A continuous extraction device and method for traditional Chinese medicinal materials

Abstract

The application belongs to the technical field of traditional Chinese medicine extraction, and provides a continuous extraction device and method for traditional Chinese medicinal materials. The device comprises a shell, water inlet pipes and water outlet pipes are communicated with both ends of the shell, two groups of synchronous wheels are rotatably installed on a side wall in the shell, the two groups of synchronous wheels are rotatably installed with a synchronous belt, and a motor for driving one group of synchronous wheels to rotate is fixedly installed on the outer side of the shell, a plurality of groups of installation plates are fixedly installed on the synchronous belt, and filter baskets are arranged on the installation plates. A feeding pipe is fixedly installed on the side wall of the shell, and the discharge end of the feeding pipe is located in the synchronous belt. Compared with the prior art, the beneficial effects of the application are as follows: the continuous extraction operation of traditional Chinese medicinal materials is realized through the continuous operation of a plurality of groups of filter baskets and the flow of extraction liquid, manual cleaning of the extracted traditional Chinese medicinal materials is not required, and the extraction efficiency of traditional Chinese medicinal materials is improved.

Description

Technical Field

[0001] This invention belongs to the field of traditional Chinese medicine extraction technology, and particularly relates to a continuous extraction device and method for traditional Chinese medicinal materials. Background Technology

[0002] Extraction, also known as solvent extraction or liquid-liquid extraction, is a unit operation that separates mixtures by utilizing the different solubilities of components in a solvent. In other words, it is a method that uses the difference in solubility or partition coefficient of a substance in two immiscible solvents to transfer a solute from one solvent to the other.

[0003] Most existing Chinese herbal medicine extraction devices can only perform a single extraction. After extraction, the extracted herbs need to be removed and replaced with new extract and herbs, which increases the user's workload and results in low extraction efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a continuous extraction device and method for Chinese medicinal materials, which aims to solve the technical problem of low extraction efficiency caused by the need to change the extraction solution and Chinese medicinal materials multiple times in the prior art.

[0005] The present invention is implemented as follows: a continuous extraction device for Chinese medicinal materials includes a shell, with an inlet pipe and an outlet pipe respectively connected to both ends of the shell. Two sets of synchronous pulleys are rotatably installed on one side wall inside the shell. The two sets of synchronous pulleys are rotatably mounted on a synchronous belt. A motor that drives one set of synchronous pulleys to rotate is fixedly installed on the outer side of the shell. Multiple sets of spaced mounting plates are fixedly installed on the synchronous belt. Filter baskets are provided on the mounting plates.

[0006] A feed pipe is fixedly installed on the side wall of the housing. The outlet end of the feed pipe is located inside the synchronous belt. The projection of the outlet end of the feed pipe onto the bottom surface of the housing interferes with the rotation trajectory of the filter basket. A guide plate for exporting the extracted medicinal materials is fixedly installed on the side wall of the housing.

[0007] A further technical solution: A first support plate and a second support plate are fixedly installed on the inner side wall of the housing. When the mounting plate moves in the horizontal section above the synchronous belt, it contacts the second support plate. When the mounting plate moves in the horizontal section below the synchronous belt, it contacts the first support plate.

[0008] A further technical solution: A camera for detecting the position of the filter basket is fixedly installed at one end of the feed pipe located inside the housing.

[0009] Further technical solution: The guide plate has a U-shaped cross section. The guide plate is located on the end of the housing away from the feed pipe. The guide plate passes through the side wall of the housing and one end of the guide plate extends into the synchronous belt. The bottom surface of the guide plate has a through hole located inside the housing.

[0010] A further technical solution: A toothed ring is fixedly installed at the end of the filter basket. The toothed ring is located on the outer side of the filter basket and is coaxially arranged with the filter basket. A rack that works with the toothed ring is fixedly installed on the side wall of the housing. When the filter basket moves on the horizontal section below the synchronous belt, the toothed ring and the rack mesh.

[0011] A further technical solution: A star-shaped partition mesh plate is fixedly installed inside the filter basket, and the height of the partition mesh plate is less than the height of the filter basket.

[0012] A further technical solution: A first connecting chamber is fixedly installed inside the housing. The first connecting chamber is parallel to the first support plate. The side of the first connecting chamber near the bottom of the housing is connected to multiple sets of spaced nozzles. The first connecting chamber is connected to a liquid pump fixedly installed on the side of the housing.

[0013] A further technical solution: A second connecting chamber is fixedly installed at the end of the housing away from the feed pipe. The second connecting chamber is provided with a horizontal section and an arc-shaped section. The center of the arc-shaped section is located on the rotation axis of the synchronous pulley. Multiple sets of spaced air blowing holes are opened on the side of the second connecting chamber near the synchronous belt. A fan for supplying air into the second connecting chamber is fixedly installed on the second connecting chamber.

[0014] A further technical solution: A striking plate is rotatably installed on the side of the second connecting chamber near the synchronous belt. A support block with a triangular cross-section is fixedly installed on the end of the striking plate away from its rotation axis. A pull wire is fixedly installed on the end of the striking plate away from its rotation axis. The end of the pull wire away from the striking plate is fixedly connected to the second connecting chamber. When the filter basket moves, the striking plate is pushed to rotate by the support block.

[0015] The present invention also provides an extraction method, which is applied to the above-mentioned continuous extraction device for traditional Chinese medicine, and includes the following steps:

[0016] Step S1: Close the drain pipe, add extractant into the shell through the inlet pipe until the extractant in the shell reaches the set height, then open the drain pipe and the extractant in the shell flows out and the inlet and outlet extractant are kept in balance.

[0017] Step S2: The synchronous belt is driven to rotate by the motor, and the synchronous belt drives the filter basket to rotate;

[0018] Step S3: Put the pulverized Chinese medicinal materials into the feed pipe. The Chinese medicinal materials fall into the filter basket through the feed pipe. Under the action of the filter basket, the Chinese medicinal materials are extracted by flowing countercurrently upward in the extraction liquid.

[0019] Step S4: When the filter basket moves to the bend of the synchronous belt, the opening of the filter basket gradually rotates from upward to downward. When the filter basket rotates, the extracted Chinese medicinal materials inside fall downward onto the guide plate, and the Chinese medicinal materials move along the guide plate to the external collection device.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. When the filter basket opening is facing upwards, add the Chinese medicinal herbs. Then, the filter basket moves horizontally for extraction. Afterwards, when the filter basket opening is facing downwards, the Chinese medicinal herbs inside are poured out. As the synchronous belt rotates, the filter basket opening faces upwards again, and then new Chinese medicinal herbs are added to continue the extraction. Through the continuous operation of multiple sets of filter baskets and the flow of extract, the continuous extraction of Chinese medicinal herbs is achieved. There is no need for manual cleaning of the extracted Chinese medicinal herbs and multiple shutdowns to replace Chinese medicinal herbs are avoided, thus improving the extraction efficiency of Chinese medicinal herbs.

[0022] 2. When the Chinese medicinal herbs enter the filter basket, they are distributed in different areas by the separating mesh plate. As the filter basket moves laterally, it rotates under the action of the toothed ring and toothed rack. With the rotation of the filter basket, the Chinese medicinal herbs pressed against the filter basket and separating mesh plate are continuously moved by the extraction liquid. This ensures that the Chinese medicinal herbs can fully contact the extraction liquid, avoiding the accumulation of Chinese medicinal herbs that would prevent them from fully contacting the extraction liquid. At the same time, it also prevents some Chinese medicinal herbs from floating on the surface of the extraction liquid under the pressure, thus ensuring the extraction effect of the Chinese medicinal herbs.

[0023] 3. When the filter basket containing Chinese medicinal herbs moves horizontally, the liquid pump draws the extract and delivers it to the first connecting chamber. The extract is sprayed downwards quickly through the nozzle, which wets the Chinese medicinal herbs floating on the surface of the extract. At the same time, the downward-flowing extract exerts a downward force on the Chinese medicinal herbs in the filter basket, causing the floating Chinese medicinal herbs to sink into the extract, further improving the extraction effect of the Chinese medicinal herbs.

[0024] 4. The downward flow of air and repeated tapping of the tapping plate cause the Chinese medicinal materials in the filter basket and the residual extract on the filter basket to fall down, further reducing the residue of extract on the filter basket and avoiding residue of Chinese medicinal materials. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall first-view structure of the present invention.

[0026] Figure 2 This is a schematic diagram of the overall second-view structure of the present invention.

[0027] Figure 3 This is a schematic diagram of the internal structure of the shell in this invention from a first-view perspective.

[0028] Figure 4 This is a schematic diagram of the internal structure of the shell in this invention from a first-view perspective.

[0029] Figure 5 This is a schematic diagram of the synchronous belt structure in this invention.

[0030] Figure 6This is a schematic diagram of the filter basket in this invention.

[0031] Figure 7 This is a schematic diagram of the internal structure of the filter basket in this invention.

[0032] Figure 8 This is a cross-sectional view of the second connecting chamber in this invention.

[0033] In the attached diagram: 1. Housing; 2. Inlet pipe; 3. Drain pipe; 4. Synchronous pulley; 5. Synchronous belt; 6. Motor; 7. Mounting plate; 8. Filter basket; 9. Separating mesh plate; 10. Gear ring; 11. Gear rack; 12. First support plate; 13. Second support plate; 14. First connecting chamber; 15. Nozzle; 16. Liquid pump; 17. Guide plate; 18. Through hole; 19. Second connecting chamber; 20. Fan; 21. Air blowing hole; 22. Striking plate; 23. Support block; 24. Pull wire; 25. Feed pipe; 26. Camera. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0035] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0036] like Figures 1-8 As shown, this invention provides a continuous extraction device for Chinese medicinal materials, comprising a housing 1, with an inlet pipe 2 and an outlet pipe 3 connected to both ends of the housing 1 respectively. Two sets of synchronous pulleys 4 are rotatably mounted on one side wall inside the housing 1. The two sets of synchronous pulleys 4 are rotatably mounted on a synchronous belt 5, and a motor 6 that drives one set of synchronous pulleys 4 is fixedly mounted on the outer side of the housing 1. Multiple sets of spaced mounting plates 7 are fixedly mounted on the synchronous belt 5. A filter basket 8 is provided on the mounting plate 7. The filter basket 8 is cylindrical and has an open structure at only one end. Multiple sets of spaced water holes for the extract to freely enter and exit are opened on the side wall of the filter basket 8. A first support plate 12 and a second support plate 13 are fixedly mounted on the inner side wall of the housing 1. When the horizontal section of the mounting plate 7 above the synchronous belt 5 moves, it contacts the second support plate 13. When the horizontal section of the mounting plate 7 below the synchronous belt 5 moves, it contacts the first support plate 12.

[0037] A feed pipe 25 is fixedly installed on the side wall of the housing 1. The outlet end of the feed pipe 25 is located inside the synchronous belt 5. The projection of the outlet end of the feed pipe 25 onto the bottom surface of the housing 1 interferes with the rotation trajectory of the filter basket 8. A camera 26 for detecting the position of the filter basket 8 is fixedly installed at one end of the feed pipe 25 inside the housing 1. A guide plate 17 for exporting the extracted medicinal materials is fixedly installed on the side wall of the housing 1. The cross-section of the guide plate 17 is U-shaped. The guide plate 17 is located at the end of the housing 1 away from the feed pipe 25. The guide plate 17 penetrates the side wall of the housing 1 and one end of the guide plate 17 extends into the synchronous belt 5. A through hole 18 located inside the housing 1 is opened on the bottom surface of the guide plate 17.

[0038] In practical application, the drain pipe 3 is first closed, and the extractant is added into the housing 1 through the inlet pipe 2 so that the extractant in the housing 1 reaches the set height. Then, the drain pipe 3 is opened and the extractant in the housing 1 flows out, and the inlet and outlet extractants are kept in balance to keep the height of the extractant in the housing 1 stable. The motor 6 drives the synchronous belt 5 to rotate, and the synchronous belt 5 drives the filter basket 8 to rotate. When the filter basket 8 moves on the horizontal part below the synchronous belt 5, the filter basket 8 is immersed in the extractant at the set height, and the flow direction of the extractant is opposite to the movement direction of the filter basket 8.

[0039] The position of the filter basket 8 is detected by the camera 26. When the filter basket 8 moves below the feed pipe 25, the crushed Chinese medicinal materials are put into the feed pipe 25. The Chinese medicinal materials fall into the filter basket 8 through the feed pipe 25. Under the action of the filter basket 8, the Chinese medicinal materials flow upward in the extract. The extract enters the filter basket 8 through the water holes on the filter basket 8 and comes into contact with the Chinese medicinal materials in the filter basket 8. After extraction, the extract will leave the filter basket 8 again through the water holes. The Chinese medicinal materials cannot pass through the water holes and remain in the filter basket 8. The fresh solvent comes into contact with the almost completely extracted residue that is about to be discharged, while the Chinese medicinal materials with the highest concentration come into contact with the highest concentration extract that is about to be discharged. The maximum concentration difference is maintained throughout the process, which improves the extraction efficiency, reduces the amount of solvent used, and results in a high concentration of extract.

[0040] When the filter basket 8 moves to the bend of the synchronous belt 5, the opening of the filter basket 8 gradually rotates from upward to downward. As the filter basket 8 rotates, the extracted Chinese medicinal materials inside fall downward onto the guide plate 17. A large amount of extract carried on the Chinese medicinal materials falls into the housing 1 through the through hole 18 on the guide plate 17. Then, the Chinese medicinal materials move along the guide plate 17 to the external collection device. The residual extract can be further collected and separated by the collection device with filtration equipment. After the filter basket 8 opens downward, the Chinese medicinal materials inside are poured out. As the synchronous belt 5 rotates, the opening of the filter basket 8 opens upward again, and then new Chinese medicinal materials can be added to continue the extraction. The continuous operation of multiple sets of filter baskets 8 and the flow of extract can achieve continuous extraction of Chinese medicinal materials. There is no need for manual cleaning of the extracted Chinese medicinal materials and multiple shutdowns to replace the Chinese medicinal materials are avoided, thus improving the extraction efficiency of Chinese medicinal materials.

[0041] like Figures 3-5 As shown, this invention provides a continuous extraction device for Chinese medicinal materials. A toothed ring 10 is fixedly installed at the end of the filter basket 8. The toothed ring 10 is located on the outer side of the filter basket 8 and is coaxially arranged with the filter basket 8. A toothed rack 11 that cooperates with the toothed ring 10 is fixedly installed on the side wall of the housing 1. When the filter basket 8 moves on the horizontal section below the synchronous belt 5, the toothed ring 10 and the toothed rack 11 mesh.

[0042] Specifically, a cross-shaped partition plate 9 is fixedly installed inside the filter basket 8, and the height of the partition plate 9 is less than the height of the filter basket 8.

[0043] In practical application, when the Chinese medicinal materials enter the filter basket 8, they are distributed in different areas by the partition mesh plate 9. As the filter basket 8 moves laterally, it rotates under the action of the toothed ring 10 and toothed rack 11. This rotation, via the partition mesh plate 9, causes the Chinese medicinal materials to rotate within the basket. Because the filter basket 8 moves counter-currently in the extract, the Chinese medicinal materials are pressed against one side wall of the filter basket 8 and the partition mesh plate 9 by the extract. With the rotation of the filter basket 8, the Chinese medicinal materials pressed against the partition mesh plate 9 continue to move under the pressure of the extract, ensuring that all the Chinese medicinal materials can fully contact the extract. This prevents the accumulation of Chinese medicinal materials, which would otherwise prevent them from fully contacting the extract, and also prevents some of the Chinese medicinal materials from floating upwards on the surface of the extract under pressure, thus ensuring the extraction effect.

[0044] like Figures 3-5 As shown, this invention provides a continuous extraction device for Chinese medicinal materials. A first connecting chamber 14 is fixedly installed inside the housing 1. The first connecting chamber 14 is parallel to the first support plate 12. Multiple sets of spaced nozzles 15 are connected to the side of the first connecting chamber 14 near the bottom of the housing 1. The first connecting chamber 14 is connected to a liquid pump 16 fixedly installed on the side of the housing 1.

[0045] In practical application, when the filter basket 8 containing Chinese medicinal herbs moves laterally, the liquid pump 16 draws the extract and delivers it into the first connecting chamber 14. The extract is then sprayed downwards rapidly through the nozzle 15, wetting the Chinese medicinal herbs floating on the surface of the extract. At the same time, the downward-flowing extract exerts a downward force on the Chinese medicinal herbs in the filter basket 8, causing the floating Chinese medicinal herbs to sink into the extract, further improving the extraction effect of the Chinese medicinal herbs.

[0046] like Figure 3 , Figure 4 , Figure 8As shown, this invention provides a continuous extraction device for Chinese medicinal materials. A second connecting chamber 19 is fixedly installed at the end of the housing 1 away from the feed pipe 25. The second connecting chamber 19 is provided with a horizontal section and an arc-shaped section. The center of the arc-shaped section is located on the rotation axis of the synchronous pulley 4. Multiple sets of spaced air blowing holes 21 are opened on the side of the second connecting chamber 19 near the synchronous belt 5. A fan 20 for conveying air into the second connecting chamber 19 is fixedly installed on the second connecting chamber 19.

[0047] Specifically, a striking plate 22 is rotatably installed on the side of the second connecting chamber 19 near the synchronous belt 5. A support block 23 with a triangular cross section is fixedly installed at the end of the striking plate 22 away from its axis of rotation. A pull wire 24 is fixedly installed at the end of the striking plate 22 away from its axis of rotation. The end of the pull wire 24 away from the striking plate 22 is fixedly connected to the second connecting chamber 19. When the filter basket 8 moves, the striking plate 22 is pushed to rotate by the support block 23.

[0048] In practical application, the blower 20 delivers air into the second connecting chamber 19. The air flows downward through the blow hole 21. At this time, the filter basket 8 carrying the Chinese medicinal materials leaves the extract and the opening flips. The downward-flowing air blows the Chinese medicinal materials downward away from the filter basket 8. At the same time, it can blow down the extract remaining on the filter basket 8 and the separator plate 9, reducing the residue of extract on the filter basket 8 and preventing the extract from dripping onto other structures when the filter basket 8 moves later, reducing the waste of extract and improving the extraction effect.

[0049] When the opening of the filter basket 8 moves laterally, the striking plate 22 will contact the upper surface of the filter basket 8. As the filter basket 8 moves, the support block 23 contacts the upper surface of the filter basket 8 and pushes the support block 23 to rotate upward. When the filter basket 8 is separated from the support block 23, the striking plate 22 will rotate downward under the action of gravity and contact the upper surface of the next set of filter baskets 8. After the striking plate 22 hits the filter basket 8, it will bounce upward and fall down again to hit the filter basket 8, thereby achieving multiple taps on the filter basket 8. Under the action of tapping, the Chinese medicinal materials in the filter basket 8 and the residual extract on the filter basket 8 will fall down, further reducing the residue of extract on the filter basket 8 and avoiding the residue of Chinese medicinal materials. The pull line 24 prevents the striking plate 22 from rotating downward excessively.

[0050] like Figures 1-8 As shown, the present invention provides an extraction method, which is applied to the above-mentioned continuous extraction device for traditional Chinese medicine, and includes the following steps:

[0051] Step S1: Close the drain pipe 3, add the extractant into the housing 1 through the water inlet pipe 2, so that the extractant in the housing 1 reaches the set height, and then open the drain pipe 3 so that the extractant in the housing 1 flows out and the inlet and outlet extractants are balanced.

[0052] Step S2: The motor 6 drives the timing belt 5 to rotate, and the timing belt 5 drives the filter basket 8 to rotate;

[0053] Step S3: The pulverized Chinese medicinal materials are put into the feed pipe 25. The Chinese medicinal materials fall into the filter basket 8 through the feed pipe 25. Under the action of the filter basket 8, the Chinese medicinal materials are extracted by flowing countercurrently upward in the extraction liquid.

[0054] Step S4: When the filter basket 8 moves to the bend of the synchronous belt 5, the opening of the filter basket 8 gradually rotates from upward to downward. When the filter basket 8 rotates, the extracted Chinese medicinal materials inside fall downward onto the guide plate 17, and the Chinese medicinal materials move along the guide plate 17 to the external collection device.

[0055] 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, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0056] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A continuous extraction device for traditional Chinese medicinal materials, comprising a shell (1), with an inlet pipe (2) and an outlet pipe (3) respectively connected to both ends of the shell (1), characterized in that, Two sets of synchronous pulleys (4) are rotatably installed on one side wall inside the housing (1). The two sets of synchronous pulleys (4) are rotatably installed on a synchronous belt (5). A motor (6) that drives one set of synchronous pulleys (4) to rotate is fixedly installed on the outer side of the housing (1). Multiple sets of spaced mounting plates (7) are fixedly installed on the synchronous belt (5). A filter basket (8) is provided on the mounting plate (7). A feed pipe (25) is fixedly installed on the side wall of the housing (1). The discharge end of the feed pipe (25) is located in the synchronous belt (5). The projection of the discharge end of the feed pipe (25) onto the bottom surface of the housing (1) interferes with the rotation trajectory of the filter basket (8). A guide plate (17) for exporting the extracted medicinal materials is fixedly installed on the side wall of the housing (1). The guide plate (17) has a U-shaped cross section. The guide plate (17) is located on the housing (1) at one end away from the feed pipe (25). The guide plate (17) penetrates the side wall of the housing (1) and one end of the guide plate (17) extends into the synchronous belt (5). The bottom surface of the guide plate (17) is provided with a through hole (18) located in the housing (1). A first connecting chamber (14) is fixedly installed inside the housing (1). The first connecting chamber (14) is parallel to the first support plate (12). The side of the first connecting chamber (14) near the bottom surface of the housing (1) is connected to multiple sets of spaced nozzles (15). The first connecting chamber (14) is connected to a liquid pump (16) fixedly installed on the side of the housing (1). A second connecting chamber (19) is fixedly installed at one end of the housing (1) away from the feed pipe (25). The second connecting chamber (19) is provided with a horizontal section and an arc section. The center of the arc section is located on the rotation axis of the synchronous pulley (4). Multiple sets of air blowing holes (21) are opened on the side of the second connecting chamber (19) near the synchronous belt (5). A fan (20) for conveying air into the second connecting chamber (19) is fixedly installed on the second connecting chamber (19).

2. The continuous extraction device for traditional Chinese medicinal materials according to claim 1, characterized in that, The inner wall of the housing (1) is fixedly installed with a first support plate (12) and a second support plate (13) distributed horizontally. When the horizontal section of the mounting plate (7) above the synchronous belt (5) moves, it contacts the second support plate (13). When the horizontal section of the mounting plate (7) below the synchronous belt (5) moves, it contacts the first support plate (12).

3. The continuous extraction device for traditional Chinese medicinal materials according to claim 1, characterized in that, The feed pipe (25) is fixedly installed with a camera (26) for detecting the position of the filter basket (8) at one end inside the housing (1).

4. The continuous extraction device for traditional Chinese medicinal materials according to claim 1, characterized in that, A toothed ring (10) is fixedly installed at the end of the filter basket (8). The toothed ring (10) is located on the outer side of the filter basket (8) and is coaxially arranged with the filter basket (8). A rack (11) that works with the toothed ring (10) is fixedly installed on the side wall of the housing (1). When the filter basket (8) moves on the horizontal section below the synchronous belt (5), the toothed ring (10) meshes with the rack (11).

5. The continuous extraction apparatus for traditional Chinese medicinal materials according to claim 1, characterized in that, The filter basket (8) is fixedly installed with a cross-shaped partition mesh plate (9), the height of which is less than the height of the filter basket (8).

6. The continuous extraction apparatus for traditional Chinese medicinal materials according to claim 1, characterized in that, A striking plate (22) is rotatably mounted on the side of the second connecting chamber (19) near the synchronous belt (5). A support block (23) with a triangular cross section is fixedly mounted on the end of the striking plate (22) away from its rotation axis. A pull wire (24) is fixedly mounted on the end of the striking plate (22) away from its rotation axis. The end of the pull wire (24) away from the striking plate (22) is fixedly connected to the second connecting chamber (19). When the filter basket (8) moves, it pushes the striking plate (22) to rotate through the support block (23).

7. An extraction method, characterized in that, An application of a continuous extraction apparatus for traditional Chinese medicinal materials as described in any one of claims 1-6, comprising the following steps: Step S1: Close the drain pipe (3), add the extractant into the shell (1) through the water inlet pipe (2) so that the extractant in the shell (1) reaches the set height, and then open the drain pipe (3) so that the extractant in the shell (1) flows out and the extractant entering and exiting is balanced; Step S2: The synchronous belt (5) is driven to rotate by the motor (6), and the synchronous belt (5) drives the filter basket (8) to rotate; Step S3: Put the pulverized Chinese medicinal materials into the feed pipe (25). The Chinese medicinal materials fall into the filter basket (8) through the feed pipe (25). Under the action of the filter basket (8), the Chinese medicinal materials are extracted by flowing countercurrently upward in the extract liquid. Step S4: When the filter basket (8) moves to the bend of the synchronous belt (5), the opening of the filter basket (8) gradually rotates from upward to downward. When the filter basket (8) rotates, the Chinese medicinal materials extracted inside fall downward onto the guide plate (17), and the Chinese medicinal materials move along the guide plate (17) to the external collection device.

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