A continuous countercurrent extraction method and device for removing chlorogenic acid from sunflower meal

Abstract

This invention relates to the field of sunflower seed meal processing technology, and particularly to a continuous countercurrent extraction method and apparatus for removing chlorogenic acid from sunflower seed meal. The method includes an extraction tower with a feed inlet and a liquid inlet connected to the upper and lower sides of its sidewalls, and a liquid outlet and a liquid inlet connected to the upper and lower ends of the tower, respectively. It also includes a high-efficiency extraction mechanism and a promoting mechanism. This invention provides a continuous countercurrent extraction method and apparatus for removing chlorogenic acid from sunflower seed meal. The invention utilizes the fluid kinetic energy of the rising solvent to drive a memory elastic sheet to automatically reciprocate and deform, periodically squeezing and kneading the sunflower seed meal. This promotes micro-rupture of the cell walls, significantly increasing the chlorogenic acid dissolution rate. Simultaneously, the flow velocity oscillation caused by deformation forcibly loosens the meal layer, effectively eliminating bridging and agglomeration, ensuring continuous long-term operation without clogging. The entire process requires no external power source, has a simple and reliable structure, and low energy consumption.

Description

Technical Field

[0001] This invention relates to the field of sunflower seed meal processing technology, specifically to a continuous countercurrent extraction method and apparatus for removing chlorogenic acid from sunflower seed meal. Background Technology

[0002] In the continuous countercurrent extraction of chlorogenic acid from sunflower seed meal, the solid meal and solvent flow countercurrently in the tower, achieving contact mass transfer through multi-stage trays or a fixed bed. However, the internal components of conventional extraction towers are mostly static sieve plates or packed beds. The solid and liquid phases rely solely on natural solvent permeation and concentration gradient diffusion for the dissolution of chlorogenic acid. Furthermore, because sunflower seed meal is rich in plant gums and fibers, highly viscous particles are prone to bridging and agglomeration at the sieve plates, causing blockage of the flow channels in the tower. This necessitates frequent shutdowns for cleaning, severely impacting continuous operation.

[0003] To address these issues, existing technologies have attempted to introduce externally driven pulsating or vibrating trays to enhance mass transfer and reduce clogging by applying periodic disturbances to the solid-liquid system. However, these devices rely on external power sources such as cylinders, motors, or pulse pumps, resulting in complex structures, high requirements for sealing and explosion-proofing, and high energy consumption. More importantly, their motion modes are mostly unidirectional reciprocating vibrations, which can only produce overall compression and loosening of the particle bed and cannot achieve complex mechanical actions such as rubbing and twisting of materials at the microscopic level. Consequently, their effect on promoting micro-rupture of cell walls and release of active ingredients is limited. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a continuous countercurrent extraction method and apparatus for removing chlorogenic acid from sunflower seed meal.

[0005] This invention adopts the following technical solution: a continuous countercurrent extraction device for removing chlorogenic acid from sunflower seed meal, comprising an extraction tower, wherein the upper and lower sides of the extraction tower are respectively connected to a feed inlet and a liquid inlet 1, and the upper and lower ends of the extraction tower are respectively connected to a liquid outlet and a liquid inlet 2, and further comprising: The high-efficiency extraction mechanism is capable of automatically and repeatedly kneading sunflower seed meal, and the high-efficiency extraction mechanism is set inside the extraction tower. And a promoting mechanism that can improve the efficiency of sunflower seed meal extraction, said promoting mechanism being disposed on the high-efficiency extraction mechanism.

[0006] As a further description of the above technical solution: the high-efficiency extraction mechanism includes an upper pressure cone plate, which is fixed to the inner wall of the extraction tower. The upper pressure cone plate is located below the feed inlet. A memory elastic sheet is provided on the lower side of the upper pressure cone plate. The memory elastic sheet is located above the liquid inlet. A fixed ring plate is fixed to the outer wall of the memory elastic sheet. A rotating ring is fixed to the outer wall of the fixed ring plate. The rotating ring is rotatably disposed inside the extraction tower. A torsion spring is fixed between the outer wall of the rotating ring and the extraction tower. A feed inlet is provided through the bottom end of the upper pressure cone plate. A corrugated block is fixed to the center of the upper end of the memory elastic sheet. The fixed ring plate... A liquid inlet is provided through the core. A compression magnetic plate is fixedly connected inside the memory elastic sheet. An insert block is abutted against one end of the compression magnetic plate near the fixed ring plate. The insert block is slidably disposed inside the fixed ring plate. A through-hole is provided on the insert block. A magnetic block one is fixedly connected to the upper side of the insert block near the compression magnetic plate. A magnetic block two is provided on the side of the insert block away from the compression magnetic plate. The magnetic block two is fixedly connected to the fixed ring plate. A through groove is provided inside the magnetic block two. The through groove connects the slide groove where the insert block is located to the outside of the extraction tower. Connecting rings are fixedly connected to the upper and lower ends of the fixed ring plate. The connecting rings abut against the inner wall of the extraction tower.

[0007] As a further description of the above technical solution: the promoting mechanism includes a top frame, and the memory elastic sheet is provided with top frames on both the upper and lower sides. The top frame is fixed to the inner wall of the extraction tower. A fixing sleeve is fixed to the upper end of the memory elastic sheet, and a slanted slider is fixed to the upper end of the fixing sleeve. A slanted sliding surface is provided at the upper end of the slanted slider.

[0008] As a further description of the above technical solution: the diameter of the feed inlet is larger than that of sunflower seed meal, and the diameter of the liquid inlet is smaller than that of sunflower seed meal.

[0009] As a further description of the above technical solution: the liquid inlet is provided in a ring with several equally spaced openings.

[0010] As a further description of the above technical solution: the opposite ends of the magnetic block two and the insert block can generate an attractive force, and the attractive force between the squeezing magnetic plate and the magnetic block is greater than the attractive force between the magnetic block two and the insert block.

[0011] As a further description of the above technical solution: when the top frame presses the inclined slider, the inclined slider can drive the fixed sleeve to rotate.

[0012] As a further description of the above technical solution: the width of the inclined slider is greater than the width of the bottom end of the upper top frame.

[0013] Furthermore, the present invention adopts the following technical solution, including the following steps: S1. Connect inlet one or inlet two to the inlet so that the solvent can enter the extraction tower from the bottom. Connect the feed inlet to the feed point so that the sunflower seed meal can enter the extraction tower from the top. S2. Sunflower seed meal can fall through the feed inlet between the upper pressure cone plate and the memory elastic sheet. When the solvent flows from bottom to top, the solvent will push the memory elastic sheet upward. The top of the memory elastic sheet will squeeze part of the sunflower seed meal. The squeezing can cause the cell wall to rupture slightly. S3. The memory elastic sheet is concave downwards, which increases the channel size. The solvent quickly flushes the extracted chlorogenic acid out of the outlet and can eliminate bridging and clumping of high-viscosity sunflower seed meal.

[0014] This invention provides an improved continuous countercurrent extraction method and apparatus for removing chlorogenic acid from sunflower seed meal, which has the following improvements and advantages compared with the prior art: Firstly, it enhances mass transfer and promotes release. The memory elastic sheet undergoes periodic convex and concave deformation under the impetus of the solvent, repeatedly squeezing the sunflower seed meal, causing micro-rupture of the cell wall, reducing the diffusion resistance of chlorogenic acid. At the same time, it is combined with the rotating and kneading of the corrugated block to achieve a compound mechanical action of squeezing and kneading, which significantly improves the extraction efficiency. Secondly, it is anti-clogging and self-cleaning. The switching of the memory elastic sheet causes violent oscillation of the flow rate at the solid-liquid interface, which forcibly loosens the compacted meal layer, eliminates the bridging and clumping problems of high-viscosity materials, and enables long-term continuous operation without clogging, reducing the frequency of shutdown for cleaning. Thirdly, it features energy-saving and self-sustaining oscillation. The entire deformation process relies solely on the fluid kinetic energy of the rising solvent, eliminating the need for external power sources such as motors, cylinders, or pulse generators. The structure is simple and reliable, forming a closed-loop self-sustaining oscillation, which reduces equipment costs and operating energy consumption. In summary, this invention utilizes the fluid kinetic energy of rising solvent to drive the memory elastic sheet to automatically reciprocate convex and concave deformation, periodically squeezing and kneading sunflower seed meal to promote micro-rupture of cell walls and significantly increase the dissolution rate of chlorogenic acid. At the same time, the flow velocity oscillation caused by deformation forcibly loosens the meal layer, effectively eliminating bridging and clumping, ensuring continuous long-term operation without clogging. The entire process requires no external power source, has a simple and reliable structure, and low energy consumption. It is a novel countercurrent extraction technology that integrates high-efficiency extraction, self-cleaning, and energy saving. Attached Figure Description

[0015] The present invention will be further explained below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a three-dimensional sectional view of the extraction tower provided in an embodiment of the present invention; Figure 3 A schematic diagram of the high-efficiency extraction mechanism provided in an embodiment of the present invention; Figure 4 A schematic diagram of the promoting mechanism provided in an embodiment of the present invention; Figure 5This is a schematic diagram of the oblique slider provided in an embodiment of the present invention; Figure 6 for Figure 2 Enlarged view of point A in the middle; Figure 7 for Figure 3 Enlarged view of point B in the middle; Figure 8 for Figure 5 A magnified view of point C in the middle.

[0016] In the diagram: 1. Extraction tower; 2. Inlet 1; 3. Feed inlet; 4. Outlet; 5. High-efficiency extraction mechanism; 51. Upper pressure cone plate; 52. Memory elastic sheet; 53. Fixed ring plate; 54. Feed inlet; 55. Corrugated block; 56. Inlet; 57. Insert block; 58. Connecting hole; 59. Extrusion magnetic plate; 510. Magnetic block 1; 511. Magnetic block 2; 512. Connecting groove; 513. Connecting ring; 6. Promoting mechanism; 61. Top frame; 62. Fixed sleeve; 63. Inclined slider; 64. Inclined sliding surface; 65. Rotating ring; 66. Torsion spring; 7. Inlet 2. Detailed Implementation

[0017] To make the technical means, creative features, objectives, and effects of this invention readily understandable, the invention is further described below with reference to specific illustrations. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0018] Please see Figure 1 - Figure 8 This invention provides a technical solution: a continuous countercurrent extraction method and apparatus for removing chlorogenic acid from sunflower seed meal, comprising an extraction tower 1, with a feed inlet 3 and a liquid inlet 2 respectively connected to the upper and lower sides of the sidewall of the extraction tower 1, and a liquid outlet 4 and a liquid inlet 7 respectively connected to the upper and lower ends of the extraction tower 1, and further comprising: The high-efficiency extraction mechanism 5 is capable of automatically and repeatedly kneading the sunflower seed meal. The high-efficiency extraction mechanism 5 is located inside the extraction tower 1. And a promoting mechanism 6, which can improve the efficiency of sunflower seed meal extraction, is installed on the high-efficiency extraction mechanism 5.

[0019] Specifically, to enhance mass transfer and promote release, the memory elastic sheet 52 undergoes periodic convex-concave deformation under the impetus of the solvent, repeatedly squeezing the sunflower seed meal, causing micro-rupture of the cell wall, reducing the diffusion resistance of chlorogenic acid, and at the same time, it works in conjunction with the rotating and kneading of the corrugated block 55 to achieve a combined mechanical action of squeezing and kneading, which significantly improves the extraction efficiency.

[0020] Anti-clogging and self-cleaning, the memory elastic sheet 52 state switching causes violent oscillation of the solid-liquid interface flow rate, forcibly loosening the compacted meal layer, eliminating the bridging and clumping problems of high-viscosity materials, realizing long-term continuous operation without clogging, and reducing the frequency of shutdown for cleaning.

[0021] Energy-saving self-sustaining oscillation: The entire deformation process relies solely on the fluid kinetic energy of the rising solvent, eliminating the need for external power sources such as motors, cylinders, or pulse generators. The structure is simple and reliable, forming a closed-loop self-sustaining oscillation, thus reducing equipment costs and operating energy consumption.

[0022] In another embodiment of the present invention, the high-efficiency extraction mechanism 5 includes an upper pressure cone plate 51, which is fixed to the inner wall of the extraction tower 1. The upper pressure cone plate 51 is located below the feed inlet 3. A memory elastic sheet 52 is provided on the lower side of the upper pressure cone plate 51. The memory elastic sheet 52 is located above the liquid inlet 2. A fixing ring plate 53 is fixed to the outer wall of the memory elastic sheet 52. A rotating ring 65 is fixed to the outer wall of the fixing ring plate 53. The rotating ring 65 is rotatably disposed in the extraction tower 1. A torsion spring 66 is fixed between the outer wall of the rotating ring 65 and the extraction tower 1. A feed inlet 54 is provided through the bottom end of the upper pressure cone plate 51. A corrugated block 55 is fixed to the center of the upper end of the memory elastic sheet 52. A liquid inlet 56 is provided through the fixing ring plate 53. A compression magnetic plate 59 is fixedly connected inside the memory elastic sheet 52. An insert block 57 abuts against one end of the compression magnetic plate 59 near the fixed ring plate 53. The insert block 57 is slidably disposed inside the fixed ring plate 53. A through hole 58 is provided through the insert block 57. A magnetic block 1 510 is fixedly connected to the upper side of the end of the insert block 57 near the compression magnetic plate 59. A magnetic block 2 511 is provided on the side of the insert block 57 away from the compression magnetic plate 59. The magnetic block 2 511 is fixedly connected inside the fixed ring plate 53. A through groove 512 is provided inside the magnetic block 2 511. The through groove 512 connects the slide groove where the insert block 57 is located to the outside of the extraction tower 1. Connecting rings 513 are fixedly connected to both the upper and lower ends of the fixed ring plate 53. The connecting rings 513 abut against the inner wall of the extraction tower 1.

[0023] The diameter of feed inlet 54 is larger than that of sunflower seed meal, while the diameter of liquid inlet 56 is smaller than that of sunflower seed meal.

[0024] The liquid inlet 56 has several inlets arranged in a ring at equal intervals.

[0025] The opposing ends of magnetic block 511 and insert block 57 can generate an attractive force, and the attractive force between magnetic plate 59 and magnetic block 510 is greater than the attractive force between magnetic block 511 and insert block 57.

[0026] Specifically, to enhance mass transfer and promote release, the memory elastic sheet 52 undergoes periodic convex-concave deformation under the impetus of the solvent, repeatedly squeezing the sunflower seed meal, causing micro-rupture of the cell wall, reducing the diffusion resistance of chlorogenic acid, and at the same time, it works in conjunction with the rotating and kneading of the corrugated block 55 to achieve a combined mechanical action of squeezing and kneading, which significantly improves the extraction efficiency.

[0027] In another embodiment of the present invention, the promoting mechanism 6 includes a top frame 61. The memory elastic sheet 52 is provided with top frames 61 on both the upper and lower sides. The top frames 61 are fixed to the inner wall of the extraction tower 1. A fixing sleeve 62 is fixed to the upper end of the memory elastic sheet 52. A slanted slider 63 is fixed to the upper end of the fixing sleeve 62. A slanted sliding surface 64 is provided at the upper end of the slanted slider 63.

[0028] When the top frame 61 presses against the inclined slider 63, the inclined slider 63 can drive the fixed sleeve 62 to rotate.

[0029] The width of the inclined slider 63 is greater than the width of the bottom end of the upper top frame 61.

[0030] Specifically, the anti-clogging and self-cleaning mechanism, along with the memory elastic sheet 52's state switching causing violent oscillations in the solid-liquid interface flow rate, forcibly loosens the compacted meal layer, eliminates bridging and clumping problems of highly viscous materials, enables long-term continuous operation without clogging, and reduces the frequency of downtime for cleaning.

[0031] Energy-saving self-sustaining oscillation: The entire deformation process relies solely on the fluid kinetic energy of the rising solvent, eliminating the need for external power sources such as motors, cylinders, or pulse generators. The structure is simple and reliable, forming a closed-loop self-sustaining oscillation, thus reducing equipment costs and operating energy consumption.

[0032] Working principle: When using this device, connect inlet 2 or inlet 7 to the inlet pipe to allow the solvent to enter the extraction tower 1 from the bottom. Connect inlet 3 to the feed inlet to allow sunflower seed meal to enter the extraction tower 1 from the top. After the sunflower seed meal enters from the top, the solvent will continuously flow upwards, passing through the sunflower seed meal, so that the final extract flows out from the outlet 4 on the top, completing the effective extraction of chlorogenic acid. The memory elastic sheet 52 has memory properties and can be in a convex or concave state. The sunflower seed meal can fall through inlet 54 between the upper pressure cone plate 51 and the memory elastic sheet 52. When the solvent flows upwards, the solvent will push the memory elastic sheet 52 upwards. The top of the memory elastic sheet 52 will squeeze part of the sunflower seed meal. This squeezing can cause micro-rupture of the cell walls, significantly reducing the diffusion resistance of chlorogenic acid. When the memory elastic sheet 52 moves to the top, it will be blocked by the top frame 61. At this time, the squeezing magnetic plate 59 moves upward with the memory elastic sheet 52. The squeezing magnetic plate 59 attracts the magnetic block 510, causing the insert block 57 to slide towards the side of the memory elastic sheet 52, so that the connecting hole 58 and the liquid inlet 56 are connected. The solvent on the lower side will flow upward. At this time, the solvent will flow from the feed inlet 54 to the upper pressure cone plate 51. Since the upper end of the memory elastic sheet 52 is close to the feed inlet 54 at the bottom of the upper pressure cone plate 51, the channel becomes smaller, and the pressure between the upper pressure cone plate 51 and the memory elastic sheet 52 will increase. The large liquid pressure causes the memory elastic sheet 52 to be pressed downwards, resulting in a downward indentation. This enlarges the channel, allowing the solvent to quickly flush the extracted chlorogenic acid out of the outlet 4. As the memory elastic sheet 52 indents, the compression magnet 59 is positioned below, causing it to press against the insert block 57. The compression magnet 59 moves away from the first magnet 510, causing the insert block 57 to move towards the second magnet 511. The insert block 57 is attracted by the second magnet 511, causing the connecting hole 58 and the inlet 56 to misalign. This increases the pressure on the lower side of the memory elastic sheet 52, and the solvent again presses the memory elastic sheet 52 upwards. This process repeats, allowing the memory elastic sheet 52 to move automatically with the solvent. When the memory elastic sheet 52 bulges upwards... During the process, the sunflower seed meal can fully contact the solvent remaining between the upper pressure cone plate 51 and the memory elastic sheet 52. When the memory elastic sheet 52 is concave, it can quickly push the extract upward, which can prevent the solvent flow rate from being too fast and thus prevent insufficient extraction, thereby improving the extraction efficiency. Furthermore, the repeated compression of the sunflower seed meal by the memory elastic sheet 52 can promote micro-rupture of the cell wall, further improving the extraction efficiency. Moreover, the state switching of the memory elastic sheet 52 causes violent oscillation of the solid-liquid interface flow rate, which effectively increases the diffusion rate of the solvent on the particle surface. In addition, the periodic convex-concave switching of the memory elastic sheet 52 forcibly loosens the compacted meal layer, and the high-speed solvent penetration eliminates the bridging and clumping of the highly viscous sunflower seed meal, achieving long-term operation without clogging. When the memory elastic sheet 52 bulges upward, the upper side will squeeze the inclined sliding surface 64 on the inclined slider 63, causing the inclined slider 63 to drive the fixed sleeve 62 and the top frame 61 to rotate, so that the corrugated block 55 at the top of the memory elastic sheet 52 can rotate. This allows for simultaneous squeezing and kneading of the sunflower seed meal, further improving the overall extraction efficiency. When the memory elastic sheet 52 bulges downward, it automatically resets through the setting of the torsion spring 66. The only energy source is the kinetic energy of the solvent flowing upward, requiring no external power such as motors, cylinders, or pulse generators. The fluid pressure acts periodically, forming a closed-loop self-sustaining oscillation, saving costs, with a simple structure and low cost.

[0033] A continuous countercurrent extraction method for removing chlorogenic acid from sunflower seed meal includes the following steps: S1. Connect the liquid inlet 1 2 or liquid inlet 2 7 to the liquid inlet so that the solvent can enter the extraction tower 1 from the bottom. Connect the feed inlet 3 to the feed inlet so that the sunflower seed meal can enter the extraction tower 1 from the top. S2. Sunflower seed meal can fall through the feed inlet 54 between the upper pressure cone plate 51 and the memory elastic sheet 52. When the solvent flows from bottom to top, the solvent will push the memory elastic sheet 52 upward. The top of the memory elastic sheet 52 will squeeze part of the sunflower seed meal. The squeezing can cause the cell wall to rupture slightly. S3, the memory elastic sheet 52 is concave downwards, which increases the channel size. The solvent quickly flushes the extracted chlorogenic acid out of the outlet 4 and can eliminate bridging and clumping of high-viscosity sunflower seed meal.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A continuous countercurrent extraction device for removing chlorogenic acid from sunflower seed meal, comprising an extraction tower (1), wherein the upper and lower sides of the extraction tower (1) are respectively connected to a feed inlet (3) and a liquid inlet (2), and the upper and lower ends of the extraction tower (1) are respectively connected to a liquid outlet (4) and a liquid inlet (7), characterized in that, Also includes: The high-efficiency extraction mechanism (5) can automatically and repeatedly knead the sunflower seed meal. The high-efficiency extraction mechanism (5) is set in the inner cavity of the extraction tower (1). And a promoting mechanism (6) that can promote the efficiency of sunflower seed meal extraction, said promoting mechanism (6) being disposed on the high-efficiency extraction mechanism (5).

2. The continuous countercurrent extraction apparatus for removing chlorogenic acid from sunflower seed meal according to claim 1, characterized in that: The high-efficiency extraction mechanism (5) includes an upper pressure cone plate (51), which is fixed to the inner wall of the extraction tower (1). The upper pressure cone plate (51) is located below the feed inlet (3). A memory elastic sheet (52) is provided on the lower side of the upper pressure cone plate (51). The memory elastic sheet (52) is located above the liquid inlet (2). A fixed ring plate (53) is fixed to the outer wall of the memory elastic sheet (52). A rotating ring (65) is fixed to the outer wall of the fixed ring plate (53). The rotating ring (65) is rotatably disposed inside the extraction tower (1). A torsion spring (66) is fixed between the outer wall of the rotating ring (65) and the extraction tower (1). A feed inlet (54) is provided through the bottom end of the upper pressure cone plate (51). A corrugated block (55) is fixed to the center of the upper end of the memory elastic sheet (52). A liquid inlet (56) is provided through the fixed ring plate (53). A pressing magnetic plate (59) is fixedly connected inside the plate (52). The end of the pressing magnetic plate (59) near the fixed ring plate (53) abuts against an insert (57). The insert (57) is slidably disposed inside the fixed ring plate (53). A through hole (58) is provided through the insert (57). A magnetic block one (510) is fixedly connected to the upper side of the end of the insert (57) near the pressing magnetic plate (59). A magnetic block two (511) is provided on the side of the insert (57) away from the pressing magnetic plate (59). The magnetic block two (511) is fixedly connected inside the fixed ring plate (53). A through groove (512) is provided inside the magnetic block two (511). The through groove (512) connects the slide groove where the insert (57) is located to the outside of the extraction tower (1). A connecting ring (513) is fixedly connected to both the upper and lower ends of the fixed ring plate (53). The connecting ring (513) abuts against the inner wall of the extraction tower (1).

3. The continuous countercurrent extraction apparatus for removing chlorogenic acid from sunflower seed meal according to claim 2, characterized in that: The promoting mechanism (6) includes a top frame (61). The memory elastic sheet (52) is provided with a top frame (61) on both the upper and lower sides. The top frame (61) is fixed to the inner wall of the extraction tower (1). A fixing sleeve (62) is fixed to the upper end of the memory elastic sheet (52). A sliding block (63) is fixed to the upper end of the fixing sleeve (62). A sliding surface (64) is opened at the upper end of the sliding block (63).

4. The continuous countercurrent extraction apparatus for removing chlorogenic acid from sunflower seed meal according to claim 3, characterized in that: The diameter of the feed inlet (54) is larger than that of sunflower seed meal, and the diameter of the liquid inlet (56) is smaller than that of sunflower seed meal.

5. The continuous countercurrent extraction apparatus for removing chlorogenic acid from sunflower seed meal according to claim 4, characterized in that: The liquid inlet (56) is provided in a ring with several equally spaced openings.

6. The continuous countercurrent extraction apparatus for removing chlorogenic acid from sunflower seed meal according to claim 5, characterized in that: The opposing ends of the second magnetic block (511) and the insert (57) can generate an attractive force, and the attractive force between the extrusion magnetic plate (59) and the first magnetic block (510) is greater than the attractive force between the second magnetic block (511) and the insert (57).

7. The continuous countercurrent extraction apparatus for removing chlorogenic acid from sunflower seed meal according to claim 6, characterized in that: When the top frame (61) presses the inclined slider (63), the inclined slider (63) can drive the fixed sleeve (62) to rotate.

8. The continuous countercurrent extraction apparatus for removing chlorogenic acid from sunflower seed meal according to claim 7, characterized in that: The width of the inclined slider (63) is greater than the width of the bottom end of the upper top frame (61).

9. A continuous countercurrent extraction method for removing chlorogenic acid from sunflower seed meal, based on the continuous countercurrent extraction apparatus for removing chlorogenic acid from sunflower seed meal as described in claim 8, characterized in that: Includes the following steps: S1. Connect the liquid inlet 1 (2) or liquid inlet 2 (7) to the liquid inlet so that the solvent can enter the extraction tower (1) from the bottom. Connect the feed inlet (3) to the feed inlet so that the sunflower seed meal can enter the extraction tower (1) from the top. S2. Sunflower seed meal can fall through the feed inlet (54) between the upper pressure cone plate (51) and the memory elastic sheet (52). When the solvent flows from bottom to top, the solvent will push the memory elastic sheet (52) upward. The top of the memory elastic sheet (52) will squeeze part of the sunflower seed meal. The squeezing can cause the cell wall to rupture slightly. S3. The memory elastic sheet (52) is concave downwards, which increases the channel size. The solvent quickly flushes the extracted chlorogenic acid out of the outlet (4) and can eliminate the bridging and clumping of high-viscosity sunflower seed meal.

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