Magnolia officinalis total phenol extract extraction equipment and extraction method thereof

Abstract

The invention belongs to the technical field of extraction equipment, and discloses magnolia officinalis total phenol extract extraction equipment and an extraction method thereof.The magnolia officinalis total phenol extract extraction equipment comprises an extraction kettle provided with a sealing cover; the discharge pipe is connected to the bottom of the extraction kettle and is used for conveying the extracted raw materials; the conveying pipe is arranged on one side of the discharging pipe and is used for conveying CO2 to react with the raw materials; the driving assembly is arranged at the top of the sealing cover, the driving assembly is connected with a stirring adjusting mechanism and used for stirring the raw materials, and the stirring adjusting assembly comprises a stirring structure arranged in the extraction kettle. Raw materials are stirred through a first stirring rod and a second stirring rod, local accumulation of the raw materials in the extraction kettle due to one-time feeding of the raw materials is prevented, then the raw materials are flattened through a flattening structure, the surfaces of the raw materials are smooth, CO2 can stably flow through and permeate, the raw materials are fully combined, the extraction efficiency is improved, and total phenols are conveniently extracted; and the quality and yield of final products are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of extraction equipment, and particularly relates to a total phenol extract of magnolia officinalis extraction equipment and a total phenol extract of magnolia officinalis extraction method. BACKGROUND

[0002] The total phenol extract of magnolia officinalis is a phenolic compound extracted from the magnolia officinalis plant and has multiple biological activities such as antibacterial, anti-inflammatory and antioxidant activities. The total phenol extract of magnolia officinalis extracted by the extraction equipment and added in the fish veterinary drug can prevent and treat intestinal infections and respiratory infections of aquatic animals, relieve inflammation of the animals, improve the production performance and health status of the aquatic animals, and improve the production performance.

[0003] In the prior art, the raw material needs to be added into a supercritical CO2 extraction kettle for extraction. When the raw material is quickly poured and locally accumulated and compacted in the extraction kettle, the supercritical CO2 is difficult to penetrate, the extraction efficiency is reduced, the total phenol extraction is incomplete, and the quality and yield of the final product are affected. SUMMARY

[0004] The application proposes the following technical scheme in view of the problems in the prior art: a total phenol extract of magnolia officinalis extraction equipment, comprising an extraction kettle provided with a sealing cover;

[0005] A discharge pipe is connected to the bottom of the extraction kettle and used for conveying the extracted raw material;

[0006] A conveying pipe is arranged on one side of the discharge pipe and used for conveying CO2 to react with the raw material;

[0007] A driving assembly is arranged on the top of the sealing cover, the driving assembly is connected with a stirring adjusting mechanism, and the stirring adjusting mechanism is used for stirring the raw material. The stirring adjusting assembly comprises:

[0008] A stirring structure is arranged in the extraction kettle;

[0009] A flattening structure is arranged on the stirring structure.

[0010] As a preferred form of the above technical scheme, the stirring structure comprises:

[0011] A stirring shaft is arranged in the extraction kettle;

[0012] A first stirring rod and a second stirring rod are both connected to the outer side of the stirring shaft, the number of the first stirring rods is two, and the second stirring rods are linearly arranged at the bottom of the first stirring rods;

[0013] A knocking piece is arranged on the stirring shaft and used for knocking the inner wall of the extraction kettle.

[0014] As a preferred form of the above technical scheme, the flattening structure comprises:

[0015] An installation groove is arranged at the top end of the stirring shaft.

[0016] A connecting rod is located inside the mounting slot, and the connecting rod is connected to the first gear;

[0017] The movable block is located inside the first stirring rod;

[0018] A movable structure is provided between the first gear and the movable block to drive the movable block to move.

[0019] As a preferred embodiment of the above technical solution, the interior of the first stirring rod is connected to the mounting groove, the bottom of the moving block is slidably connected to the inner wall of the first stirring rod, and there are two sets of both the moving block and the moving structure, which are symmetrically arranged with respect to the center of the stirring shaft.

[0020] As a preferred embodiment of the above technical solution, the moving structure includes:

[0021] The second gear meshes with one side of the first gear;

[0022] A threaded rod is connected to the middle of the second gear, and a fixed block is rotatably connected to the end of the threaded rod away from the second gear;

[0023] The threaded block is threadedly connected to the threaded rod. The bottom of the threaded block is slidably connected to the inner wall of the second stirring rod. The threaded block is connected to the movable block through the movable rod.

[0024] As a preferred embodiment of the above technical solution, one end of the threaded rod extends into the interior of the movable block, the bottom of the fixed block is slidably connected to the inner wall of the movable block, the end of the threaded rod near the fixed block is provided with a threadless section, the bottom of the movable block is provided with a limiting member, and one side of the fixed block and one side of the threaded block are magnetically engaged.

[0025] As a preferred embodiment of the above technical solution, the top of the sealing cover is provided with an inlet, and the bottom of the sealing cover is provided with a sealing assembly, the sealing assembly including:

[0026] The first driving component is connected inside the sealing cover;

[0027] A rotating rod is connected to the bottom of the first driving component, and a mounting plate is rotatably connected to one end of the rotating rod;

[0028] The sealing plate, connected to the bottom of the rotating rod via a connecting plate, is used to block the feed inlet;

[0029] The striking structure, located on one side of the sealing plate, is used to strike the inner wall of the extraction vessel.

[0030] As a preferred embodiment of the above technical solution, the striking structure includes:

[0031] Mounting block, connected to the bottom of the sealing cover;

[0032] A fixing rod is movably connected to the mounting block. One end of the fixing rod is magnetically engaged with the sealing plate, and the other end of the fixing rod is connected to the inner wall of the sealing cover through an elastic element.

[0033] The striking block, attached to the bottom of the fixed rod, is used to strike the inner wall of the extraction vessel.

[0034] As a preferred embodiment of the above technical solution, the mounting block and the fixing rod are located at the end of the sealing plate away from the connecting plate, the fixing rod is L-shaped, and the striking block is located at the top inside the extraction vessel. The striking block is made of rubber.

[0035] The present invention also provides an extraction method using the above-mentioned Magnolia officinalis total phenolic extract extraction equipment, comprising the following steps:

[0036] Step 1: Crush the Magnolia officinalis plant material and put it into the extraction vessel of the supercritical CO2 extraction equipment. The raw material is fed intermittently through the sealing structure and the inner wall of the extraction vessel is tapped by the tapping structure to make the raw material evenly distributed. Then, the drive component is started to stir and mix the raw material through the stirring structure and the spreading structure to spread the raw material evenly in the extraction vessel.

[0037] Step 2: Supercritical CO2 is then introduced into the extraction vessel through the delivery pipe, and the pressure in the extraction vessel is controlled at 20-35 MPa and the temperature at 30℃-50℃ to obtain the extract material;

[0038] Step 3: Pass the extract into a distillation column. The pressure of the distillation column is 15-18 MPa, and the temperature is divided into three sections from bottom to top: the lower temperature zone is 35±5℃, the middle temperature zone is 40±5℃, and the upper temperature zone is 45±5℃, to obtain the distillate.

[0039] Step 4: Pass the distillation feed into the primary separator. The pressure in the primary separator is 9-14 MPa and the temperature is 35-55℃. Collect the Magnolia officinalis extract.

[0040] The beneficial effects of this invention are as follows:

[0041] (1) The present invention uses a first stirring rod and a second stirring rod to stir the raw material, preventing the raw material from being locally accumulated in the extraction vessel when it is fed at one time. Then, the raw material is flattened by using a flattening structure, so that the surface of the raw material is flat, CO2 can flow through and penetrate smoothly, and fully structure with the raw material, thereby improving the extraction efficiency, facilitating the extraction of total phenols, and improving the quality and yield of the final product.

[0042] (2) The present invention enables the raw materials to be fed intermittently through the sealing structure, avoiding the instantaneous accumulation of raw materials and ensuring uniform distribution. Furthermore, the raw materials are fed smoothly by tapping the inner wall of the extraction vessel through the tapping structure, avoiding the formation of local voids or local compaction, maintaining the loose state of the raw materials, further improving the extraction effect, and making it easy to use. Attached Figure Description

[0043] Figure 1 The diagram shown is a schematic representation of the overall structure of the embodiment;

[0044] Figure 2 The diagram shown is a cross-sectional view of the extraction vessel of the embodiment;

[0045] Figure 3 The diagram shown is a cross-sectional view of the stirring shaft, the first stirring rod, and the second stirring rod of the embodiment.

[0046] Figure 4 The diagram shown is a structural diagram of the moving block and moving structure in the embodiment;

[0047] Figure 5 The diagram shown is a structural diagram of the sealing cap and sealing structure of the embodiment;

[0048] Figure 6 The diagram shown is a structural diagram of the sealing structure and the striking structure of the embodiment;

[0049] Figure 7 The diagram shown is a structural diagram of the striking component in the embodiment;

[0050] Figure 8 The image shown is a physical illustration of an embodiment.

[0051] In the diagram: 1. Extraction vessel; 2. Sealing cap; 3. Discharge pipe; 4. Conveying pipe; 5. Stirring shaft; 6. First stirring rod; 7. Second stirring rod; 8. Second driving component; 9. Third driving component; 10. Connecting rod; 11. First gear; 12. Moving block; 13. Second gear; 14. Threaded rod; 15. Fixed block; 16. Threaded block; 17. Movable rod; 18. Limiting component; 19. Inlet; 20. First electromagnet; 21. Metal block; 22. First driving component; 23. Rotating rod; 24. Sealing plate; 25. Connecting plate; 26. Fixed rod; 27. Elastic component; 28. Magnetic block; 29. ​​Striking block; 30. Rotating block; 31. Striking ball; 32. Connecting spring. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0053] This invention provides an extraction device for total phenolic extracts from Magnolia officinalis, such as... Figure 1 , Figure 2 , Figure 3 and Figure 7As shown, the extraction vessel includes an extraction vessel 1, a sealing cap 2, a discharge pipe 3, a conveying pipe 4, a drive assembly, and a stirring and adjusting mechanism. The sealing cap 2 is located on the top of the extraction vessel 1. The discharge pipe 3 is fixedly connected to the bottom of the extraction vessel 1 for conveying the extracted raw material. The conveying pipe 4 is fixedly connected to the bottom of the extraction vessel 1 and is located on one side of the discharge pipe 3 for conveying CO2 to react with the raw material. The drive assembly is located on top of the sealing cap 2 and is connected to the stirring and adjusting mechanism. The drive assembly drives the stirring and adjusting mechanism to rotate, thus stirring the raw material. The stirring and adjusting assembly includes a stirring structure and a leveling structure. The stirring structure is located on the extraction vessel 1. Inside, the raw materials are stirred to disperse them evenly. To prevent the raw materials from accumulating or clumping, the stirring structure includes a stirring shaft 5, a first stirring rod 6, and a second stirring rod 7. The stirring shaft 5 is located inside the extraction vessel 1, and its top is fixedly connected to the bottom of the third drive component 9. The first stirring rod 6 and the second stirring rod 7 are both fixedly connected to the outside of the stirring shaft 5. There are two first stirring rods 6, and the second stirring rods 7 are located at the bottom of the first stirring rods 6 and are arranged in a linear array. A striking component is provided on the stirring shaft 5 to strike the inner wall of the extraction vessel 1. A leveling structure is provided on the stirring structure to level the raw materials.

[0054] The drive structure includes a second drive component 8, a third drive component 9, and a mounting bracket. The mounting bracket is fixedly connected to the top of the sealing cover 2. The second drive component 8 is fixedly installed on the top of the mounting bracket. The output end of the second drive component 8 is fixedly connected to the third drive component 9. One end of the third drive component 9 extends through the top of the sealing cover 2 into the extraction vessel 1.

[0055] The striking component includes a moving rod, a rotating block 30, a striking ball 31, and a connecting spring 32. One end of the moving rod is fixedly connected to the bottom of the stirring shaft 5, and the other end is fixedly connected to the rotating block 30. Both ends of the rotating block 30 are provided with grooves, and the connecting spring 32 is fixedly connected in the grooves. One end of the connecting spring 32 is fixedly connected to the striking ball 31. The striking ball 31 is located on both sides of the rotating block 30, and the striking ball 30 is in contact with the inner wall of the extraction vessel 1.

[0056] In this real-time example, the second drive component 8 can be a motor, and the third drive component 9 can be an electric push rod. When the raw material is added into the extraction vessel 1, the second drive component 8 is activated to drive the third drive component 9, the stirring shaft 5, the first stirring rod 6, and the second stirring rod 7 to rotate. This allows the two first stirring rods 6 and the multiple linearly arrayed second stirring rods 7 to fully mix and stir the raw material evenly, keeping it in a loose state. Then, the third drive component 9 is activated to contract and drive the rotating shaft upward, causing the first stirring rods 6 and the second stirring rods 7 to move upward simultaneously. This moves the two first stirring rods 6 above the raw material. Then, the leveling structure inside the first stirring rod 6 is activated. As the second drive component 8 drives the third drive component 9 and the stirring structure to rotate, the leveling structure flattens the top surface of the raw material, making the surface of the raw material smooth and ensuring that the raw material is evenly distributed in the extraction vessel 1. This allows CO2 to flow smoothly and penetrate, mixing thoroughly with the raw material, improving extraction efficiency, facilitating the extraction of total phenols, and improving the quality and yield of the final product.

[0057] When the stirring shaft 5 rotates, it drives the bottom moving rod and rotating block 30 to rotate synchronously. At the same time, the striking balls 31 on both sides of the rotating block 30 are in contact with the inner wall of the bottom of the vessel, and the connecting spring 32 is in a compressed state. During the rotation, they are subjected to the friction and reaction force of the vessel wall. When the rotating block 30 rotates with the stirring shaft 5, the centrifugal force during the rotation will cause the striking balls 31 to tend to expand outward. The constraint of the vessel wall will cause the connecting spring 32 to continuously accumulate elastic potential energy. When the stirring shaft speed changes, the change in centrifugal force will cause the striking balls 31 to generate an instantaneous impact force with the vessel wall, forming periodic knocking. This will transmit the vibration generated by the striking balls to the material accumulated at the bottom of the vessel, enhancing the vibration uniformity effect.

[0058] like Figures 3 to 4As shown, in order to keep the top surface of the raw material flat, ensure uniform distribution of the raw material, improve the mixing effect of CO2 and raw material, and avoid blind spots in extraction, the flattening structure includes an installation groove, a connecting rod 10, a first gear 11, a moving block 12, and a moving structure. The installation groove is located at the top of the stirring shaft 5, and the connecting rod 10 is located inside the installation groove. The top of the connecting rod 10 is fixedly installed to the bottom of the third drive component 9, and the bottom of the connecting rod 10 is fixedly connected to the first gear 11. The moving block 12 is located inside the first stirring rod 6, and the moving structure is located between the first gear 11 and the moving block 12 to push the moving block 12 to move. The interior of the first stirring rod 6 communicates with the installation groove, and the bottom of the moving block 12 is slidably connected to the inner wall of the first stirring rod 6, so that the moving structure can push the moving block when the first gear 11 rotates. The moving block 12 and the moving structure are both in two sets, and they are symmetrically arranged around the center of the stirring shaft 5. When the two first stirring rods 6 rotate at the same time, one end of the moving block 12 can move to the inner wall of the extraction vessel 1, which facilitates the leveling effect of the raw materials. The moving structure includes a second gear 13, a threaded rod 14, a fixed block 15, a threaded block 16 and a movable rod 17. The second gear 13 meshes with one side of the first gear 11. The threaded rod 14 is fixedly connected to the middle of the second gear 13. The fixed block 15 is rotatably connected to the end of the threaded rod 14 away from the second gear 13. The threaded block 16 is threadedly connected to the threaded rod 14. The bottom of the threaded block 16 is slidably connected to the inner wall of the second stirring rod 7. The movable rod 17 is fixedly connected to one side of the threaded block 16. One end of the movable rod 17 is fixedly connected to the moving block 12.

[0059] When the second driving component 8 drives the third driving component 9 to rotate, the stirring shaft 5 drives the first stirring rod 6 and the second stirring rod 7 to rotate, mixing the raw materials. Simultaneously, the rotation of the first stirring rod 6 and the second stirring rod 7 drives the connecting rod 10 and the first gear 11 to rotate, causing the first gear 11 to drive the second gear 13 to rotate, which in turn drives the threaded rod 14 to rotate. Because the bottom of the threaded block 16 is slidably connected to the inner wall of the first stirring rod 6, the threaded block 16 can move along the threaded rod 14 towards the fixed block 15, and is pushed by the movable rod 17. The moving block 12 moves outward from the first stirring rod 6. When the stirring shaft 5 rotates, it drives the first stirring rod 6, the moving block 12, and the second stirring rod 7 to rotate simultaneously, stirring the raw materials. After the raw materials are stirred, the third driving component 9 is activated to drive the stirring shaft 5 to move upward, so that the first stirring rod 6 and the moving block 12 move above the raw materials. When the second driving component 8 rotates, it can drive the first stirring rod 6, the second stirring rod 7, and the moving block 12 to rotate simultaneously, so that the moving block 12 and the first stirring rod 6 can be above the raw materials, spreading the raw materials evenly, thereby improving the mixing effect of subsequent raw materials.

[0060] like Figures 3 to 4As shown, one end of the threaded rod 14 extends into the interior of the moving block 12. The bottom of the fixed block 15 is slidably connected to the inner wall of the moving block 12. The threaded rod 14 has a threadless section near the fixed block 15. A limiting member 18 is fixedly connected to the bottom of the moving block 12. A groove is opened on the inner wall of the bottom of the second stirring rod 7. The limiting member 18 is slidably connected to the groove to prevent the moving block 12 from moving completely to the outside of the first stirring rod 6. An electromagnet 20 is fixedly installed on one side of the fixed block 15. A metal block 21 is fixedly connected to the side of the threaded block 16 away from the second gear 13. The threaded rod 14 is located in the middle of the electromagnet 20 and the metal block 21. The electromagnet 20 and the metal block 21 are magnetically connected.

[0061] When the threaded block 16 moves to the threaded rod 14 and approaches the unthreaded section, the electromagnet 20 is energized, attracting the metal block 21. This causes the threaded block 16 to move to the unthreaded section of the threaded rod 14. The electromagnet 20 adheres to the metal block 21, and under the action of the movable rod 17, the moving block 12 is pushed to move the limiting member 18 along the slide groove to the outside of the first stirring rod 6. This causes the end of the moving block 12 away from the first stirring rod 6 to be located on the inner wall of the extraction vessel 1. The threaded block 16 stops moving, while the threaded rod 14, the second gear 13, the first gear 11, the connecting rod 10, and the stirring shaft 5 continue to rotate. Therefore, when the stirring shaft 5 drives the first stirring rod 6 and the second stirring rod 7 to rotate, the moving block 12 and the first stirring rod 6 can be flattened above the raw material, preventing the raw material from accumulating and making it difficult to mix with CO2, thus affecting the extraction effect.

[0062] After the raw materials are spread out, the electromagnet 20 is de-energized, causing the magnetic attraction between the electromagnet 20 and the metal block 21 to disappear, releasing the fixation on the threaded block 16. Since the threaded rod 14 still rotates synchronously with the stirring shaft 5, when the threaded block 16 loses the attraction constraint of the electromagnet 20, it is in the unthreaded section of the threaded rod 14. Due to the lack of thread engagement constraint, and because the threaded block 16 is connected to the moving block 12 through the movable rod 17, and the moving block 12 is slidably connected to the groove of the second stirring rod 7 through the limiting member 18, restricting the rotational freedom of the threaded block 16, it can only move axially and cannot rotate synchronously with the threaded rod. Therefore, after the electromagnet 20 is de-energized and loses its attraction force on the metal block 21, As the threaded rod 14 continues to rotate, the threaded block 16 will re-engage with the thread of the threaded rod 14 because it cannot rotate on its own. Since the rotation direction of the threaded rod 14 has not changed, the helical thrust of the thread will drive the threaded block 16 to move in the opposite direction along the axial direction, sliding from the unthreaded section back to the threaded section. When the threaded block 16 moves back on the threaded rod 14, the movable block 12 is pulled towards the first stirring rod 6 by the movable rod 17. At the same time, the limiting member 18 slides in the opposite direction along the groove at the bottom of the second stirring rod 7, so that the movable block 12 is retracted into the first stirring rod 6. When the threaded block 16 has completely returned to the threaded section of the threaded rod 14, the limiting member 18 in the groove keeps the movable block 12 stable.

[0063] like Figure 2 , Figure 5 As shown, in order to allow the raw materials to enter the interior of the extraction vessel 1 intermittently and avoid instantaneous accumulation of raw materials, resulting in uneven distribution of raw materials, the top of the sealing cover 2 is provided with an inlet 19, and the bottom of the sealing cover 2 is provided with a sealing assembly. The sealing assembly includes a first driving component 22, a rotating rod 23, a mounting plate, a sealing plate 24, a connecting plate 25, and a striking structure. The first driving component 22 is fixedly connected to the inside of the sealing cover 2, the rotating rod 23 is fixedly connected to the bottom of the first driving component 22, one end of the rotating rod 23 is rotatably connected to the mounting plate, and one end of the mounting plate is fixedly installed to the bottom of the sealing cover 2. The sealing plate 24 is fixedly connected to one side of the connecting plate 25, and one end of the connecting plate 25 is fixedly connected to the bottom end of the rotating rod 23 for sealing the inlet 19. The striking structure is provided on one side of the sealing plate 24 for striking the inner wall of the extraction vessel 1.

[0064] In this embodiment, the first driving component 22 can be a motor. The raw material is poured into the feed inlet 19. By starting the first driving component 22, the rotating rod 23 and the connecting plate 25 are driven to rotate, so that the sealing plate 24 rotates away from the bottom of the sealing cover 2 and away from the bottom of the feed inlet 19, allowing the raw material to enter the inner wall of the extraction vessel 1. The rotation of the sealing plate 24 blocks and opens the feed inlet 19, controlling the intermittent entry of the raw material. When the sealing plate 24 rotates, it can also drive the knocking structure to move, so that the knocking structure knocks on the inner wall of the extraction vessel 1, so that the raw material entering the extraction vessel 1 falls smoothly and is evenly distributed, without causing local accumulation or void movement, which facilitates subsequent processing.

[0065] like Figures 5 to 6 As shown, the striking structure includes a mounting block, a fixing rod 26, an elastic element 27, a magnetic block 28, an elastic element 27, a fixing rod 26, and a striking block 29. The mounting block is fixedly connected to the bottom of the sealing cover 2, and the fixing rod 26 is movably connected to the mounting block. The mounting block facilitates the support and limitation of the fixing rod 26, allowing the fixing rod 26 to move at the bottom of the sealing cover 2. One end of the fixing rod 26 and one side of the sealing plate 24 are connected to magnetic blocks 28, which are magnetically attracted to each other. The other end of the fixing rod 26 is connected to the inner wall of the sealing cover 2 through the elastic element 27. The striking block 29 is fixedly connected to the bottom of the fixing rod 26 and is used to strike the inner wall of the extraction vessel 1. The mounting block and the fixing rod 26 are located at the end of the sealing plate 24 away from the connecting plate 25. The fixing rod 26 is L-shaped, and the striking block 29 is located at the top inside the extraction vessel 1. The striking block 29 is made of rubber.

[0066] In this embodiment, the elastic element 27 can be a compression spring. When the sealing plate 24 rotates, it drives the magnetic block 28 to move and separates from the magnetic block 28 at one end of the fixed rod 26, no longer attracting it. The magnetic force decreases as the distance increases. When the magnetic force is less than the elastic potential energy of the elastic element 27, the elastic element 27 can drive the fixed rod 26 to move, thereby causing the elastic element 27 to push the fixed rod 26 towards the inner wall of the extraction vessel 1, so that the striking block 29 strikes the inner wall of the extraction vessel 1, thereby generating vibration to loosen and slip the raw material, preventing the raw material from remaining on the inner wall of the extraction vessel 1, allowing the raw material to be evenly spread in the vessel, and reducing the extraction blind zone caused by local accumulation.

[0067] The present invention also provides an extraction method using the above-mentioned Magnolia officinalis total phenolic extract extraction equipment, comprising the following steps:

[0068] Step 1: Crush the Magnolia officinalis plant material and put it into the extraction vessel 1 of the supercritical CO2 extraction equipment. The raw material is fed intermittently through the sealing structure. At the same time, the inner wall of the extraction vessel 1 is tapped by the tapping structure to make the raw material evenly distributed. Then, the drive component is started to stir and mix the raw material through the stirring structure and the spreading structure to spread the raw material evenly in the extraction vessel 1.

[0069] Step 2: Then, introduce supercritical CO2 into extraction vessel 1 through the conveying pipe 4, and control the pressure of extraction vessel 1 to be 20-35 MPa and the temperature to be 30℃-50℃ to obtain the extract material;

[0070] Step 3: Pass the extract into a distillation column. The pressure of the distillation column is 15-18 MPa, and the temperature is divided into three sections from bottom to top: the lower temperature zone is 35±5℃, the middle temperature zone is 40±5℃, and the upper temperature zone is 45±5℃, to obtain the distillate.

[0071] Step 4: Pass the distillation feed into the primary separator. The pressure in the primary separator is 9-14 MPa and the temperature is 35-55℃. Collect the Magnolia officinalis extract.

[0072] Working principle: When in use, the raw material is poured into the feed inlet 19. The first driving component 22 is activated to drive the rotating rod 23 and the connecting plate 25 to rotate, so that the sealing plate 24 rotates away from the bottom of the sealing cover 2 and away from the bottom of the feed inlet 19. The raw material can enter the inner wall of the extraction vessel 1. The rotating sealing plate 24 blocks and opens the feed inlet 19, controlling the gap of the raw material entering. When the sealing plate 24 rotates, it drives the magnetic block 28 to move. The magnetic block 28 connected to the fixed rod 26 separates and no longer attracts. The magnetic force decreases with the increase of distance. When the magnetic force is less than the elastic potential energy of the elastic component 27, the elastic component 27 can drive the fixed rod 26 to move, so that the elastic component 27 pushes the fixed rod 26 towards the inner wall of the extraction vessel 1, so that the striking block 29 strikes the inner wall of the extraction vessel 1, thereby generating vibration, causing the raw material to loosen and slide down and be evenly distributed.

[0073] After the raw material is added to the extraction vessel 1, the second driving component 8 is activated, driving the third driving component 9, the stirring shaft 5, the first stirring rod 6, and the second stirring rod 7 to rotate. When the second driving component 8 drives the third driving component 9 to rotate, the stirring shaft 5 drives the first stirring rod 6 and the second stirring rod 7 to rotate. At the same time, the rotation of the stirring shaft 5 drives the connecting rod 10 and the first gear 11 to rotate, causing the first gear 11 to drive the second gear 13 to rotate, which in turn drives the threaded rod 14 to rotate. Since the bottom of the threaded block 16 is slidably connected to the inner wall of the first stirring rod 6, the threaded block 16 can move along the threaded rod 14 towards the fixed block 15. When the threaded block 16 moves to the point where it is close to the unthreaded section of the threaded rod 14, the electromagnet 20 is energized, attracting the metal block 21, which in turn drives the threaded block 16 to move to the unthreaded section of the threaded rod 14. Adhesive and adhered to the metal block 21, the movable block 12 is pushed by the movable rod 17 to move the limiting part 18 along the slide groove to the outer side of the bottom of the first stirring rod 6. The end of the moving block 12 is located away from the first stirring rod 6 and is at the inner wall of the extraction vessel 1. The threaded block 16 no longer moves, while the threaded rod 14, the second gear 13, the first gear 11, the connecting rod 10 and the stirring shaft 5 continue to rotate. The raw materials are fully mixed and stirred evenly by the two first stirring rods 6 and the second stirring rod 7, keeping the raw materials in a loose state. Then the third driving part 9 is activated to retract and drive the stirring shaft 5 to move upward, so that the first stirring rod 6 and the second stirring rod 7 move upward at the same time. Thus, the two first stirring rods 6 are moved above the raw materials. Therefore, when the driving component drives the stirring shaft 5 to rotate the first stirring rod 6 and the second stirring rod 7, the movable block 12 and the first stirring rod 6 can be flattened above the raw materials.

[0074] When the stirring shaft 5 rotates, it drives the bottom moving rod and rotating block 30 to rotate synchronously. At the same time, the striking balls 31 on both sides of the rotating block 30 are in contact with the inner wall of the bottom of the vessel, and the connecting spring 32 is in a compressed state. During the rotation, they are subjected to the friction and reaction force of the vessel wall. When the rotating block 30 rotates with the stirring shaft 5, the centrifugal force during the rotation will cause the striking balls 31 to tend to expand outward. The constraint of the vessel wall will cause the connecting spring 32 to continuously accumulate elastic potential energy. When the stirring shaft speed changes, the change in centrifugal force will cause the striking balls 31 to generate an instantaneous impact force with the vessel wall, forming periodic knocking. This will transmit the vibration generated by the striking balls to the material accumulated at the bottom of the vessel, enhancing the vibration uniformity effect.

[0075] Supercritical CO2 is introduced into the extraction vessel through a delivery pipe, and the pressure in the extraction vessel is controlled at 20-35 MPa and the temperature at 30℃-50℃ to obtain the extract. The extract is then fed into a distillation column, where the pressure is 15-18 MPa and the temperature is divided into three sections from bottom to top: a lower temperature zone of 35±5℃, a middle temperature zone of 40±5℃, and an upper temperature zone of 45±5℃ to obtain the distillate. Finally, the distillate is fed into a primary separation vessel, where the pressure is 9-14 MPa and the temperature is 35-55℃, to collect the Magnolia officinalis extract.

[0076] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. An extraction device for total phenolic extracts from Magnolia officinalis, characterized in that, include: An extraction vessel (1) is equipped with a sealing cap (2); The discharge pipe (3) is connected to the bottom of the extraction vessel (1) and is used to transport the extracted raw materials; A conveying pipe (4) is provided on one side of the discharge pipe (3) for conveying CO2 to react with the raw materials; A drive assembly is disposed on the top of the sealing cover (2). The drive assembly is connected to a stirring adjustment mechanism for stirring raw materials. The stirring adjustment assembly includes: A stirring structure is provided inside the extraction vessel (1); A flattening structure is provided on the stirring structure.

2. The extraction equipment for total phenolic extract of Magnolia officinalis according to claim 1, characterized in that, The stirring structure includes: A stirring shaft (5) is disposed inside the extraction vessel (1); The first stirring rod (6) and the second stirring rod (7) are both connected to the outside of the stirring shaft (5). There are two first stirring rods (6), and the second stirring rods (7) are located at the bottom of the first stirring rods (6) in a linear array. A striking element is provided on the stirring shaft (5) for striking the inner wall of the extraction vessel (1).

3. The extraction equipment for total phenolic extract of Magnolia officinalis according to claim 2, characterized in that, The leveling structure includes: The mounting groove is provided at the top of the stirring shaft (5); A connecting rod (10) is located inside the mounting groove, and the connecting rod (10) is connected to a first gear (11); The movable block (12) is disposed inside the first stirring rod (6); A movable structure is disposed between the first gear (11) and the movable block (12) for pushing the movable block (12) to move.

4. The extraction equipment for total phenolic extract of Magnolia officinalis according to claim 3, characterized in that, The interior of the first stirring rod (6) is connected to the mounting groove, and the bottom of the moving block (12) is slidably connected to the inner wall of the first stirring rod (6). There are two sets of the moving block (12) and the moving structure, and they are symmetrically arranged with respect to the center of the stirring shaft (5).

5. The extraction equipment for total phenolic extract of Magnolia officinalis according to claim 4, characterized in that, The movable structure includes: The second gear (13) meshes with one side of the first gear (11); A threaded rod (14) is connected to the middle of the second gear (13), and a fixed block (15) is rotatably connected to the end of the threaded rod (14) away from the second gear (13); A threaded block (16) is threadedly connected to the threaded rod (14). The bottom of the threaded block (16) is slidably connected to the inner wall of the second stirring rod (7). The threaded block (16) is connected to the movable block (12) through a movable rod (17).

6. The extraction equipment for total phenolic extract of Magnolia officinalis according to claim 5, characterized in that, One end of the threaded rod (14) extends into the interior of the movable block (12), the bottom of the fixed block (15) is slidably connected to the inner wall of the movable block (12), the threaded rod (14) has a threadless section at one end near the fixed block (15), the bottom of the movable block (12) is provided with a limiting member (18), and one side of the fixed block (15) and one side of the threaded block (16) are magnetically engaged.

7. The extraction equipment for total phenolic extract of Magnolia officinalis according to claim 6, characterized in that, The sealing cap (2) is provided with an inlet (19) at the top and a sealing assembly is provided at the bottom of the sealing cap (2). The sealing assembly includes: The first driving component (22) is connected inside the sealing cover (2); A rotating rod (23) is connected to the bottom of the first driving member (22), and a mounting plate is rotatably connected to one end of the rotating rod (23); A sealing plate (24) is connected to the bottom end of the rotating rod (23) via a connecting plate (25) for sealing the feed inlet (19); A striking structure is provided on one side of the sealing plate (24) for striking the inner wall of the extraction vessel (1).

8. The extraction equipment for total phenolic extract of Magnolia officinalis according to claim 7, characterized in that, The striking structure includes: The mounting block is connected to the bottom of the sealing cover (2); A fixing rod (26) is movably connected to the mounting block. One end of the fixing rod (26) is magnetically engaged with the sealing plate (24), and the other end of the fixing rod (26) is connected to the inner wall of the sealing cover (2) through an elastic element (27). A striking block (29) is attached to the bottom of the fixed rod (26) and is used to strike the inner wall of the extraction vessel (1).

9. The extraction equipment for total phenolic extract of Magnolia officinalis according to claim 8, characterized in that, The mounting block and fixing rod (26) are located at the end of the sealing plate (24) away from the connecting plate (25). The fixing rod (26) is L-shaped. The striking block (29) is located at the top inside the extraction vessel (1). The striking block (29) is made of rubber.

10. An extraction method for a device for extracting total phenolic extracts from Magnolia officinalis, characterized in that, The extraction method uses the extraction equipment for the total phenolic extract of Magnolia officinalis as described in claim 9, and includes the following steps: Step 1: Crush the Magnolia officinalis plant material and put it into the extraction vessel (1) of the supercritical CO2 extraction equipment. The raw material is fed intermittently through the sealing structure. At the same time, the inner wall of the extraction vessel (1) is tapped by the tapping structure to make the raw material evenly distributed. Then, the drive component is started to stir and mix the raw material through the stirring structure. The raw material is spread evenly in the extraction vessel (1) through the flattening structure. Step 2: Then, introduce supercritical CO2 into the extraction vessel (1) through the delivery pipe (4), and control the pressure of the extraction vessel (1) to be 20-35 MPa and the temperature to be 30℃-50℃ to obtain the extract material; Step 3: Pass the extract into a distillation column. The pressure of the distillation column is 15-18 MPa, and the temperature is divided into three sections from bottom to top: the lower temperature zone is 35±5℃, the middle temperature zone is 40±5℃, and the upper temperature zone is 45±5℃, to obtain the distillate. Step 4: Pass the distillation feed into the primary separator. The pressure in the primary separator is 9-14 MPa and the temperature is 35-55℃. Collect the Magnolia officinalis extract.

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