Efficient layered extraction method and extraction device for effective components of plants

Abstract

The invention discloses an efficient layered extraction method and an extraction device for plant effective components. According to the extraction mode, an organic solvent is mainly used as a main extracting agent to extract the effective components; meanwhile, a related extraction device is utilized in the extraction process, so that the problem of high-concentration selection of the organic solvent is effectively solved, and the problem of explosion in the extraction process can also be effectively solved; besides, compared with a traditional extraction mode, the method has the advantages that the extraction rate of the final effective components is increased by 3-5 times, and the extracted components are more uniform and full through multiple heating cycles; meanwhile, the matched extraction device is simple in structure, the organic solvent can be recycled, and the problem that the high-concentration organic solvent is easy to volatilize can be effectively solved.

Description

Technical Field

[0001] The invention belongs to the technical field of Chinese herbal medicine manufacturing and food industry, and particularly relates to a method and device for efficiently extracting effective plant components by stratification. Background Art

[0002] The medicinal active ingredients of plants are typically stored in the vacuoles of cells. When the cells remain intact, the solvent first needs to infiltrate the plant surface, then penetrate the cell wall and cell membrane, enter the cellular tissue, and dissolve the active ingredients. At this point, a concentration difference forms inside and outside the cell, forcing the high-concentration extract to diffuse outward. Simultaneously, the concentrated extract is replaced by a dilute extract or fresh solvent, completing the entire extraction process.

[0003] At present, there are corresponding methods and corresponding devices for extracting effective ingredients. For example, the patent with patent number and publication number CN100486663C discloses a method for extracting effective ingredients from plants. This method changes the microscopic properties of effective ingredients in plants through the principle of mutual adsorption or interaction of particle clusters or molecular clusters between chemical additives and effective ingredients, and its dissolution amount is increased by 80% to 400%; to a certain extent, the extraction rate of effective ingredients is improved; however, this method requires the addition of certain chemical additives such as fixed alkali and fixed acid, and then extraction is carried out using ethanol; the need to use additional chemical additives makes the process complicated; at the same time, during the process of extraction using ethanol, the ethanol extraction process is difficult to control; in addition, in the existing technology, the extraction of many effective ingredients requires the participation of ethanol; low-concentration ethanol is inefficient during extraction, resulting in a low final ingredient extraction rate; high-concentration ethanol has two problems during the temperature-raising extraction process, one is easy volatilization, and the other is easy explosion; problems still exist to a certain extent.

[0004] In addition, patent publication number CN117815698A discloses a device for extracting active ingredients from medicinal plants. The device can automatically add materials and automatically discharge slag. After adding materials and discharging slag, the extraction tank can be automatically restored to a sealed state, eliminating the need for manual addition of materials and slow discharge of slag. The operation is simple and convenient, effectively saving operation time. To a certain extent, the extraction is automated. However, during the extraction process, the device integrates multiple devices to replace various steps in the plant active ingredient extraction process, resulting in a complex device structure. In addition, the use of high-concentration ethanol in the final extraction process is very dangerous, especially during the pressure conversion process. To a certain extent, there are still defects.

[0005] Therefore, a method and device for efficiently extracting plant active ingredients from plant substances are needed to solve the above technical problems. Summary of the Invention

[0006] In order to solve the above technical problems, the present invention designs a high-efficiency layered extraction method and extraction device for plant active ingredients. This extraction method mainly uses organic solvents as the main extractant to extract the active ingredients; at the same time, the use of relevant extraction devices in the extraction process not only effectively solves the problem of high-concentration selection of organic solvents, but also effectively solves the problem of explosion during the extraction process; in addition, compared with traditional extraction methods, this method increases the extraction rate of the final active ingredients by 3-5 times, and through multiple heating cycles, the extracted ingredients are more uniform and full; at the same time, the matching extraction device has a simple structure, can recycle organic solvents, and can effectively solve the problem of easy volatilization of high-concentration organic solvents.

[0007] In order to achieve the above technical effects, the present invention discloses, on the one hand, a method for efficiently extracting plant active ingredients by stratification, comprising the following steps:

[0008] S1: Raw material pretreatment: crush the raw materials, perform distillation extraction, filtration, redistillation, purification and concentration to obtain a processed paste or viscous liquid;

[0009] S2: Processing of paste or viscous liquid passing through S1:

[0010] S2.1: The prepared paste is subjected to constant temperature refining extraction for 2 hours each time, and a certain proportion of liquid is used as the corresponding solvent for repeated refining extraction during the constant temperature;

[0011] S2.2: The thick liquids refined in S2.1 are mixed and precipitated at zero degrees Celsius, and then distilled and concentrated again to a paste, which is the finished product of the extraction.

[0012] Furthermore, the solvent used in S2.1 is ethanol or ethyl acetate, and the extraction is repeated in a gradient concentration from high to low during use; and the constant temperature is between 40°C and 100°C.

[0013] Furthermore, the gradient concentration of the solvent in S2.1 is 98%, 80%, 70%, 60%, 50%, 40%, and 30% from high to low.

[0014] On the other hand, the present invention provides a highly efficient layered extraction device for plant active ingredients, comprising: an outer shell, an outer cover, a rotating device, a cold circulation pump, an extraction pump, an injection pump, and an inner liner; the outer shell is a hollow structure and the inner liner is installed inside, and the inner liner is arranged at a distance from the bottom end of the outer shell; the outer cover is detachably mounted on the upper end of the outer shell, the center of the upper end of the outer cover is fixedly connected to the rotating device, and the rotating device is fixedly mounted on the side of the outer shell; the cold circulation pump is connected to the outer cover via a provided connecting pipe, and a heating device is fixedly mounted on the lower end of the outer shell; the extraction of active ingredients is achieved by filling a gap between the inner liner and the outer shell with liquid for heating, and repeated cooling cycles of the cold circulation pump;

[0015] Furthermore, the rotating device includes a connecting rod, an inner sleeve, an outer sleeve, a screw, a slider, a helical gear, and a motor; the upper end of the side wall of the outer shell is fixedly connected to the inner sleeve, a vertical slot is opened on the side wall of the inner sleeve, and an oblique slot is opened on the upper end of the vertical slot, the screw is movably mounted on the inside of the inner sleeve, and a slider is movably mounted on the screw, the slider is mounted on the vertical slot, the upper end of the slider is fixedly mounted on the outer sleeve, and the outer sleeve is sleeved on the outside of the inner sleeve; the connecting rod is fixedly mounted on the side wall of the outer sleeve, and the end of the connecting rod is fixedly mounted on the upper end of the outer cover; a receiving plate is fixedly mounted on the outer side wall of the outer shell opposite to the lower end of the screw, the motor is fixedly mounted on the receiving plate, and the helical gear is fixedly mounted on the output shaft of the motor; the end of the screw is fixedly mounted on the helical gear, and the end of the helical gear meshes with the helical gear on the output shaft of the motor;

[0016] Furthermore, an extraction pump and an injection pump are fixedly installed on both side walls of the inner container through pipes, and the internal pipe of the extraction pump is connected to the bottom end of the inner container; the pipe provided on the injection pump is not connected to the bottom end;

[0017] Furthermore, a plurality of support blocks are fixedly mounted in a circumferential array on the inner upper end of the outer shell, the upper ends of the support blocks receive a receiving ring disposed on the outer side of the upper edge of the inner liner, and a sealing cover is also provided on the upper end of the inner liner;

[0018] Furthermore, a liquid level sensor is provided on the inner side wall of the outer shell in the gap between the inner container and the outer shell; a plurality of supporting legs are provided in a circular array around the bottom end of the outer shell;

[0019] Furthermore, a control panel is fixedly mounted on the upper end of the outer cover; and the outer cover and the connecting pipe are detachably connected via a connector.

[0020] The beneficial effects of the present invention are:

[0021] The application designs a plant effective component high-efficiency layered extraction method and an extraction device, through the extraction method in the application, through the utilization of specific solvents and through the cyclic extraction mode, the extraction of effective components is realized; the method utilizes organic solvents as main extraction agents to extract effective components; meanwhile, in the extraction process, the related extraction device is utilized to not only effectively solve the high-concentration selection problem of organic solvents, but also effectively solve the explosion problem existing in the extraction process; in addition, compared with the traditional extraction mode, the extraction rate of the final effective components is improved, through multiple heating cycles, the extracted components are more uniform and full; meanwhile, the matched extraction device has a simple structure, the organic solvents can be recycled, and the problem of easy volatilization of high-concentration organic solvents can be effectively solved.

[0022] In addition, the application is provided with the corresponding extraction device, including: an outer shell, an outer cover, a rotating device, a cold circulation pump, a pumping pump, a liquid injection pump, an inner container; the rotating device can be used to lift and rotate the outer cover, and the outer cover can be opened after lifting and rotating, so that the opening can be automated; meanwhile, the cold circulation pump can be used to cool and circulate the volatilized solvents, so that the problem of easy explosion of alcohol in the heating and volatilization process can be solved through multiple volatilization and cooling circulation; meanwhile, a liquid level sensor is arranged on the outer shell between the inner container and the outer shell, the liquid level sensor can be used to detect the internal liquid level, and the water detection function can be realized through the corresponding liquid level detection; the extraction device of the device has a simple structure, the organic solvents can be recycled, and the problem of easy volatilization of high-concentration organic solvents can be effectively solved. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description.

[0024] Figure 1 is the actual state diagram of the ethanol gradient concentration from high to low in the application;

[0025] Figure 2 is the actual state diagram of the ethanol gradient concentration from low to high in the application;

[0026] Figure 3 is the comparison diagram of the mixed solution extracted under different ethanol sequence gradient concentrations under light, and the extraction result state diagram of the light irradiation ethanol gradient concentration from low to high;

[0027] Figure 4 is the comparison diagram of the mixed solution extracted under different ethanol sequence gradient concentrations under light, and the extraction result state diagram of the light irradiation ethanol gradient concentration from high to low;

[0028] Figure 5This is a comparison diagram of mixed solutions extracted with different sequential gradient concentrations of ethanol under simultaneous illumination in the present invention.

[0029] Figure 6 It is a schematic diagram of the overall structure of a highly efficient layered extraction device for plant active ingredients;

[0030] Figure 7 It is a top view of a device for efficient layered extraction of plant active ingredients;

[0031] Figure 8 It is a side view of a device for efficient layered extraction of plant active ingredients;

[0032] Figure 9 This is an exploded view of a device for highly efficient layered extraction of plant active ingredients;

[0033] Figure 10 It is a schematic cross-sectional structure diagram of a highly efficient layered extraction device for plant active ingredients;

[0034] Figure 11 This is another overall structural diagram of a highly efficient layered extraction device for plant active ingredients;

[0035] Figure 12 This is an enlarged diagram of point A of a highly efficient layered extraction device for plant active ingredients.

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

[0037] 1-outer shell, 11-support foot, 12-support block, 13-heating device, 14-liquid level sensor, 2-outer cover, 21-control panel, 3-rotating device, 31-connecting rod, 32-inner sleeve, 321-oblique groove, 322-vertical groove, 33-outer sleeve, 331-screw, 332-slider, 333-helical gear, 34-connecting plate, 35-motor, 4-cold circulation pump, 41-connecting pipe, 42-connecting head, 5-extraction pump, 6-liquid injection pump, 7-inner liner, 71-connecting ring, 72-sealing cover, 73-pipeline. DETAILED DESCRIPTION

[0038] Example 1

[0039] A method for efficiently extracting plant active ingredients by stratification, comprising the following steps:

[0040] S1: Raw material pretreatment: crush the raw material, perform distillation extraction, filtration, redistillation, purification and concentration to obtain a processed paste or viscous liquid (or the raw material can be directly crushed and then soaked in ethanol to obtain a liquid);

[0041] S2: Processing of the paste or viscous liquid in S1: subjecting the prepared paste to constant temperature refining extraction, maintaining the constant temperature at 100°C for 2 hours per time, using ethanol or ethyl acetate as the corresponding solvent during the constant temperature; and repeatedly extracting in a gradient concentration from high to low in this process; repeatedly extracting in a gradient concentration from high to low in use, from 98%, 80%, 70%, 60%, 50%, 40%, and 30%, and simultaneously subjecting the paste to zero-degree low-temperature circulation treatment using a device;

[0042] The refined thick liquid is mixed and precipitated at zero degrees Celsius, and then distilled and concentrated into a paste, which is the finished product of the extraction.

[0043] The extraction rate of the plant active ingredients extracted through the above steps is improved. Through multiple heating and condensation cycles, the extracted ingredients are more uniform and full, the aroma is more sufficient, and there is less precipitation. Specifically, the solution after the above steps and the treatment with the corresponding device is verified and explored; the specific results are as follows Figure 1 As shown, Figure 1 The actual state of ethanol gradient concentration from high to low treatment, Figure 1 The concentrations of ag in the reaction mixture are 98%, 80%, 70%, 60%, 50%, 40%, and 30% of ethanol, respectively. As can be seen from the figure, the obtained substance is clear, has a fresh aroma, and has no precipitation. At the same time, in this embodiment, the refractive index and relative density are used to explore the effective components prepared by the above method and the relevant device, as shown in Table 1 below.

[0044] Table 1 Refractive index and relative density after treatment according to ethanol gradient concentration from high to low

[0045]

[0046]

[0047] As shown in Table 1 above, its relative density is between 0.8151 and 0.9505. This is because under these conditions, the proteins, colloids, and sugars in the solute will precipitate first, allowing the volatile ketones to dissolve in the ethanol. As a result, most of the active ingredients are evenly dispersed in the solvent ethanol. This makes the final product clear, with a fresh aroma and no precipitation. This indirectly reflects that the extraction rate of the active ingredients has been effectively improved.

[0048] Example 2

[0049] A method for efficiently extracting plant active ingredients by stratification, comprising the following steps:

[0050] S1: Raw material pretreatment: crush the raw materials, perform distillation extraction, filtration, redistillation, purification and concentration to obtain a processed paste or viscous liquid;

[0051] S2: Treatment of the paste or viscous liquid in S1: The prepared paste is subjected to constant temperature refined extraction, the constant temperature is maintained at 100°C, and the constant temperature extraction is performed for 2 hours / time. Ethanol or ethyl acetate is used as the corresponding solvent during the constant temperature; and in the process, the extraction is repeated in sequence according to the gradient concentration from high to low; when used, the extraction is repeated in sequence according to the gradient concentration from 30%, 40%, 50%, 60%, 70%, 80%, 98% from high to low. At the same time, the device is used to perform zero-degree low-temperature circulation treatment; the refined thick liquid is mixed and subjected to zero-degree low-temperature precipitation, and then distilled and concentrated into a paste, which is the extracted product. The specific results are as follows Figure 2 As shown, Figure 2 This is the actual state of the ethanol gradient concentration from low to high treatment. As can be seen from the figure, the solution is viscous and has a lot of precipitation. Specifically, in this example, the refractive index and relative density after the above steps are verified and explored. The specific results are shown in Table 2 below:

[0052] Table 2 Refractive index and relative density after treatment according to ethanol gradient concentration from low to high

[0053] Solvent concentration (alcohol %) Refractive index relative density 30 1.3879 1.0665 40 1.3866 0.9378 50 1.3738 0.9622 60 1.3887 0.9821 70 1.3723 0.9044 80 1.3780 0.8537 98 1.3627 0.7985

[0054] It can be seen from the above table that when combined with low-temperature circulation treatment from low to high, its relative density is 1.0665-0.7985; due to the reverse change of concentration, there will be outflow of solute, which is not easy to separate. At the same time, it can be seen from the above refractive index and relative density that its impurities are relatively high and the liquid is viscous. This is because many non-effective ingredients are mixed into the solvent and are not easy to separate, so the final solution is turbid and lacks aroma.

[0055] At the same time, in this embodiment, the solutions obtained in the above embodiment 1 and the present embodiment were mixed to explore their specific situations; specifically, Figure 3 、 Figure 4 、 Figure 5 As shown; Figure 3 and Figure 4 It can be seen from the comparison that after low temperature cycle treatment in different orders, the concentration of ethanol from low to high is prone to turbidity and lack of aroma, while Figure 5 It can be seen that in the comparison of the two, when the ethanol concentration is increased from low to high, there is more precipitation at the bottom, which proves that the extraction efficiency is low and the effective components cannot be effectively extracted. However, the effective components treated by the method of the present invention are clear without precipitation and have sufficient aroma, which proves that the extraction efficiency is high and the relevant components can be efficiently extracted.

[0056] Example 3

[0057] A method for efficiently extracting plant active ingredients by stratification, comprising the following steps:

[0058] S1: Raw material pretreatment: crush the raw material, perform distillation extraction, filtration, redistillation, purification and concentration to obtain a processed paste or viscous liquid (or the raw material can be directly crushed and then soaked in ethanol to obtain a liquid);

[0059] S2: Processing the paste or viscous liquid in S1: subjecting the prepared paste to constant temperature refining extraction, maintaining the constant temperature at 100°C for 2 hours per time, using ethanol or ethyl acetate as the corresponding solvent during the constant temperature; and repeatedly extracting in a gradient concentration from high to low in the process; repeatedly extracting in a gradient concentration from high to low in the process, and not using the relevant equipment to perform zero-degree low-temperature circulation treatment during the extraction;

[0060] The refined thick liquid is mixed and precipitated at zero degrees Celsius, and then distilled and concentrated into a paste, which is the finished product of the extraction.

[0061] In this embodiment, the refractive index and relative density are used to explore the effective ingredients prepared by the above method without using relevant devices, as shown in Table 3 below.

[0062] Table 3 Refractive index and relative density after treatment with ethanol gradient concentration from high to low without low-temperature condensation treatment

[0063] Solvent concentration (alcohol %) Refractive index relative density 30 14.667 0.9838 40 1.4678 0.9536 50 1.3730 0.9123 60 1.3657 0.9125 70 1.3625 0.9210 80 1.3586 0.9430 98 1.3530 0.9593

[0064] Page 10 of 14

[0065] As can be seen from the above table, the relative density of the extracted effective components obtained by repeatedly extracting according to a gradient concentration of 98%, 80%, 70%, 60%, 50%, 40%, and 30% from high to low, without using relevant equipment to perform zero-degree low-temperature circulation treatment, is all above 0.9100. Compared with the refractive index and relative density in Example 1, when the low-temperature circulation treatment is not performed, the phase density of the refractive coefficient is greatly different, which indirectly reflects that many volatile substances are easily volatilized when the low-temperature circulation treatment is not performed, so that the effect of the effective components finally extracted is far inferior to the treatment method in Example 1.

[0066] Specifically, the present invention repeatedly extracts at concentrations from high to low, such as 98%, 80%, 70%, 60%, 50%, 40%, and 30%, and combines the synergistic effect of the low-temperature condensation cycle of the device so that the effective ingredients finally extracted have no precipitation and sufficient aroma, thereby enabling efficient extraction and having good commercial application value.

[0067] Example 4

[0068] Based on the devices described in the above embodiments 1-3, specifically, a high-efficiency stratified extraction device for plant active ingredients includes: an outer shell 1, an outer cover 2, a rotating device 3, a cold circulation pump 4, an extraction pump 5, an injection pump 6, and an inner liner 7; the outer shell 1 is a hollow structure and the inner liner 7 is installed inside. The inner liner 7 is arranged at a distance from the bottom end of the outer shell 1. The interval setting ensures that water can be injected into the interior during use for heating the water area; the outer cover 2 is detachably installed on the upper end of the outer shell 1, and a good sealing condition is formed by the outer cover 2 for sealing. The rotating device 3 is fixedly connected to the center of the upper end of the outer cover 2, and the rotating device 3 is fixedly installed on the side of the outer shell 1. The cold circulation pump 4 is connected to the outer cover 2 through a connecting pipe 41, and a heating device 13 is fixedly installed at the lower end of the outer shell 1; the extraction of active ingredients is achieved by filling the gap between the inner liner 7 and the outer shell 1 with liquid for heating, and repeated cooling cycles of the cold circulation pump 4.

[0069] Example 5

[0070] In this embodiment, based on the rotating device 3 described in Example 1, the outer cover 2 can be lifted and rotated by the rotating device 3, and can be opened by rotating it again after lifting, so that automatic opening can be achieved; at the same time, the volatile solvent can be cooled and circulated by the provided cold circulation pump 4, and the problem of alcohol easily exploding during heating and volatilization can be solved through multiple volatilization and cooling cycles; specifically, the rotating device 3 includes a connecting rod 31, an inner sleeve 32, an outer sleeve 33, a screw 331, a slider 332, a bevel gear 333, Motor 35; The upper end of the side wall of the outer shell 1 is fixedly connected to the inner sleeve 32, and a vertical groove 322 is provided on the side wall of the inner sleeve 32. An oblique groove 321 is provided on the upper end of the vertical groove 322. The screw 331 is movably mounted on the inside of the inner sleeve 32, and a slider 332 is movably mounted on the screw 331. The slider 332 is mounted on the vertical groove 322. The upper end of the slider 332 is fixedly mounted on the outer sleeve 33 and the outer sleeve 33 is sleeved and mounted on the outside of the inner sleeve 32; the connecting rod 31 is fixedly mounted on the side wall of the outer sleeve 33. The connecting rod The end of the screw 331 is fixedly mounted on the upper end of the outer cover 2; a receiving plate 34 is fixedly mounted on the outer side wall of the outer shell 1, opposite the lower end of the screw 331, and the motor 35 is fixedly mounted on the receiving plate 34, and the output shaft of the motor 35 is fixedly mounted on the bevel gear 333; the end of the screw 331 is fixedly mounted on the bevel gear 333, and the end of the bevel gear 333 is engaged with the bevel gear 333 on the output shaft of the motor 35; the working process of the rotating device 3 is as follows: when the motor 35 rotates, the rotation of the motor 35 drives the rotation of the bevel gear 333 The rotation of the bevel gear 333 drives the screw rod 331 to rotate, and the rotation of the screw rod 331 drives the slider 332 to move, which drives the outer sleeve 33 to move. The movement of the outer sleeve 33 drives the connecting rod 31 to move upward, thereby raising the outer cover 2. At the same time, an oblique groove 321 is provided at the end of the vertical groove 322. When the oblique groove 321 slides to the end, it moves along the oblique groove 321, thereby rotating the cover and the inner container 7 from a concentric state to a non-concentric state, thereby opening the outer cover 2. In other words, the closing and opening of the outer cover 2 are achieved by controlling the forward and reverse rotation of the motor 35.

[0071] A control panel 21 is fixedly mounted on the upper end of the outer cover 2, which controls the operation of the motor 35. The outer cover 2 and the connecting pipe 41 are detachably connected via a connector 42. This detachable connection via the connector 42 is designed to accommodate the outer cover 2 during its upward and rotational movement. Specifically, during the rotation of the outer cover 2, the connector 42 must be removed to dismantle the connection to the cold circulation pump 4.

[0072] Example 6

[0073] In this embodiment, based on the inner liner 7 described in Example 1, an extraction pump 5 and an injection pump 6 are fixedly installed on both side walls of the inner liner 7 through pipes. The internal pipe of the extraction pump 5 is connected to the bottom end of the inner liner 7; the pipe provided on the injection pump 6 is not connected to the bottom end; the injection pump 6 can transport liquid into the interior, such as alcohol of different concentrations or water for flushing; different concentrations of alcohol can be quickly switched by providing a three-way valve (not shown in the figure) on the pipe of the injection pump; the extraction pump 5 can be used to extract the liquid inside and extract the used alcohol;

[0074] At the same time, in this embodiment, a plurality of support blocks 12 are fixedly installed in a circular array on the upper end of the inner part of the outer shell 1, and the upper end of the support block 12 receives the receiving ring 71 arranged on the outer side of the upper edge of the inner liner 7. The support block 12 can effectively support the stroke, and a sealing cover is also provided at the upper end of the inner liner 7; the sealing cover can seal the inner liner 7, which can effectively prevent the alcohol from volatilizing during the water bath heating process; at the same time, a liquid level sensor 14 is also provided on the inner side wall of the outer shell 1 in the gap between the inner liner 7 and the outer shell 1, and the liquid level sensor 14 can monitor the internal liquid level, and the liquid level monitoring can be used as feedback to monitor the usage of the water used for water bath heating inside; a plurality of support feet 11 are provided in a circular array around the bottom end of the outer shell 1, and the support feet 11 are used to support the entire device.

[0075] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the invention to only the specific implementation methods described.

Claims

1. A method for efficient layered extraction of plant active ingredients, characterized in that: The following steps are involved: S1: Raw material pretreatment: crush the raw materials, perform distillation extraction, filtration, redistillation, purification and concentration to obtain a processed paste or viscous liquid; S2: Processing of paste or viscous liquid passing through S1: S2.1: The prepared paste is subjected to constant temperature refining extraction for 2 hours each time, and a certain proportion of liquid is used as the corresponding solvent for repeated refining extraction during the constant temperature; S2.2: The thick liquids refined in S2.1 are mixed and precipitated at zero degrees Celsius, and then distilled and concentrated again to a paste, which is the finished product of the extraction.

2. The method for extracting plant active ingredients efficiently by stratification according to claim 1, wherein: The solvent used in S2.1 is ethanol or ethyl acetate, and the extraction is repeated in a gradient concentration from high to low during use; and the constant temperature is between 40°C and 100°C.

3. The method for extracting plant active ingredients efficiently by stratification according to claim 1, wherein: The solvent gradient concentration in S2.1 is 98%, 80%, 70%, 60%, 50%, 40%, and 30% from high to low.

4. A highly efficient stratified extraction device for plant active ingredients according to any one of claims 1 to 3, characterized in that: include: An outer shell, an outer cover, a rotating device, a cold circulation pump, an extraction pump, an injection pump, and an inner liner; the outer shell is a hollow structure and the inner liner is installed inside, and the inner liner is arranged at a distance from the bottom end of the outer shell; the outer cover is detachably mounted on the upper end of the outer shell, the center of the upper end of the outer cover is fixedly connected to the rotating device, the rotating device is fixedly mounted on the side of the outer shell, the cold circulation pump is connected to the outer cover through a provided connecting pipe, and a heating device is fixedly mounted on the lower end of the outer shell; the extraction of effective ingredients is achieved by filling the gap between the inner liner and the outer shell with liquid for heating, and repeated cooling cycles of the cold circulation pump.

5. The device for efficient stratification extraction of plant active ingredients according to claim 4, characterized in that: The rotating device includes a connecting rod, an inner sleeve, an outer sleeve, a screw, a slider, a helical gear, and a motor; the upper end of the side wall of the outer shell is fixedly connected to the inner sleeve, a vertical slot is provided on the side wall of the inner sleeve, and an oblique slot is provided on the upper end of the vertical slot, the screw is movably installed inside the inner sleeve, and a slider is movably installed on the screw, the slider is installed on the vertical slot, the upper end of the slider is fixedly installed on the outer sleeve and the outer sleeve is sleeved on the outside of the inner sleeve; the connecting rod is fixedly installed on the side wall of the outer sleeve, and the end of the connecting rod is fixedly installed on the upper end of the outer cover; a receiving plate is fixedly installed on the outer side wall of the outer shell opposite to the lower end of the screw, the motor is fixedly installed on the receiving plate, and the helical gear is fixedly installed on the output shaft of the motor; the end of the screw is fixedly installed with the helical gear, and the end of the helical gear is meshed with the helical gear on the output shaft of the motor.

6. The efficient stratified extraction device for plant active ingredients according to claim 4, characterized in that: An extraction pump and an injection pump are fixedly installed on both side walls of the inner container through pipes. The internal pipe of the extraction pump is connected to the bottom end of the inner container; the pipe arranged on the injection pump is not connected to the bottom end.

7. The device for efficient stratification extraction of plant active ingredients according to claim 4, characterized in that: A plurality of support blocks are fixedly installed in a circumferential array on the inner upper end of the outer shell. The upper ends of the support blocks receive a receiving ring arranged on the outer side of the upper edge of the inner liner. A sealing cover is also provided on the upper end of the inner liner.

8. The device for efficient stratification extraction of plant active ingredients according to claim 4, characterized in that: A liquid level sensor is also provided on the inner side wall of the outer shell in the gap between the inner container and the outer shell; and a plurality of supporting legs are provided in a circular array around the bottom end of the outer shell.

9. The device for efficient stratification extraction of plant active ingredients according to claim 4, characterized in that: A control panel is fixedly mounted on the upper end of the outer cover; the outer cover and the connecting pipe are detachably connected via a connecting head.

10. A method for efficient layered extraction of plant active ingredients according to any one of claims 1 to 3, characterized in that: The single active ingredient or the mixture of multiple active ingredients of the plant obtained by the method can be used as medicine, tobacco, food, veterinary medicine or feed additive.

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