A traditional Chinese medicine material extraction device based on multi-stage gradient extraction

Abstract

This invention discloses a traditional Chinese medicine extraction device based on multi-stage gradient extraction, comprising: a supporting base plate, an extraction chamber fixedly connected to the top of the supporting base plate, and a stirring shaft rotatably connected to the middle of the extraction chamber; a pretreatment component, assembled on the top of the outer side of the supporting base plate, and a transmission component assembled on the top of the extraction chamber, the transmission component having a displacement plate, which provides the power required for the operation of the pretreatment component when adjusted towards the pretreatment component, and provides the power required for the rotation of the stirring shaft when adjusted towards the stirring shaft; and a solution supply component, assembled on the top of the supporting base plate. This invention relates to the field of traditional Chinese medicine extraction technology. Through the cooperation of the solution supply component, this invention enables the selective dissolution of components with different polarity ranges in their respective optimal solvent environments during the extraction of traditional Chinese medicine by controlling the switching of multiple solutions, effectively ensuring the extraction rate of the traditional Chinese medicine.

Description

Technical Field

[0001] This invention relates to the field of Chinese herbal medicine extraction technology, specifically a Chinese herbal medicine extraction device based on multi-stage gradient extraction. Background Technology

[0002] Chinese medicinal materials refer to medicinal materials derived from natural resources such as plants, animals, and minerals, which are used in clinical practice or health care in traditional Chinese medicine after preliminary processing. Their chemical composition is extremely complex, usually containing a variety of active ingredients such as alkaloids, flavonoids, saponins, polysaccharides, and volatile oils, as well as a large amount of ineffective or even harmful impurities such as cellulose, starch, and inorganic salts.

[0003] Therefore, during the processing stage, it is necessary to use an extraction device to efficiently and selectively dissolve and enrich these trace active ingredients dispersed in the medicinal matrix, while removing impurities. The fundamental purpose is to retain and concentrate the therapeutic material basis of the medicinal material to the maximum extent, and improve the purity of the product and the safety of medication.

[0004] However, traditional extraction devices are mostly single-stage extraction devices. Since the components of Chinese medicinal materials are extremely complex, the same medicinal material often contains volatile oils, alkaloids, saponins and other effective components with huge differences. Traditional single-solvent extraction is prone to insufficient dissolution of some components due to the mismatch of solvent polarity.

[0005] To address these issues, the present invention provides a traditional Chinese medicine extraction device based on multi-stage gradient extraction. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a Chinese herbal medicine extraction device based on multi-stage gradient extraction, which solves the aforementioned problems.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a traditional Chinese medicine extraction device based on multi-stage gradient extraction, comprising:

[0008] A supporting base plate is provided, with an extraction box fixedly connected to its top end and a stirring shaft rotatably connected to its middle portion.

[0009] A pretreatment assembly is mounted on the top of the outer side of the support base plate. A transmission assembly is mounted on the top of the extraction tank. The transmission assembly has a displacement plate that provides the power required for the operation of the pretreatment assembly when the displacement plate is adjusted toward the pretreatment assembly, and provides the power required for the rotation of the stirring shaft when the displacement plate is adjusted toward the stirring shaft.

[0010] A solution supply assembly is mounted on the top of a support base plate and is used to deliver the extraction solution into the extraction tank.

[0011] Preferably, the preprocessing component includes:

[0012] A pretreatment box is fixedly connected to the top of the outside of the support base plate. A screen plate is fixedly connected inside the pretreatment box. A crushing shaft is rotatably connected inside the pretreatment box and above the screen plate. Multiple cutters are fixedly connected to the outside of the crushing shaft. A bevel gear A is fixedly connected to one end of the crushing shaft.

[0013] An extension plate is fixedly connected to one side of the top of the pretreatment box. Both ends of the extension plate are vertically slidably connected to extension plates. A sealing plate is fixedly connected between the bottoms of the two extension plates. An avoidance opening is provided on the pretreatment box, and the sealing plate also slides through the avoidance opening inside the pretreatment box. A guide plate is rotatably connected to the top of one side of the sealing plate.

[0014] Preferably, the transmission assembly includes:

[0015] A transmission plate is fixedly connected to the top of the extraction tank. A displacement plate is slidably connected to one side of the transmission plate. An adjustment plate is fixedly connected to the middle of one end of the displacement plate. A cylinder is fixedly connected to one end of the transmission plate, and the output end of the cylinder is also fixedly connected to the adjustment plate.

[0016] A drive shaft is rotatably connected to a displacement plate. Bevel gears B and C are fixedly connected to both ends of the drive shaft, respectively. Bevel gear D is fixedly connected to the top of the stirring shaft, and bevel gear C meshes with bevel gear D. Bevel gear B meshes with bevel gear A.

[0017] A drive motor is fixedly connected to one side of the displacement plate. A spur gear A is fixedly connected to the output end of the drive motor. A spur gear B is fixedly connected to the outer side of the drive shaft, and the spur gear B meshes with the spur gear A.

[0018] The loading frame is fixedly connected to the bottom of the displacement plate, and the end of the guide plate away from the sealing plate is also rotatably connected to the loading frame.

[0019] Preferably, the solution supply assembly includes:

[0020] The bracket is fixedly connected to the top of the supporting base plate. Multiple solution tanks are fixedly connected to the outer side of the bracket. A column is fixedly connected to the middle of the bracket. A drainage box is fixedly connected to the top of the column.

[0021] Multiple drainage tubes are evenly and fixedly connected to the outside of the drainage box. One of the drainage tubes is used for cleaning, and the other drainage tubes extend into the interior of the corresponding solution tank.

[0022] The stand is fixedly connected to the top of the support base plate. A diversion pump is fixedly connected to one side of the stand. A supply pipe is fixedly connected to the output end of the diversion pump. An application pipe is fixedly connected to the top of the extraction tank. The end of the supply pipe away from the diversion pump is also connected to the application pipe.

[0023] A switching component is disposed inside the drainage box and is used to open one of the drainage tubes and block the other drainage tubes to achieve the supply of the corresponding solution.

[0024] Preferably, the switching component includes:

[0025] A transmission tube is rotatably connected to the top of the drainage box. An adjustment plate is fixedly connected to one end of the transmission tube inside the drainage box. A flow channel is opened on the adjustment plate. A liquid delivery tube is rotatably connected to the top of the transmission tube. The end of the liquid delivery tube away from the transmission tube is also fixedly connected to the input end of the drainage pump.

[0026] A drive motor is fixedly connected to the top of the diversion box. A spur gear C is fixedly connected to the output end of the drive motor. A spur gear D is fixedly connected to the outside of the transmission pipe, and the spur gear D is also meshed with the spur gear C.

[0027] Preferably, the top of the pretreatment box is funnel-shaped, and the bottom of the pretreatment box is inclined towards the supporting base plate.

[0028] Preferably, a linear guide rail is fixedly connected to one side of the transmission plate, and a linear slider is fixedly connected to one end of the displacement plate near the linear guide rail, and the linear slider is also slidably connected to the linear guide rail.

[0029] Preferably, an observation window is provided on the outside of the solution tank, and a transparent observation plate is fixedly connected inside the observation window.

[0030] Preferably, the bottom of the application tube is fixedly connected to a plurality of diversion tubes, and each of the diversion tubes extends into the interior of the extraction chamber.

[0031] Preferably, a sealing groove is provided on the outer side of the adjusting disc, and a sealing strip is fixedly connected inside the sealing groove.

[0032] Beneficial effects

[0033] This invention provides a traditional Chinese medicine extraction device based on multi-stage gradient extraction. Compared with existing technologies, it has the following advantages:

[0034] This multi-level gradient extraction device for Chinese medicinal materials, through the cooperation of the solution supply component, enables the selective and full dissolution of components in different polarity ranges in their respective optimal solvent environments by controlling the switching of multiple solutions during the extraction process, thus effectively ensuring the extraction rate of Chinese medicinal materials.

[0035] This multi-level gradient extraction device for Chinese medicinal materials, through the structural coordination of pretreatment components, can achieve fine processing of large-sized Chinese medicinal materials before extraction, ensuring the subsequent extraction effect.

[0036] This Chinese herbal medicine extraction device based on multi-stage gradient extraction, through the structural coordination of the transmission components, can provide the power required by the stirring shaft or pretreatment components by means of the controllable displacement of the displacement plate, which greatly improves the overall linkage. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0038] Figure 2 This is a schematic diagram of the internal structure of the extraction chamber of the present invention;

[0039] Figure 3 This is a schematic diagram of the pretreatment component of the present invention;

[0040] Figure 4 This is a schematic diagram of the transmission component of the present invention;

[0041] Figure 5 This is a schematic diagram of the connection structure between bevel gear C and bevel gear D of the present invention;

[0042] Figure 6 This is a schematic diagram of the solution supply component of the present invention;

[0043] Figure 7 This is a schematic diagram of the switching component of the present invention;

[0044] Figure 8 This is the present invention. Figure 7 A magnified view of a portion of point A in the middle.

[0045] In the diagram: 1. Support base plate; 2. Extraction tank; 3. Stirring shaft; 4. Pretreatment assembly; 5. Transmission assembly; 6. Solution supply assembly; 7. Pretreatment tank; 8. Sieve plate; 9. Particle crushing shaft; 10. Cutter; 11. Bevel gear A; 12. Clearance opening; 13. Extension plate; 14. Displacement rod; 15. Sealing plate; 16. Guide plate; 17. Transmission plate; 18. Displacement plate; 19. Adjusting plate; 20. Cylinder; 21. Transmission shaft; 22. Bevel gear B; 23. Bevel gear C; 24. Bevel gear D; 25. Drive motor; 26. Spur gear A; 27. Spur gear B; 28. Loading frame; 29. ​​Bracket; 30. Solution tank; 31. Column; 32. Drainage box; 33. Drainage pipe; 34. Stand; 35. Drainage pump; 36. Supply pipe; 37. Application pipe; 38. Transfer pipe; 39. Adjustment disc; 40. Flow channel; 41. Drive motor; 42. Spur gear C; 43. Spur gear D; 44. Liquid delivery pipe. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] Example 1:

[0048] Please see Figure 1-8 A traditional Chinese medicine extraction device based on multi-level gradient extraction, comprising:

[0049] A supporting base plate 1 is provided, and an extraction box 2 is fixedly connected to the top of the supporting base plate 1. A stirring shaft 3 is rotatably connected to the middle of the extraction box 2.

[0050] Please refer to Figure 2 In this embodiment, a retrieval port is provided at the bottom of the outer side of the support base plate 1, and the retrieval port is blocked by a baffle so that the extracted Chinese medicinal materials can be taken out from the inside of the extraction box 2.

[0051] Please refer to Figure 2 In this embodiment, an extract outlet pipe is provided at the bottom of the outer side of the support base plate 1, and a valve is provided on the extract outlet pipe.

[0052] The pretreatment component 4 is mounted on the top of the outer side of the support base plate 1. The top of the extraction box 2 is equipped with a transmission component 5, which has a displacement plate 18. When the displacement plate 18 is adjusted toward the pretreatment component 4, it provides the power required for the operation of the pretreatment component 4. When the displacement plate 18 is adjusted toward the stirring shaft 3, it provides the power required for the rotation of the stirring shaft 3.

[0053] Solution supply assembly 6 is mounted on the top of the support base plate 1 and is used to deliver the solution required for extraction into the extraction tank 2.

[0054] Please refer to Figure 3 In this embodiment, the preprocessing component 4 includes:

[0055] The pretreatment box 7 is fixedly connected to the top of the outside of the support base plate 1. The screen plate 8 is fixedly connected inside the pretreatment box 7. The crushing shaft 9 is rotatably connected inside the pretreatment box 7 and above the screen plate 8. Multiple cutters 10 are fixedly connected to the outside of the crushing shaft 9. A bevel gear A11 is fixedly connected to one end of the crushing shaft 9.

[0056] Please refer to Figure 3 In this embodiment, the top of the pretreatment box 7 is funnel-shaped, and the bottom of the pretreatment box 7 is inclined towards the support base plate 1. Through the structural characteristics of the top of the pretreatment box 7, when the Chinese medicinal materials enter the pretreatment box 7, the Chinese medicinal materials can be concentrated and sent to the cutter 10 for fine processing by means of the top structure of the pretreatment box 7. And by utilizing the structural characteristics of the bottom of the pretreatment box 7, the fined Chinese medicinal materials can be sent into the extraction box 2, avoiding the accumulation of Chinese medicinal materials inside the pretreatment box 7.

[0057] An extension plate 13 is fixedly connected to one side of the top of the pretreatment box 7. Both ends of the extension plate 13 are vertically slidably connected to the extension plate 13. A sealing plate 15 is fixedly connected between the bottoms of the two extension plates 13. An avoidance opening 12 is provided on the pretreatment box 7, and the sealing plate 15 also slides through the avoidance opening 12 inside the pretreatment box 7. A guide plate 16 is rotatably connected to the top of one side of the sealing plate 15.

[0058] Please refer to Figure 4 In this embodiment, the transmission assembly 5 includes:

[0059] Transmission plate 17 is fixedly connected to the top of extraction box 2. Displacement plate 18 is slidably connected to one side of transmission plate 17. Adjustment plate 19 is fixedly connected to the middle of one end of displacement plate 18. Cylinder 20 is fixedly connected to one end of transmission plate 17, and the output end of cylinder 20 is also fixedly connected to adjustment plate 19.

[0060] Please refer to Figure 4 In this embodiment, a linear guide rail is fixedly connected to one side of the transmission plate 17, and a linear slider is fixedly connected to one end of the displacement plate 18 near the linear guide rail. The linear slider is also slidably connected to the linear guide rail. Through the arrangement of the linear slider and the linear guide rail, a stable guide can be provided for the displacement of the displacement plate 18, avoiding uncontrollable displacement of the displacement plate 18 and ensuring that the bevel gear C23 and bevel gear D24 and bevel gear B22 and bevel gear A11 can mesh accurately.

[0061] The transmission shaft 21 is rotatably connected to the displacement plate 18. The two ends of the transmission shaft 21 are respectively fixedly connected to bevel gear B22 and bevel gear C23. The top of the stirring shaft 3 is fixedly connected to bevel gear D24, and bevel gear C23 is meshed with bevel gear D24. Bevel gear B22 is meshed with bevel gear A11.

[0062] The drive motor 25 is fixedly connected to one side of the displacement plate 18. The output end of the drive motor 25 is fixedly connected to a spur gear A26. The outer side of the drive shaft 21 is fixedly connected to a spur gear B27, and the spur gear B27 meshes with the spur gear A26.

[0063] The loading frame 28 is fixedly connected to the bottom of the displacement plate 18, and the end of the guide plate 16 away from the sealing plate 15 is also rotatably connected to the loading frame 28.

[0064] Please refer to Figure 6 In this embodiment, the solution supply component 6 includes:

[0065] The bracket 29 is fixedly connected to the top of the support base plate 1. Multiple solution tanks 30 are fixedly connected to the outer side of the bracket 29. A column 31 is fixedly connected to the middle of the bracket 29. A drainage box 32 is fixedly connected to the top of the column 31.

[0066] Please refer to Figure 6 In this embodiment, an observation window is provided on the outside of the solution tank 30, and a transparent observation plate is fixedly connected inside the observation window. The observation window is sealed by the transparent observation plate, so that personnel can see the remaining solution inside the solution tank 30 through the transparent observation plate to remind personnel to replenish it in time.

[0067] Please refer to Figure 6 In this embodiment, a replenishment tube is fixedly connected to the top of the solution tank 30, and a removable plug is provided at the open end of the replenishment tube. With the replenishment tube, solution can be conveniently added to the solution tank 30 when the solution inside the solution tank 30 is insufficient.

[0068] Multiple drainage tubes 33 are evenly and fixedly connected to the outside of the drainage box 32. One drainage tube 33 is used for cleaning water, and the other drainage tubes 33 extend into the interior of the corresponding solution tank 30.

[0069] The support frame 34 is fixedly connected to the top of the support base plate 1. A drainage pump 35 is fixedly connected to one side of the support frame 34. A supply pipe 36 is fixedly connected to the output end of the drainage pump 35. An application pipe 37 is fixedly connected to the top of the extraction box 2. The end of the supply pipe 36 away from the drainage pump 35 is also connected to the application pipe 37.

[0070] Please refer to Figure 6 In this embodiment, multiple diversion pipes are fixedly connected to the bottom of the application pipe 37, and each diversion pipe extends into the interior of the extraction box 2. Through the setting of the diversion pipes, when the solution or cleaning water enters the application pipe 37, it can flow to the diversion pipes, and finally spray the solution or cleaning water onto the Chinese medicinal materials inside the extraction box 2 from multiple positions through the diversion pipes.

[0071] A switching component is installed inside the drainage box 32 to open one of the drainage tubes 33 and block the others, thereby supplying the corresponding solution.

[0072] Example 2:

[0073] Please see Figure 2-8 This embodiment provides a technical solution based on Embodiment 1: the switching component includes:

[0074] The transmission pipe 38 is rotatably connected to the top of the drainage box 32. One end of the transmission pipe 38 located inside the drainage box 32 is fixedly connected to an adjusting plate 39. A flow channel 40 is opened on the adjusting plate 39. The top of the transmission pipe 38 is rotatably connected to a liquid delivery pipe 44. The end of the liquid delivery pipe 44 away from the transmission pipe 38 is also fixedly connected to the input end of the drainage pump 35.

[0075] The drive motor 41 is fixedly connected to the top of the diversion box 32. The output end of the drive motor 41 is fixedly connected to a spur gear C42. The outside of the transmission pipe 38 is fixedly connected to a spur gear D43, and the spur gear D43 is also meshed with the spur gear C42.

[0076] Please refer to Figure 7 In this embodiment, a sealing groove is provided on the outer side of the regulating plate 39, and a sealing strip is fixedly connected inside the sealing groove. The sealing strip is mounted on the sealing groove. After the regulating plate 39 rotates, the elastic deformation of the sealing strip can be used to seal the gap between the regulating plate 39 and the inner wall of the drainage box 32, so as to prevent the uncontrollable flow of the remaining solution.

[0077] Please refer to Figure 7 In this embodiment, the width of the flow channel 40 is slightly larger than the inner diameter of the drainage tube 33. By changing the size between the liquid delivery tube 44 and the drainage tube 33, when the liquid delivery tube 44 is adjusted to correspond with the drainage tube 33, the required solution will enter the interior of the flow channel 40 through the drainage tube 33 and be transported through the transmission tube 38 and the liquid delivery tube 44.

[0078] Furthermore, the transmission pipe 38 has a hollow structure. Through the structural characteristics of the transmission pipe 38, the transfer of solution or cleaning water can be realized without affecting the adjustment of the regulating plate 39.

[0079] Please refer to Figure 7 In this embodiment, a rotary joint is provided at the connection between the liquid delivery pipe 44 and the transmission pipe 38. By providing the rotary joint, the solution or cleaning water can be effectively transferred without affecting the rotation of the transmission pipe 38, thus avoiding interference between the transmission pipe 38 and the liquid delivery pipe 44.

[0080] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0081] Working principle: First, the cylinder 20 is activated to push the adjusting plate 19, which causes the displacement plate 18 to drive the transmission shaft 21 to adjust towards the pretreatment box 7 until the bevel gear B22 meshes with the bevel gear A11. Since the guide plate 16 is connected between the sealing plate 15 and the loading frame 28, as the loading frame 28 follows the adjustment of the displacement plate 18, the guide plate 16 can push the sealing plate 15, causing the sealing plate 15 to adjust upward under the limit of the displacement rod 14, thereby releasing the seal on the pretreatment box 7.

[0082] The Chinese medicinal materials to be extracted are then poured into the pretreatment box 7 and received by the sieve plate 8. The Chinese medicinal materials smaller than the aperture of the sieve plate 8 are directly sieved by the sieve plate 8 and enter the extraction box 2 along the pretreatment box 7. The Chinese medicinal materials larger than the aperture of the sieve plate 8 will be intercepted by the sieve plate 8. Subsequently, the drive motor 25 can be started to drive the spur gear A26 to rotate, which causes the spur gear A26 to move the spur gear B27, thereby driving the drive shaft 21 to rotate. With the help of the bevel gear B22, the bevel gear A11 is moved, which causes the crushing shaft 9 to drive the cutter 10 to rotate continuously, thus refining the Chinese medicinal materials intercepted by the sieve plate 8.

[0083] After the Chinese medicinal materials are refined, the starting cylinder 20 pulls the adjusting plate 19, causing the transmission shaft 21 to adjust towards the stirring shaft 3 until the bevel gear C23 meshes with the bevel gear D24. When the bevel gear C23 meshes with the bevel gear D24, the sealing plate 15 will move into the pretreatment box 7 under the action of the guide plate 16 to seal the pretreatment box 7. This prevents the Chinese medicinal materials from entering the pretreatment box 7 during subsequent extraction, and also prevents foreign matter from entering the extraction box 2 from the pretreatment box 7 during the extraction of the Chinese medicinal materials.

[0084] When the Chinese medicinal materials enter the extraction tank 2, the drive motor 41 is started to cause the spur gear C42 to move the spur gear D43, which in turn drives the regulating plate 39 to rotate through the transmission pipe 38 until the flow channel 40 is oriented towards the solution used in the first extraction stage of the Chinese medicinal materials. When the diversion pump 35 is started later, the solution of the first stage will be drawn out through the corresponding diversion pipe 33 and enter the transmission pipe 38 along the flow channel 40. Then, it will be transferred through the liquid delivery pipe 44 and the supply pipe 36, and finally applied to the Chinese medicinal materials through the application pipe 37.

[0085] During the extraction stage of Chinese medicinal materials, the drive motor 25 can be started, and under the transmission of spur gears A26 and B27, the bevel gear C23 will move the bevel gear D24, thereby driving the stirring shaft 3 to stir the Chinese medicinal materials. Finally, the Chinese medicinal materials are extracted by reacting with the solvent.

[0086] After the first stage of extraction, the extract from the first stage is extracted from the support base plate 1, and the flow channel 40 is adjusted to the guide pipe 33 that is compatible with the cleaning water by rotating the adjustment plate 39. Then, the cleaning water is sent into the interior of the extraction tank 2 by the operation of the guide pump 35. During the flow of the cleaning water, the flow channel 40, the transfer pipe 38, the liquid delivery pipe 44, the supply pipe 36, the application pipe 37 and the solvent on the Chinese medicinal materials can be removed to avoid mixing with the solution of the next stage.

[0087] After cleaning, the flow channel 40 is adjusted to the solution of the next stage, and the solution is sent into the extraction tank 2 by the flow pump 35. Finally, the above operation is repeated to achieve multi-gradient extraction of Chinese medicinal materials.

[0088] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0089] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A Chinese herbal medicine extraction device based on multi-stage gradient extraction, characterized in that: include: A supporting base plate (1) is fixedly connected to the top of the supporting base plate (1), and a stirring shaft (3) is rotatably connected to the middle of the extraction box (2). The pretreatment component (4) is mounted on the top of the outside of the support base plate (1). The top of the extraction box (2) is equipped with a transmission component (5). The transmission component (5) has a displacement plate (18). When the displacement plate (18) is adjusted toward the pretreatment component (4), it provides the power required for the operation of the pretreatment component (4). When the displacement plate (18) is adjusted toward the stirring shaft (3), it provides the power required for the rotation of the stirring shaft (3). Solution supply assembly (6) is mounted on the top of the support base plate (1) and is used to deliver the extraction solution into the extraction tank (2).

2. The herbal medicine extraction device based on multi-stage gradient extraction according to claim 1, characterized in that: The preprocessing component (4) includes: A pretreatment box (7) is fixedly connected to the top of the outside of the support base plate (1). A screen plate (8) is fixedly connected inside the pretreatment box (7). A crushing shaft (9) is rotatably connected inside the pretreatment box (7) and above the screen plate (8). Multiple cutters (10) are fixedly connected to the outside of the crushing shaft (9). A bevel gear A (11) is fixedly connected to one end of the crushing shaft (9). An extension plate (13) is fixedly connected to one side of the top of the pretreatment box (7). Both ends of the extension plate (13) are vertically slidably connected to an extension plate (13). A sealing plate (15) is fixedly connected between the bottoms of the two extension plates (13). An avoidance opening (12) is provided on the pretreatment box (7). The sealing plate (15) also slides through the avoidance opening (12) inside the pretreatment box (7). A guide plate (16) is rotatably connected to the top of one side of the sealing plate (15).

3. The herbal extraction device based on multi-stage gradient extraction according to claim 2, characterized in that: The transmission assembly (5) includes: A transmission plate (17) is fixedly connected to the top of the extraction box (2). A displacement plate (18) is slidably connected to one side of the transmission plate (17). An adjustment plate (19) is fixedly connected to the middle of one end of the displacement plate (18). A cylinder (20) is fixedly connected to one end of the transmission plate (17), and the output end of the cylinder (20) is also fixedly connected to the adjustment plate (19). The transmission shaft (21) is rotatably connected to the displacement plate (18). The two ends of the transmission shaft (21) are respectively fixedly connected to bevel gear B (22) and bevel gear C (23). The top of the stirring shaft (3) is fixedly connected to bevel gear D (24), and bevel gear C (23) meshes with bevel gear D (24). Bevel gear B (22) meshes with bevel gear A (11). A drive motor (25) is fixedly connected to one side of the displacement plate (18). A spur gear A (26) is fixedly connected to the output end of the drive motor (25). A spur gear B (27) is fixedly connected to the outside of the drive shaft (21), and the spur gear B (27) meshes with the spur gear A (26). The loading frame (28) is fixedly connected to the bottom of the displacement plate (18), and the end of the guide plate (16) away from the sealing plate (15) is also rotatably connected to the loading frame (28).

4. The herbal medicine extraction device based on multi-stage gradient extraction according to claim 1, characterized in that: The solution supply assembly (6) includes: The bracket (29) is fixedly connected to the top of the support base plate (1). Multiple solution tanks (30) are fixedly connected to the outside of the bracket (29). A column (31) is fixedly connected to the middle of the bracket (29). A drainage box (32) is fixedly connected to the top of the column (31). Multiple drainage tubes (33) are evenly and fixedly connected to the outside of the drainage box (32), one of the drainage tubes (33) is used for cleaning water, and the other drainage tubes (33) extend into the interior of the corresponding solution tank (30); The stand (34) is fixedly connected to the top of the support base plate (1). A drainage pump (35) is fixedly connected to one side of the stand (34). A supply pipe (36) is fixedly connected to the output end of the drainage pump (35). An application pipe (37) is fixedly connected to the top of the extraction box (2). The end of the supply pipe (36) away from the drainage pump (35) is also connected to the application pipe (37). A switching component is disposed inside the drainage box (32) to open one of the drainage tubes (33) and block the other drainage tubes (33) to achieve the supply of the corresponding solution.

5. The herbal medicine extraction device based on multi-stage gradient extraction according to claim 4, characterized in that: The switching component includes: A transmission pipe (38) is rotatably connected to the top of the drainage box (32). An adjustment plate (39) is fixedly connected to one end of the transmission pipe (38) inside the drainage box (32). A flow channel (40) is opened on the adjustment plate (39). A liquid delivery pipe (44) is rotatably connected to the top of the transmission pipe (38). The end of the liquid delivery pipe (44) away from the transmission pipe (38) is also fixedly connected to the input end of the drainage pump (35). A drive motor (41) is fixedly connected to the top of the diversion box (32). A spur gear C (42) is fixedly connected to the output end of the drive motor (41). A spur gear D (43) is fixedly connected to the outside of the transmission pipe (38), and the spur gear D (43) is also meshed with the spur gear C (42).

6. The herbal extraction device based on multi-stage gradient extraction according to claim 2, characterized in that: The top of the pretreatment box (7) is funnel-shaped, and the bottom of the pretreatment box (7) is inclined toward the supporting base plate (1).

7. The herbal medicine extraction device based on multi-stage gradient extraction according to claim 3, characterized in that: A linear guide rail is fixedly connected to one side of the transmission plate (17), and a linear slider is fixedly connected to one end of the displacement plate (18) near the linear guide rail, and the linear slider is also slidably connected to the linear guide rail.

8. The herbal medicine extraction device based on multi-stage gradient extraction according to claim 4, characterized in that: An observation window is provided on the outside of the solution tank (30), and a transparent observation plate is fixedly connected inside the observation window.

9. The herbal medicine extraction device based on multi-stage gradient extraction according to claim 4, characterized in that: The bottom of the application tube (37) is fixedly connected to a plurality of diversion tubes, and each of the diversion tubes extends into the interior of the extraction box (2).

10. The herbal extraction device based on multi-stage gradient extraction according to claim 5, characterized in that: The outer side of the adjusting plate (39) is provided with a sealing groove, and a sealing strip is fixedly connected inside the sealing groove.

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