Extraction device and process for producing natto ginkgo leaf extract capsules

Abstract

The present invention provides an extraction device and process for producing natto ginkgo leaf extract capsules, which belongs to the technical field of plant effective component extraction. The extraction device includes an extraction cylinder, a stirring mechanism, and an extrusion and filtration mechanism. The extrusion and filtration mechanism includes an extrusion cover and a linear driver. The extrusion cover has an annular end face and a funnel. The funnel wall of the funnel is surrounded by a filter screen. The extraction cylinder is arranged in a shell. The lower end of the cylinder wall is movably connected with a bottom cover. A locking mechanism is arranged in the shell. The locking mechanism includes a connecting frame, a pull rod, a locking ring, and a driving member. An unlocking groove is provided on the locking ring, and an unlocking member is fixed on the connecting frame. The extrusion and filtration mechanism of the present invention can repeatedly extrude the filter residue, and the stirring mechanism can also flip the filter residue, so that the ginkgo leaf and the extraction mixture are completely separated. The bottom cover can be raised and lowered. The bottom cover rises and is sealed with the cylinder wall, which can be used for extracting the ginkgo leaf. The bottom cover descends, leaving a gap between the bottom cover and the cylinder wall, which is convenient for slag discharge.

Description

Technical Field

[0001] The invention relates to the technical field of plant effective component extraction, and in particular to an extraction device and process for producing natto ginkgo leaf extract capsules. Background Art

[0002] The main active ingredients of Natto Ginkgo Leaf Extract Capsules are Natto freeze-dried powder and Ginkgo Leaf Extract. Nattokinase in Natto has the effect of dissolving blood clots, and the ginkgo flavonoids and ginkgo diterpenoid compounds in Ginkgo Leaf have the effects of antioxidant activity and anti-inflammatory activity, so that Natto Ginkgo Leaf Extract Capsules have the effects of improving brain blood circulation, lowering blood lipids and dissolving blood clots. Among them, Natto freeze-dried powder is generally made of small-grain soybeans as the main raw material through soaking, boiling, crushing, fermentation, vacuum freeze drying and other processes. The commonly used extraction method of Ginkgo Leaf Extract is solvent extraction, which uses Ginkgo Leaf as the main raw material and is produced through main processes such as crushing, leaching, filtering, concentrating, and spray drying. When the existing extraction device is used to extract and separate Ginkgo Leaf, it is usually to directly put Ginkgo Leaf into the extraction container, stir the Ginkgo Leaf to fully contact the extraction solvent, thereby extracting the Ginkgo Leaf, and filtering and separating the extraction mixture and the Ginkgo Leaf after the extraction is completed.

[0003] However, the existing extraction device usually separates the ginkgo leaves and the extraction mixture by filtering them directly through a filter screen, and the separation only relies on the fluidity of the extraction mixture under the action of gravity. The liquid content in the separated ginkgo leaves is large, and the extraction mixture is wasted a lot.

[0004] For example, the patent application document with the publication number CN116943273A discloses a device for extracting ginkgo leaf flavonoids from ginkgo leaves, which includes an extraction shell, a stirring structure, a filtering structure and a spraying structure. The device can crush the ginkgo leaves by using a crushing shaft assembly, and the spraying mechanism sprays the extraction solvent. The ginkgo leaves and the extraction solvent are stirred and extracted by the stirring structure in the extraction shell, and then filtered by the filtering mechanism. The filtered ginkgo leaves contain a large amount of extraction mixed liquid, which affects the extraction rate of the extract in the ginkgo leaves; and it is not convenient to clean the residue in the extraction cylinder after separation.

[0005] Therefore, it is necessary to develop an extraction device and process for producing natto ginkgo leaf extract capsules to solve the technical problems in the prior art of incomplete separation of ginkgo leaves and the extraction mixture and inconvenience in cleaning the residues in the extraction cylinder after separation. Summary of the invention

[0006] In view of this, the present invention provides an extraction device and process for producing natto ginkgo leaf extract capsules, aiming to solve the technical problems in the prior art that the ginkgo leaf and the extraction mixture are not completely separated and it is inconvenient to clean the residues in the extraction cylinder after separation.

[0007] In order to solve the above technical problems, on the one hand, the present invention provides an extraction device for producing natto ginkgo leaf extract capsules, comprising an extraction cylinder and a stirring mechanism arranged in the extraction cylinder, wherein an extrusion filtering mechanism is arranged in the extraction cylinder, and when the extrusion filtering mechanism performs extrusion filtering on the extraction mixed liquid, the stirring mechanism stops working;

[0008] The extrusion filtering mechanism comprises an extrusion cover abutting against the wall of the extraction cylinder, and a linear driver arranged at the upper end of the extraction cylinder and capable of driving the extrusion cover to rise and fall; the extrusion cover has an annular end surface capable of extruding the filter residue and a funnel arranged inside the annular end surface, the lower end of the funnel is fixedly connected to a drain pipe, and the funnel wall of the funnel is surrounded by a filter screen, and is used to filter the extraction mixed liquid and enable the extraction mixed liquid to be discharged through the drain pipe;

[0009] The extraction cylinder is arranged in the shell, and the lower end of the cylinder wall is movably connected with the bottom cover, and a locking mechanism capable of locking the bottom cover is arranged in the shell, and the locking mechanism comprises a connecting frame abutting against and supporting the bottom cover, a pull rod fixedly connected to the connecting frame and connected to the shell through an elastic member, a locking ring rotatably connected to the inner wall of the shell, and a driving member driving the locking ring to rotate; an unlocking groove is arranged on the locking ring, and an unlocking member capable of being inserted into the unlocking groove is fixedly arranged on the connecting frame, and the unlocking member is inserted into the unlocking groove to unlock the connecting frame, and the squeezing cover can push the bottom cover and the connecting frame to descend; the unlocking member is disengaged from the unlocking groove to lock the connecting frame.

[0010] By adopting the above technical scheme, before extraction, there is no material in the extraction cylinder, the elastic member drives the pull rod and the connecting frame to reset, so that the edge of the connecting frame is located on the locking ring, the driving member drives the locking ring to rotate until the unlocking member is disengaged from the unlocking groove, the locking ring locks the connecting frame, the connecting frame supports the bottom cover, so that the bottom cover and the cylinder wall are sealed, the ginkgo leaves and the extraction solvent are put into the extraction cylinder, the stirring mechanism works, and the ginkgo leaves are extracted; after extraction, the stirring mechanism stops working, the linear drive drives the extrusion cover to descend, the extraction mixture is filtered through the funnel and discharged through the discharge pipe, after the annular end face squeezes the filter residue, the linear drive drives the extrusion cover to move up, the stirring mechanism stops working after working for a period of time, the linear drive drives the extrusion cover to descend, and the filter residue is repeatedly squeezed, which can reduce the liquid content in the filter residue. At the same time, the stirring mechanism can flip the filter residue, which is conducive to the extrusion cover to evenly squeeze out the extraction mixture in the filter residue, further reduce the liquid content in the filter residue, and completely separate the ginkgo leaves from the extraction mixture. During the descent of the extrusion cover, the cylinder wall of the extraction cylinder can be scraped and the cylinder wall of the extraction cylinder can be cleaned. After extrusion, the driving member drives the locking ring to rotate until the unlocking member is located in the unlocking groove, unlocking the connecting frame, and the bottom cover and the cylinder wall are separated. The linear drive drives the extrusion cover to descend, and the extrusion cover pushes the bottom cover to descend. The gap between the bottom cover and the cylinder wall increases, making it easier for the filter residue to be discharged from the gap.

[0011] The first driving member drives the first stirring frame and the second stirring frame to stir through the gear transmission assembly to extract the ginkgo leaves; after extraction, the linear driver pushes the extrusion cover down, the extraction mixture is filtered through the funnel and discharged through the discharge pipe, the annular end face squeezes the filter residue, the linear driver drives the extrusion cover to move up, the first stirring blade and the second stirring blade flip the filter residue, the scraper one cleans the filter screen, and the scraper two cleans the annular end face, then, the linear driver drives the extrusion cover down to repeatedly squeeze the filter residue, which can reduce the liquid content in the filter residue. At the same time, the first stirring blade and the first stirring blade can flip the filter residue, which is conducive to the extrusion cover to evenly squeeze out the extraction mixture in the filter residue, further reduce the liquid content in the filter residue, and completely separate the ginkgo leaves from the extraction mixture. During the descent of the extrusion cover, the wall of the extraction cylinder can be scraped. During the extrusion cover squeezing the filter residue, the scraper one and the scraper two rotate with the first stirring frame and the second stirring frame, and can scrape the filter screen and the annular end face respectively, without the need to clean the extraction cylinder separately, thereby improving the extraction efficiency.

[0012] Preferably, a top cover is fixedly connected to the upper end of the cylinder wall, and a liquid inlet for conveying extraction solvent is provided on the top cover. The lower end of the liquid inlet is sealed, and a liquid outlet that can extend into the funnel is opened on the side of the liquid inlet. The extraction cylinder is provided with a feed port for adding raw materials.

[0013] By adopting the above technical scheme, the extraction solvent enters the extraction cylinder from the liquid inlet, and the ginkgo leaves are put into the extraction cylinder from the feed port to mix with the extraction solvent, thereby realizing the extraction of the ginkgo leaves; when the extraction solvent is transported, the linear drive drives the extrusion cover to rise, and the liquid outlet extends into the funnel, and the extraction solvent is discharged from the liquid outlet, flows into the extraction cylinder through the funnel to reversely flush the filter screen, thereby reducing the blockage of the filter screen.

[0014] Preferably, the stirring mechanism comprises a first stirring frame and a second stirring frame arranged on the bottom cover, a driver for driving the first stirring frame and the second stirring frame to rotate synchronously, and a gear transmission assembly.

[0015] By adopting the above technical solution, the driver and the gear transmission assembly drive the first stirring frame and the second stirring frame to rotate. During extraction, the first stirring frame and the second stirring frame stir the raw materials, which is beneficial to improving the extraction efficiency; after extraction, when the extrusion cover squeezes the filter residue, the stirring mechanism stops working, and after the linear driver drives the extrusion cover to move upward, the stirring mechanism works, and the first stirring frame and the second stirring frame flip the filter residue, which is beneficial for the extrusion cover to evenly squeeze out the extraction mixture in the filter residue, further reduce the liquid content in the filter residue, and completely separate the ginkgo leaves from the extraction mixture.

[0016] Preferably, the first stirring frame and the second stirring frame both include a stirring shaft and a first stirring blade or a second stirring blade, and a scraper 1 capable of cleaning the filter is fixedly arranged on the side of the first stirring blade; a scraper 2 capable of cleaning the annular end surface is fixedly arranged on the upper end of the second stirring blade.

[0017] By adopting the above technical solution, when discharging slag, the extrusion cover pushes the bottom cover down, the driver drives the first stirring frame and the second stirring frame to rotate, and the scraper 1 and the scraper 2 rotate with the first stirring frame and the second stirring frame, which can scrape the filter screen and the annular end surface respectively, without the need to clean the extraction cylinder separately, thereby improving the extraction efficiency.

[0018] Preferably, the gear transmission assembly includes an end face gear fixedly mounted below the bottom cover, a gear ring, a first gear fixedly mounted on the driving shaft of the driver and meshing with the end face gear, and a second gear fixedly mounted on the lower end of the stirring shaft and meshing with the gear ring, and the stirring shaft and the bottom cover are rotationally connected.

[0019] By adopting the above technical solution, the driver drives the first gear to rotate, the first gear drives the end gear to rotate, the end gear drives the bottom cover to rotate, while the bottom cover rotates, it drives the gear ring to rotate, the gear ring drives the second gear to rotate, and the second gear drives the stirring shaft to rotate and revolve. During extraction, the first stirring rack and the second stirring rack stir and mix the raw materials and the extraction solution, which is beneficial to the extraction of ginkgo leaves; after the extraction is completed, after the extrusion cover squeezes the filter residue, the first stirring rack and the second stirring rack flip the filter residue, which is beneficial to the extrusion of the extraction mixed solution; during slag discharge, the gap between the bottom cover and the cylinder wall increases, and as the bottom cover rotates, the filter residue on the bottom cover is thrown from the gap into the shell, which is beneficial to slag discharge.

[0020] Preferably, a steel ball capable of contacting the extrusion cover is rotatably connected to the upper end of the stirring shaft to reduce friction between the stirring shaft and the extrusion cover.

[0021] By adopting the above technical solution, the upper end surface of the steel ball is higher than the upper end surface of the stirring shaft. When the extrusion cover descends, it contacts the steel ball, making the friction between the stirring shaft and the extrusion cover rolling friction, thereby reducing the friction between the extrusion cover and the stirring shaft.

[0022] Preferably, a liquid discharge port and a material discharge port are provided on the shell, a bearing is installed in the middle part of the bottom cover, and the liquid discharge pipe can pass through the bearing and the connecting frame and extend into the liquid discharge port.

[0023] By adopting the above technical solution, the filter residue enters the shell and is discharged through the discharge port, the discharge pipe passes through the bearing and the connecting frame, extends into the discharge port, and the extracted mixed liquid in the discharge pipe is discharged from the discharge port.

[0024] In another aspect, the present invention provides an extraction process for producing natto ginkgo leaf extract capsules, using the extraction device for producing natto ginkgo leaf extract capsules, comprising the following steps:

[0025] Step 1: The elastic member drives the pull rod and the connecting frame to reset, the driving member drives the locking ring to rotate until the unlocking member is disengaged from the unlocking groove, the locking ring locks the connecting frame, and the bottom cover seals the cylinder wall;

[0026] Step 2: Put the ginkgo leaves and the extraction solvent into the extraction cylinder, and start the stirring mechanism to extract the ginkgo leaves;

[0027] Step 3: After extraction, the stirring mechanism stops working, the linear drive pushes the extrusion cover down, the extraction mixture is filtered through the funnel and discharged through the discharge pipe, the annular end face squeezes the filter residue, and the linear drive drives the extrusion cover to move up, the stirring mechanism stops working after working for a period of time, the linear drive pushes the extrusion cover down, and the filter residue is repeatedly squeezed until the extraction mixture is discharged;

[0028] Step 4: The driving member drives the locking ring to rotate until the unlocking member is located in the unlocking groove, unlocks the connecting frame, and the bottom cover and the cylinder wall are separated. The linear drive drives the extrusion cover to descend, and the extrusion cover pushes the bottom cover to descend, so that the slag in the extraction cylinder is discharged.

[0029] By adopting the above technical solution, the linear drive drives the extrusion cover to descend to repeatedly extrude the filter residue, which can reduce the liquid content in the filter residue. At the same time, the first stirring blade and the second stirring blade can flip the filter residue, which is conducive to the extrusion cover to evenly squeeze out the extraction mixture in the filter residue, further reducing the liquid content in the filter residue, so that the ginkgo leaves and the extraction mixture are completely separated. During the descent of the extrusion cover, the wall of the extraction cylinder can be scraped. During the extrusion cover extruding the filter residue, the scraper 1 and the scraper 2 rotate with the first stirring frame and the second stirring frame, and can scrape the filter screen and the annular end face respectively, without the need to clean the extraction cylinder separately, thereby improving the extraction efficiency.

[0030] The beneficial effects of the above technical solution of the present invention are as follows:

[0031] 1. The extrusion filtering mechanism of the present invention can repeatedly extrude the filter residue, and the stirring mechanism can also flip the filter residue, thereby reducing the liquid content in the filter residue and completely separating the ginkgo leaves from the extraction mixture; when the extrusion cover descends, the filter residue on the wall of the extraction cylinder can be cleaned; the bottom cover can be raised and lowered, and when the bottom cover rises, it is sealed with the cylinder wall and can be used for ginkgo leaf extraction; when the bottom cover descends, a gap is left between the bottom cover and the cylinder wall, which is convenient for discharging the filter residue in the extraction cylinder.

[0032] 2. The extraction solvent input from the liquid inlet flows into the extraction cylinder through the funnel to reversely flush the filter to reduce filter blockage.

[0033] 3. During extraction, the first stirring rack and the second stirring rack stir and mix the raw materials and the extraction solution, which is beneficial to the extraction of ginkgo leaves; after the extraction is completed, the extrusion cover squeezes the filter residue, and the first stirring rack and the second stirring rack flip the filter residue to facilitate the extrusion of the extraction mixed liquid; during slag discharge, the gap between the bottom cover and the cylinder wall increases, and as the bottom cover rotates, the filter residue on the bottom cover is thrown from the gap into the shell, which is beneficial to slag discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A three-dimensional diagram of an extraction device for producing natto-gingko leaf extract capsules according to the present invention;

[0035] Figure 2 It is a cross-sectional view of an extraction device for producing natto-gingko leaf extract capsules of the present invention;

[0036] Figure 3 It is a structural schematic diagram of the unlocking block and the unlocking groove of the present invention in a locked state;

[0037] Figure 4 A cross-sectional view of the unlocking block and the unlocking groove of the present invention in an unlocking state;

[0038] Figure 5 for Figure 4 The enlarged view of point A in the middle;

[0039] Figure 6 It is a schematic structural diagram of the gear transmission assembly of the present invention.

[0040] In the figure: 1, extraction cylinder; 11, top cover; 12, cylinder wall; 13, bottom cover; 14, liquid inlet; 15, feed inlet; 16, liquid outlet; 17, bearing; 18, baffle; 2, shell; 21, inverted truncated cone-shaped cavity; 22, discharge port; 23, slope; 24, discharge port; 25, installation cavity; 3, extrusion filtration mechanism; 31, extrusion cover; 311, annular end face; 312, funnel; 313, discharge pipe; 32, linear drive; 4, stirring mechanism; 41, first stirring frame; 411, stirring shaft; 412, first stirring blade; 413, scraper 1; 4 2. Second stirring frame; 421. Second stirring blade; 422. Scraper 2; 423. Steel ball; 43. Driver; 44. Gear transmission assembly; 441. Face gear; 442. Gear ring; 443. First gear; 444. Second gear; 5. Locking mechanism; 51. Connecting frame; 511. Connecting ring; 512. Support plate; 513. Annular baffle; 514. Unlocking member; 52. Pull rod; 521. Elastic member; 53. Locking ring; 531. Unlocking groove; 54. Driver; 541. Gear ring; 542. Second driving motor; 543. Third gear. DETAILED DESCRIPTION

[0041] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be combined with the embodiments of the present invention. Figure 1-Figure 6 , the technical scheme of the embodiment of the present invention is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0042] Example

[0043] This embodiment provides an extraction device for producing natto ginkgo leaf extract capsules, such as Figure 2 and Figure 3 As shown, it includes an extraction cartridge 1 , a squeezing and filtering mechanism 3 , a stirring mechanism 4 and a locking mechanism 5 .

[0044] like Figure 1 and Figure 2 As shown, the extraction cylinder 1 provides extraction space for ginkgo leaves and extraction solvent. The extrusion and filtration mechanism 3 can repeatedly squeeze the filter residue after extraction, which is conducive to the complete separation of ginkgo leaves and the extraction mixture, and can filter the extraction mixture at the same time. The stirring mechanism 4 stirs the raw materials to improve the extraction efficiency; at the same time, the filter residue can be turned over to facilitate the uniform extrusion of the extraction mixture. The locking mechanism 5 limits the bottom cover 13 of the extraction cylinder 1, and the bottom cover 13 can be raised and lowered to facilitate the discharge of the filter residue.

[0045] like Figure 2 As shown, the extraction cylinder 1 comprises a top cover 11 , a cylinder wall 12 and a bottom cover 13 .

[0046] like Figure 2 As shown, the top cover 11 is fixedly mounted on the cylinder wall 12, and a liquid inlet 14 for conveying the extraction solvent is provided on the top cover 11, and a feed inlet 15 for feeding the raw material is provided on the cylinder wall 12, and the axis of the cylinder wall 12 extends in the up-down direction. The lower end of the liquid inlet 14 is sealed, and a liquid outlet 16 is provided on the side of the liquid inlet 14. The extraction solution conveyed into the liquid inlet 14 enters the extraction cylinder 1 through the liquid outlet 16, so as to be mixed with the raw material.

[0047] like Figure 2 and Figure 4 As shown, the bottom cover 13 is arranged at the lower end of the cylinder wall 12, and a bearing 17 is installed in the middle of the bottom cover 13 to facilitate the discharge of the extraction mixture. The bottom cover 13 can be raised and lowered. When the bottom cover 13 rises, it is sealed with the cylinder wall 12. Ginkgo leaves and extraction solvent are added into the extraction cylinder 1 to perform extraction. After the extraction is completed, the bottom cover 13 is lowered, and a gap is left between the bottom cover 13 and the cylinder wall 12 to facilitate the discharge of the filter residue from the gap.

[0048] like Figure 1 and Figure 2As shown, the extraction cylinder 1 is installed in the shell 2, which provides support for the extraction cylinder 1 and is convenient for storing the filter residue discharged from the extraction cylinder 1. The bottom of the shell 2 is provided with an inverted truncated cone-shaped cavity 21, which is convenient for collecting the filter residue. The side of the inverted truncated cone-shaped cavity 21 is provided with a discharge port 22. The bottom of the inverted truncated cone-shaped cavity 21 is provided with a slope 23 that tilts downward from the end away from the discharge port 22 to the end close to the discharge port 22, so that after the filter residue falls into the inverted truncated cone-shaped cavity 21, it slides obliquely from the slope 23 into the discharge port 22 to achieve discharge. The middle part of the inverted truncated cone-shaped cavity 21 is provided with a discharge port 24, which is used to discharge the extraction mixed liquid in the extraction cylinder 1.

[0049] like Figure 2 As shown, the extrusion filtering mechanism 3 includes an extrusion cover 31 and a linear drive 32 for driving the extrusion cover 31 to rise and fall.

[0050] like Figure 2 and Figure 3 As shown, the extrusion cover 31 is arranged in the extraction cylinder 1, and the extrusion cover 31 has an annular end face 311 that can extrude the filter residue and a funnel 312 arranged in the annular end face 311. The annular end face abuts against the cylinder wall 12, and the lifting and lowering of the extrusion cover 31 causes the annular end face to scrape the cylinder wall 12, which is used to clean the raw materials adhering to the cylinder wall 12. The lower end of the funnel 312 is fixedly connected with a drain pipe 313, and the axis of the drain pipe 313 extends in the up and down direction, which is used to discharge the extraction mixture. The funnel wall of the funnel 312 is surrounded by a filter screen, which is used to filter the extraction mixture and enable the extraction mixture to be discharged through the drain pipe 313. The linear drive 32 is fixedly installed on the top cover 11, and the driving shaft of the linear drive 32 passes through the top cover 11 and is fixedly connected to the annular end face of the extrusion cover 31. The linear drive 32 in this embodiment is a cylinder or a hydraulic cylinder.

[0051] like Figure 2 and Figure 3As shown, when adding materials, the linear drive 32 drives the extrusion cover 31 to rise, so that the liquid outlet 16 is located in the funnel 312, and the extraction solvent is transported to the liquid inlet 14. The extraction solvent reaches the extraction cylinder 1 through the filter screen of the funnel 312, and the filter screen is washed to reduce the blockage of the filter screen. The lower end of the liquid inlet 14 is sealed to prevent the extraction solvent from flowing into the drain pipe 313. In order to limit the rising position of the extrusion cover 31, a baffle 18 is fixedly installed on the liquid inlet 14 above the liquid outlet 16, and the outer diameter of the baffle 18 is greater than the outer diameter of the funnel 312. When the extrusion cover 31 rises to the annular end face 311 and contacts the baffle 18, the extrusion cover 31 rises to the limit position. At this time, the liquid outlet 16 is located in the funnel 312, and the annular end face 311 is located above the feed port 15. Ginkgo leaves are added to the feed port 15, and the ginkgo leaves are located below the annular end face 311, which is convenient for the extrusion cover 31 to descend and squeeze the filter residue after extraction. After extraction, the linear actuator 32 pushes the extrusion cover 31 downward, and the extracted mixed liquid is filtered by the funnel 312 and then discharged from the discharge port 24 through the discharge pipe 313 .

[0052] like Figure 3 and Figure 5 As shown, the stirring mechanism 4 includes a first stirring frame 41 , a second stirring frame 42 , a driver 43 and a gear transmission assembly 44 .

[0053] like Figure 3 and Figure 5 As shown, the first stirring frame 41 and the second stirring frame 42 are both provided in plurality, and two are both provided in the present embodiment. The first stirring frame 41 and the second stirring frame 42 both include a stirring shaft 411 and a first stirring blade 412 or a second stirring blade 421. The stirring shaft 411 is rotatably connected to the bottom cover 13, and the first stirring blade 412 or the second stirring blade 421 is fixedly mounted on both sides of the stirring shaft 411. During extraction, the ginkgo leaves and the extraction solvent can be stirred; after the filter residue is squeezed after extraction, the filter residue can be turned over. The blade surface of the first stirring blade 412 is a right-angled trapezoid, and the right-angled side of the right-angled trapezoid is fixedly mounted on the stirring shaft 411, and the hypotenuse is inclined downward from top to bottom. The inclination angle of the inclination surface is consistent with the inclination angle of the filter screen, and a scraper 413 is installed on the hypotenuse, and the scraper 413 can clean the filter screen. The blade surface of the second stirring blade 421 is rectangular, one side of the rectangle is fixedly mounted on the stirring shaft 411, and a second scraper 422 is fixedly mounted on the upper end surface, and the second scraper 422 can clean the lower end surface of the annular end surface 311. When discharging slag, the first stirring frame 41 and the second stirring frame 42 rotate, the first scraper 413 can clean the filter screen, and the second scraper 422 can clean the lower end surface of the annular end surface 311.

[0054] like Figure 3 and Figure 5As shown, a groove is provided at the upper end of the stirring shaft 411, and a steel ball 423 capable of contacting the extrusion cover 31 is rotatably installed in the groove. The upper end surface of the steel ball 423 is higher than the upper end surface of the stirring shaft 411. When the extrusion cover 31 descends, it contacts the steel ball 423, avoiding the annular end surface 311 from directly contacting the stirring shaft 411, so that the friction between the extrusion cover 31 and the stirring shaft 411 is rolling friction, which is beneficial to reduce the friction between the extrusion cover 31 and the stirring shaft 411.

[0055] like Figure 5 and Figure 6 As shown, the driver 43 is a first driving motor, which drives the stirring shaft 411 to rotate through the gear transmission assembly 44, and then drives the first stirring blade 412 and the second stirring blade 421 to rotate.

[0056] like Figure 6 As shown, the gear transmission assembly 44 includes an end gear 441 , a ring gear 442 , a first gear 443 and a second gear 444 .

[0057] like Figure 2 and Figure 6 As shown, the face gear 441 and the ring gear 442 are both fixedly mounted below the bottom cover 13, the ring gear 442 is located at the lower edge of the bottom cover 13, and the face gear 441 is located in the middle of the bottom cover 13. The inner diameter of the face gear 441 is larger than the outer diameter of the drain pipe 313, so that the drain pipe 313 can pass through the face gear 441. The axis of the face gear 441 extends in the up-down direction, and the gear faces downward. The first gear 443 is fixedly mounted on the driving shaft of the driver 43, and the first gear 443 is vertically meshed with the face gear 441. The driver 43 drives the first gear 443 to rotate, the first gear 443 drives the face gear 441 to rotate, and the face gear 441 drives the bottom cover 13 to rotate. When discharging slag, the gap between the bottom cover 13 and the cylinder wall 12 increases. As the bottom cover 13 rotates, the filter residue on the bottom cover 13 is thrown into the shell 2 from the gap.

[0058] like Figure 5 and Figure 6As shown, the second gear 444 is fixedly mounted on the lower end of the stirring shaft 411, and the second gear 444 is meshed with the ring gear 442. When the bottom cover 13 rotates, the ring gear 442 is driven to rotate, and the ring gear 442 drives the second gear 444 to rotate, and the second gear 444 follows the bottom cover 13 to revolve, so that the stirring shaft 411 drives the first stirring blade 412 and the second stirring blade 421 to rotate and revolve. The second gear 444 that drives the first stirring blade 412 and the second stirring blade 421 to rotate is different in size, so that the rotation speeds of the two stirring shafts 411 are different, which is conducive to the first stirring rack 41 and the second stirring rack 42 to stir and mix the raw materials and the extraction solution more evenly. During extraction, the first stirring rack 41 and the second stirring rack 42 stir and mix the raw materials and the extraction solution, which is conducive to the extraction of ginkgo leaves; after the extraction is completed, the first stirring rack 41 and the second stirring rack 42 flip the filter residue to facilitate the extrusion of the extraction mixture.

[0059] like Figure 3 As shown, the locking mechanism 5 includes a connecting frame 51 , a pull rod 52 , a locking ring 53 and a driving member 54 .

[0060] like Figure 3 and Figure 4 As shown, the connecting frame 51 is installed in the extraction cylinder 1 below the bottom cover 13 to support the bottom cover 13. The connecting frame 51 includes a connecting ring 511, a supporting plate 512, an annular baffle 513 and an unlocking member 514.

[0061] like Figure 3 and Figure 5 As shown, an annular baffle 513 with an L-shaped cross section is provided in the connecting ring 511, and the lower end of the bottom cover 13 is designed to be a corresponding lower step shape, so that the bottom cover 13 can be stuck on the annular baffle 513, and the connecting ring 511 can support the bottom cover 13 and can also release the support. The support plate 512 is fixedly installed below the connecting ring 511 and is used to install the driver 43. The middle part of the support plate 512 is provided with a through hole for the drain pipe 313 to pass through.

[0062] like Figure 1 and Figure 4 As shown, the pull rod 52 is fixedly mounted on the connecting ring 511 of the connecting frame 51. In this embodiment, four pull rods 52 are provided, and more pull rods 52 may be provided. The axis of the pull rod 52 extends in the up-down direction. The upper end of the pull rod 52 passes through the housing 2, and an elastic member 521 is connected to the housing 2. The elastic member 521 in this embodiment is a spring.

[0063] like Figure 2 and Figure 4As shown, the locking ring 53 is rotatably connected to the inner wall of the shell 2, and the locking ring 53 rotates around the axial direction of the shell 2. The unlocking groove 531 is opened on the inner side of the locking ring 53, and the unlocking groove 531 is open in the up and down directions. The unlocking member 514 is fixedly mounted on the connecting ring 511 of the connecting frame 51 and protrudes along the diameter direction of the connecting ring 511, and can be inserted into the unlocking groove 531. This embodiment is designed with four unlocking grooves 531 and four unlocking members 514, and can also be designed with other numbers. The unlocking member 514 is an unlocking column. The unlocking member 514 is inserted into the unlocking groove 531, and there is no support between the connecting frame 51 and the locking ring 53. The connecting frame 51 is unlocked, and the connecting frame 51 releases its support for the bottom cover 13. The extrusion cover 31 can push the bottom cover 13 and the connecting frame 51 to drop. Figure 4 The unlocking member 514 is disengaged from the unlocking slot 531, locking the connecting frame 51, and the connecting frame 51 supports the bottom cover 13, as shown in FIG. Figure 3 shown.

[0064] like Figure 3 and Figure 4 As shown, the driving member 54 includes a gear ring 541 fixedly mounted on the locking ring 53, a second driving motor 542, and a third gear 543, and the third gear 543 is meshed with the outside of the gear ring 541. A mounting cavity 25 for mounting the third gear 543 is provided on one side of the housing 2, and the mounting cavity 25 is communicated with the housing 2 so that the third gear 543 can mesh with the gear ring 541. The second driving motor 542 is mounted above the mounting cavity 25, and the driving shaft of the second driving motor 542 passes through the mounting cavity 25 and is fixedly connected to the third gear 543. The second driving motor 542 drives the third gear 543 to rotate, and the third gear 543 drives the gear ring 541 to rotate, thereby realizing the rotation of the locking ring 53.

[0065] The extraction device for producing natto ginkgo leaf extract capsules of the present invention is used as follows: Figure 1 and Figure 3 As shown, before extraction, there is no material in the extraction cylinder 1, and the elastic member 521 drives the pull rod 52 and the connecting frame 51 to reset, so that the edge of the connecting frame 51 is located on the locking ring 53, and the driving member 54 drives the locking ring 53 to rotate, so that the locking ring 53 rotates until the unlocking member 514 is disengaged from the unlocking groove 531. Since the locking ring 53 cannot be raised or lowered, the connecting frame 51 cannot be lowered, and the bottom cover 13 supported by the connecting frame 51 cannot be lowered. The bottom cover 13 seals the bottom of the extraction cylinder 1.

[0066] like Figure 2As shown, the linear drive 32 drives the extrusion cover 31 to rise, so that the liquid outlet 16 is located in the funnel 312, and the annular end surface 311 is located above the feed port 15. Ginkgo leaves are added to the feed port 15, and the ginkgo leaves enter the extraction cylinder 1. The extraction solvent is transported to the liquid inlet 14, and the extraction solvent reaches the extraction cylinder 1 through the filter screen of the funnel 312, and the filter screen is flushed to reduce the blockage of the filter screen.

[0067] like Figure 6 As shown, the driver 43 is started, the driver 43 drives the first gear 443 to rotate, the first gear 443 drives the end gear 441 to rotate, the end gear 441 drives the bottom cover 13 to rotate, the bottom cover 13 drives the ring gear 442 to rotate, the ring gear 442 drives the second gear 444 to rotate, and the second gear 444 revolves with the bottom cover 13, as shown in FIG. Figure 3 and Figure 5 As shown, the stirring shaft 411 drives the first stirring blade 412 and the second stirring blade 421 to rotate and revolve, so as to stir and mix the raw material and the extraction solution, which is beneficial to the extraction of the ginkgo leaves.

[0068] After the extraction is completed, Figure 2 and Figure 3 As shown, the stirring mechanism 4 stops working, the linear driver 32 pushes the extrusion cover 31 down, the edge of the annular end surface 311 cleans the inner wall of the extraction tube 1, the drain pipe 313 extends into the drain port 24, the annular end surface 311 squeezes the filter residue, and the extracted mixed liquid is filtered by the funnel 312 and discharged from the drain port 24 through the drain pipe 313; the linear driver 32 drives the extrusion cover 31 to rise, the stirring mechanism 4 works, and the first stirring blade 412 and the second stirring blade 421 flip the filter residue for a period of time, and then the stirring mechanism 4 stops working, and the linear driver 32 drives the extrusion cover 31 to descend again, and repeatedly squeezes the filter residue, which can reduce the liquid content in the filter residue and completely separate the ginkgo leaves from the extracted mixed liquid until the extracted mixed liquid is discharged.

[0069] like Figure 4 As shown, the driving member 54 drives the locking ring 53 to rotate, so that the locking ring 53 rotates until the unlocking member 514 is located in the unlocking groove 531, and there is no support between the connecting frame 51 and the locking ring 53. The connecting frame 51 is unlocked, and the connecting frame 51 loses its support for the bottom cover 13. Since the unlocking member 514 and the pull rod 52 are fixedly connected to the connecting frame 51, the upper end of the pull rod 52 is connected to the shell 2 through the elastic member 521. Under the action of the gravity of the material in the extraction cylinder 1 and the bottom cover 13, the bottom cover 13 and the cylinder wall 12 are separated. At the same time, as shown in FIG. Figure 2As shown, the linear drive 32 drives the extrusion cover 31 to descend, and the extrusion cover 31 pushes the bottom cover 13 to continue to descend, so that the gap between the bottom cover 13 and the cylinder wall 12 increases, and the drive 43 is started, the bottom cover 13 rotates, and the filter residue on the bottom cover 13 is thrown out from the gap into the shell 2 through centrifugal action and discharged through the discharge port 22. The first stirring frame 41 and the second stirring frame 42 rotate, the scraper 1 413 cleans the filter screen, and the scraper 2 422 cleans the annular end surface 311.

[0070] The present invention provides an embodiment of an extraction process for producing natto ginkgo leaf extract capsules, using the above-mentioned extraction device for producing natto ginkgo leaf extract capsules, comprising the following steps:

[0071] Step 1: The elastic member 521 drives the pull rod 52 and the connecting frame 51 to reset, so that the edge of the connecting frame 51 is located on the locking ring 53, and the driving member 54 drives the locking ring 53 to rotate, so that the locking ring 53 rotates until the unlocking member 514 is disengaged from the unlocking groove 531, the locking ring 53 locks the connecting frame 51, and the bottom cover 13 seals the bottom of the extraction cylinder 1;

[0072] Step 2: The linear driver 32 drives the extrusion cover 31 to rise, so that the liquid outlet 16 is located in the funnel 312, and the annular end surface 311 is located above the feed port 15, and ginkgo leaves are added to the feed port 15, and the extraction solvent is transported to the liquid inlet 14, and the extraction solvent reaches the extraction cylinder 1 through the filter screen of the funnel 312, and the driver 43 is started, and the driver 43 drives the first gear 443 to rotate, and the first gear 443 drives the end gear 441 to rotate, and the end gear 441 drives the bottom cover 13 to rotate, and the bottom cover 13 drives the ring gear 442 to rotate, and the ring gear 442 drives the second gear 444 to rotate, and the second gear 444 revolves with the bottom cover 13, so that the stirring shaft 411 drives the first stirring blade 412 and the second stirring blade 421 to rotate and revolve, so as to stir and mix the raw material and the extraction solution;

[0073] Step 3: After the extraction is completed, the stirring mechanism 4 stops working, the linear driver 32 pushes the extrusion cover 31 down, the edge of the annular end surface 311 cleans the inner wall of the extraction tube 1, the discharge pipe 313 extends into the discharge port 24, the annular end surface 311 squeezes the filter residue, and the extraction mixed liquid is filtered by the funnel 312 and discharged from the discharge port 24 through the discharge pipe 313; the linear driver 32 drives the extrusion cover 31 to rise, the stirring mechanism 4 works, and the first stirring blade 412 and the second stirring blade 421 turn the filter residue for a period of time, and then the stirring mechanism 4 stops working, and the linear driver 32 drives the extrusion cover 31 to descend again, and repeatedly squeezes the filter residue until the extraction mixed liquid is discharged;

[0074] Step 4: The driving member 54 drives the locking ring 53 to rotate, so that the locking ring 53 rotates until the unlocking member 514 is located in the unlocking groove 531. There is no support between the connecting frame 51 and the locking ring 53. The connecting frame 51 is unlocked, and the connecting frame 51 loses its support for the bottom cover 13. Under the action of the gravity of the material in the extraction cylinder 1 and the bottom cover 13, the bottom cover 13 and the cylinder wall 12 are separated, and the linear drive 32 drives the extrusion cover 31 to descend, and the extrusion cover 31 pushes the bottom cover 13 to continue to descend, so that the gap between the bottom cover 13 and the cylinder wall 12 increases, and the driver 43 is started. The bottom cover 13 rotates, and the filter residue on the bottom cover 13 is thrown out from the gap into the shell 2 through centrifugal action and discharged through the discharge port 22. The first stirring frame 41 and the second stirring frame 42 rotate, and the scraper 1 413 cleans the filter screen, and the scraper 2 422 cleans the annular end surface 311.

[0075] In other embodiments of the extraction device for producing natto-gingko leaf extract capsules of the present invention, the following replacement and deformation methods can be used:

[0076] 1. In other embodiments, the difference from the above embodiments is that the stirring mechanism 4 includes a stirring frame and a driver 43, the driver 43 drives the stirring frame to stir the raw materials, the scraper 1 413 and the scraper 2 422 are omitted, and the filter screen and the filter residue on the annular end surface 311 can be washed by injecting clean water or cleaning liquid into the liquid inlet 14.

[0077] 2. In other embodiments, the difference from the above embodiments is that the gear transmission assembly 44 can be a gear that is fixedly connected to the stirring shaft 411 and the driving shaft of the driver 43 and meshes in sequence. When the number of ginkgo leaves to be extracted in the extraction cylinder 1 is small, the stirring shaft 411 drives the first stirring blade 412 and the second stirring blade 421 to rotate to achieve stirring and the scraper 1 413 and the scraper 2 422 clean the filter screen and the annular end surface 311 respectively.

[0078] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0079] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An extraction device for producing natto-gingko leaf extract capsules, comprising an extraction cylinder and a stirring mechanism arranged in the extraction cylinder, characterized in that: The extraction cylinder is provided with an extrusion filtering mechanism, and when the extrusion filtering mechanism performs extrusion filtering on the extraction mixed liquid, the stirring mechanism stops working; The extrusion filtering mechanism comprises an extrusion cover abutting against the wall of the extraction cylinder, and a linear driver arranged at the upper end of the extraction cylinder and capable of driving the extrusion cover to rise and fall; the extrusion cover has an annular end surface capable of extruding the filter residue and a funnel arranged inside the annular end surface, the lower end of the funnel is fixedly connected to a drain pipe, and the funnel wall of the funnel is surrounded by a filter screen, and is used to filter the extraction mixed liquid and enable the extraction mixed liquid to be discharged through the drain pipe; The extraction cylinder is arranged in the shell, and the lower end of the cylinder wall is movably connected with the bottom cover, and a locking mechanism capable of locking the bottom cover is arranged in the shell, and the locking mechanism comprises a connecting frame abutting against and supporting the bottom cover, a pull rod fixedly connected to the connecting frame and connected to the shell through an elastic member, a locking ring rotatably connected to the inner wall of the shell, and a driving member driving the locking ring to rotate; an unlocking groove is arranged on the locking ring, and an unlocking member capable of being inserted into the unlocking groove is fixedly arranged on the connecting frame, and the unlocking member is inserted into the unlocking groove to unlock the connecting frame, and the squeezing cover can push the bottom cover and the connecting frame to descend; The unlocking piece is disengaged from the unlocking slot, locking the connecting frame; The stirring mechanism includes a first stirring frame and a second stirring frame arranged on the bottom cover, a driver and a gear transmission assembly for driving the first stirring frame and the second stirring frame to rotate synchronously; the first stirring frame and the second stirring frame both include a stirring shaft and a first stirring blade or a second stirring blade, a scraper 1 capable of cleaning the filter is fixedly arranged on the side of the first stirring blade; a scraper 2 capable of cleaning the annular end face is fixedly arranged on the upper end of the second stirring blade; the gear transmission assembly includes an end face gear fixedly installed under the bottom cover, a gear ring, a first gear fixedly installed on the driving shaft of the driver and meshing with the end face gear, and a second gear fixedly installed at the lower end of the stirring shaft and meshing with the gear ring, the end face gear drives the bottom cover to rotate, and the stirring shaft and the bottom cover are rotatably connected.

2. The extraction device for producing natto-gingko leaf extract capsules according to claim 1, characterized in that: The upper end of the cylinder wall is fixedly connected with a top cover, which is provided with a liquid inlet for conveying extraction solvent, the lower end of the liquid inlet is sealed, and the side of the liquid inlet is provided with a liquid outlet that can extend into the funnel, and the extraction cylinder is provided with a feed port for adding raw materials.

3. The extraction device for producing natto-gingko leaf extract capsules according to claim 1, characterized in that: The upper end of the stirring shaft is rotatably connected with a steel ball that can contact the extrusion cover to reduce friction between the stirring shaft and the extrusion cover.

4. The extraction device for producing natto-gingko leaf extract capsules according to claim 1, characterized in that: The shell is provided with a liquid discharge port and a material discharge port, a bearing is installed in the middle part of the bottom cover, and a liquid discharge pipe can penetrate the bearing and the connecting frame and extend into the liquid discharge port.

5. An extraction process for producing natto-gingko leaf extract capsules, using the extraction device for producing natto-gingko leaf extract capsules according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step 1: The elastic member drives the pull rod and the connecting frame to reset, the driving member drives the locking ring to rotate until the unlocking member is disengaged from the unlocking groove, the locking ring locks the connecting frame, and the bottom cover seals the cylinder wall; Step 2: Put the ginkgo leaves and the extraction solvent into the extraction cylinder, and start the stirring mechanism to extract the ginkgo leaves; Step 3: After extraction, the stirring mechanism stops working, the linear drive pushes the extrusion cover down, the extraction mixture is filtered through the funnel and discharged through the discharge pipe, the annular end face squeezes the filter residue, and the linear drive drives the extrusion cover to move up, the stirring mechanism stops working after working for a period of time, the linear drive pushes the extrusion cover down, and the filter residue is repeatedly squeezed until the extraction mixture is discharged; Step 4: The driving member drives the locking ring to rotate until the unlocking member is located in the unlocking groove, unlocks the connecting frame, and the bottom cover and the cylinder wall are separated. The linear drive drives the extrusion cover to descend, and the extrusion cover pushes the bottom cover to descend, so that the slag in the extraction cylinder is discharged.

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