A screening device for Chinese herbal medicine pieces

Abstract

The utility model discloses a Chinese medicine slice screening device, aiming to provide a Chinese medicine slice screening device equipped with a working part for impacting materials and sundries on a screening frame. It comprises a screening box, a screening slot is provided on the screening box, the screening slot comprises a screening slot opening and a screening slot bottom, a block net and two limit plates are installed on the screening box, the limit plate is connected to the top of the screening box, a U-shaped plate is installed on the limit plate, the U-shaped plate is detachably connected to the limit plate, a screening frame is installed on the U-shaped plate, the left and right ends of the screening frame are detachably connected to the two U-shaped plates respectively, the block net is detachably connected to the screening box, the position of the block net corresponds to the position of the screen mesh up and down, a plurality of protrusions are installed on the block net, and the plurality of protrusions are evenly distributed. The beneficial effects of the utility model are: the purpose of installing a working part for impacting materials and sundries on the screening frame can be achieved; it is convenient to control the movement of the screen mesh; it is convenient to collect dust.

Description

Technical Field

[0001] The utility model relates to the technical field of medicinal material processing, in particular to a screening device for Chinese medicinal pieces. Background Art

[0002] Medicinal materials are raw materials for making medicines and play an important role in treating diseases. Chinese medicinal materials are the products developed by Chinese medicine. They contain thousands of years of Chinese medicine civilization and integrate the unique cultural phenomenon of combining Chinese and Western medicine created by modern Western medicine civilization. They are an integral part of Chinese excellent culture. The development and effective utilization of Chinese medicinal materials has a long history and are also the material basis for the development of Chinese medicine.

[0003] Chinese herbal medicine slices are Chinese medicines for prescriptions that have been processed according to the needs of Chinese medicine, or Chinese medicines that can be directly used in clinical Chinese medicine. Chinese herbal medicine slices are the essence of Chinese medicine. The medicinal properties and effects of medicinal materials will change after different processing methods. This is the characteristic and advantage of Chinese medicine. Of course, the processing of Chinese herbal medicine slices requires multiple processes. Among them, most of the Chinese herbal medicine slices made from Chinese medicinal materials are some Chinese medicines with rhizomes. After taking them out of the soil, it is necessary to screen the soil on the surface of the rhizomes. The commonly used screening machines only rely on the swinging motion of the screen when screening, which makes it easy for the rhizomes or debris on the Chinese medicine to get stuck on the screen, which directly affects the screening of Chinese herbal medicine slices. Therefore, more careful design is needed on the screening device to handle various situations.

[0004] Chinese Patent Authorization Announcement Number: CN217392917U, Authorization Announcement Date September 9, 2022, discloses a Chinese herbal medicine slice screening device, including a box body, vertical plates are welded on both sides of the top of the box body, a screening mechanism is provided on the opposite side of the vertical plate, an integrated box is welded to the bottom of the right side of the box body, an exhaust fan is connected to the right side of the vertical plate by bolts, the bottom of the exhaust fan is connected to the integrated box, the top of the exhaust fan is connected to a connecting pipe, the end of the connecting pipe away from the exhaust fan is connected to a dust hood, reinforcement blocks are welded on both sides of the dust hood, one side of the reinforcement block is welded to the vertical plate, and a controller is connected to the right side of the front of the box body by bolts. The shortcoming of this technical solution is that when performing the screening work, the material is placed in the inner cavity of the screening frame, and the lateral reciprocating motion of the screening frame is controlled to make the screening frame perform the material screening work. In this way, the material and debris inserted in the screening frame cannot be processed in time, which affects the smooth screening work of the Chinese herbal medicines.

[0005] In summary, a structure capable of promptly processing materials and debris inserted into the screening frame can be provided to enhance the screening of Chinese herbal medicines. Utility Model Content

[0006] The utility model aims to overcome the defect that the prior art cannot timely process materials and debris inserted on the screening frame, and provides a Chinese medicine decoction piece screening device equipped with a working component for impacting the materials and debris on the screening frame.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A Chinese herbal medicine slice screening device comprises a screening box, the screening box is provided with a screening slot, the screening slot comprises a screening slot opening and a screening slot bottom, the screening slot opening is placed at the top of the screening box, the screening slot bottom is placed at the bottom of the screening box, a block net and two limit plates are installed on the screening box, the two limit plates are respectively placed at the left and right ends of the screening box, the limit plates are connected to the top of the screening box, a U-shaped plate is installed on the limit plates, the U-shaped plate is detachably connected to the limit plates, a screening frame is installed on the U-shaped plate, the left and right ends of the screening frame are respectively detachably connected to the two U-shaped plates, a screen is installed on the screening frame, the block net is detachably connected to the screening box, the position of the block net corresponds to the position of the screen net up and down, a plurality of protrusions are installed on the block net, and the plurality of protrusions are evenly distributed.

[0009] In this way, a screening slot can be opened through the screening box, and the screening slot of the screening slot is placed at the top of the screening box, the bottom of the screening slot is placed at the bottom of the screening box, and a block net and two limit plates are installed on the screening box, and the two limit plates are respectively placed at the left and right ends of the screening box, and the limit plate is connected to the top of the screening box, and a U-shaped plate is installed on the limit plate, and a screening frame is installed on the U-shaped plate, and a screen is installed on the screening frame, so that the materials of Chinese herbal medicines can be placed on the screen. Not only that, the position of the block net corresponds to the position of the screen up and down, and a number of protrusions are installed on the block net, and the protrusions are evenly distributed, that is, the block net is installed at the lower end of the screen, here The detachable connection between the U-shaped plate and the limit plate allows the U-shaped plate to move left and right under the limiting effect of the limit plate, so that the material on the screen can be screened during the moving and shaking of the screening frame, so that the Chinese herbal medicine pieces are placed on the screen, and some soil and debris fall to the bottom of the screening trough. Of course, there will be some roots, soil and debris inserted on the screen, and the bumps on the block net allow the screen to be touched when it moves, so that the screen will be subjected to force, so that the roots, soil and debris inserted on the screen will be touched, thereby relieving the situation of being inserted on the screen, so that the purpose of installing a working component to impact the materials and debris on the screening frame is achieved. The detachable connection between the block net and the screening box here facilitates the installation and disassembly of the block net.

[0010] Preferably, the screening box is provided with a jack and a slot, the jack and the slot are respectively placed at the left and right ends of the screening box, the position of the jack corresponds to the position of the slot, the distance between the left and right ends of the block net is greater than the distance between the jack and the slot, and the jack and the slot are matched with the block net. In this design, by providing a jack and a slot on the screening box, the jack and the slot are respectively placed at the left and right ends of the screening box, and the position of the jack corresponds to the position of the slot, the block net can be controlled, and one end of the block net is inserted into the slot after passing through the jack, and the distance between the left and right ends of the block net here is greater than the distance between the jack and the slot, and the jack and the slot are matched with the block net, so that not only the movement of the block net can be carried out smoothly, but also one end of the block net can be placed at the outer end of the screening box, that is, the outer end of the screening slot, so that the control of the block net can be carried out smoothly.

[0011] Preferably, two moving rods are installed on the limit plate, and the two moving rods are respectively placed at the front and rear ends of the limit plate, one end of the moving rod is connected to a limit plate, and the other end of the moving rod is connected to another limit plate, and the front and rear ends of the U-shaped plate are respectively detachably connected to the two moving rods, and the distance between the front and rear ends of the two moving rods is greater than the distance between the front and rear ends of the block net. This design is achieved by installing two moving rods on the limit plate, and the two moving rods are respectively placed at the front and rear ends of the limit plate, where one end of the moving rod is connected to a limit plate, and the other end is connected to another limit plate, that is, a limiting device is installed on the limit plate. The front and rear ends of the U-shaped plate are respectively detachably connected to the two moving rods, and the distance between the front and rear ends of the two moving rods is greater than the distance between the front and rear ends of the block net, that is, the U-shaped plate can be controlled to move left and right under the limiting and guiding effect of the moving rods, so that the material on the screen can be screened during the moving and shaking of the screening frame.

[0012] Preferably, a tooth plate is installed on the screening frame, a motor and a switch assembly are installed on the screening box, the motor is electrically connected to the switch assembly, a motor shaft is installed on the motor, a gear is installed on the motor shaft, and the gear is meshed with the tooth plate. This design is achieved by installing a tooth plate on the screening frame, a motor and a switch assembly are installed on the screening box, the motor is electrically connected to the switch assembly, and a motor shaft is installed on the motor, a gear is installed on the motor shaft, and the gear is meshed with the tooth plate. In this way, under the control of the switch assembly, the electrically connected motor can be operated, thereby rotating the motor shaft. Then, under the rotation of the gear, the tooth plate will move the screening frame left and right, so as to implement the work of screening the material on the screen during the movement and shaking of the screening frame.

[0013] Preferably, the screening box is provided with an outlet, the location of the outlet corresponds to the location of the bottom of the screening slot, a receiving box is installed at the outlet, the receiving box is detachably connected to the screening box, two guide plates are installed in the screening box, the guide plates are placed between the block net and the receiving box, the two guide plates are placed at the left and right ends of the screening box, one end of the guide plate is connected to the screening box, a gap is left between the other ends of the two guide plates, and the connection between the guide plate and the screening box is an acute angle α. This design is provided with an outlet on the screening box, so that the location of the outlet corresponds to the location of the bottom of the screening slot, that is, the roots, soil and debris falling from the bottom of the screening slot are facing the outlet, and the receiving box is installed at the outlet, that is, the roots, soil and debris falling are directly placed in the receiving box, and the detachable connection between the receiving box and the screening box can directly control the receiving box to enter and exit the screening slot, so as to remove the roots, soil and debris. Two guide plates are also installed in the screening box here. The guide plates are placed between the block net and the receiving box. The two guide plates are respectively placed at the left and right ends of the screening box. One end of the guide plate is connected to the screening box. A gap is left between the other ends of the two guide plates. The connection between the guide plate and the screening box is at an acute angle α. Such structural design and installation can allow the roots, soil and debris that fall from the screen to fall through the gap between the two guide plates under the guiding effect of the guide plates until they fall into the receiving box.

[0014] Preferably, the screening box is equipped with an integrated box and an exhaust fan, the exhaust fan is electrically connected to the switch assembly, the integrated box is provided with a dust outlet, a switch door is installed at the dust outlet, the switch door is detachably connected to the integrated box, the bottom end of the limit plate is connected to the screening box, the top end of the limit plate is equipped with a dust hood, a plurality of reinforcement blocks are installed on the dust hood, the plurality of reinforcement blocks are symmetrically distributed at the left and right ends of the dust hood, the dust hood is connected to the limit plate through the reinforcement blocks, the exhaust fan is equipped with a connecting pipe, a plurality of exhaust pipes are installed on the connecting pipe, the plurality of exhaust pipes are evenly distributed on the dust hood, one end of the exhaust pipe is connected to the dust hood, the other end of the exhaust pipe is connected to the connecting pipe, the position of the exhaust pipe corresponds to the position of the screen mesh up and down. This design is to install an integrated box and an exhaust fan on the screening box. The exhaust fan is electrically connected to the switch assembly, and a dust hood is installed on the top of the limit plate. The dust hood is installed with several reinforcement blocks. The dust hood is connected to the limit plate through the reinforcement blocks. A connecting pipe is installed on the exhaust fan. Several exhaust pipes are installed on the connecting pipe. Several exhaust pipes are evenly distributed on the dust hood. One end of the exhaust pipe is connected to the dust hood, and the other end is connected to the connecting pipe. The position of the exhaust pipe corresponds to the position of the screen. Then, the exhaust fan can be operated under the control of the switch assembly. The exhaust fan can absorb the dust in the screening slot through the exhaust pipe to remove the dust of the Chinese herbal medicine slices, and the absorbed dust can be introduced into the integrated box through the connecting pipe. A dust outlet is provided on the integrated box here, and a switch door is installed at the dust outlet. The switch door is detachably connected to the integrated box, and the dust outlet can be opened through the switch door to facilitate the dumping of dust.

[0015] The beneficial effects of the utility model are: the purpose of installing a working component for impacting materials and sundries on the screening frame can be achieved; the moving work of the screen can be controlled conveniently; and dust can be collected conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the installation of the screening frame of the utility model;

[0018] Figure 3 It is a distribution diagram of the guide plate of the utility model;

[0019] Figure 4 This is a schematic diagram of the installation of the block net of the utility model;

[0020] Figure 5 yes Figure 4 The enlarged cross-sectional view at A in the middle;

[0021] Figure 6It is a distribution diagram of the utility model bumps.

[0022] In the figure: 1. screening box, 2. guide plate, 3. screening trough, 4. outlet, 5. receiving box, 6. limit plate, 7. integrated box, 8. block net, 9. moving rod, 10. U-shaped plate, 11. reinforcement block, 12. screening frame, 13. screen, 14. jack, 15. slot, 16. bump, 17. tooth plate, 18. motor, 19. gear, 20. switch assembly, 21. dust hood, 22. exhaust fan, 23. connecting pipe, 24. exhaust pipe, 25. dust outlet, 26. switch door. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0024] like Figure 1 , Figure 4 and Figure 6 In the illustrated implementation case, a Chinese herbal medicine slice screening device comprises a screening box 1, a screening slot 3 is provided on the screening box 1, the screening slot 3 comprises a screening slot opening and a screening slot bottom, the screening slot opening is arranged at the top end of the screening box 1, the screening slot bottom is arranged at the bottom end of the screening box 1, a block net 8 and two limit plates 6 are installed on the screening box 1, the two limit plates 6 are respectively arranged at the left and right ends of the screening box 1, the limit plates 6 are connected to the top end of the screening box 1, a U-shaped plate 10 is installed on the limit plates 6, the U-shaped plate 10 is detachably connected to the limit plates 6, a screening frame 12 is installed on the U-shaped plate 10, the left and right ends of the screening frame 12 are respectively detachably connected to the two U-shaped plates 10, a screen 13 is installed on the screening frame 12, the block net 8 is detachably connected to the screening box 1, the position of the block net 8 corresponds to the position of the screen 13 up and down, a plurality of protrusions 16 are installed on the block net 8, and the plurality of protrusions 16 are evenly distributed.

[0025] like Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the screening box 1 is provided with a socket 14 and a slot 15, which are respectively arranged at the left and right ends of the screening box 1, the position of the socket 14 corresponds to the position of the slot 15, the distance between the left and right ends of the block net 8 is greater than the distance between the socket 14 and the slot 15, and the socket 14 and the slot 15 are matched with the block net 8. Two moving rods 9 are installed on the limit plate 6, and the two moving rods 9 are respectively arranged at the front and rear ends of the limit plate 6, one end of the moving rod 9 is connected to one limit plate 6, and the other end of the moving rod 9 is connected to the other limit plate 6, and the front and rear ends of the U-shaped plate 10 are respectively detachably connected to the two moving rods 9, and the distance between the front and rear ends of the two moving rods 9 is greater than the distance between the front and rear ends of the block net 8.

[0026] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a tooth plate 17 is installed on the screening frame 12, a motor 18 and a switch assembly 20 are installed on the screening box 1, the motor 18 is electrically connected to the switch assembly 20, a motor shaft is installed on the motor 18, a gear 19 is installed on the motor shaft, and the gear 19 is meshed with the tooth plate 17. An outlet 4 is provided on the screening box 1, and the position of the outlet 4 corresponds to the position of the bottom of the screening slot. A material receiving box 5 is installed at the outlet 4, and the material receiving box 5 is detachably connected to the screening box 1. Two guide plates 2 are installed in the screening box 1, and the guide plates 2 are placed between the block net 8 and the material receiving box 5. The two guide plates 2 are respectively placed at the left and right ends of the screening box 1, and one end of the guide plate 2 is connected to the screening box 1. A gap is left between the other ends of the two guide plates 2, and the connection between the guide plates 2 and the screening box 1 is at an acute angle α. An integrated box 7 and an exhaust fan 22 are installed on the screening box 1, and the exhaust fan 22 is electrically connected to the switch assembly 20. A dust outlet 25 is provided on the integrated box 7, and a switch door 26 is installed at the dust outlet 25. The switch door 26 is detachably connected to the integrated box 7. The bottom end of the limiting plate 6 is connected to the screening box 1, and a dust hood 21 is installed on the top of the limiting plate 6. A plurality of reinforcement blocks 11 are installed on the dust hood 21, and the plurality of reinforcement blocks 11 are symmetrically distributed at the left and right ends of the dust hood 21. The dust hood 21 is connected to the limiting plate 6 through the reinforcement blocks 11. A connecting pipe 23 is installed on the exhaust fan 22, and a plurality of exhaust pipes 24 are installed on the connecting pipe 23. The plurality of exhaust pipes 24 are evenly distributed on the dust hood 21, one end of the exhaust pipe 24 is connected to the dust hood 21, and the other end of the exhaust pipe 24 is connected to the connecting pipe 23. The position of the exhaust pipe 24 corresponds to the position of the screen 13 up and down.

[0027] First, the switch assembly 20 installed on the screening box 1 is electrically connected to the external power supply to provide energy for the motor 18 and the exhaust fan 22 on the screening box 1. Then, the material of the Chinese herbal medicine slices is placed on the screen 13 on the screening frame 12, and two limit plates 6 are installed on the screening box 1 here, and the two limit plates 6 are respectively placed on the left and right ends of the screening box 1, and the limit plates 6 are connected to the top of the screening box 1, and the U-shaped plate 10 is placed on the limit plates 6. Of course, the screening frame 12 here is installed on the U-shaped plate 10, that is, the screen 13 is under the limit effect of the limit plates 6. However, the screen 13 needs to be moved, so two moving rods 9 are installed on the limiting plate 6, and the two moving rods 9 are respectively placed at the front and rear ends of the limiting plate 6, one end of the moving rod 9 is connected to one limiting plate 6, and the other end is connected to the other limiting plate 6, and the front and rear ends of the U-shaped plate 10 are respectively detachably connected to the two moving rods 9, so the U-shaped plate 10 is connected to the limiting plate 6 through the moving rod 9, and the connection method of the U-shaped plate 10 and the moving rod 9 here is that a guide block can be installed on the U-shaped plate 10, and the moving rod 9 passes through the guide block, so the U-shaped plate 10 can move under the limiting effect of the moving rod 9 after being subjected to force.

[0028] Then, the motor 18 can be controlled by the switch assembly 20 to start working, and the motor shaft on the motor 18 starts to rotate, so that the gear 19 of the motor shaft cooperates with the tooth plate 17 on the screening frame 12 to allow the screening frame 12 to move left and right. Of course, the meshing of the gear 19 and the tooth plate 17 here is the condition for controlling the movement of the screening frame 12, and the motor 18 can be a servo motor, so that the screening frame 12 can move back and forth left and right, that is, the left and right movement of the material on the screen 13, then the material on the screen 13 can be screened during the movement and shaking of the screening frame 12, so that the Chinese herbal medicine pieces are placed on the screen 13, and some The soil and debris fall to the bottom of the screening trough. Of course, some roots, soil and debris will be inserted into the screen 13, but the screening box 1 is equipped with a block net 8, which not only corresponds to the position of the screen 13 up and down, but also has a number of protrusions 16 installed. That is, when the screen 13 moves, the block net 8 can be touched by the protrusions 16. When touched, the screen 13 will be subjected to force, so that the roots, soil and debris inserted into the screen 13 will be touched, thereby relieving the situation of being inserted into the screen 13, so that the purpose of installing a working component for impacting materials and debris on the screening frame is achieved.

[0029] Of course, the roots, soil and debris that fall here may touch the guide plate 2. The two guide plates 2 are respectively placed at the left and right ends of the screening box 1. One end of the guide plate 2 is connected to the screening box 1. There is a gap between the other ends of the two guide plates 2, and the connection between the guide plate 2 and the screening box 1 is at an acute angle α. Then, the roots, soil and debris can fall through the gap under the guiding effect of the guide plate 2 until they fall into the receiving box 5. At the same time, the exhaust fan 22 can be put into operation by controlling the switch assembly 20. A connecting pipe 23 is installed on the exhaust fan 22, and a plurality of exhaust pipes 24 are installed on the connecting pipe 23. The plurality of exhaust pipes 24 are evenly distributed on the dust hood 21. One end of the exhaust pipe 24 is connected to the dust hood 21, and the other end is connected to the connecting pipe 23. The position of the exhaust pipe 24 corresponds to the position of the screen 13 up and down. Therefore, under the operation of the exhaust fan 22, the dust in the screening slot 3 can pass through the exhaust pipe 24 and be introduced into the integrated box 7 under the guidance of the connecting pipe 23. In this way, the roots, soil, debris, and dust can be collected smoothly, that is, the screening of Chinese herbal medicines can be carried out smoothly.

[0030] After the screening work is completed, the switch assembly 20 can be controlled to stop the exhaust fan 22 and the motor 18, and the material receiving box 5 installed at the outlet 4 of the screening box 1 can be controlled to take out the collected roots, soil and debris. Of course, the switch door 26 installed at the dust outlet 25 of the integrated box 7 can also be directly controlled to take out the collected dust. The connection between the material receiving box 5 and the screening box 1 can be a pull-out type, which is convenient for smoothly taking out the material receiving box 5 under the limiting effect of the screening box 1, and the connection between the switch door 26 and the integrated box 7 can be a hinge connection, which is convenient for the switch control of the dust outlet 25.

[0031] In order to reduce the probability of damage when the screen 13 contacts the protrusion 16, the protrusion 16 can select a rolling bearing structure mode, so that the inner ring of the rolling bearing is well connected with the block net 8, and the outer ring can contact the screen 13. In this way, even if the screen 13 contacts the outer ring, the outer ring can be rotated, so the roots, soil and debris inserted in the screen 13 will still be touched, but the friction when the screen 13 contacts the protrusion 16 is reduced.

Claims

1. A Chinese herbal medicine slice screening device, characterized in that: The invention comprises a screening box (1), wherein the screening box (1) is provided with a screening slot (3), wherein the screening slot (3) comprises a screening slot opening and a screening slot bottom, wherein the screening slot opening is arranged at the top end of the screening box (1), wherein the screening slot bottom is arranged at the bottom end of the screening box (1), wherein a block net (8) and two limit plates (6) are installed on the screening box (1), wherein the two limit plates (6) are respectively arranged at the left and right ends of the screening box (1), wherein the limit plates (6) are connected to the top end of the screening box (1), wherein a U-shaped plate (10) is installed on the limit plates (6), wherein the U The mold plate (10) is detachably connected to the limit plate (6); a screening frame (12) is mounted on the U-shaped plate (10); the left and right ends of the screening frame (12) are detachably connected to the two U-shaped plates (10) respectively; a screen (13) is mounted on the screening frame (12); the block net (8) is detachably connected to the screening box (1); the position of the block net (8) corresponds to the position of the screen (13) in the upper and lower directions; a plurality of protrusions (16) are mounted on the block net (8); and the plurality of protrusions (16) are evenly distributed.

2. A Chinese medicine slice screening device according to claim 1, characterized in that: The screening box (1) is provided with a plug hole (14) and a slot (15), the plug hole (14) and the slot (15) are respectively arranged at the left and right ends of the screening box (1), the position of the plug hole (14) corresponds to the position of the slot (15) on the left and right, the distance between the left and right ends of the block net (8) is greater than the distance between the plug hole (14) and the slot (15), and the plug hole (14) and the slot (15) are matched with the block net (8).

3. A Chinese medicine slice screening device according to claim 1, characterized in that: Two moving rods (9) are mounted on the limiting plate (6), and the two moving rods (9) are respectively placed at the front and rear ends of the limiting plate (6), one end of the moving rod (9) is connected to one limiting plate (6), and the other end of the moving rod (9) is connected to the other limiting plate (6), and the front and rear ends of the U-shaped plate (10) are respectively detachably connected to the two moving rods (9), and the distance between the front and rear ends of the two moving rods (9) is greater than the distance between the front and rear ends of the stopper net (8).

4. A Chinese medicine slice screening device according to claim 1, characterized in that: A toothed plate (17) is mounted on the screening frame (12), a motor (18) and a switch assembly (20) are mounted on the screening box (1), the motor (18) and the switch assembly (20) are electrically connected, a motor shaft is mounted on the motor (18), a gear (19) is mounted on the motor shaft, and the gear (19) is meshed with the toothed plate (17).

5. A Chinese medicine slice screening device according to claim 1, characterized in that: The screening box (1) is provided with an outlet (4), the position of the outlet (4) corresponds to the position of the bottom of the screening slot in front and back, a material receiving box (5) is installed at the outlet (4), the material receiving box (5) is detachably connected to the screening box (1), two guide plates (2) are installed in the screening box (1), the guide plates (2) are placed between the block net (8) and the material receiving box (5), the two guide plates (2) are respectively placed at the left and right ends of the screening box (1), one end of the guide plate (2) is connected to the screening box (1), a gap is left between the other ends of the two guide plates (2), and the connection between the guide plate (2) and the screening box (1) forms an acute angle α.

6. A Chinese medicine slice screening device according to claim 4, characterized in that: The screening box (1) is provided with an integrated box (7) and an exhaust fan (22), the exhaust fan (22) being electrically connected to the switch assembly (20), the integrated box (7) being provided with a dust outlet (25), a switch door (26) being installed at the dust outlet (25), the switch door (26) being detachably connected to the integrated box (7), the bottom end of the limit plate (6) being connected to the screening box (1), the top end of the limit plate (6) being provided with a dust hood (21), the dust hood (21) being provided with a plurality of reinforcement blocks (11), the plurality of reinforcement blocks (11) being symmetrically arranged. The dust hood (21) is connected to the limit plate (6) via a reinforcing block (11). The exhaust fan (22) is provided with a connecting pipe (23). A plurality of exhaust pipes (24) are provided on the connecting pipe (23). The plurality of exhaust pipes (24) are evenly distributed on the dust hood (21). One end of the exhaust pipe (24) is connected to the dust hood (21). The other end of the exhaust pipe (24) is connected to the connecting pipe (23). The position of the exhaust pipe (24) corresponds to the position of the screen (13) in the upper and lower directions.

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