Preparation device and preparation method of plant small molecule extract

Abstract

The invention relates to the technical field of small molecule extraction, and discloses a plant small molecule extract preparation device and a preparation method thereof.The plant small molecule extract preparation device comprises an extraction tank body and an extraction tank cover, the extraction tank cover is clamped to the top of the extraction tank body, and a stirring assembly used for stirring substances in the extraction tank body is arranged at the bottom of the extraction tank cover; a cooling assembly for cooling exhausted gas is arranged at the top of the extraction tank cover, a stirring plate group can cover a wider area at the bottom of an inner cavity of the extraction tank through the arrangement of a stirring assembly, and meanwhile, stirring dead angles existing in a traditional stirring mode can be effectively reduced through the combination of revolution and autorotation; according to the utility model, materials at the bottom can be fully stirred, and more uniform stirring is beneficial to promoting contact and reaction among the materials, so that the efficiency of a chemical reaction or physical process in the extraction tank is improved, meanwhile, the materials with different components can be more quickly and uniformly mixed together, and the consistency and stability of the extraction process are ensured.

Description

Technical Field

[0001] The present invention relates to the field of small molecule extraction, and in particular to a preparation device and a preparation method of a plant small molecule extract. Background Art

[0002] The extraction tank can be used as a preparation device for plant small molecule extracts. Since the extraction tank is a device used to extract effective ingredients from plant and animal substances, it can be applied to the production process in the fields of biomedicine, food, cosmetics, etc., but it itself does not directly belong to the above-mentioned specific medical diagnosis, analysis and processing or medical activities.

[0003] In the current application field of extraction tanks, common extraction tanks on the market often have some significant problems. For example, in terms of stirring, the traditional stirring devices used in many extraction tanks usually have a single stirring method, resulting in poor stirring effect, uneven stirring, and insufficient stirring. This makes it impossible for the materials to be fully mixed and reacted in the tank, seriously affecting the extraction efficiency and quality. At the same time, due to incomplete stirring, it is easy to cause the materials to precipitate and accumulate in local areas, thereby affecting the consistency and stability of the extraction;

[0004] During the operation of the extraction tank, materials tend to adhere to the inner wall of the tank, forming dirt and residues that are difficult to remove. These adhesions will not only cause waste of materials, but also breed bacteria and impurities, increasing the risk of cross-contamination. In addition, long-term material adhesion and accumulation will cause corrosion and wear to the inner wall of the tank, shortening the service life of the extraction tank. Moreover, the attachments on the inner wall will be mixed in during the subsequent product extraction process, seriously affecting the quality stability of the product. The dirt on the inner wall also makes subsequent cleaning work extremely difficult, consuming a lot of time, manpower and material resources, while increasing cleaning costs. Incomplete cleaning will also affect the next extraction operation, thereby affecting the efficiency and stability of the entire production process.

[0005] The extraction tank will perform heating, chemical reactions or physical changes when extracting small molecules from plants. These processes will generate a large amount of heat energy, causing the pressure in the tank to increase. When the pressure exceeds a certain limit, in order to ensure the safe operation of the extraction tank and prevent dangerous situations such as equipment damage or even explosion caused by excessive pressure, it is necessary to discharge high-temperature gas to reduce the pressure in the tank. High-temperature gas will increase the temperature of the surrounding environment, causing thermal pollution and affecting the surrounding ecology and working environment. At the same time, high-temperature gas will cause burns and other injuries to operators, increasing the probability of safety accidents. However, there is usually no treatment method on the market to cool down the high-temperature gas before discharging it.

[0006] Therefore, it is necessary to provide a preparation device and a preparation method of plant small molecule extracts to solve the above problems. Summary of the invention

[0007] In view of the deficiencies in the prior art, the object of the present invention is to provide a device and a method for preparing plant small molecule extracts.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for preparing plant small molecule extracts and a preparation method thereof, comprising an extraction tank body and an extraction tank cover, wherein the extraction tank cover is snap-connected to the top of the extraction tank body, a stirring component for stirring the material inside the extraction tank body is disposed at the bottom of the extraction tank cover, and a cooling component for cooling the exhausted gas is disposed at the top of the extraction tank cover.

[0009] Preferably, the stirring assembly includes a liquid-blocking plate, which is fixedly connected to the bottom of the extraction tank cover, and the bottom of the liquid-blocking plate is fixedly connected to a first gear plate, and a driving device is installed at the bottom of the liquid-blocking plate, and the bottom of the first gear plate is rotatably connected to an annular positioning frame, and the top of the annular positioning frame is rotatably connected to a second gear plate and a third gear plate in a circular distribution.

[0010] Preferably, the stirring assembly also includes a stirring plate group, which is fixedly connected to the bottom of the second gear plate and the third gear plate, and the bottom of the annular positioning frame is fixedly connected to an L-shaped connecting rod, and the end of the L-shaped connecting rod away from the annular positioning frame is fixedly connected to an arc-shaped sliding bar.

[0011] Preferably, the cooling component includes a square shell, the square shell is fixedly connected to the top of the extraction tank cover, the bottom of the extraction tank cover is provided with a pressure relief port, the inside of the pressure relief port is slidably connected with an electric control valve, the inside of the square shell is fixedly connected with a positioning block, and the bottom of the annular positioning frame is fixedly connected with a temperature controller.

[0012] Preferably, the cooling component also includes a sealing ring, which is fixedly connected to the top of the positioning block, and the inner side of the sealing ring is fixedly connected to a hollow tube, the hollow tube is provided with an air inlet hole, and the interior of the hollow tube is fixedly connected to an air blocking block.

[0013] Preferably, the output shaft of the driving device is fixedly connected to the annular positioning frame, the first gear plate is meshed with the second gear plate, and the second gear plate is meshed with the third gear plate.

[0014] Preferably, the square shell and the positioning block are both connected to the pressure discharge port, the temperature controller can electrically control the electric control valve, and the air inlet is obliquely opened inside the hollow tube.

[0015] A method for preparing a plant small molecule extract, characterized in that it comprises the following steps:

[0016] Step 1: Put the material to be extracted into the extraction tank through the feed port, and then add an appropriate amount of solvent into the extraction tank according to the process formula;

[0017] Step 2: Start the heating device to heat the material and solvent in the extraction tank to the set temperature, and start the stirring device at the same time to fully mix the material and solvent to promote the extraction process;

[0018] Step 3: Maintain the set temperature and stirring conditions to allow the material to undergo a full extraction reaction in the solvent. After the extraction reaction is completed, stop heating and stirring;

[0019] Step 4: discharging the extracted solution or the separated product through the discharge port;

[0020] Step 5: After the discharge is completed, clean the extraction tank with clean water or appropriate cleaning agent to prepare for the next extraction operation.

[0021] Preferably, during the working process of step 1, it is necessary to check the sealing of the equipment, including the pipeline connections, valves, and tanks, to ensure that there is no leakage.

[0022] Preferably, in step 2, the heating temperature and heating rate need to be strictly controlled to avoid excessively high temperature or too fast heating that may lead to material decomposition, excessive evaporation of the solvent, or dangerous reactions.

[0023] The present invention provides a preparation device and a preparation method of a plant small molecule extract. Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. Through the arrangement of the stirring assembly, the second gear plate will mesh with the first gear plate when the annular positioning frame drives the second gear plate and the third gear plate to rotate, and the second gear plate will drive the third gear plate to rotate after meshing with the first gear plate, so that the second gear plate and the third gear plate will drive the stirring plate group at the bottom to rotate in the process of orbiting around the first gear plate, so that the stirring plate group rotates while orbiting, so that the stirring plate group can cover a wider area at the bottom of the inner cavity of the extraction tank, reducing the stirring dead angle existing in the traditional stirring method, ensuring that the materials at the bottom can be fully stirred, making the materials stirred more evenly and fully, and improving the stirring effect, and more even stirring helps to promote contact and reaction between materials, thereby improving the efficiency of chemical reactions or physical processes in the extraction tank, and at the same time, materials of different components can be mixed more quickly and evenly, ensuring the consistency and stability of the extraction process, in addition, it avoids the precipitation and accumulation of materials at the bottom of the extraction tank body, and maintains the uniform distribution of materials.

[0025] Secondly, compared with simply increasing the power or number of stirring devices to improve the stirring effect, this composite motion mode can achieve a better stirring effect with the stirring plate group under the same energy consumption. At the same time, compared with the stirring device installed in the extraction tank on the market, this gear transmission mode is direct and efficient, with less energy transmission loss, and can more effectively utilize power. At the same time, the combination of revolution and rotation makes the stirring range wider and more comprehensive, and the stirring effect more uniform and in-depth. Moreover, due to the more sufficient and uniform stirring, the reaction or processing process in the extraction tank can be accelerated;

[0026] Secondly, due to the setting of the arc-shaped slide bar, the arc-shaped slide bar is driven to scrape the inner wall of the extraction tank during the rotation of the annular positioning frame, thereby avoiding the adhesion of materials to the inner wall of the tank during the extraction process, reducing material residue and waste, and helping to keep the inner wall of the tank clean, reducing the accumulation of dirt and impurities, reducing the risk of cross contamination, and ensuring that the material fully participates in the reaction or extraction process without being affected by the adhesion of the tank wall, thereby improving the efficiency and quality of the extraction, reducing the corrosion and wear of the material on the inner wall of the tank, extending the service life of the extraction tank, reducing the difficulty and workload of subsequent cleaning of the tank body, saving cleaning time and cost, and at the same time, compared with the stirring device installed on the extraction tank on the market, the stirring device can scrape the inner wall of the extraction tank while stirring, thereby effectively removing the material attached to the inner wall of the tank, reducing the amount of material residue, and improving the utilization rate of the material, while helping to maintain the cleanliness and hygiene of the inside of the extraction tank, reducing the accumulation of dirt and impurities, avoiding the corrosion and wear of the inner wall of the tank caused by long-term adhesion of materials, extending the service life of the extraction tank, and reasonably utilizing power to reduce energy consumption.

[0027] 2. Through the setting of the cooling component, when the internal pressure of the extraction tank is too large and needs to be discharged, the high-temperature airflow inside the extraction tank will flow into the interior of the positioning block through the pressure discharge port, and the high-temperature airflow flowing at a high speed inside the positioning block will flow into the interior of the hollow tube in a spiral shape along the air inlet hole. The high-temperature airflow in the flow process causes the temperature to drop due to the high-speed flow. At this time, part of the high-temperature airflow with a reduced temperature flows out along the hollow tube close to the end of the air block, while most of the high-temperature airflow flows out along the hollow tube away from the end of the air block in an opposite spiral flow manner due to the obstruction of the air block, thereby achieving the purpose of quickly cooling the high-temperature airflow discharged from the extraction tank, reducing the temperature of the discharged airflow, reducing the risk of safety hazards such as burns caused by high-temperature airflow to personnel and the surrounding environment, avoiding direct discharge of high-temperature airflow to cause thermal damage to surrounding connected equipment and pipelines, extending their service life, reducing heat emissions to the environment, and reducing the impact of thermal pollution on the ecological environment. At the same time, rapid cooling can shorten the pressure discharge time of the extraction tank, speed up the production process, and improve overall production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the position relationship of the overall device of the present invention;

[0029] Figure 2 It is a cross-sectional view of the overall device of the present invention;

[0030] Figure 3 This is a schematic diagram of the position relationship of the stirring components of the present invention;

[0031] Figure 4 For the present invention Figure 3 A magnified view of the structure at center;

[0032] Figure 5 This is a schematic diagram of the positional relationship of the annular positioning frame, the L-shaped connecting rod, and the arc-shaped sliding bar of the present invention;

[0033] Figure 6 This is a schematic diagram of the positional relationship between the extraction tank cover and the cooling component of the present invention;

[0034] Figure 7 For the present invention Figure 6 Middle B shows an enlarged view of the structure;

[0035] Figure 8 This is a schematic diagram of the positional relationship of the hollow tube, air inlet, and air blocking block of the present invention;

[0036] Reference numerals: 11, extraction tank body; 12, extraction tank cover;

[0037] The stirring assembly includes: 21, a liquid blocking plate; 22, a first gear plate; 23, a driving device; 24, an annular positioning frame; 25, a second gear plate; 26, a third gear plate; 27, a stirring plate group; 28, an L-shaped connecting rod; 29, an arc-shaped slide bar;

[0038] The cooling component includes: 31, square shell; 32, pressure discharge port; 33, electric control valve; 34, positioning block; 35, sealing ring; 36, hollow tube; 37, air inlet; 38, air blocking block; 39, temperature controller. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0040] In the description of the present invention, the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0041] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0042] Embodiment 1:

[0043] Implementation example Figures 1 to 8 As shown, a preparation device and a preparation method for plant small molecule extracts provided by an embodiment of the present invention include an extraction tank body 11 and an extraction tank cover 12, the extraction tank cover 12 is snap-connected to the top of the extraction tank body 11, a stirring component for stirring the material inside the extraction tank body 11 is arranged at the bottom of the extraction tank cover 12, and a cooling component for cooling the exhausted gas is arranged at the top of the extraction tank cover 12.

[0044] The stirring assembly includes a liquid-blocking plate 21, which is fixedly connected to the bottom of the extraction tank cover 12, and a first gear disc 22 is fixedly connected to the bottom of the liquid-blocking plate 21. A driving device 23 is installed at the bottom of the liquid-blocking plate 21, and the bottom of the first gear disc 22 is rotatably connected to an annular positioning frame 24, and the top of the annular positioning frame 24 is rotatably connected to a second gear disc 25 and a third gear disc 26 in a circular distribution.

[0045] The stirring assembly also includes a stirring plate group 27, which is fixedly connected to the bottom of the second gear plate 25 and the third gear plate 26. The bottom of the annular positioning frame 24 is fixedly connected to an L-shaped connecting rod 28, and the end of the L-shaped connecting rod 28 away from the annular positioning frame 24 is fixedly connected to an arc-shaped sliding bar 29.

[0046] The output shaft of the driving device 23 is fixedly connected to the annular positioning frame 24, the first gear plate 22 is meshed with the second gear plate 25, and the second gear plate 25 is meshed with the third gear plate 26, so that the first gear plate 22 can drive the second gear plate 25 and the third gear plate 26 to rotate.

[0047] The cooling component includes a square shell 31, which is fixedly connected to the top of the extraction tank cover 12. A pressure relief port 32 is provided at the bottom of the extraction tank cover 12. An electric control valve 33 is slidably connected inside the pressure relief port 32. A positioning block 34 is fixedly connected inside the square shell 31. A temperature controller 39 is fixedly connected to the bottom of the annular positioning frame 24.

[0048] The cooling component also includes a sealing ring 35, which is fixedly connected to the top of the positioning block 34. A hollow tube 36 is fixedly connected to the inner side of the sealing ring 35. The hollow tube 36 has an air inlet 37, and an air blocking block 38 is fixedly connected to the inside of the hollow tube 36.

[0049] The temperature controller 39 can detect the temperature. When the temperature exceeds the upper temperature limit set by the temperature controller 39 , the temperature controller 39 controls the electric control valve 33 to open by outputting an electrical signal.

[0050] The square shell 31 and the positioning block 34 are both connected to the pressure discharge port 32, so that the airflow inside the extraction tank body 11 can flow into the interior of the positioning block 34. The temperature controller 39 can electrically control the electric control valve 33, so that the switch of the electric control valve 33 can be controlled under high temperature conditions inside the extraction tank body 11. The air inlet 37 is obliquely opened inside the hollow tube 36, so that the airflow flowing into the hollow tube 36 is spiral.

[0051] Embodiment 2:

[0052] A method for preparing a plant small molecule extract comprises the following steps:

[0053] Step 1: Put the material to be extracted into the extraction tank through the feed port, then add an appropriate amount of solvent into the extraction tank according to the process formula, and check the sealing of the equipment, including the pipe connection, valve, and tank body, to ensure there is no leakage;

[0054] Step 2: Start the heating device to heat the material and solvent in the extraction tank to the set temperature, and turn on the stirring device to fully mix the material and solvent to promote the extraction process. At the same time, the heating temperature and heating speed need to be strictly controlled to avoid excessive temperature or too fast heating, which may lead to material decomposition, too fast solvent evaporation or dangerous reactions;

[0055] Step 3: Maintain the set temperature and stirring conditions to allow the material to undergo a full extraction reaction in the solvent. After the extraction reaction is completed, stop heating and stirring;

[0056] Step 4: discharging the extracted solution or the separated product through the discharge port;

[0057] Step 5: After the discharge is completed, clean the extraction tank with clean water or appropriate cleaning agent to prepare for the next extraction operation.

[0058] Working principle: During the operation of the extraction tank body 11, the staff first needs to start the driving device 23, and then the driving device 23 drives the annular positioning frame 24 to rotate. Since the first gear plate 22 is meshed with the second gear plate 25, and the second gear plate 25 is meshed with the third gear plate 26, the annular positioning frame 24 will drive the second gear plate 25 on the top to mesh with the first gear plate 22 during the rotation process. After the second gear plate 25 is meshed and rotated with the first gear plate 22, the second gear plate 25 will mesh with the third gear plate 26.

[0059] During the rotation of the annular positioning frame 24, the second gear plate 25 and the third gear plate 26 will synchronously drive the stirring plate group 27 at the bottom to revolve around the first gear plate 22, and because the second gear plate 25 and the third gear plate 26 are meshed, the second gear plate 25 and the third gear plate 26 will drive the stirring plate group 27 at the bottom to complete the rotation during the revolution around the first gear plate 22, so that the stirring plate group 27 can cover a wider area at the bottom of the inner cavity of the extraction tank body 11, so that the material is stirred more evenly and fully, and the stirring effect is improved. At the same time, the combination of revolution and rotation can effectively reduce the stirring dead angle existing in the traditional stirring method, ensuring that the material at the bottom can be fully stirred, and more uniform stirring helps to promote contact and reaction between materials;

[0060] At the same time, when the first gear plate 22 drives the annular positioning frame 24 to rotate through the second gear plate 25 and the third gear plate 26, the annular positioning frame 24 will drive the arc-shaped slide bar 29 to slide around the inner wall of the extraction tank body 11 through the L-shaped connecting rod 28, so that when the stirring plate group 27 extracts the material inside the extraction tank body 11, the arc-shaped slide bar 29 synchronously scrapes the residual material on the inner wall of the extraction tank body 11. The arc-shaped slide bar 29 is set to an arc shape to better fit the inner wall curve of the extraction tank 11, increase the scraping area, and improve the scraping effect, reduce the scraping dead angle, and the arc-shaped design reduces the resistance between the scraper and the tank wall, making the scraping action smoother, reducing jams and obstructions, avoiding the material from adhering to the inner wall of the extraction tank body 11 during the extraction process, reducing material residue and waste, and helping to keep the inner wall of the extraction tank body 11 clean and reduce the accumulation of dirt and impurities.

[0061] During the process of extracting substances from the extraction tank body 11, a large amount of heat energy is generated at the top of the inner cavity of the extraction tank body 11 due to high-temperature distillation, resulting in an increase in the pressure inside the tank. When the pressure exceeds a certain limit, it is necessary to discharge high-temperature gas to reduce the pressure inside the tank.

[0062] When the temperature and pressure in the tank are too high, the temperature controller 39 can electrically control the electric control valve 33. At this time, the temperature controller 39 detects that the temperature and pressure in the tank are too high and controls the electric control valve 33 to open with the help of the controller. At this time, the high-temperature gas inside the extraction tank body 11 will first flow into the pressure relief port 32 through the electric control valve 33. Since the square shell 31 and the positioning block 34 are both connected to the pressure relief port 32, the high-temperature gas will flow into the positioning block 34 along the bottom of the square shell 31.

[0063] Since the air inlet 37 is obliquely opened inside the hollow tube 36, the high-temperature airflow flowing at high speed inside the positioning block 34 will first flow into the hollow tube 36 along the air inlet 37 in a spiral shape, and part of the high-temperature airflow in the flow process will decrease in temperature due to the high-speed flow, and then part of the high-temperature airflow with a decreased temperature will flow out along the end of the hollow tube 36 close to the air blocking block 38;

[0064] Most of the high-temperature airflow flows in the opposite spiral direction due to the obstruction of the air blocking block 38, and then most of the high-temperature airflow flows out along the end of the hollow tube 36 away from the air blocking block 38, thereby achieving the purpose of cooling the high-temperature gas discharged from the extraction tank body 11, reducing the risk of safety hazards such as burns caused by the high-temperature airflow to personnel and the surrounding environment, and avoiding thermal damage to surrounding connected equipment and pipelines caused by direct discharge of high-temperature airflow.

[0065] For those skilled in the art, although several embodiments and examples of the present invention are described, these embodiments and examples are presented as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and changes can be made without departing from the scope of the subject matter of the invention. These embodiments and their variations are included in the scope and subject matter of the invention, and are included in the invention described in the claims and the scope of their equivalents.

[0066] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A preparation device for plant small molecule extracts, comprising an extraction tank body (11) and an extraction tank cover (12), wherein the extraction tank cover (12) is snap-connected to the top of the extraction tank body (11), characterized in that: The bottom of the extraction tank cover (12) is provided with a stirring component for stirring the material inside the extraction tank body (11), and the top of the extraction tank cover (12) is provided with a cooling component for cooling the discharged gas.

2. The device for preparing a plant small molecule extract according to claim 1, characterized in that: The stirring assembly comprises a liquid blocking plate (21), the liquid blocking plate (21) is fixedly connected to the bottom of the extraction tank cover (12), the bottom of the liquid blocking plate (21) is fixedly connected to a first gear plate (22), the bottom of the liquid blocking plate (21) is equipped with a driving device (23), the bottom of the first gear plate (22) is rotatably connected to an annular positioning frame (24), and the top of the annular positioning frame (24) is rotatably connected to a second gear plate (25) and a third gear plate (26) in an annular distribution.

3. The preparation device of a plant small molecule extract according to claim 2, characterized in that: The stirring assembly also includes a stirring plate group (27), the stirring plate group (27) is fixedly connected to the bottom of the second gear plate (25) and the third gear plate (26), the bottom of the annular positioning frame (24) is fixedly connected to an L-shaped connecting rod (28), and one end of the L-shaped connecting rod (28) away from the annular positioning frame (24) is fixedly connected to an arc-shaped sliding bar (29).

4. The device for preparing a plant small molecule extract according to claim 2, characterized in that: The cooling component comprises a square shell (31), the square shell (31) is fixedly connected to the top of the extraction tank cover (12), the bottom of the extraction tank cover (12) is provided with a pressure discharge port (32), the interior of the pressure discharge port (32) is slidably connected to an electric control valve (33), the interior of the square shell (31) is fixedly connected to a positioning block (34), and the bottom of the annular positioning frame (24) is fixedly connected to a temperature controller (39).

5. The device for preparing a plant small molecule extract according to claim 4, characterized in that: The cooling component also includes a sealing ring (35), the sealing ring (35) is fixedly connected to the top of the positioning block (34), the inner side of the sealing ring (35) is fixedly connected to a hollow tube (36), the hollow tube (36) is provided with an air inlet hole (37), and the interior of the hollow tube (36) is fixedly connected to an air blocking block (38).

6. The device for preparing a plant small molecule extract according to claim 3, characterized in that: The output shaft of the driving device (23) is fixedly connected to the annular positioning frame (24); the first gear plate (22) is meshed with the second gear plate (25); and the second gear plate (25) is meshed with the third gear plate (26).

7. The device for preparing a plant small molecule extract according to claim 5, characterized in that: The square shell (31) and the positioning block (34) are both connected to the pressure discharge port (32), the temperature controller (39) can electrically control the electric control valve (33), and the air inlet (37) is obliquely opened inside the hollow tube (36).

8. A method for preparing a plant small molecule extract, the method being based on the preparation device of the plant small molecule extract according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: Put the material to be extracted into the extraction tank through the feed port, and then add an appropriate amount of solvent into the extraction tank according to the process formula; Step 2: Start the heating device to heat the material and solvent in the extraction tank to the set temperature, and start the stirring device at the same time to fully mix the material and solvent to promote the extraction process; Step 3: Maintain the set temperature and stirring conditions to allow the material to undergo a full extraction reaction in the solvent. After the extraction reaction is completed, stop heating and stirring; Step 4: discharging the extracted solution or the separated product through the discharge port; Step 5: After the discharge is completed, clean the extraction tank with clean water or appropriate cleaning agent to prepare for the next extraction operation.

9. The method for preparing a plant small molecule extract according to claim 8, characterized in that: During the working process of step 1, it is necessary to check the sealing of the equipment, including the pipeline joints, valves, and tanks to ensure that there are no leaks.

10. The method for preparing a plant small molecule extract according to claim 8, characterized in that: In the step 2, the heating temperature and heating rate need to be strictly controlled to avoid excessively high temperature or too fast heating that may lead to material decomposition, excessive evaporation of the solvent, or dangerous reactions.

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