Traditional Chinese medicinal material component extraction and separation equipment and method
By designing the pretreatment module and reflux module of the Chinese medicinal material ingredient extraction and separation equipment, the problem that solvents are difficult to fully contact the active ingredients during the Chinese medicinal material extraction process is solved, the extraction efficiency and dissolution rate are improved, and solvent consumption and production costs are reduced.
Patent Information
- Application Number
- CN202510663192.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-22
- Publication Date
- 2025-06-20
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
If Chinese medicinal materials are not pretreated, it is difficult for the solvent to fully contact the active ingredients during the penetration process, resulting in low extraction efficiency, excessive solvent consumption, and the solvent flows in one direction, which can easily cause solvent waste, increase production costs and cause environmental pollution.
A Chinese medicinal material ingredient extraction and separation equipment is designed, including a pretreatment module and a reflow module. The pretreatment module flips the Chinese medicinal materials through the rotating ring frame and the turner to evenly absorb the solvent and improve the permeability efficiency. The reflow module re-used the refluxed solvent for pretreatment and percolation of the medicinal material through the diverter chamber and the delivery pump, and recycled.
The pretreatment module increases the contact area and permeability of the solvent and the active ingredients of the medicinal material, shortens the extraction time, and improves the dissolution rate of the target ingredients. Reduce solvent consumption through the reflux module, reduce organic solvent emissions and production costs.
Smart Images

Figure CN120169010A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of traditional Chinese medicine processing, and particularly to an extraction and separation device and method for the components of traditional Chinese medicine. Background Art
[0002] The chemical components of traditional Chinese medicine are very complex, containing both multiple effective components, ineffective components, and toxic components. Extracting its effective components and further separating and purifying them to obtain effective monomers is an important part of the field of traditional Chinese medicine research. Traditional Chinese medicine extraction is to use some technologies to extract the effective components therein to the greatest extent, improve the internal quality and clinical treatment effect of traditional Chinese medicine preparations, and maximize the effect of traditional Chinese medicine.
[0003] In the prior art, in the traditional percolation method, since the medicinal materials are not pretreated, it is difficult for the solvent to fully contact the effective components during the penetration process, resulting in low extraction efficiency. Moreover, the solvent flows unidirectionally, and only part of the solvent may dissolve the effective components after passing through, easily causing solvent waste, resulting in excessive consumption of the solvent amount, increasing production costs, and the discharge of a large amount of organic solvents is likely to cause environmental pollution problems. Summary of the Invention
[0004] The present invention discloses an extraction and separation device and method for the components of traditional Chinese medicine, aiming to solve the technical problems in the background art that if the traditional Chinese medicine is not pretreated, it is difficult for the solvent to fully contact the effective components during the penetration process, and the solvent flows unidirectionally, and only part of the solvent may dissolve the effective components after passing through, both of which will lead to excessive consumption of the solvent amount.
[0005] An extraction and separation device for the components of traditional Chinese medicine proposed by the present invention includes an upper cylinder body. A pretreatment module is arranged at the top of the upper cylinder body. The pretreatment module includes a pretreatment bin, the pretreatment bin is fixedly connected to the top of the upper cylinder body, a rotating ring frame is movably connected to the inner wall of the pretreatment bin, and a movable door is movably connected to the top of the pretreatment bin. A handle is fixedly connected to the top of the movable door. The bottom of the upper cylinder body is fixedly connected to a lower cylinder body, and a reflux module is arranged on the lower cylinder body. The reflux module includes a shunt bin, and the shunt bin is fixedly connected to the bottom of the lower cylinder body. A valve one and a valve two are fixedly connected to the bottom of the shunt bin, and the output end of the valve one is fixedly connected to a liquid outlet pipe.
[0006] In a preferred solution, a first toothed ring is fixedly connected to the inner wall of the rotating ring frame, and a driving motor is fixedly connected to the top of the pretreatment bin. The output end of the driving motor is fixedly connected to a first gear, and the first gear meshes with the first toothed ring. An activity hole is formed in the rotating ring frame, a rotating rod is movably connected in the activity hole, and a turning member is fixedly connected to the outside of the rotating rod.
[0007] In a preferred embodiment, a second toothed ring is fixedly connected to the inner wall of the pretreatment bin, and one end of the rotating rod is fixedly connected to a second gear, and the second gear meshes with the second toothed ring.
[0008] In a preferred embodiment, an annular groove is formed at the bottom of the pretreatment bin, a rotating door is movably connected in the annular groove, a plurality of filter holes are circumferentially and equidistantly formed in the rotating door, and a general-purpose motor is fixedly connected to the bottom of the pretreatment bin, and the driving end of the general-purpose motor is fixedly connected to the top of the rotating door.
[0009] In a preferred embodiment, a plurality of fixing members are fixedly connected to the inner wall of the upper cylinder body at equal intervals in the circumferential direction, and the same annular pipe is fixedly connected to the plurality of fixing members. A plurality of liquid outlet holes are circumferentially and equidistantly formed in the annular pipe, and a fixing hole is formed in the upper cylinder body, and a liquid inlet pipe is fixedly connected in the fixing hole, and one end of the liquid inlet pipe is fixedly connected to the annular pipe.
[0010] In a preferred embodiment, a sliding groove is formed in the lower cylinder body, and a sliding frame is slidably connected in the sliding groove, and a placement filter plate is fixedly connected to the inner wall of the sliding frame.
[0011] In a preferred embodiment, a delivery pump is fixedly connected to the bottom of the shunt bin, the input end of the delivery pump is fixedly connected to the second valve, and the output end of the delivery pump is fixedly connected to a delivery pipe.
[0012] In a preferred embodiment, a round hole is formed in the top of the pretreatment bin, a fixing pipe is fixedly connected in the round hole, a shunt pipe is fixedly connected to the bottom of the fixing pipe, and one end of the delivery pipe away from the delivery pump is fixedly connected to the top of the shunt pipe.
[0013] In a preferred embodiment, a filtering cylinder member is fixedly connected to the inner wall of the bottom of the lower cylinder body, and a servo motor is fixedly connected to the inner wall of the top of the filtering cylinder member. The output end of the servo motor is fixedly connected to a rotating frame, and a plurality of mounting holes are circumferentially and equidistantly formed in the rotating frame, and a plurality of scraping members are fixedly connected in the plurality of mounting holes.
[0014] A method for extracting and separating Chinese herbal medicine components, using a Chinese herbal medicine component extraction and separation device as described above, includes the following steps: Step 1: Pull the handle to open the movable door, add Chinese herbal medicine materials and an appropriate amount of solvent into the pretreatment bin, start the driving motor to rotate the first gear, drive the rotating ring frame to rotate through the engagement of the first toothed ring, drive the rotating rod to perform a circular motion. Since the second gear and the second toothed ring mesh with each other, the rotating rod drives the turning member to rotate, turning the Chinese herbal medicine materials, enabling the materials to uniformly absorb a certain amount of solvent, facilitating the dissolution of active ingredients in the subsequent percolation process, appropriately reducing the required amount of solvent while also improving the extraction efficiency; Step 2: After the pretreatment is completed, start the general motor to rotate the revolving door, and the material drops and accumulates on the placed filter plate. Then, send the solvent into the annular pipe through the liquid inlet pipe, and then it flows out evenly to percolate the traditional Chinese medicine material. The dissolved solvent drops through the placed filter plate, enters the shunt bin after being filtered by the filter cylinder part. Start the servo motor to rotate the rotating frame, and clean the outside of the filter cylinder part through the scraping part to prevent the medicinal residues from blocking the filter cylinder part and affecting the outflow efficiency. Step 3: Close the revolving door, add the next batch of traditional Chinese medicine materials into the pretreatment bin, close valve 1, open valve 2, and at the same time start the delivery pump. The solvent containing some active ingredients after filtering out impurities is pumped into the fixed pipe through the delivery pipe, drops through the shunt pipe, and uses the refluxed solvent to pretreat the traditional Chinese medicine materials in the pretreatment bin. The completed solvent flows down through the filter holes on the revolving door for cyclic percolation, which can reduce the overall consumption of the solvent while ensuring the extraction effect.
[0015] As can be seen from the above, a traditional Chinese medicine component extraction and separation device provided by the present invention can increase the contact area and penetration uniformity between the solvent and the active ingredients of the medicine through the pretreatment module, reduce the solvent penetration resistance, shorten the extraction time and improve the dissolution rate of the target components; through the reflux module, the refluxed solvent is reused for the pretreatment and infiltration of the medicine and participates in the percolation cycle again, which can reduce the solvent consumption, reduce the organic solvent emissions and production costs. Description of the Drawings
[0016] Figure 1 It is a schematic diagram of the overall structure of a traditional Chinese medicine component extraction and separation device proposed by the present invention; Figure 2 It is a schematic diagram of the internal structure of a traditional Chinese medicine component extraction and separation device proposed by the present invention; Figure 3 It is a schematic diagram of the internal structure of the pretreatment bin of a traditional Chinese medicine component extraction and separation device proposed by the present invention; Figure 4 It is a schematic diagram of the structure of the pretreatment module of a traditional Chinese medicine component extraction and separation device proposed by the present invention; Figure 5 It is a schematic diagram of the structure at the rotating ring frame of the pretreatment module of a traditional Chinese medicine component extraction and separation device proposed by the present invention; Figure 6 It is a schematic diagram of the internal structure of the lower cylinder of a traditional Chinese medicine component extraction and separation device proposed by the present invention; Figure 7 It is a schematic diagram of the structure at the filter cylinder part of the reflux module of a traditional Chinese medicine component extraction and separation device proposed by the present invention.
[0017] In the figure: 1. Upper cylinder body; 2. Pretreatment module; 201. Pretreatment bin; 202. Rotating ring frame; 203. Driving motor; 204. Gear 1; 205. Tooth ring 1; 206. Tooth ring 2; 207. Rotating rod; 208. Turning part; 209. Gear 2; 210. General motor; 211. Rotary door; 3. Return flow module; 301. Shunt bin; 302. Valve 1; 303. Valve 2; 304. Delivery pump; 305. Delivery pipe; 306. Fixed pipe; 307. Shunt pipe; 308. Filter cartridge part; 309. Servo motor; 310. Rotary frame; 311. Scraper part; 4. Lower cylinder body; 5. Movable door; 6. Handle; 7. Liquid inlet pipe; 8. Liquid outlet pipe; 9. Sliding frame; 10. Placing filter plate; 11. Fixing part; 12. Annular pipe. Specific embodiments
[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.
[0019] A traditional Chinese medicine ingredient extraction and separation device disclosed in the present invention is mainly applied to scenarios where, if the traditional Chinese medicine is not pretreated, it is difficult for the solvent to fully contact the active ingredients during the penetration process, and the solvent flows in a single direction. After passing through, only part of the solvent may dissolve the active ingredients, both of which will lead to excessive consumption of the solvent volume.
[0020] Referring to Figures 1-7 , a traditional Chinese medicine ingredient extraction and separation device includes an upper cylinder body 1. A pretreatment module 2 is provided at the top of the upper cylinder body 1. The pretreatment module 2 includes a pretreatment bin 201. The pretreatment bin 201 is fixedly connected to the top of the upper cylinder body 1. The inner wall of the pretreatment bin 201 is movably connected with a rotating ring frame 202. And a movable door 5 is movably connected to the top of the pretreatment bin 201. A handle 6 is fixedly connected to the top of the movable door 5. The bottom of the upper cylinder body 1 is fixedly connected with a lower cylinder body 4. A return flow module 3 is provided on the lower cylinder body 4. The return flow module 3 includes a shunt bin 301. And the shunt bin 301 is fixedly connected to the bottom of the lower cylinder body 4. A valve 1 302 and a valve 2 303 are fixedly connected to the bottom of the shunt bin 301. The output end of the valve 1 302 is fixedly connected with a liquid outlet pipe 8.
[0021] Referring to Figure 1 , Figure 4 and Figure 5 , a tooth ring 1 205 is fixedly connected to the inner wall of the rotating ring frame 202. And a driving motor 203 is fixedly connected to the top of the pretreatment bin 201. The output end of the driving motor 203 is fixedly connected with a gear 1 204. The gear 1 204 meshes with the tooth ring 1 205. An activity hole is opened on the rotating ring frame 202. A rotating rod 207 is movably connected in the activity hole. A turning part 208 is fixedly connected to the outside of the rotating rod 207.
[0022] Refer to Figure 1 、 Figure 4 and Figure 5 On the inner wall of the pretreatment bin 201, a second toothed ring 206 is fixedly connected, and at one end of the rotating rod 207, a second gear 209 is fixedly connected. The second gear 209 meshes with the second toothed ring 206.
[0023] Refer to Figure 1 、 Figure 3 and Figure 4 At the bottom of the pretreatment bin 201, an annular groove is provided. A rotating door 211 is movably connected in the annular groove. A plurality of filter holes are equidistantly arranged on the circumference of the rotating door 211. At the bottom of the pretreatment bin 201, a general-purpose motor 210 is fixedly connected. The driving end of the general-purpose motor 210 is fixedly connected to the top of the rotating door 211.
[0024] In a specific application scenario, through the pretreatment module 2, the driving motor 203 rotates the first gear 204, and through the meshing of the first toothed ring 205, the rotating ring frame 202 is rotated, driving the rotating rod 207 to perform a circular motion. Since the second gear 209 and the second toothed ring 206 mesh with each other, the rotating rod 207 drives the turning member 208 to rotate, turning the traditional Chinese medicine materials, enabling the materials to uniformly absorb a certain amount of solvent, facilitating the dissolution of active ingredients during the subsequent percolation process, appropriately reducing the required amount of solvent while also improving the extraction efficiency.
[0025] Refer to Figure 1 、 Figure 2 and Figure 6 On the inner wall of the upper cylinder 1, a plurality of fixing members 11 are fixedly connected at equal intervals in the circumferential direction. The same annular pipe 12 is fixedly connected to the plurality of fixing members 11. A plurality of liquid outlet holes are equidistantly arranged on the circumference of the annular pipe 12. A fixing hole is provided on the upper cylinder 1, and a liquid inlet pipe 7 is fixedly connected in the fixing hole. One end of the liquid inlet pipe 7 is fixedly connected to the annular pipe 12.
[0026] Refer to Figure 1 、 Figure 2 and Figure 6 On the lower cylinder 4, a sliding groove is provided, and a sliding frame 9 is slidably connected in the sliding groove. A placement filter plate 10 is fixedly connected to the inner wall of the sliding frame 9.
[0027] Refer to Figure 1 and Figure 2 At the bottom of the shunt bin 301, a delivery pump 304 is fixedly connected. The input end of the delivery pump 304 is fixedly connected to the second valve 303, and the output end of the delivery pump 304 is fixedly connected to a delivery pipe 305.
[0028] Refer to Figure 1 、 Figure 2 and Figure 4, a circular hole is provided at the top of the pretreatment bin 201. A fixed pipe 306 is fixedly connected inside the circular hole. The bottom of the fixed pipe 306 is fixedly connected with a shunt pipe 307. And one end of the conveying pipe 305 away from the conveying pump 304 is fixedly connected to the top of the shunt pipe 307.
[0029] Refer to Figure 1 , Figure 6 and Figure 7 , a filter cylinder part 308 is fixedly connected to the bottom inner wall of the lower cylinder body 4. And a servo motor 309 is fixedly connected to the top inner wall of the filter cylinder part 308. The output end of the servo motor 309 is fixedly connected with a rotating frame 310. A plurality of mounting holes are circumferentially and equidistantly formed on the rotating frame 310. A scraping plate part 311 is fixedly connected in each of the plurality of mounting holes.
[0030] In a specific application scenario, through the reflux module 3, the dissolved solvent enters the shunt bin 301 after being filtered by the filter cylinder part 308. The servo motor 309 rotates the rotating frame 310. The outer part of the filter cylinder part 308 is cleaned by the scraping plate part 311, which can prevent the medicinal residues from blocking the filter cylinder part 308 and affecting the outflow efficiency. The solvent containing some active ingredients after filtering out impurities is pumped into the fixed pipe 306 through the conveying pipe 305 and falls through the shunt pipe 307. The refluxed solvent is used to pretreat the traditional Chinese medicine materials in the pretreatment bin 201. The completed solvent flows down through the filter holes on the rotating door 211 for cyclic percolation, which can reduce the overall usage amount of the solvent while ensuring the extraction effect.
[0031] A method for extracting and separating components of traditional Chinese medicine, using a device for extracting and separating components of traditional Chinese medicine as described above, includes the following steps: Step 1: Pull the handle 6 to open the movable door 5, add the traditional Chinese medicine materials and an appropriate amount of solvent corresponding thereto into the pretreatment bin 201. Start the driving motor 203 to rotate the first gear 204. Through the meshing rotation of the first gear ring 205, the rotating ring frame 202 is driven to rotate, driving the rotating rod 207 to perform a circular motion. Since the second gear 209 and the second gear ring 206 are meshed with each other, the rotating rod 207 drives the turning part 208 to rotate, turning the traditional Chinese medicine materials, enabling the materials to uniformly absorb a certain amount of solvent, which is beneficial to the dissolution of active ingredients during the subsequent percolation process, appropriately reducing the required amount of solvent while also improving the extraction efficiency; Step 2: After the pretreatment is completed, start the general motor 210 to rotate the rotating door 211. The materials fall and accumulate on the placement filter plate 10. The solvent is sent into the annular pipe 12 through the liquid inlet pipe 7 and then uniformly flows out to percolate the traditional Chinese medicine materials. The dissolved solvent falls through the placement filter plate 10, enters the shunt bin 301 after being filtered by the filter cylinder part 308. Start the servo motor 309 to rotate the rotating frame 310, and clean the outer part of the filter cylinder part 308 through the scraping plate part 311 to prevent the medicinal residues from blocking the filter cylinder part 308 and affecting the outflow efficiency; Step 3: Close the revolving door 211, add the next batch of traditional Chinese medicine materials into the pretreatment bin 201, close the first valve 302, open the second valve 303, and at the same time start the transfer pump 304. The solvent containing some active ingredients after filtering out impurities is pumped into the fixed pipe 306 through the transfer pipe 305, falls through the shunt pipe 307, and the traditional Chinese medicine materials in the pretreatment bin 201 are pretreated with the refluxing solvent. After completion, the solvent flows down through the filter holes on the revolving door 211 for cyclic percolation, which can reduce the overall usage amount of the solvent while ensuring the extraction effect.
[0032] As mentioned above, only the preferred specific embodiments of the present invention are described, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.
Claims
1. An extraction and separation device for traditional Chinese medicine ingredients, including an upper cylinder body (1), characterized in that, A pretreatment module (2) is provided at the top of the upper cylinder body (1). The pretreatment module (2) includes a pretreatment bin (201), and the pretreatment bin (201) is fixedly connected to the top of the upper cylinder body (1). A rotating ring frame (202) is movably connected to the inner wall of the pretreatment bin (201). An activity door (5) is movably connected to the top of the pretreatment bin (201), and a handle (6) is fixedly connected to the top of the activity door (5). The bottom of the upper cylinder body (1) is fixedly connected to a lower cylinder body (4). A reflux module (3) is provided on the lower cylinder body (4). The reflux module (3) includes a shunt bin (301), and the shunt bin (301) is fixedly connected to the bottom of the lower cylinder body (4). A valve one (302) and a valve two (303) are fixedly connected to the bottom of the shunt bin (301), and the output end of the valve one (302) is fixedly connected to a liquid outlet pipe (8).
2. The extraction and separation device for traditional Chinese medicine ingredients according to claim 1, characterized in that, A first toothed ring (205) is fixedly connected to the inner wall of the rotating ring frame (202). A driving motor (203) is fixedly connected to the top of the pretreatment bin (201). A first gear (204) is fixedly connected to the output end of the driving motor (203). The first gear (204) meshes with the first toothed ring (205). An activity hole is provided on the rotating ring frame (202), and a rotating rod (207) is movably connected in the activity hole. A turning member (208) is fixedly connected to the outside of the rotating rod (207).
3. The extraction and separation device for traditional Chinese medicine ingredients according to claim 2, characterized in that, A second toothed ring (206) is fixedly connected to the inner wall of the pretreatment bin (201). A second gear (209) is fixedly connected to one end of the rotating rod (207). The second gear (209) meshes with the second toothed ring (206).
4. The extraction and separation device for traditional Chinese medicine ingredients according to claim 3, characterized in that, An annular groove is provided at the bottom of the pretreatment bin (201), and a rotating door (211) is movably connected in the annular groove. A plurality of filter holes are circumferentially and equidistantly provided on the rotating door (211). A general motor (210) is fixedly connected to the bottom of the pretreatment bin (201), and the driving end of the general motor (210) is fixedly connected to the top of the rotating door (211).
5. The extraction and separation device for traditional Chinese medicine ingredients according to claim 4, characterized in that, A plurality of fixing members (11) are fixedly connected to the inner wall of the upper cylinder body (1) at circumferential equal intervals. The same annular pipe (12) is fixedly connected to the plurality of fixing members (11). A plurality of liquid outlet holes are circumferentially and equidistantly provided on the annular pipe (12). A fixing hole is provided on the upper cylinder body (1), and a liquid inlet pipe (7) is fixedly connected in the fixing hole. One end of the liquid inlet pipe (7) is fixedly connected to the annular pipe (12).
6. The extraction and separation device for traditional Chinese medicine ingredients according to claim 5, characterized in that, A sliding groove is provided on the lower cylinder body (4), and a sliding frame (9) is slidably connected in the sliding groove. A placing filter plate (10) is fixedly connected to the inner wall of the sliding frame (9).
7. The extraction and separation device for traditional Chinese medicine ingredients according to claim 6, characterized in that, A delivery pump (304) is fixedly connected to the bottom of the shunt bin (301). The input end of the delivery pump (304) is fixedly connected to the valve two (303), and the output end of the delivery pump (304) is fixedly connected to a delivery pipe (305).
8. The extraction and separation device for traditional Chinese medicine ingredients according to claim 7, characterized in that, A circular hole is formed in the top of the pretreatment bin (201), a fixed pipe (306) is fixedly connected in the circular hole, a flow dividing pipe (307) is fixedly connected to the bottom of the fixed pipe (306), and one end of the conveying pipe (305) far from the conveying pump (304) is fixedly connected to the top of the flow dividing pipe (307).
9. The extraction and separation device for traditional Chinese medicine ingredients according to claim 8, characterized in that, A filter cylinder part (308) is fixedly connected to the bottom inner wall of the lower cylinder body (4), a servo motor (309) is fixedly connected to the top inner wall of the filter cylinder part (308), an output end of the servo motor (309) is fixedly connected to a rotating frame (310), a plurality of mounting holes are formed in the rotating frame (310) at equal circumferential intervals, and a scraping plate part (311) is fixedly connected in each of the plurality of mounting holes.
10. A method for extracting and separating traditional Chinese medicine ingredients, using the extraction and separation device for traditional Chinese medicine ingredients according to claim 9, characterized in that, It includes the following steps: Step 1: Open the movable door (5), add traditional Chinese medicine materials and an appropriate amount of solvent into the pretreatment bin (201), start the driving motor (203) to meshingly rotate the rotating ring frame (202), drive the rotating rod (207) to perform a circular motion. Since the second gear (209) and the second toothed ring (206) are meshed with each other, the rotating rod (207) drives the turning part (208) to rotate, turn the traditional Chinese medicine materials, and enable the materials to uniformly absorb a certain amount of solvent. Step 2: After the pretreatment is completed, the general motor (210) rotates the rotating door (211), the materials fall and accumulate on the placing filter plate (10), send the solvent into the annular pipe (12) through the liquid inlet pipe (7), and then uniformly flow out to perform percolation on the traditional Chinese medicine materials. The dissolved solvent falls through the placing filter plate (10), enters the flow dividing bin (301) after being filtered by the filter cylinder part (308), start the servo motor (309) to rotate the rotating frame (310), and clean the outside of the filter cylinder part (308) through the scraping plate part (311) to prevent the filter cylinder part (308) from being blocked by medicinal residues. Step 3: Close the rotating door (211), add the next batch of traditional Chinese medicine materials into the pretreatment bin (201), close the first valve (302), open the second valve (303), and at the same time start the conveying pump (304). The solvent containing some effective components after removing impurities is pumped into the fixed pipe (306) through the conveying pipe (305), falls through the flow dividing pipe (307), and pre-treats the traditional Chinese medicine materials in the pretreatment bin (201) by using the refluxed solvent. The completed solvent flows down through the filter holes on the rotating door (211) for cyclic percolation.