the utility model, the crushing assembly 72 includes a crushing roller cutter 721, a knife plate 722 and a position adjustment assembly 723. Mounting holes are provided on the symmetrical side plates of the crushing chamber 11. Both ends of the crushing roller cutter 721 pass through and are rotatably connected to the mounting holes. The position adjustment assembly 723 is installed on the crushing box 1 and its adjustment end penetrates into the crushing chamber 11. The side of the knife plate 722 opposite to the crushing roller cutter 721 is an arc surface. The knife plate 722 is installed on the adjustment end of the position adjustment assembly 723 to adjust the distance between the arc surface and the crushing roller cutter 721. The lower end of the herringbone guide plate 71 corresponds to the arc surface of the knife plate 722. The crushing motor is fixed on the crushing box 1 and is transmission-connected to the crushing roller cutter 721 through the second gear assembly.

[0055] The block medicinal materials are guided to the crushing feed end through the herringbone guide plate 71, and the block medicinal materials slide down along the arc surface of the knife plate 722. The position adjustment assembly can adjust the distance between the arc surface of the knife plate 722 and the crushing roller knife 721 bracket, that is, it can control the size of the further cutting of the block medicinal materials.

[0056] In a specific embodiment of the utility model, the position adjustment component 723 includes two guide rods 7231, an adjusting screw 7232 and an adjusting nut 7233. Two guide holes and a through hole are provided on the side plate of the crushing box 1. The two guide rods 7231 are slidably connected with the two guide holes correspondingly. The knife plate 722 is fixed at one end of the two guide rods 7231, the adjusting nut 7233 is fixed on the through hole, the adjusting screw 7232 is threadedly connected with the adjusting nut 7233, and one end of the adjusting screw 7232 is rotatably connected with the knife plate 722.

[0057] By rotating the adjusting screw 7232, the distance between the arc surface of the knife plate 722 and the crushing roller knife 721 can be controlled; the guide rod 7231 can orient the knife plate 722 to prevent deviation.

[0058] In a specific embodiment of the present invention, a turntable 7234 is fixed on the adjusting screw 7232, so that the adjusting screw 7232 can be rotated more easily.

[0059] In a specific embodiment of the utility model, the knife plate 722 is provided with a blind hole 7221 corresponding to the adjusting screw 7232, the side wall of the blind hole 7221 is provided with an annular groove 7222, the end of the adjusting screw 7232 is sleeved with an annular plate 7223, and the annular plate 7223 is slidably connected in the annular groove 7222.

[0060] The annular plate 7223 is rotatably connected in the annular groove 7222 to realize the rotatable connection between the adjusting screw 7232 and the knife plate 722 , and the annular plate 7223 can limit the adjusting screw 7232 from being separated from the knife plate 722 .

[0061] In a specific embodiment of the utility model, the second gear assembly includes two driven gears and a driving gear. The two driven gears are correspondingly installed on the same side ends of the two crushing roller cutters 721 and are transmission connected therebetween. The driving gear is fixed on the output shaft of the crushing motor, and the driving gear is transmission connected to a driven gear.

[0062] In a specific embodiment of the utility model, two connecting holes are provided on the symmetrical two side plates of the crushing box 1, and the two ends of the two crushing roller teeth 31 pass through and are rotatably connected to the two connecting holes. The first gear assembly 4 includes two transmission gears 41 and a driving gear 42. The two transmission gears 41 are correspondingly installed on the same side ends of the two crushing roller teeth 31 and are transmission-connected therebetween. The driving gear 42 is fixed on the output shaft of the driving motor, and the driving gear 42 is transmission-connected to a transmission gear 41.

[0063] Preferably, the first gear assembly 4 and the second gear assembly are installed in the same manner.

[0064] In a specific embodiment of the utility model, the screening mechanism 6 also includes two mounting grooves 64 symmetrically fixed on the inner wall of the screening chamber 12, the two mounting grooves 64 are arranged obliquely downward along the axial direction of the crushing roller teeth 31, and the grooves are opposite, the two side edges of the screen plate 61 are respectively abutted against the groove walls on one side of the two mounting grooves 64, and the elastic member 63 includes a plurality of compression springs 631, one end of the plurality of compression springs 631 is fixedly connected to the top surface of the screen plate 61, and the other end is fixedly connected to the groove wall on the other side of the mounting groove 64.

[0065] The two side ends of the sieve plate 61 are located in the mounting groove bodies 64 on both sides, and are connected to the mounting groove bodies 64 through multiple compression springs 631. The compression springs 631 press the sieve plate 61 against the groove wall of the mounting groove body 64. When the vibrating end of the vibrator 62 drives the sieve plate 61 to vibrate, the compression springs 631 always have a tendency to press the sieve plate 61 against the groove wall, thereby improving the vibration effect.

[0066] In a specific embodiment of the utility model, the vibrator 62 includes a screening motor 621, a connecting shaft 622 and a plurality of cams 623. The side wall of the screening chamber 12 is symmetrically provided with two through holes, the connecting shaft 622 passes through and is rotatably connected to the through holes. The screening motor 621 is fixed on the crushing box 1 and is transmission-connected to the connecting shaft 622 through a coupling. A plurality of cams 623 are fixed on the connecting shaft 622 to lift the screen plate 61 up and down.

[0067] The screening motor 621 drives the connecting shaft 622 to rotate, and the multiple cams 623 rotate. When the protruding end contacts the bottom of the sieve plate 61, the sieve plate 61 is pushed up and continues to rotate. The protruding end moves away from the sieve plate 61. The sieve plate 61 moves downward under the action of the compression spring 631 and abuts against the groove wall of the mounting groove body 64. The reciprocating cycle forms a vibration drive for the sieve plate 61 to screen and grind the medicinal materials on the sieve plate 61.

[0068] In a specific embodiment of the present invention, a plurality of filter holes 5111 are formed on the conveyor belt 511 of the conveyor belt assembly 51 .

[0069] The filter holes 5111 on the conveyor belt 511 can perform preliminary screening on the medicinal material powder produced after being cut by the crushing roller cutter 721 .

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A medicinal material pre-crushing powder screening device, characterized in that: include: A crushing box (1), the interior of the crushing box (1) is divided into a crushing chamber (11) and a screening chamber (12) by a partition (9), a connecting hole (2) is provided on the partition (9), and a feed port (13) is provided on the top of the crushing box (1) corresponding to the crushing chamber (11); A medicinal material pre-crushing mechanism (3), the medicinal material pre-crushing mechanism (3) comprising two crushing roller teeth (31) and a driving motor, the two crushing roller teeth (31) being rotatably connected in the crushing chamber (11), a medicinal material crushing area being formed between the two crushing roller teeth (31), the medicinal material crushing area corresponding to the lower part of the feed port (13), the driving motor being fixed on the crushing box (1) and being transmission-connected to the two crushing roller teeth (31) via a first gear assembly (4); A conveying mechanism (5), the conveying mechanism (5) comprising a conveyor belt assembly (51) and a conveying motor, the conveyor belt assembly (51) being installed in the crushing chamber (11) and corresponding to the lower part of the medicinal material crushing area, the conveying motor being fixed on the crushing box (1) and being connected to the conveyor belt assembly (51) through a transmission assembly; A screening mechanism (6), the screening mechanism (6) comprising a screen plate (61) and a vibrator (62), the screen plate (61) being obliquely connected to the inner wall of the screening chamber (12) via an elastic member (63), the output end of the conveyor belt assembly (51) passing through the connecting hole (2) corresponding to the top of the screen plate (61), the vibrator (62) being mounted on the crushing box (1) and the vibrating end abutting against the bottom of the screen plate (61), and the screening chamber (12) being provided with a medicinal material outlet (14) at the oblique lower end side corresponding to the screen plate (61).

2. The medicinal material pre-crushing powder screening device according to claim 1, characterized in that: It also comprises a medicinal material fine crushing mechanism (7), the medicinal material fine crushing mechanism (7) comprising a herringbone guide plate (71), two crushing components (72) and a crushing motor, the herringbone guide plate (71) being fixed to the inner wall of the crushing chamber (11) and the top tip corresponding to the bottom of the medicinal material crushing area, the two crushing components (72) being symmetrically mounted on the inner wall of the crushing chamber (11) and the crushing feed ends thereof corresponding to the lower end of the herringbone guide plate (71), and the crushing motor being fixed to the crushing box (1) and being transmission-connected to the crushing components (72) via a second gear assembly.

3. The medicinal material pre-crushing powder screening device according to claim 2, characterized in that: The crushing assembly (72) comprises a crushing roller (721), a knife plate (722) and a position adjustment assembly (723). The crushing chamber (11) is provided with mounting holes on both symmetrical side plates. Both ends of the crushing roller (721) penetrate through and are rotatably connected to the mounting holes. The position adjustment assembly (723) is mounted on the crushing box (1) and its adjustment end penetrates into the crushing chamber (11). The side of the knife plate (722) opposite to the crushing roller (721) is an arc-shaped surface. The knife plate (722) is mounted on the adjustment end of the position adjustment assembly (723) to adjust the distance between the arc-shaped surface and the crushing roller (721). The lower end of the herringbone guide plate (71) corresponds to the arc-shaped surface of the knife plate (722). The crushing motor is fixed on the crushing box (1) and is transmission-connected to the crushing roller (721) through the second gear assembly.

4. The medicinal material pre-crushing powder screening device according to claim 3, characterized in that: The position adjustment component (723) comprises two guide rods (7231), an adjustment screw (7232) and an adjustment nut (7233); two guide holes and a through hole are provided on the side plate of the crushing box (1); the two guide rods (7231) are slidably connected to the two guide holes respectively; the knife plate (722) is fixed to one end of the two guide rods (7231); the adjustment nut (7233) is fixed to the through hole; the adjustment screw (7232) is threadedly connected to the adjustment nut (7233); and one end of the adjustment screw (7232) is rotatably connected to the knife plate (722).

5. The medicinal material pre-crushing powder screening device according to claim 4, characterized in that: The knife plate (722) is provided with a blind hole (7221) corresponding to the adjusting screw (7232), the side wall of the blind hole (7221) is provided with an annular groove (7222), the end of the adjusting screw (7232) is sleeved with an annular plate (7223), and the annular plate (7223) is slidably connected in the annular groove (7222).

6. The medicinal material pre-crushing powder screening device according to claim 3, characterized in that: The second gear assembly comprises two driven gears and a driving gear, the two driven gears are correspondingly mounted on the same side ends of the two crushing roller cutters (721) and are transmission-connected with each other, the driving gear is fixed on the output shaft of the crushing motor, and the driving gear is transmission-connected with one of the driven gears.

7. The medicinal material pre-crushing powder screening device according to claim 1, characterized in that: Two connection holes are provided on the symmetrical side plates of the crushing box (1), and the two ends of the two crushing roller teeth (31) pass through and are rotatably connected to the two connection holes. The first gear assembly (4) comprises two transmission gears (41) and a driving gear (42). The two transmission gears (41) are correspondingly mounted on the same side ends of the two crushing roller teeth (31) and are transmission-connected therebetween. The driving gear (42) is fixed on the output shaft of the driving motor, and the driving gear (42) is transmission-connected to one of the transmission gears (41).

8. The medicinal material pre-crushing powder screening device according to claim 1, characterized in that: The screening mechanism (6) further comprises two mounting grooves (64) symmetrically fixed on the inner wall of the screening chamber (12); the two mounting grooves (64) are arranged obliquely downward along the axial direction of the crushing roller teeth (31), and the grooves are opposite to each other; the two side edges of the screen plate (61) are respectively in contact with the groove walls on one side of the two mounting grooves (64); the elastic member (63) comprises a plurality of compression springs, one end of each of the plurality of compression springs is fixedly connected to the top surface of the screen plate (61), and the other end is fixedly connected to the groove wall on the other side of the mounting groove (64).

9. The medicinal material pre-crushing powder screening device according to claim 8, characterized in that: The vibrator (62) comprises a screening motor (621), a connecting shaft (622) and a plurality of cams (623); the side wall of the screening chamber (12) is symmetrically provided with two through holes, the connecting shaft (622) passes through and is rotatably connected to the through holes; the screening motor (621) is fixed to the crushing box (1) and is transmission-connected to the connecting shaft (622) via a coupling; the plurality of cams (623) are fixed to the connecting shaft (622) to lift the screen plate (61) up and down.

10. The medicinal material pre-crushing powder screening device according to claim 1, characterized in that: A plurality of filter holes (5111) are provided on the conveyor belt (511) of the conveyor belt assembly (51).

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