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CN114159825B - Extraction equipment and process for efficiently extracting asiaticoside from centella asiatica - Google Patents

Extraction equipment and process for efficiently extracting asiaticoside from centella asiatica Download PDF

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Publication number
CN114159825B
CN114159825B CN202111301796.0A CN202111301796A CN114159825B CN 114159825 B CN114159825 B CN 114159825B CN 202111301796 A CN202111301796 A CN 202111301796A CN 114159825 B CN114159825 B CN 114159825B
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Prior art keywords
leaching
extrusion
barrel
adjusting
centella
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CN114159825A (en
Inventor
周迪平
唐克军
周泽阳
秦福连
李荣明
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Guangxi Aglycone Plant Products Co ltd
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Guangxi Aglycone Plant Products Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D11/00—Solvent extraction
    • B01D11/02—Solvent extraction of solids
    • B01D11/0288—Applications, solvents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K36/00—Medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicines
    • A61K36/18—Magnoliophyta (angiosperms)
    • A61K36/185—Magnoliopsida (dicotyledons)
    • A61K36/23—Apiaceae or Umbelliferae (Carrot family), e.g. dill, chervil, coriander or cumin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D11/00—Solvent extraction
    • B01D11/02—Solvent extraction of solids
    • B01D11/0215—Solid material in other stationary receptacles
    • B01D11/0253—Fluidised bed of solid materials
    • B01D11/0257—Fluidised bed of solid materials using mixing mechanisms, e.g. stirrers, jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/16—Cleaning-out devices, e.g. for removing the cake from the filter casing or for evacuating the last remnants of liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D36/00—Filter circuits or combinations of filters with other separating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/087—Cleaning containers, e.g. tanks by methods involving the use of tools, e.g. brushes, scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/04—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using press rams
    • B30B9/06—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using press rams co-operating with permeable casings or strainers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2236/00—Isolation or extraction methods of medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicine
    • A61K2236/10—Preparation or pretreatment of starting material
    • A61K2236/13—Preparation or pretreatment of starting material involving cleaning, e.g. washing or peeling
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2236/00—Isolation or extraction methods of medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicine
    • A61K2236/10—Preparation or pretreatment of starting material
    • A61K2236/15—Preparation or pretreatment of starting material involving mechanical treatment, e.g. chopping up, cutting or grinding
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2236/00—Isolation or extraction methods of medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicine
    • A61K2236/30—Extraction of the material
    • A61K2236/33—Extraction of the material involving extraction with hydrophilic solvents, e.g. lower alcohols, esters or ketones
    • A61K2236/331—Extraction of the material involving extraction with hydrophilic solvents, e.g. lower alcohols, esters or ketones using water, e.g. cold water, infusion, tea, steam distillation or decoction
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2236/00—Isolation or extraction methods of medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicine
    • A61K2236/30—Extraction of the material
    • A61K2236/39—Complex extraction schemes, e.g. fractionation or repeated extraction steps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2236/00—Isolation or extraction methods of medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicine
    • A61K2236/50—Methods involving additional extraction steps
    • A61K2236/53—Liquid-solid separation, e.g. centrifugation, sedimentation or crystallization

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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Natural Medicines & Medicinal Plants (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Epidemiology (AREA)
  • Medical Informatics (AREA)
  • Biotechnology (AREA)
  • Microbiology (AREA)
  • Mycology (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Botany (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Alternative & Traditional Medicine (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
  • Extraction Or Liquid Replacement (AREA)

Abstract

The invention discloses an extraction device and an extraction process for efficiently extracting asiaticoside from centella, which relate to the technical field of asiaticoside extraction and comprise the following steps: the bracket is preset on the ground; the smashing equipment is arranged on one side of the upper end face of the bracket and is used for smashing the centella asiatica; the shell is fixed on one side of the crushing equipment; the leaching component is arranged in the shell, and one side of the leaching component is provided with a rotating motor for providing power for the leaching component; and the centrifugal filtering equipment is arranged in the bracket and positioned below the leaching assembly and used for filtering residues of the output filtrate. The invention can extrude the centella through the leaching component, thereby increasing the extraction efficiency of the total glycosides of the centella.

Description

Extraction equipment and process for efficiently extracting asiaticoside from centella asiatica
Technical Field
The invention relates to the technical field of asiaticoside extraction, in particular to extraction equipment and a process for efficiently extracting asiaticoside from centella.
Background
The asiaticoside is extracted from herba Centellae by water extraction, centrifugal filtration, ceramic membrane filtration, resin column chromatography, concentration, and making into paste.
The existing asiaticoside extraction equipment needs to consume a large amount of time during water extraction, the extraction efficiency is too low, and the crushed asiaticoside is passively permeated out by soaking the crushed asiatic centella in water during the water extraction, so that the extraction efficiency is greatly influenced.
Aiming at the problems, the invention provides extraction equipment and a process for efficiently extracting asiaticoside from centella so as to solve the problems.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: extraction equipment for efficiently extracting asiaticoside from centella asiatica comprises:
the bracket is preset on the ground;
the smashing equipment is arranged on one side of the upper end face of the bracket and is used for smashing the centella;
a housing fixed to one side of the crushing apparatus;
the leaching assembly is arranged in the shell, and one side of the leaching assembly is provided with a rotating motor for providing power for the leaching assembly; and
the centrifugal filter equipment is installed in the support, and the centrifugal filter equipment is located the below of leaching subassembly for carry out the residue to output straining clear liquid and filter.
Further, preferably, the leaching assembly comprises:
the two end covers are fixed on two sides in the shell;
the leaching barrel is arranged between the two end covers; and
the extrusion subassembly rotates to be set up inside the leaching bucket for extrude the extraction to the snow grass.
Further, preferably, a liquid inlet is formed in one side of the top of the leaching barrel and used for liquid to enter, a raw material inlet is formed in one side of the leaching barrel, which is close to the crushing device, and the raw material inlet corresponds to an outlet of the crushing device;
and a clear filtrate outlet is formed in the middle of the bottom of the leaching barrel and used for discharging liquid in the leaching barrel.
Further, preferably, the leaching barrel is oval, so that raw materials can be gathered towards the middle position of the leaching barrel after entering the leaching barrel;
and a filter screen is arranged between the raw material inlet and the outlet of the crushing equipment and is used for enabling centella asiatica of 10-20 mm to pass through.
Preferably, a soft brush is fixed on one side inside the leaching barrel, and the liquid inside the leaching barrel needs to completely cover the soft brush and is used for removing the snowfall grass adhered to the squeezing component.
Further, preferably, the pressing assembly includes:
the adjusting shaft is rotatably arranged between the two end covers;
the extrusion barrel is coaxially and rotatably arranged on the adjusting shaft; and
the extrusion plates are at least four groups and are circumferentially arranged in the extrusion barrel.
Further, preferably, a plurality of sliding columns are fixed on one side of the extrusion plate close to the extrusion barrel, the plurality of sliding columns are slidably arranged in the extrusion barrel, and one ends of the plurality of sliding columns close to the extrusion plate are sleeved with return springs;
one side, far away from the extrusion plate, of each sliding column is connected with one end of an extrusion spring, the other end of each extrusion spring is connected with an adjusting head, and the adjusting heads can slide in the extrusion barrel through adjusting shafts;
and the acting force of the return spring is smaller than that of the extrusion spring.
Further, preferably, a plurality of pawls are rotatably arranged on both sides of the extrusion barrel, and torsion springs are arranged in the plurality of pawls;
ratchet wheels are fixed at the positions of the adjusting shaft corresponding to the plurality of pawls and used for controlling the extrusion barrel to rotate in one direction;
and the adjusting shaft and the adjusting head are fixed with adjusting rings at corresponding positions for adjusting the extrusion force of the extrusion plate.
Further, it is preferred, the adjusting ring is plum blossom shape, the regulating spindle can make adjusting ring plum blossom shape protruding position and regulation head carry out progressively being close to through rotating alone, is convenient for to the extrusion pressure degree of adjusting the stripper plate.
Further, preferably, the extraction process for efficiently extracting the asiaticoside from the centella asiatica comprises the following steps:
s1, putting cleaned centella into crushing equipment for crushing, and when the crushed centella is 10-20 mm, allowing the crushed centella to enter a leaching assembly through a raw material inlet;
s2, injecting liquid with the feed amount being eight times of that of the leaching component through a liquid inlet, starting a rotating motor to enable an extrusion component to slowly move clockwise to extrude the raw materials, discharging the liquid from a filtrate outlet after the raw materials are continuously extruded for 1 hour, and enabling the liquid to enter centrifugal filtration equipment;
s3, enabling the pawl to be clamped with the next opening of the ratchet wheel through the anticlockwise rotation of the rotating motor, and enabling the adjusting ring to eject out the adjusting head;
s4, repeating the steps S2 and S3 twice, wherein the injection amount of liquid in the two times is seven times and six times of the feeding amount, and the duration time is 1 hour and 0.5 hour respectively;
s5, carrying out centrifugal filter residue through centrifugal filter equipment to finish primary extraction of the asiaticoside.
Compared with the prior art, the invention provides the extraction equipment and the process for efficiently extracting the asiaticoside from the centella asiatica, and the extraction equipment and the process have the following beneficial effects:
in the invention, the squeezing assembly is arranged in the leaching assembly and can squeeze the centella, so that the permeation efficiency of the total glycosides of the centella is accelerated, the squeezing plate can be gradually ejected out through the adjusting ring in the squeezing assembly, so that the squeezing strength is gradually increased, the time of three times of water leaching is greatly shortened, the centella can be always positioned in the liquid through the flexible hairbrush in the leaching barrel, and the leaching efficiency is further improved.
Drawings
FIG. 1 is a schematic overall view of an extraction apparatus for efficiently extracting total asiaticoside from centella asiatica;
FIG. 2 is a schematic view of the leaching assembly of an extraction plant for the efficient extraction of total asiaticosides from centella asiatica;
FIG. 3 is a schematic side view of an extraction tank of an extraction apparatus for efficiently extracting asiaticoside from centella asiatica;
FIG. 4 is a schematic view of the squeezing assembly of the extraction device for extracting the total glycosides of centella asiatica efficiently from centella asiatica;
FIG. 5 is a schematic view of the adjustment axis of an extraction apparatus for efficiently extracting asiaticoside from centella asiatica;
in the figure: 1. a support; 2. a crushing device; 3. a housing; 4. a rotating electric machine; 5. a leaching assembly; 6. a centrifugal filtration device; 51. leaching the barrel; 52. an extrusion assembly; 511. a liquid inlet; 512. a raw material inlet; 513. a filtered liquid outlet; 514. a flexible brush; 521. extruding the barrel; 522. a pressing plate; 523. a return spring; 524. extruding the spring; 525. an adjustment head; 526. a pawl; 527. an adjustment shaft; 528. an adjusting ring; 529. and (4) ratchet wheel.
Detailed Description
Referring to fig. 1, the present invention provides a technical solution: extraction equipment for efficiently extracting asiaticoside from centella asiatica comprises:
the support 1 is preset on the ground;
the smashing equipment 2 is arranged on one side of the upper end face of the support 1 and used for smashing the centella asiatica;
a housing 3 fixed to one side of the crushing apparatus 2;
the leaching component 5 is arranged in the shell 3, and one side of the leaching component 5 is provided with a rotating motor 4 for providing power for the leaching component 5; and
and the centrifugal filtering equipment 6 is arranged inside the bracket 1, and the centrifugal filtering equipment 6 is positioned below the leaching component 5 and used for filtering residues of the produced filtrate.
It should be explained that the leaching component 5 needs to leach the crushed centella asiatica three times, the input amount of liquid in the three times of leaching is eight times, seven times and six times of the input amount, and the leaching time is 1h, 1h and 0.5h, so that the time is shortened by 50% compared with the prior art, and the leaching efficiency is improved.
Referring to fig. 2 to 3, in the present embodiment, the leaching assembly 5 includes:
two end covers are fixed on two sides inside the shell 3;
an extraction vessel 51 mounted between the two end caps; and
and the squeezing assembly 52 is rotatably arranged inside the leaching barrel 51 and is used for squeezing and extracting the centella.
As a preferred embodiment, a liquid inlet 511 is formed at one side of the top of the leaching barrel 51 for the liquid to enter, a raw material inlet 512 is formed at one side of the leaching barrel 51 close to the crushing device 2, and the raw material inlet 512 corresponds to the outlet of the crushing device 2;
the middle position of the bottom of the leaching barrel 51 is provided with a filtrate outlet 513 for discharging the liquid in the leaching barrel 51, and the liquid in the leaching barrel 51 needs to be discharged after each leaching.
In a preferred embodiment, the leaching tank 51 is oval, so that the raw material can be gathered to the middle position of the leaching tank 51 after entering the leaching tank, that is, the raw material is stacked at the middle position so that the squeezing assembly 52 can squeeze the raw material, and the extraction efficiency is improved;
a filter screen is arranged between the raw material inlet 512 and the outlet of the crushing device 2 and is used for enabling centella asiatica with the thickness of 10-20 mm to pass through.
In a preferred embodiment, the soft brush 514 is fixed on one side inside the leaching barrel 51, and the liquid inside the leaching barrel 51 needs to completely cover the soft brush 514 for removing the accumulated snow on the squeezing assembly 52, that is, the accumulated snow can be always located in the liquid through the soft brush 514, thereby improving the yield of leaching.
Referring to fig. 4-5, as a preferred embodiment, the pressing assembly 52 includes:
an adjusting shaft 527 rotatably arranged between the two end covers;
a squeezing barrel 521 coaxially and rotatably provided on the adjusting shaft 527; and
the extrusion plates 522 are arranged in at least four groups and are circumferentially arranged in the extrusion barrel 521.
As a preferred embodiment, a plurality of sliding columns are fixed on one side of the squeeze plate 522 close to the squeeze barrel 521, the plurality of sliding columns are slidably disposed in the squeeze barrel 521, and a return spring 523 is sleeved on one end of the plurality of sliding columns close to the squeeze plate 522;
one side of the sliding columns, which is far away from the extrusion plate 522, is connected with one end of an extrusion spring 524, the other end of the extrusion spring 524 is connected with an adjusting head 525, and the adjusting head 525 can slide in the extrusion barrel 521 through an adjusting shaft 527;
and, the acting force of the return spring 523 is smaller than that of the pressing spring 524.
In a preferred embodiment, a plurality of pawls 526 are rotatably disposed on both sides of the squeezing barrel 521, and a torsion spring is disposed in each of the pawls 526;
a ratchet wheel 529 is fixed on the adjusting shaft 527 at a position corresponding to the plurality of pawls 526 and is used for controlling the extrusion barrel 521 to rotate in one direction;
and, the adjusting shaft 527 and the adjusting head 525 are fixed with an adjusting ring 528 at the corresponding position for adjusting the extrusion force of the extrusion plate 522.
In a preferred embodiment, the adjusting ring 528 has a quincunx shape, and the adjusting shaft 527 can rotate to gradually bring the quincunx protruding position of the adjusting ring 528 and the adjusting head 525 closer together, so as to adjust the degree of compression of the compression plate 522.
It should be explained that when the ratchet wheel 529 rotates once, the adjusting head 525 is just at the middle position between the lowest point and the highest point of the adjusting ring 528, and when the ratchet wheel 529 rotates again, the adjusting head 525 is located at the highest point of the adjusting ring 528, so that the squeezing plate 522 can generate three different squeezing force degrees to squeeze the centella to different degrees, and the leaching effect is improved.
In this embodiment, the process for extracting asiaticoside from centella asiatica efficiently comprises the following steps:
s1, putting cleaned centella into a crushing device 2 for crushing, and when the crushed centella is 10-20 mm, feeding the cleaned centella into a leaching component 5 through a raw material inlet 512;
s2, injecting liquid with the feed amount being eight times of that of the leaching component 5 through a liquid inlet 511, starting a rotating motor 4 to enable an extrusion component 52 to slowly move clockwise to extrude the raw materials, discharging the liquid from a filtrate outlet 513 after 1 hour, and enabling the liquid to enter a centrifugal filtering device 6;
s3, the rotating motor 4 rotates anticlockwise, so that the pawl 526 is clamped with the next opening of the ratchet wheel 529, and the adjusting ring 528 ejects the adjusting head 525 out;
s4, repeating the steps S2 and S3 twice, wherein the injection amount of liquid in the two times is seven times and six times of the feeding amount, and the duration time is 1 hour and 0.5 hour respectively;
s5, carrying out centrifugal filter residue through a centrifugal filter device 6 to finish the primary extraction of the asiaticoside.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.

Claims (5)

1. Extraction equipment for efficiently extracting asiaticoside from centella asiatica is characterized in that: the method comprises the following steps:
the support (1) is preset on the ground;
the smashing equipment (2) is arranged on one side of the upper end face of the bracket (1) and is used for smashing the centella;
a housing (3) fixed to one side of the crushing apparatus (2);
the leaching assembly (5) is arranged inside the shell (3), and one side of the leaching assembly (5) is provided with a rotating motor (4) for providing power for the leaching assembly; and
the centrifugal filtering device (6) is arranged inside the bracket (1), and the centrifugal filtering device (6) is positioned below the leaching assembly (5) and is used for filtering residues of produced filtrate;
the leaching assembly (5) comprises:
the two end covers are fixed on two sides inside the shell (3);
an extraction vessel (51) mounted between the two end caps; and
the squeezing assembly (52) is rotatably arranged inside the leaching barrel (51) and is used for squeezing and extracting the centella;
the compression assembly (52) includes:
the adjusting shaft (527) is rotatably arranged between the two end covers;
a squeezing barrel (521) coaxially and rotatably arranged on the adjusting shaft (527); and
the extrusion plates (522) are at least four groups and are circumferentially distributed in the extrusion barrel (521);
a plurality of sliding columns are fixed on one side, close to the extrusion barrel (521), of the extrusion plate (522), the sliding columns are slidably arranged in the extrusion barrel (521), and one ends, close to the extrusion plate (522), of the sliding columns are sleeved with return springs (523);
one side, far away from the extrusion plate (522), of each sliding column is connected with one end of an extrusion spring (524), the other end of the extrusion spring (524) is connected with an adjusting head (525), and the adjusting heads (525) can slide in the extrusion barrel (521) through adjusting shafts (527);
the acting force of the return spring (523) is smaller than that of the extrusion spring (524);
a plurality of pawls (526) are rotatably arranged on both sides of the extrusion barrel (521), and torsion springs are arranged in the pawls (526);
a ratchet wheel (529) is fixed on the adjusting shaft (527) at a position corresponding to the pawls (526) and is used for controlling the extrusion barrel (521) to rotate in one direction;
adjusting rings (528) are fixed at positions of the adjusting shafts (527) corresponding to the adjusting heads (525) and used for adjusting the extrusion force of the extrusion plates (522);
adjusting ring (528) are the plum blossom form, regulation axle (527) can make adjusting ring (528) plum blossom form protruding position and regulation head (525) carry out progressively being close to through rotating alone, are convenient for to the extrusion dynamics of adjusting stripper plate (522).
2. The extraction apparatus for efficiently extracting asiaticoside from centella asiatica according to claim 1, wherein: a liquid inlet (511) is formed in one side of the top of the leaching barrel (51) and used for liquid to enter, a raw material inlet (512) is formed in one side, close to the crushing equipment (2), of the leaching barrel (51), and the raw material inlet (512) corresponds to an outlet of the crushing equipment (2);
a clear liquid filtering outlet (513) is formed in the middle of the bottom of the leaching barrel (51) and used for discharging liquid in the leaching barrel (51).
3. The extraction apparatus for efficiently extracting asiaticoside from centella asiatica according to claim 2, wherein: the leaching barrel (51) is oval, so that raw materials can be gathered to the middle position of the leaching barrel (51) conveniently after entering;
a filter screen is arranged between the raw material inlet (512) and the outlet of the crushing equipment (2) and is used for enabling centella asiatica of 10-20mm to pass through.
4. The extraction apparatus for efficiently extracting asiaticoside from centella asiatica according to claim 1, wherein: a soft brush (514) is fixed on one side inside the leaching barrel (51), and liquid inside the leaching barrel (51) needs to completely cover the soft brush (514) and is used for removing the accumulated snow adhered to the squeezing assembly (52).
5. Extraction process for the efficient extraction of total asiaticosides from centella asiatica, using the extraction device for the efficient extraction of total asiaticosides from centella asiatica according to any of claims 1 to 4, characterized in that: the method comprises the following steps:
s1, putting cleaned centella into crushing equipment (2) for crushing, and when the crushed centella is 10-20mm, feeding the crushed centella into a leaching assembly (5) through a raw material inlet (512);
s2, injecting liquid with the material feeding amount being eight times of that of the leaching component (5) through a liquid inlet (511), starting a rotating motor (4) to enable an extrusion component (52) to slowly move clockwise to extrude the raw materials, discharging the liquid from a filtrate outlet (513) after the raw materials are continuously extruded for 1 hour, and enabling the liquid to enter centrifugal filtering equipment (6);
s3, the rotating motor (4) rotates anticlockwise, so that the pawl (526) is clamped with the next opening of the ratchet wheel (529), and the adjusting ring (528) ejects the adjusting head (525);
s4, repeating the steps S2 and S3 twice, wherein the injection amount of liquid in the two times is seven times and six times of the feeding amount respectively, and the duration time is 1 hour and 0.5 hour respectively;
s5, carrying out centrifugal filter residue through a centrifugal filter device (6) to finish the primary extraction of the asiaticoside.
CN202111301796.0A 2021-11-04 2021-11-04 Extraction equipment and process for efficiently extracting asiaticoside from centella asiatica Active CN114159825B (en)

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US3523799A (en) * 1966-11-25 1970-08-11 Haas Inc John I Process and apparatus for extraction of hops with a solvent
CN209456358U (en) * 2018-12-29 2019-10-01 中国农业科学院饲料研究所 A device for extracting protein from mulberry leaves
CN211863925U (en) * 2019-12-11 2020-11-06 福州东星生物技术有限公司 A device for glossy ganoderma active ingredient draws

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