Supercritical fluid extraction method and device for osmanthus fragrans components

Abstract

The application discloses a supercritical fluid extraction device for osmanthus ingredients, which comprises an extraction kettle and a material conveying assembly for conveying supercritical fluid, and a storage assembly is further arranged in the extraction kettle; the storage assembly comprises a storage box, an inner cavity is formed in the storage box, two groups of rotating parts are connected between the storage box and the extraction kettle, a plurality of through holes for the supercritical fluid to pass through are formed in the surface of the storage box, and the plurality of through holes are communicated with the inner cavity of the storage box. The rotatable storage box provided by the supercritical fluid extraction device for osmanthus ingredients is used for the supercritical fluid to flow through the inside of the extraction kettle from bottom to top and to have an extraction reaction with osmanthus; the osmanthus is transferred from the bottom end of the inner cavity of the storage box to the top end of the inner cavity under the pushing of the supercritical fluid; at this time, the storage box is heavy at the top and light at the bottom; and the storage box is turned over under the action of the rotating parts and gravity, so that the osmanthus is located below the inner cavity of the storage box again. The extraction efficiency is ensured, and the situation that the extraction kettle is turned over by 180 degrees is avoided.

Description

Technical Field

[0001] This invention relates to the field of superfluid extraction, specifically to a supercritical fluid extraction method and apparatus for extracting components from osmanthus flowers. Background Technology

[0002] Supercritical fluid extraction is a novel extraction and separation technology that uses supercritical fluids as extractants to extract specific components from liquids or solids to achieve separation. Supercritical fluids are substances that exist in a state between gas and liquid, neither gaseous nor liquid. Such substances can only exist when their temperature and pressure exceed their critical point. Supercritical fluids have strong penetrating power similar to gases and high density and solubility similar to liquids, exhibiting good solvent properties and can be used as solvents for extraction and separation of monomers.

[0003] For example, patent CN106902538B, published on January 10, 2020, discloses a supercritical fluid extraction device. The extraction vessel is mounted on a support frame and rotatably connected to the support frame. The support frame is equipped with a latch lock for fixing the extraction vessel. A first filter tube assembly is provided on one side wall of the extraction vessel, a second filter tube assembly is provided on the other side wall, and a third filter tube is provided at the other end of the extraction vessel. A four-way valve is provided on the third filter tube. A liquid inlet three-way valve is provided on the extractant inlet pipe. One port of the liquid inlet three-way valve is connected to the first filter tube assembly and the liquid outlet three-way valve provided on the liquid outlet pipe through a first three-way valve group connected in series on the pipeline, and the other port is connected to the four-way valve through the pipeline. The liquid outlet three-way valve is connected to the second filter tube assembly and the four-way valve through a second three-way valve group connected in series on the pipeline, and the liquid outlet three-way valve is connected to the liquid outlet pipe. This supercritical fluid extraction device has the advantages of low cost, simple structure, and high extraction efficiency.

[0004] When the extractant flows through the extraction vessel from top to bottom, it can exert both the extraction and pressing effects, significantly improving extraction efficiency. However, when the extractant flows through the extraction vessel from bottom to top, the outlet pipe is prone to blockage, and with a single outlet, the extractant is easy to enter but difficult to exit when the filter cake layer is thick, which is not conducive to improving extraction efficiency. In the aforementioned patent, when the extractant flows through the extraction vessel from bottom to top, the extraction vessel can be rotated 180° at different stages of the extraction process to improve the pressing effect of the extractant. However, in order to ensure that the extractant inside the vessel is in a supercritical fluid state, the existing extraction vessel needs to be resistant to high temperature and high pressure. As a result, the common extraction vessel has a large footprint. When it is necessary to drive the extraction vessel to rotate 180°, the manufacturer needs a lot of space to install the extraction vessel, which increases production costs. Moreover, there are certain safety hazards when the extraction vessel rotates 180°. Summary of the Invention

[0005] The purpose of this invention is to provide a supercritical fluid extraction method and apparatus for osmanthus components, thereby solving the technical problems in related technologies.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A supercritical fluid extraction device for osmanthus components includes an extraction vessel and a conveying assembly for transporting supercritical fluid. The extraction vessel also contains a storage assembly, which includes a storage box with an inner cavity. Two sets of rotating parts are symmetrically mounted on the surface of the storage box, connected to the inner wall of the extraction vessel. These rotating parts drive the storage box to rotate around a horizontal axis. Multiple through holes for supercritical fluid passage are evenly distributed on the upper and lower sides of the storage box, all communicating with the inner cavity. Osmanthus flowers are placed at the bottom of the inner cavity of the storage box. The conveying assembly delivers supercritical fluid to the lower end of the extraction vessel, and the supercritical fluid flows from bottom to top through the extraction vessel, causing the storage box to rotate within the extraction vessel.

[0008] The aforementioned rotating part includes a fixed block fixedly installed on the inner wall of the extraction vessel. The surface of the fixed block near the storage box has an interconnected deflection groove and a vertically arranged guide groove. The deflection groove and the guide groove are arranged vertically. The outer wall of the fixed block is arc-shaped. Multiple limiting modules are arranged in the guide groove. The multiple limiting modules are arranged sequentially along the groove direction of the guide groove. Each limiting module includes two limiting blocks. The two limiting blocks are placed on both sides of the guide groove and are rotatably installed in the guide groove. The two limiting blocks can only deflect in one direction toward the deflection groove. Two connecting shafts are installed on the side wall of the storage box near the rotating part. The axes of the two connecting shafts are spaced apart from the horizontal axis of the storage box. That is, the two connecting shafts are eccentrically arranged on the surface of the storage box. The ends of the two connecting shafts away from the storage box are inserted into the deflection groove or the guide groove.

[0009] As mentioned above, the inner surface of the storage box is also equipped with a filter element. The filter element is used to prevent the osmanthus material from entering the through hole. Both sides of the through hole are provided with a drainage section. Both drainage sections are used to impact the filter element on the inner surface of the storage box to prevent the osmanthus material from accumulating and agglomerating on the filter element on the inner surface of the storage box.

[0010] The aforementioned unblocking unit includes a mounting frame, which is mounted on the surface of the storage box. A sliding block is slidably mounted on the mounting frame, and the sliding direction of the sliding block is parallel to the axis of the extraction vessel. A drive rack is mounted on both sides of the sliding block, and a drive gear meshes on the outer side of each drive rack. The drive gear is rotatably connected to the mounting frame through a shaft, and the axis of the shaft is perpendicular to the axis of the extraction vessel. An unblocking component is mounted on the drive gear, and the unblocking component rotates synchronously with the drive gear.

[0011] The aforementioned unblocking device includes an unblocking frame, which is fixedly connected to a drive gear. Multiple unblocking pins are installed on the unblocking frame, and each of the multiple unblocking pins corresponds to a multiple through hole on the surface of the storage box.

[0012] The aforementioned unblocking needle consists of a guide section and an unblocking section. One end of the guide section is connected to the unblocking frame, and the other end of the guide section is connected to the unblocking section. A settling groove is provided on the end of the guide section away from the unblocking section, and a guide hole is provided on the side wall of the guide section, which connects the inner cavity of the guide section with the settling groove.

[0013] The aforementioned unblocking needle is also equipped with a dispersing component, which is used to break up the compacted osmanthus flowers.

[0014] The aforementioned dispersion component includes a rotating ring, which is sleeved on the outside of the guide hole of the unblocking needle. The rotating ring and the unblocking needle are arranged coaxially and are rotatably connected by a reset torsion spring. A through groove is provided on the side wall of the rotating ring, which drives the guide hole to communicate with the inner cavity of the extraction vessel. A drive rod is rotatably mounted on the side wall of the rotating ring. The axis of the drive rod is perpendicular to the axis of the rotating ring. A spiral strip is fixedly mounted on the inner wall of the through hole, and the drive rod overlaps the surface of the spiral strip.

[0015] As described above, an extension sleeve is fitted on the side wall of the dredging section. The extension sleeve is arranged coaxially with the dredging section. The end of the extension sleeve near the guide section is connected to the rotating ring through a ratchet mechanism. Multiple storage slots are opened on the side wall of the extension sleeve, and cutting blades are hinged in the storage slots.

[0016] A supercritical fluid extraction method for osmanthus components involves using a supercritical fluid extraction device to extract osmanthus components from osmanthus flowers. The extraction process includes the following steps:

[0017] S1: The osmanthus material is filled into the inner cavity of the storage box by manual or automatic equipment;

[0018] S2: The feeding assembly delivers supercritical fluid into the extraction vessel, and the supercritical fluid extracts the osmanthus material;

[0019] S3: Osmanthus material accumulates at the top of the storage box. Due to the rotating part and gravity, the storage box flips inside the extraction vessel.

[0020] S4: After the storage box is flipped over, the unblocking section unblocks the through hole;

[0021] S5: After the dredging is completed, the dispersing component cuts and crushes the dregs cake in the inner cavity of the storage box.

[0022] The beneficial effects of the present invention are as follows: In the above technical solution, the rotatable storage box provided by the present invention allows the supercritical fluid to flow from bottom to top through the interior of the extraction vessel when the feeding assembly delivers the supercritical fluid. The supercritical fluid enters the interior of the storage box through the through holes on the surface of the storage box and reacts with the osmanthus flowers. Under the push of the supercritical fluid, the osmanthus flowers are transferred from the bottom to the top of the inner cavity of the storage box. At this time, the storage box is top-heavy and bottom-light. Under the action of the rotating part and gravity, the storage box flips inside the extraction vessel, so that the osmanthus flowers are back in the lower part of the inner cavity of the storage box. While ensuring the extraction efficiency, it avoids the extraction vessel from flipping 180°, thereby saving production costs and floor space. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0024] Figure 1 This is a front view of the supercritical fluid extraction apparatus provided in an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the internal structure of the supercritical fluid extraction device provided in an embodiment of the present invention;

[0026] Figure 3 Provided for embodiments of the present invention Figure 2 An enlarged view of point A;

[0027] Figure 4 Provided for embodiments of the present invention Figure 2 A schematic diagram of the cross-section of BB;

[0028] Figure 5 This is a schematic diagram illustrating the fit between the unblocking pin and the through hole on the surface of the storage box, as provided in an embodiment of the present invention.

[0029] Figure 6 This is a schematic diagram of the structure of the unblocking pin provided in an embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram illustrating the engagement of a dredging pin and a through hole, provided in another embodiment of the present invention.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Extraction vessel; 2. Feeding assembly; 3. Storage assembly; 31. Storage box; 32. Inner cavity; 33. Through hole; 34. Rotating part; 341. Fixing block; 342. Deflection chute; 343. Guide chute; 344. Connecting shaft; 35. Limiting module; 351. Limiting stop; 4. Unblocking part; 41. Mounting bracket; 42. Sliding block; 43. Drive rack; 44. Drive gear; 45. Shaft; 5. Unblocking component; 51. Unblocking frame; 52. Unblocking pin; 521. Guide section; 522. Unblocking section; 523. Guide hole; 524. Settling tank; 6. Dispersing component; 61. Rotating ring; 62. Return torsion spring; 63. Connecting groove; 64. Drive rod; 65. Spiral strip; 66. Extension sleeve; 67. Collection groove; 68. Cutting disc. Detailed Implementation

[0033] To enable those skilled in the art to better understand the technical solution of the present invention, the following will be described in conjunction with the appendix. Figure 1 - Appendix Figure 7 The present invention will be described in further detail below.

[0034] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "degree," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0035] This invention provides a supercritical fluid extraction device for osmanthus components, comprising an extraction vessel 1 and a conveying assembly 2 for transporting supercritical fluid. The extraction vessel 1 also includes a storage assembly 3, which comprises an openable storage box 31. The storage box 31 is closed magnetically or by a snap-fit ​​mechanism. An inner cavity 32 is formed inside the storage box 31. Two sets of rotating parts 34 are symmetrically mounted on the surface of the storage box 31, connected to the inner wall of the extraction vessel 1. The two sets of rotating parts 34 drive the storage box 31 to rotate about a horizontal axis. Each rotating part 34 includes a fixing block 34 fixedly mounted on the inner wall of the extraction vessel 1. 1. The surface of the fixing block 341 near the storage box 31 has an interconnected deflection groove 342 and a vertically arranged guide groove 343. The deflection groove 342 and the guide groove 343 are arranged vertically. The outer wall of the fixing block 341 is arc-shaped. Multiple limiting modules 35 are arranged in the guide groove 343. The multiple limiting modules 35 are arranged sequentially along the groove direction of the guide groove 343. Each limiting module 35 includes two limiting blocks 351. The two limiting blocks 351 are placed on both sides of the guide groove 343. The two limiting blocks 351 are rotatably installed in the guide groove 343. The two limiting blocks 351 can only deflect in one direction towards the deflection groove 342. Two connecting shafts 344 are installed on the side wall near the rotating part 34. The axes of the two connecting shafts 344 are spaced apart from the horizontal axis of the storage box 31, that is, the two connecting shafts 344 are eccentrically arranged on the surface of the storage box 31. The ends of the two connecting shafts 344 away from the storage box 31 are inserted into the deflection groove 342 or the guide groove 343. The distance between every two sets of limiting modules 35 is just enough to place one connecting shaft 344. The outer wall of the fixing block 341 is arc-shaped, and the trajectory of this arc is consistent with the rotation trajectory of the other connecting shaft 344 with the axis of any connecting shaft 344 as the center. Generally, the extraction vessel 1 is arranged vertically, while The rotation axis of the storage box 31, which is also the axis of the connecting shaft 344, is horizontal. Multiple through holes 33 for supercritical fluid to pass through are evenly opened on the upper and lower sides of the storage box 31. All the through holes 33 are connected to the inner cavity 32 of the storage box 31. Osmanthus flowers are placed at the bottom of the inner cavity 32 of the storage box 31. The conveying assembly 2 includes a storage container for storing supercritical fluid. A conveying pipe is connected to the storage container. The other end of the conveying pipe is connected to the lower end of the extraction vessel 1. The conveying pipe conveys supercritical fluid to the lower end of the extraction vessel 1. The supercritical fluid flows through the extraction vessel 1 from bottom to top, so that the supercritical fluid reacts with the osmanthus material in the storage box 31.

[0036] Specifically, the storage box 31 is opened manually or automatically, exposing its inner cavity 32. Osmanthus material is then placed inside the inner cavity 32 of the storage box 31, and the storage box 31 is closed. At this point, the osmanthus material is stored at the bottom of the inner cavity 32 of the storage box 31. Then, the conveying assembly 2 begins operation, and the conveying pipe transports the supercritical fluid from the storage container into the extraction vessel 1. The supercritical fluid enters from the bottom of the extraction vessel 1 and flows upwards through its interior. As the supercritical fluid flows inside the extraction vessel 1, it enters the storage box 31 through the through-holes 33 on its surface and comes into contact with the osmanthus material inside. When the supercritical fluid comes into contact with the osmanthus material, an extraction reaction occurs. As the supercritical fluid enters the storage tank 31, it pushes the osmanthus material from the bottom of the inner cavity 32 of the storage tank 31 to the top. With the input of the supercritical fluid, the osmanthus material is forced to press against the top of the inner cavity 32 of the storage tank 31, accelerating the extraction efficiency. The pressed osmanthus material accumulates at the top of the inner cavity 32 of the storage tank 31, forming a residue cake. The fibers of the residue cake block the through-hole 33 at the top of the inner cavity 32 of the storage tank 31, gradually sealing the top of the storage tank 31. As the supercritical fluid continues to flow in, it pushes the entire storage tank 31... As the body moves upward, the connecting shaft 344 on the storage box 31 slides along the groove of the guide groove 343. When the connecting shaft 344, located at the top, leaves the guide groove 343 and enters the deflection groove 342, the groove of the deflection groove 342 is inclined forward or backward. When the connecting shaft 344, located at the top, passes through the deflection groove 342, the force on the storage box 31 changes due to the positional shift. The storage box 31 will deflect at a certain angle around its own axis, and this deflection angle is consistent with the inclination angle of the deflection groove 342. When the connecting shaft 344, located at the top, leaves the deflection groove 342 and enters the arc-shaped outer wall of the fixing block 341, the dregs cake in the storage box 31 after deflection accumulates on one side. This causes the center of gravity inside the storage box 31 to become unbalanced, causing the storage box 31 to rotate around the axis of another connecting shaft 344. At this time, the bottom end of the rotating connecting shaft 344 is supported by two limiting blocks 351, causing the connecting shaft 344, which was initially located at the top, to move to the bottom of the other connecting shaft 344. At this time, the storage box 31 flips inside the extraction vessel 1, changing the placement state of the storage box 31 (the top end of the inner cavity 32 in the initial state becomes the bottom end, and the bottom end of the inner cavity 32 becomes the top end). Finally, as the supercritical fluid continues to flow in, the osmanthus material inside the storage box 31 repeats the above actions, completing the supercritical fluid extraction operation of the osmanthus material.

[0037] It should be noted that the shape of the inner cavity 32 of the storage box 31 can be an ellipsoid, a sphere, a cylinder, etc., as long as the storage box 31 can rotate when the gravity inside the inner cavity 32 changes. Preferably, in this embodiment, the inner cavity 32 of the storage box 31 is a horizontally placed cylinder.

[0038] In this process, the osmanthus material, after extraction and extrusion, forms a residue cake. This residue cake exists within the inner cavity 32 of the storage tank 31. Driven by the supercritical fluid, the residue cake comes into contact with and is compressed against the through-holes 33 on the surface of the storage tank 31. This can easily lead to residue cake remaining inside the through-holes 33, causing blockage and affecting the efficiency of the osmanthus essence extracted by the supercritical fluid leaving the storage tank 31. To prevent blockage of the through-holes 33, a filter element is installed on the inner surface of the storage tank 31. This filter element prevents the osmanthus material from entering the through-holes 33. The filter element has an elastic structure or is movably connected to the inner surface of the storage tank 31. When impacted, it can deform or move upwards. In this embodiment, the filter element is a filter plate or filter screen. The shape of the filter plate or filter screen is consistent with the existing shape of the inner cavity 32 of the storage box 31. In order to prevent the osmanthus material from adhering to the filter plate, the storage assembly 3 also includes two sets of unblocking parts 4. The two sets of unblocking parts 4 are placed on both sides of the through hole 33. Both unblocking parts 4 are used to impact the filter element on the inner surface of the storage box 31 to prevent the osmanthus material from agglomerating and condensing on the filter element on the inner surface of the storage box 31, which would cause the through hole 33 to be blocked and affect the flow of supercritical fluid carrying osmanthus essence out of the through hole 33. The unblocking part 4 includes a mounting bracket 41, which is fixedly installed on the surface of the storage box 31. The mounting bracket 41 avoids the position of the through hole 33. A sliding block 42 is slidably mounted on the mounting frame 41. The sliding direction of the sliding block 42 is perpendicular to the rotation axis of the storage tank 31. That is, when the sliding block 42 slides on the surface of the mounting frame 41, the sliding block 42 moves closer to or away from the storage tank 31. A drive rack 43 is mounted on both sides of the sliding block 42. A drive gear 44 meshes with the outer side of each drive rack 43. The drive gear 44 is rotatably connected to the mounting frame 41 through a shaft 45. The axis of the shaft 45 is perpendicular to the axis of the extraction vessel 1. A draining component 5 is mounted on the drive gear 44. The draining component 5 rotates synchronously with the drive gear 44. The draining component 5 includes a draining frame 51, which is fixedly connected to the side end face of the drive gear 44. Multiple draining pins 52 are hinged to the draining frame 51. The draining pins 52 are connected to the storage tank 31. The through holes 33 on the surface are corresponding to the insertion and combing. It should be noted that, in this embodiment, because the inner cavity 32 of the storage box 31 is a horizontally placed cylinder and the storage box 31 has a cuboid or similar structure, the depth of the through holes 33 on the surface of the storage box 31 is different. The depth of the through holes 33 on the surface of the storage box 31 gradually increases from the middle to the front and rear ends of the drain cleaning rack 51. Consequently, the drain cleaning pins 52 on the drain cleaning rack 51 correspond to the through holes 33 on the surface of the storage box 31. In this embodiment, the end of the through hole 33 near the surface of the storage box 31 is funnel-shaped. The drain cleaning pin 52 consists of a guide section 521 and a drain cleaning section 522. One end of the guide section 521 is connected to the drain cleaning rack 51, and the other end of the guide section 521 is connected to the drain cleaning section 522.A settling groove 524 is formed at the end of the guide section 521 away from the dredging section 522, and a guide hole 523 is formed on the side wall of the guide section 521, connecting the inner cavity 32 of the guide section 521 to the settling groove 524.

[0039] Specifically, in the initial state, the through hole 33 on the storage box 31 is vertical, that is, the axis of the through hole 33 is parallel to the axis of the extraction vessel 1. At this time, the states of the unblocking parts 4 located at both ends of the through hole 33 (i.e., the upper and lower sides of the storage box 31) are not the same. The state of the unblocking part 4 located above the storage box 31 is as follows: the sliding block 42 slides along the mounting bracket 41 towards the storage box 31 under the action of gravity. The drive racks 43 on both sides of the sliding block 42 mesh with the drive gears 44, driving the drive gears 44 to move towards the storage box 31 by their own weight. The axis rotates around the center. At this time, the rotation directions of the drive gears 44 on both sides are opposite. The drive gears 44 on both sides drive the unblocking frame 51 to rotate away from the storage box 31. That is, as the drive gears 44 rotate, the part of the unblocking frame 51 away from the drive gears 44 rotates away from the storage box 31. The unblocking frame 51, along with the unblocking needle 52, moves away from the through hole 33 on the surface of the storage box 31, so that the through hole 33 at the top of the storage box 31 is open, which facilitates the supercritical fluid to flow out from the top of the storage box 31.The unblocking section 4 located below the storage box 31 is in the following state: Under the action of gravity, the sliding block 42 slides along the mounting bracket 41 away from the storage box 31. The drive racks 43 on both sides of the sliding block 42 mesh with the drive gears 44, causing the drive gears 44 to rotate around their own axis. At this time, the drive gears 44 on both sides rotate in opposite directions. The drive gears 44 on both sides drive the unblocking frame 51 to rotate towards the storage box 31. That is, as the drive gears 44 rotate, the part of the unblocking frame 51 away from the drive gears 44 rotates towards the storage box 31. The unblocking frame 51, along with the unblocking needle 52, synchronously approaches the through hole 33 on the surface of the storage box 31 until the unblocking needle 52 is inserted into the through hole 33. The unblocking needle 52 strikes the filter element, causing the filter element to vibrate. When the filter element vibrates, it synchronously drives the osmanthus material to vibrate synchronously, assisting in the separation of the osmanthus material from the filter element. Afterward, as the unblocking needle 52 passes through the through hole 33, the tip of the unblocking needle 52... The filter element lifts the osmanthus material, allowing the separated material to exist independently within the inner cavity 32 of the storage box 31, thus clearing the through hole 33. At this point, both the clearing section 522 and the guide section 521 of the clearing needle 52 are inserted into the through hole 33. The guide hole 523 on the guide section 521 is inserted into the inner cavity 32 of the storage box 31 and located at the bottom of the osmanthus material. The inner cavity 32, under the action of the guide hole 523 and the settling tank 524, is connected to the interior of the extraction vessel 1. The unblocking section 522 and the guide section 521, located below the storage tank 31, are arranged vertically, with the end of the guide section 521 furthest from the unblocking section 522 facing the bottom of the extraction vessel 1. Therefore, when the feeding assembly 2 introduces supercritical fluid into the extraction vessel 1, the supercritical fluid enters the settling tank 524 from its opening and then flows into the storage tank 31 through the guide hole 523. The supercritical fluid reacts with the osmanthus material inside the storage tank 31, achieving the extraction treatment of the osmanthus material.

[0040] In another embodiment, the osmanthus material is extracted and compressed multiple times to form a cake of residue. The compressed residue cake is relatively compact. Even after the unblocking needle 52 completes the unblocking treatment of the through holes 33 and filter elements on the storage box 31, the osmanthus residue inside the storage box 31 is still placed in a cake shape at the bottom of the inner cavity 32 of the storage box 31. At this time, when the supercritical fluid passes through the residue cake, because the residue cake is compressed relatively compactly, it is difficult for the supercritical fluid to quickly penetrate into the interior of the residue cake, thus carrying out the osmanthus essence inside the residue cake and affecting the extraction efficiency of the osmanthus essence. Furthermore, the pore size of the filter element gradually decreases from the outside to the inside, that is, the closer the pore size of the filter element is to the inner wall of the storage box 31, the larger the pore size. Moreover, the multiple filter holes on the filter plate correspond one-to-one with the multiple through holes 33 on the storage box 31. In this embodiment, the size of the filter hole is much larger than the size of the above embodiments so that the unblocking needle 52 can be inserted. The unblocking needle 52 is also provided with a dispersing element 6. The dispersing component 6, used to break up compacted osmanthus flowers, includes a rotating ring 61. The rotating ring 61 is sleeved on the outside of the guide hole 523 of the unblocking needle 52. The rotating ring 61 and the unblocking needle 52 are coaxially arranged and rotatably connected by a return torsion spring 62. A through-hole 63 is provided on the side wall of the rotating ring 61, which drives the guide hole 523 to communicate with the inner cavity 32 of the extraction vessel 1. A drive rod 64 is rotatably mounted on the side wall of the rotating ring 61. The axis of the moving rod 64 is perpendicular to the axis of the rotating ring 61. A spiral strip 65 is fixedly installed on the inner wall of the through hole 33. The driving rod 64 overlaps the surface of the spiral strip 65. An extension sleeve 66 is sleeved on the side wall of the unblocking section 522. The extension sleeve 66 is coaxially arranged with the unblocking section 522. One end of the extension sleeve 66 near the guide section 521 is connected to the rotating ring 61 through a ratchet mechanism. Multiple storage slots 67 are opened on the side wall of the extension sleeve 66. A cutting blade 68 is hinged in the storage slot 67.

[0041] Specifically, when the unblocking needle 52 is inserted into the through hole 33 and gradually penetrates into the inner cavity 32 of the storage box 31 along the through hole 33 and the filter hole, the drive rod 64 on the rotating ring 61 moves along the spiral trajectory of the spiral strip 65. As the drive rod 64 moves along the spiral trajectory of the spiral strip 65, the rotating ring 61 rotates around its own axis. The rotating ring 61 drives the return torsion spring 62 to deform, and the return torsion spring 62 accumulates elastic potential energy. At this time, under the action of the ratchet mechanism, the extension sleeve 66 does not rotate. When the guide section 521 of the unblocking needle 52 passes through the wall thickness and filter hole of the storage box 31 and extends into the inner cavity 32 of the storage box 31, the drive rod 64 disengages from the spiral strip 65, and the return torsion spring 62 releases the accumulated elastic potential energy. Under the action of the ratchet mechanism, the extension sleeve 66 rotates synchronously with the rotating ring 61. As a result, the cutting disc 68 on the surface of the extension sleeve 66, under the action of centrifugal force, deflects at the end away from the hinge position away from the extension sleeve 66, unfolding the cutting disc 68. Then, through the rotation of the extension sleeve 66 itself, the compacted lees cake is cut into pieces. When the supercritical fluid comes into contact with the chopped lees cake, the supercritical fluid flows through the residue of the lees cake, carrying out the residual osmanthus essence, thus completing the extraction of the osmanthus material. Furthermore, the crushed lees cake is easier to clean, saving cleaning time inside the extraction vessel 1. However, when the storage box 31 continues to tilt, causing... When the unblocking pin 52 is positioned above the storage box 31, the sliding block 42 slides along the mounting bracket 41 towards the storage box 31 under the action of gravity. The drive racks 43 on both sides of the sliding block 42 mesh with the drive gears 44, causing the drive gears 44 to rotate around their own axes. At this time, the drive gears 44 on both sides rotate in opposite directions, and the drive gears 44 on both sides cause the unblocking bracket 51 to rotate away from the storage box 31. That is, as the drive gears 44 rotate, the section of the unblocking bracket 51 away from the drive gears 44 rotates away from the storage box 31. The unblocking bracket 51, along with the unblocking pin 52, moves away from the through hole 33 on the surface of the storage box 31. When the unblocking pin 52 moves away from the through hole 33, the drive rack on the unblocking pin 52... The moving rod 64 spirals upward in the opposite direction along the surface of the spiral strip 65. At this time, the rotation direction of the rotating ring 61 is opposite to the previous rotation direction. That is, the rotation direction of the rotating ring 61 when it leaves the through hole 33 is opposite to the rotation direction of the rotating ring 61 when it enters the through hole 33. Therefore, when the rotating ring 61 leaves the through hole 33, under the action of the ratchet mechanism, the extension sleeve 66 will rotate synchronously with the rotating ring 61. Thus, the cutting blade 68 on the surface of the extension sleeve 66 rotates and enters the through hole 33. Only one side of the cutting blade 68 contacts the spiral strip 65. During the upward process of the cutting blade 68, the spiral strip 65 grinds the one side of the cutting blade 68 to improve the sharpness of the cutting blade 68 and improve the cutting efficiency of the cutting blade 68 in the subsequent cutting of the compacted lees cake.

[0042] In another embodiment of the present invention, a supercritical fluid extraction method for osmanthus components is also provided. This method uses a supercritical fluid extraction device to extract osmanthus components from osmanthus using supercritical fluid. The specific steps for extracting osmanthus are as follows:

[0043] S1: Manual or automatic equipment opens the storage box 31, places the osmanthus material into the inner cavity 32 of the storage box 31, and then closes the storage box 31 to complete the filling of the osmanthus material;

[0044] S2: The conveying pipeline transports the supercritical fluid in the storage container to the extraction vessel 1. The supercritical fluid enters from the bottom of the extraction vessel 1 and flows through the interior of the extraction vessel 1 in an upward direction. The supercritical fluid enters the interior of the storage box 31 through the through hole 33 on the surface of the storage box 31 and comes into contact with the osmanthus material inside the storage box 31. When the supercritical fluid comes into contact with the osmanthus material, an extraction reaction is carried out.

[0045] S3: Supercritical fluid drives the osmanthus material to press against the top of the inner cavity 32 of the storage box 31, accelerating the extraction efficiency of the osmanthus material. The extracted residue cake accumulates at the top of the inner cavity 32 of the storage box 31, forming a residue cake. The fibers of the residue cake block the through hole 33 at the top of the inner cavity 32 of the storage box 31. At this time, the top of the storage box 31 is sealed. As the supercritical fluid continues to flow in, the supercritical fluid pushes the storage box 31 upward as a whole. At this time, the connecting shaft 344 on the storage box 31 slides along the groove direction of the guide groove 343. When the connecting shaft 344 located at the top leaves the guide groove 343 and enters the deflection chute 342, because the groove direction of the deflection chute 342 is inclined to the front or back, when the connecting shaft 344 located at the top passes through... When passing through the deflection chute 342, the storage box 31 will deflect at a certain angle with its own axis as the center. The deflection angle is consistent with the tilt angle of the deflection chute 342. When the upper connecting shaft 344 leaves the deflection chute 342 and enters the arc-shaped outer wall of the fixed block 341, the waste cake in the deflected storage box 31 will accumulate on one side, causing the center of gravity inside the storage box 31 to become unbalanced. As a result, the storage box 31 will rotate with the axis of the other connecting shaft 344 as the center. At this time, the bottom end of the rotating connecting shaft 344 is supported by two limiting blocks 351, so that the connecting shaft 344, which was initially located at the top, will move to the bottom of the other connecting shaft 344. At this time, the storage box 31 will flip inside the extraction vessel 1.

[0046] S4: After the storage box 31 is flipped over, the sliding block 42 in the unblocking part 4 located below the storage box 31 slides away from the storage box 31 along the mounting frame 41 under the action of gravity. The drive racks 43 on both sides of the sliding block 42 mesh with the drive gears 44, causing the drive gears 44 to rotate around their own axis. At this time, the drive gears 44 on both sides rotate in opposite directions. The drive gears 44 on both sides carry the unblocking frame 51 to rotate towards the storage box 31. That is, as the drive gears 44 rotate, the part of the unblocking frame 51 away from the drive gears 44 rotates towards the storage box 31. The unblocking frame 51 carries the unblocking needle 52 to approach the through hole 33 on the surface of the storage box 31 in sync until the unblocking needle 52 is inserted into the through hole 33. The unblocking needle 52 pushes the osmanthus residue blocking the through hole 33 back into the inner cavity 32 of the storage box 31, completing the unblocking treatment of the through hole 33.

[0047] S5: As the unblocking needle 52 gradually penetrates into the inner cavity 32 of the storage box 31 along the through hole 33, the drive rod 64 on the rotating ring 61 moves along the spiral trajectory of the spiral strip 65. As the drive rod 64 moves along the spiral trajectory of the spiral strip 65, the rotating ring 61 rotates around its own axis. The rotating ring 61 drives the return torsion spring 62 to deform, and the return torsion spring 62 accumulates elastic potential energy. At this time, under the action of the ratchet mechanism, the extension sleeve 66 does not rotate. When the guide section 521 of the unblocking needle 52 passes through the storage box... When the wall thickness of 31 extends into the inner cavity 32 of the storage box 31, the drive rod 64 disengages from the spiral strip 65, and the reset torsion spring 62 releases the accumulated elastic potential energy. At this time, under the action of the ratchet mechanism, the extension sleeve 66 rotates synchronously with the rotating ring 61. As a result, under the action of centrifugal force, the end of the cutting blade 68 on the surface of the extension sleeve 66 away from the hinge position deflects away from the extension sleeve 66, unfolding the cutting blade 68. Then, through the rotation of the extension sleeve 66 itself, the cutting process of the compacted lees cake is completed.

[0048] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A supercritical fluid extraction device for osmanthus components, comprising an extraction vessel (1) and a conveying assembly (2) for conveying supercritical fluid, characterized in that, The extraction vessel (1) is also equipped with a storage component (3). The storage component (3) includes a storage box (31). The storage box (31) has an inner cavity (32). Two sets of rotating parts (34) are symmetrically installed on the surface of the storage box (31). The two sets of rotating parts (34) are connected to the inner wall of the extraction vessel (1). The two sets of rotating parts (34) drive the storage box (31) to rotate in the horizontal direction as the axis of rotation. Multiple through holes (33) for supercritical fluid to pass through are evenly opened on the upper and lower sides of the storage box (31). The multiple through holes (33) are all connected to the inner cavity (32) of the storage box (31). Osmanthus flowers are placed at the bottom of the inner cavity (32) of the storage box (31). The conveying component (2) conveys supercritical fluid to the lower end of the extraction vessel (1). The supercritical fluid flows from bottom to top through the extraction vessel (1), driving the storage box (31) to flip inside the extraction vessel (1). The rotating part (34) includes a fixed block (341) fixedly installed on the inner wall of the extraction vessel (1). The surface of the fixed block (341) near the storage box (31) is provided with a deflection groove (342) and a vertically arranged guide groove (343) that are interconnected. The deflection groove (342) and the guide groove (343) are arranged vertically. The outer wall of the fixed block (341) is arc-shaped. Multiple limiting modules (35) are provided in the guide groove (343). The multiple limiting modules (35) are arranged sequentially along the groove direction of the guide groove (343). Each limiting module (35) includes two limiting blocks (351). 351) are placed on both sides of the guide groove (343). The two limiting blocks (351) are rotatably installed in the guide groove (343). The two limiting blocks (351) can only deflect in one direction toward the deflection groove (342). Two connecting shafts (344) are installed on the side wall of the storage box (31) near the rotating part. The axes of the two connecting shafts (344) are spaced apart from the horizontal axis of the storage box (31). That is, the two connecting shafts (344) are eccentrically arranged on the surface of the storage box (31). The end of the two connecting shafts (344) away from the storage box (31) is inserted into the deflection groove (342) or the guide groove (343).

2. The supercritical fluid extraction device for osmanthus components according to claim 1, characterized in that, The inner surface of the storage box (31) is also equipped with a filter element. The filter element is used to prevent the osmanthus material from entering the through hole (33). Both sides of the through hole (33) are provided with a drainage part (4). Both drainage parts (4) are used to impact the filter element on the inner surface of the storage box (31) to prevent the osmanthus material from accumulating and agglomerating on the filter element on the inner surface of the storage box (31).

3. The supercritical fluid extraction device for osmanthus components according to claim 2, characterized in that, The unblocking part (4) includes a mounting bracket (41), which is mounted on the surface of the storage box (31). A sliding block (42) is slidably mounted on the mounting bracket (41). The sliding direction of the sliding block (42) is parallel to the axis of the extraction vessel (1). A drive rack (43) is mounted on both sides of the sliding block (42). A drive gear (44) meshes on the outer side of both drive racks (43). The drive gear (44) is rotatably connected to the mounting bracket (41) through a shaft (45). The axis of the shaft (45) is perpendicular to the axis of the extraction vessel (1). An unblocking component (5) is mounted on the drive gear (44). The unblocking component (5) rotates synchronously with the drive gear (44).

4. The supercritical fluid extraction device for osmanthus components according to claim 3, characterized in that, The unblocking component (5) includes an unblocking frame (51), which is fixedly connected to a drive gear (44). Multiple unblocking pins (52) are installed on the unblocking frame (51), and the multiple unblocking pins (52) correspond one-to-one with multiple through holes (33) on the surface of the storage box (31).

5. The supercritical fluid extraction apparatus for osmanthus components according to claim 4, characterized in that, The unblocking needle (52) consists of a guide section (521) and an unblocking section (522). One end of the guide section (521) is connected to the unblocking frame (51), and the other end of the guide section (521) is connected to the unblocking section (522). A settling groove (524) is provided on the end of the guide section (521) away from the unblocking section (522). A guide hole (523) is provided on the side wall of the guide section (521). The guide hole (523) connects the inner cavity (32) of the guide section (521) with the settling groove (524).

6. The supercritical fluid extraction apparatus for osmanthus components according to claim 5, characterized in that, The unblocking needle (52) is also equipped with a dispersing component (6), which is used to disperse the compacted osmanthus flowers.

7. The supercritical fluid extraction apparatus for osmanthus components according to claim 6, characterized in that, The dispersing component (6) includes a rotating ring (61), which is sleeved on the outside of the guide hole (523) of the unblocking needle (52). The rotating ring (61) and the unblocking needle (52) are arranged coaxially. The rotating ring (61) and the unblocking needle (52) are rotatably connected by a reset torsion spring (62). A through-hole (63) is provided on the side wall of the rotating ring (61). The through-hole (63) drives the guide hole (523) to communicate with the inner cavity (32) of the extraction vessel (1). A drive rod (64) is rotatably mounted on the side wall of the rotating ring (61). The axis of the drive rod (64) is perpendicular to the axis of the rotating ring (61). A spiral strip (65) is fixedly mounted on the inner wall of the through hole (33). The drive rod (64) overlaps the surface of the spiral strip (65).

8. The supercritical fluid extraction apparatus for osmanthus components according to claim 7, characterized in that, An extension sleeve (66) is fitted on the side wall of the dredging section (522). The extension sleeve (66) is coaxially arranged with the dredging section (522). The end of the extension sleeve (66) near the guide section (521) is connected to the rotating ring (61) through a ratchet mechanism. Multiple storage slots (67) are opened on the side wall of the extension sleeve (66). A cutting blade (68) is hinged in the storage slot (67).

9. A supercritical fluid extraction method for osmanthus components, characterized in that, It uses a supercritical fluid extraction device for osmanthus components as described in any one of claims 1-8 to extract osmanthus using supercritical fluid. The extraction process for osmanthus includes the following steps: S1: The osmanthus material is filled into the inner cavity (32) of the storage box (31) by manual or automatic equipment; S2: The feeding assembly (2) delivers supercritical fluid into the extraction vessel (1), and the supercritical fluid extracts the osmanthus material; S3: Osmanthus material accumulates at the top of the storage box (31). Due to the rotating part (34) and gravity, the storage box (31) flips inside the extraction vessel (1). S4: After the storage box (31) is turned over, the unblocking part (4) unblocks the through hole (33); S5: After the dredging is completed, the dispersing component (6) cuts and crushes the dregs cake in the inner cavity (32) of the storage box (31).

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