CN114699798A - Device and method for extracting volatile oil of radix angelicae and angelica sinensis - Google Patents
Device and method for extracting volatile oil of radix angelicae and angelica sinensis Download PDFInfo
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- CN114699798A CN114699798A CN202210631936.9A CN202210631936A CN114699798A CN 114699798 A CN114699798 A CN 114699798A CN 202210631936 A CN202210631936 A CN 202210631936A CN 114699798 A CN114699798 A CN 114699798A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D11/00—Solvent extraction
- B01D11/02—Solvent extraction of solids
- B01D11/0288—Applications, solvents
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- 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
- A61K36/232—Angelica
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B1/00—Production of fats or fatty oils from raw materials
- C11B1/02—Pretreatment
- C11B1/04—Pretreatment of vegetable raw material
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B1/00—Production of fats or fatty oils from raw materials
- C11B1/10—Production of fats or fatty oils from raw materials by extracting
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- 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
- A61K2236/333—Extraction of the material involving extraction with hydrophilic solvents, e.g. lower alcohols, esters or ketones using mixed solvents, e.g. 70% EtOH
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Abstract
The invention provides an extraction device and an extraction method for volatile oil of radix angelicae and angelica sinensis, and relates to the field of traditional Chinese medicine extraction. Including smashing bucket, agitator, the upper end of smashing the bucket is provided with the top cap, the up end center department of top cap is provided with switch valve, the lower terminal surface center department of top cap is provided with fixed frame, the upper end fixed connection of fixed frame is on the lower terminal surface of top cap, the inside of fixed frame is provided with the second motor, the output of second motor runs through the lower inner wall of fixed frame, and tip fixedly connected with spinning blade, the lower extreme of spinning blade is provided with the filter, the lateral wall fixed connection of filter is on the inside wall of smashing the bucket. Through being provided with heating device on the inside wall at the agitator, utilize heating device to heat and keep warm the processing to the mixed solution of inside for inside efficiency of volatilizing is convenient for better to being drawed angelica dahurica and angelica.
Description
Technical Field
The invention relates to the technical field of traditional Chinese medicine extraction, in particular to a device and a method for extracting volatile oil of radix angelicae and angelica sinensis.
Background
Radix Angelicae Dahuricae is a perennial big herb with a height of 1-2.5 m, cylindrical root, a diameter of 2-5 cm at stem base, a pinnate division of basal leaves, a terminal growth or lateral growth of a multiple umbrella-shaped inflorescence, and a long round to oval fruit; angelica sinensis, a name of traditional Chinese medicine, is the dried root of Angelica sinensis (oliv.) Diels of Umbelliferae. The south-east China of Gansu province mainly produces, has the effects of enriching and activating blood, regulating menstruation and relieving pain, and loosening the bowel to relieve constipation, and the nutritive value of angelica and radix angelicae dahuricae is very high, can help us to manage some diseases of the body, and angelica more helps women to enrich blood and tonify qi, simultaneously, to some anemia patients, also can be fine carry out the improvement effect of the body, and radix angelicae is more used for some conditions of dispelling wind and relieving pain, can be fine help to treat the diseases of the body.
However, the conventional volatile oil extraction device can only be used for single traditional Chinese medicinal materials with relatively clear volatile oil properties, and is relatively narrow in application range, and meanwhile, the traditional Chinese medicinal materials are often required to be cut or crushed into coarse grains or medium grains in advance in the use process of the conventional volatile oil extraction device to be extracted and processed, and the processing and extraction process is relatively complex, so that the device and the method for extracting the volatile oil from angelica dahurica and angelica sinensis are provided.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the device and the method for extracting the volatile oil of the angelica dahurica and the angelica, which solve the problem that the traditional Chinese medicine needs to be cut or crushed before processing and extraction and simultaneously solve the problem of low extraction efficiency.
Technical scheme
In order to realize the purpose, the invention is realized by the following technical scheme: an extraction device for volatile oil of radix angelicae and angelica sinensis comprises a crushing barrel and a stirring barrel, wherein a top cover is arranged at the upper end of the crushing barrel, a switch valve is arranged at the center of the upper end face of the top cover, a fixed frame is arranged at the center of the lower end face of the top cover, the upper end of the fixed frame is fixedly connected to the lower end face of the top cover, a second motor is arranged in the fixed frame, hanging buckles are respectively arranged on the front side and the rear side of the second motor, the lower ends of the two hanging buckles are respectively and fixedly connected to the upper end face of the top cover, the output end of the second motor penetrates through the lower inner wall of the fixed frame, a rotary blade is fixedly connected to the end part of the second motor, a filter plate is arranged at the lower end of the rotary blade, the side wall of the filter plate is fixedly connected to the inner side wall of the crushing barrel, a first material storage cavity is arranged at the lower end of the crushing barrel, a material discharging pipe is arranged at the center of the lower end face of the first material storage cavity, the upper end of the discharge pipe penetrates through the lower end face of the first material storage cavity, a first conveying pipe is arranged on one side wall of the discharge pipe, one end of the first conveying pipe penetrates through one side wall of the discharge pipe, a material conveying pump is arranged at the other end of the first conveying pipe, and a second conveying pipe is connected to the output end of the material conveying pump;
the automatic feeding device is characterized in that a first motor is arranged at the center of the upper end face of the stirring barrel, a feeding hole is formed in the front side of the first motor, the lower end of the feeding hole penetrates through the upper end face of the stirring barrel, a throwing opening is formed in the rear side of the first motor, the lower end of the throwing opening penetrates through the upper end face of the stirring barrel, the output end of the first motor penetrates through the upper end face of the stirring barrel, an auger is fixedly connected to the end portion of the first motor, a baffle is arranged at the lower end of the auger, one end of the baffle penetrates through one inner side wall of the stirring barrel, a vertical plate is arranged at the center of one side wall of the baffle, a second storage cavity is formed at the lower end of the stirring barrel, a discharge pipe is arranged at the center of the lower end face of the second storage cavity, the upper end of the discharge pipe penetrates through the lower end face of the second storage cavity, a hydraulic telescopic rod is arranged at the position, close to the center of one side wall of the stirring barrel, and the output end of the hydraulic telescopic rod is fixedly connected to one side wall of the vertical plate, the inside wall of agitator is provided with the connecting block by lower extreme department, the inside wall of connecting block is provided with the spout by upper end department, the lower extreme of baffle is provided with places the frame, be provided with the filter screen on placing the inside wall of frame, just place the both sides of frame and cooperate sliding connection respectively in the inside of spout, the two inside walls of agitator all are provided with heating device by upper end department.
Preferably, the other end of the second conveying pipe is fixedly connected to the upper end of the feeding hole.
Preferably, four first supporting columns are arranged on the lower end face of the crushing barrel, and the upper ends of the four first supporting columns are respectively and fixedly connected to four quadrant points on the lower end face of the crushing barrel.
Preferably, one end of the placing frame is fixedly connected with a connecting plate, and a handle is arranged at the center of one side wall of the connecting plate.
Preferably, the lower extreme of conveying pump is provided with the rack, the rack comprises two discs and a cylinder, and the whole body material all adopts the metal.
Preferably, four second support columns are arranged on the lower end face of the stirring barrel.
Preferably, a control valve is arranged on one side wall of the discharge pipe.
Preferably, the other end of the baffle is matched and clamped on an inner side wall of the stirring barrel.
Advantageous effects
The invention provides a device and a method for extracting volatile oil from radix angelicae and angelica sinensis. The method has the following beneficial effects:
1. according to the invention, the radix angelicae and the angelica sinensis can be rapidly crushed by the crushing barrel, and the radix angelicae and the angelica sinensis can be crushed into particles with uniform sizes by the rapid rotation of the second motor and the rotary blade, so that the volatile extraction and the use are convenient.
2. According to the invention, the first motor is arranged at the upper end of the stirring barrel, and the auger in the stirring barrel is driven by the first motor to rotate rapidly, so that the solution in the stirring barrel is rapidly fused with the particles of the angelica dahurica and the angelica sinensis, and the particles of the angelica dahurica and the angelica sinensis are conveniently and rapidly volatilized and extracted.
3. According to the invention, the heating device is arranged on the inner side wall of the stirring barrel, and the heating device is used for heating and insulating the mixed solution in the stirring barrel, so that the volatilization efficiency in the stirring barrel is accelerated, and the angelica dahurica and the angelica sinensis can be better extracted.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a rear view of the mixing bowl of the present invention;
FIG. 3 is a front sectional view of the pulverizing barrel of the present invention;
FIG. 4 is a front sectional view of the mixing bowl of the present invention;
FIG. 5 is a top view of the placement frame of the present invention;
fig. 6 is a top view of a baffle of the present invention.
Wherein, 1, a crushing barrel; 2. a first material storage cavity; 3. a first support column; 4. a discharge pipe; 5. a first delivery pipe; 6. placing a rack; 7. a delivery pump; 8. a discharge pipe; 9. a control valve; 10. a second material storage cavity; 11. a handle; 12. a connecting plate; 13. a stirring barrel; 14. a throwing port; 15. a first motor; 16. a feed inlet; 17. a second delivery pipe; 18. opening and closing the valve; 19. a top cover; 20. hanging buckles; 21. a baffle plate; 22. a second support; 23. a hydraulic telescopic rod; 24. a fixing frame; 25. a second motor; 26. a rotary blade; 27. a filter plate; 28. a packing auger; 29. connecting blocks; 30. a chute; 31. placing the frame; 32. a filter screen; 33. a vertical plate; 34. a heating device.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1-6, an embodiment of the present invention provides an extraction apparatus for volatile oil from angelica dahurica and angelica sinensis, comprising a pulverizing barrel 1 and an agitating barrel 13, wherein a top cover 19 is disposed at the upper end of the pulverizing barrel 1, a switch valve 18 is disposed at the center of the upper end surface of the top cover 19, a fixing frame 24 is disposed at the center of the lower end surface of the top cover 19, the upper end of the fixing frame 24 is fixedly connected to the lower end surface of the top cover 19, a second motor 25 is disposed inside the fixing frame 24, suspension fasteners 20 are disposed at the front and rear sides of the second motor 25, the lower ends of the two suspension fasteners 20 are fixedly connected to the upper end surface of the top cover 19, the output end of the second motor 25 penetrates through the lower inner wall of the fixing frame 24, and the end is fixedly connected with a rotary blade 26, a filter plate 27 is disposed at the lower end of the rotary blade 26, the side wall of the filter plate 27 is fixedly connected to the inner side wall of the pulverizing barrel 1, a first material storage chamber 2 is disposed at the lower end of the pulverizing barrel 1, the lower terminal surface center department of first storage cavity 2 is provided with discharging pipe 4, the lower terminal surface of first storage cavity 2 is run through to the upper end of discharging pipe 4, be provided with first conveyer pipe 5 on the lateral wall of discharging pipe 4, a lateral wall of discharging pipe 4 is run through to the one end of first conveyer pipe 5, the other end of first conveyer pipe 5 is provided with feeding pump 7, be connected with second conveyer pipe 17 on feeding pump 7's the output, feeding pump 7's lower extreme is provided with rack 6, rack 6 comprises two discs and a cylinder, and the whole body material all adopts the metal, be provided with four first pillars 3 on crushing barrel 1's the lower terminal surface, the upper end difference fixed connection of four first pillars 3 is on four quadrant points on crushing barrel 1 lower terminal surface.
A first motor 15 is arranged at the center of the upper end face of the stirring barrel 13, a feed inlet 16 is arranged at the front side of the first motor 15, the lower end of the feed inlet 16 penetrates through the upper end face of the stirring barrel 13, a feed opening 14 is arranged at the rear side of the first motor 15, the lower end of the feed opening 14 penetrates through the upper end face of the stirring barrel 13, the output end of the first motor 15 penetrates through the upper end face of the stirring barrel 13, the end part of the first motor is fixedly connected with a packing auger 28, a baffle 21 is arranged at the lower end of the packing auger 28, one end of the baffle 21 penetrates through one inner side wall of the stirring barrel 13, a vertical plate 33 is arranged at the center of one side wall of the baffle 21, the other end of the baffle 21 is matched and clamped on one inner side wall of the stirring barrel 13, a second storage cavity 10 is arranged at the lower end face of the stirring barrel 13, a discharge pipe 8 is arranged at the center of the lower end face of the second storage cavity 10, the upper end of the discharge pipe 8 penetrates through the lower end face of the second storage cavity 10, a control valve 9 is arranged on one side wall of the discharge pipe 8, a lateral wall center of agitator 13 is provided with hydraulic telescoping rod 23 by lower extreme department, hydraulic telescoping rod 23's output fixed connection is on a lateral wall of riser 33, agitator 13's inside wall is provided with connecting block 29 by lower extreme department, connecting block 29's inside wall is provided with spout 30 by upper end department, baffle 21's lower extreme is provided with places frame 31, it is provided with filter screen 32 on placing frame 31's the inside wall, and place frame 31's both sides cooperation sliding connection respectively in spout 30's inside, place frame 31's one end fixedly connected with connecting plate 12, a lateral wall center department of connecting plate 12 is provided with handle 11, agitator 13's two inside walls all are provided with heating device 34 by upper end department, second conveyer pipe 17's other end fixed connection is in the upper end of feed inlet 16, be provided with four second pillars 22 on agitator 13's the lower terminal surface.
A method for extracting volatile oil from radix Angelicae Dahuricae and radix Angelicae sinensis comprises the following steps,
s1; pulverizing radix Angelicae Dahuricae and radix Angelicae sinensis; the top cover 19 is opened from the upper end of the crushing barrel 1 through the rotary switch valve 18, the top cover 19 is opened from the upper end of the crushing barrel 1 through the two hanging buckles 20 at the upper end of the top cover 19, the angelica dahurica and the angelica are placed in the crushing barrel 1, the rotary blade 26 is driven to rotate rapidly through the second motor 25, so that the angelica dahurica and the angelica are crushed into smaller particles, and finally the smaller particles are filtered and screened through the filter plate 27, and the mixed particles are accumulated in the first material storage cavity 2;
s2; conveying the crushed particles; the granules in the first storage cavity 2 are conveyed to the inner part of the stirring barrel 13 through the matching of the first conveying pipe 5 and the second conveying pipe 17 by using the material conveying pump 7;
s3; adding a reagent, stirring and fusing; quantitative ethanol solution is put in through the putting opening 14, and the solution inside is rapidly stirred through the cooperation of the first motor 15 and the packing auger 28, so that the fusion of the ethanol solution is accelerated, and the ethanol solution is conveniently and rapidly volatilized and extracted;
s4; heating and preserving heat; under the rapid stirring of the first motor 15 and the auger 28, the solution is well fused, and the heating device 34 on the inner side wall of the stirring barrel 13 is started to heat and preserve heat of the solution inside, so that the volatilization extraction efficiency is accelerated;
s5; filtering, standing and collecting; by controlling the hydraulic telescopic rod 23 to move the baffle 21 from the inside of the stirring barrel 13, the solution is conveyed downwards through the matching of the placing frame 31 and the filter screen 32, so that oily matters in the solution are accumulated on the upper end surface of the filter screen 32, and the extract in the solution is obtained after the solution is static for a period of time.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides an extraction element of volatile oil of dahurian angelica root and chinese angelica, includes crushing bucket (1), agitator (13), its characterized in that: a top cover (19) is arranged at the upper end of the crushing barrel (1), a switch valve (18) is arranged at the center of the upper end face of the top cover (19), a fixed frame (24) is arranged at the center of the lower end face of the top cover (19), the upper end of the fixed frame (24) is fixedly connected to the lower end face of the top cover (19), a second motor (25) is arranged inside the fixed frame (24), suspension fasteners (20) are respectively arranged at the front side and the rear side of the second motor (25), the lower ends of the two suspension fasteners (20) are respectively fixedly connected to the upper end face of the top cover (19), the output end of the second motor (25) penetrates through the lower inner wall of the fixed frame (24), a rotary blade (26) is fixedly connected to the end part of the output end part of the second motor, a filter plate (27) is arranged at the lower end of the rotary blade (26), and the side wall of the filter plate (27) is fixedly connected to the inner side wall of the crushing barrel (1), a first material storage cavity (2) is formed in the lower end of the crushing barrel (1), a material discharging pipe (4) is arranged in the center of the lower end face of the first material storage cavity (2), the upper end of the material discharging pipe (4) penetrates through the lower end face of the first material storage cavity (2), a first conveying pipe (5) is arranged on one side wall of the material discharging pipe (4), one end of the first conveying pipe (5) penetrates through one side wall of the material discharging pipe (4), a material conveying pump (7) is arranged at the other end of the first conveying pipe (5), and a second conveying pipe (17) is connected to the output end of the material conveying pump (7);
the upper end face center of the stirring barrel (13) is provided with a first motor (15), the front side of the first motor (15) is provided with a feed inlet (16), the lower end of the feed inlet (16) penetrates through the upper end face of the stirring barrel (13), the rear side of the first motor (15) is provided with a throwing port (14), the lower end of the throwing port (14) penetrates through the upper end face of the stirring barrel (13), the output end of the first motor (15) penetrates through the upper end face of the stirring barrel (13), the end part of the first motor is fixedly connected with an auger (28), the lower end of the auger (28) is provided with a baffle (21), one end of the baffle (21) penetrates through an inner side wall of the stirring barrel (13), a side wall center of the baffle (21) is provided with a vertical plate (33), the lower end of the stirring barrel (13) is provided with a second storage cavity (10), the lower end face center of the second storage cavity (10) is provided with a storage pipe (8), the lower terminal surface of second storage cavity (10) is run through to the upper end of delivery pipe (8), a lateral wall center of agitator (13) is provided with hydraulic telescoping rod (23) by lower extreme department, the output fixed connection of hydraulic telescoping rod (23) is on a lateral wall of riser (33), the inside wall of agitator (13) is provided with connecting block (29) by lower extreme department, the inside wall of connecting block (29) is provided with spout (30) by upper end department, the lower extreme of baffle (21) is provided with places frame (31), be provided with filter screen (32) on placing the inside wall of frame (31), just place the both sides of frame (31) and cooperate sliding connection respectively in the inside of spout (30), the both inside walls of agitator (13) all are provided with heating device (34) by upper end department.
2. The device for extracting volatile oil from angelica dahurica and angelica sinensis as claimed in claim 1, wherein: the other end of the second conveying pipe (17) is fixedly connected to the upper end of the feeding hole (16).
3. The device for extracting volatile oil from angelica dahurica and angelica sinensis as claimed in claim 1, wherein: four first pillars (3) are arranged on the lower end face of the crushing barrel (1), and the upper ends of the four first pillars (3) are respectively and fixedly connected to four quadrant points on the lower end face of the crushing barrel (1).
4. The device for extracting volatile oil from angelica dahurica and angelica sinensis as claimed in claim 1, wherein: one end of the placing frame (31) is fixedly connected with a connecting plate (12), and a handle (11) is arranged at the center of one side wall of the connecting plate (12).
5. The device for extracting volatile oil from angelica dahurica and angelica sinensis as claimed in claim 1, wherein: the lower extreme of conveying pump (7) is provided with rack (6), rack (6) comprise two discs and a cylinder, and the whole body material all adopts the metal.
6. The device for extracting volatile oil from angelica dahurica and angelica sinensis as claimed in claim 1, wherein: and four second supporting columns (22) are arranged on the lower end face of the stirring barrel (13).
7. The device for extracting volatile oil from angelica dahurica and angelica sinensis as claimed in claim 1, wherein: and a control valve (9) is arranged on one side wall of the discharge pipe (8).
8. The device for extracting volatile oil from angelica dahurica and angelica sinensis as claimed in claim 1, wherein: the other end of the baffle (21) is matched and clamped on an inner side wall of the stirring barrel (13).
9. A method for extracting volatile oil from radix Angelicae Dahuricae and radix Angelicae sinensis is characterized by comprising the following steps,
s1; pulverizing radix Angelicae Dahuricae and radix Angelicae sinensis; the top cover (19) is opened from the upper end of the crushing barrel (1) through the rotary switch valve (18), the top cover (19) is opened from the upper end of the crushing barrel (1) through the two hanging buckles (20) at the upper end of the top cover (19), the angelica dahurica and the angelica sinensis are placed inside the crushing barrel (1), the rotary blade (26) is driven to rotate rapidly through the second motor (25), so that the angelica dahurica and the angelica sinensis are crushed into small particles, and finally the small particles are filtered and screened through the filter plate (27), and mixed particles are accumulated inside the first material storage cavity (2);
s2; conveying the crushed particles; the granules in the first storage cavity (2) are conveyed to the inside of the stirring barrel (13) through the matching of the first conveying pipe (5) and the second conveying pipe (17) by using a material conveying pump (7);
s3; adding a reagent, stirring and fusing; quantitative ethanol solution is put in through the putting opening (14), and the solution inside is rapidly stirred through the matching of the first motor (15) and the packing auger (28), so that the fusion of the ethanol solution is accelerated, and the ethanol solution is conveniently and rapidly volatilized and extracted;
s4; heating and preserving heat; under the rapid stirring of the first motor (15) and the auger (28), the solution is well fused, and the heating and heat preservation treatment is carried out on the solution inside by starting the heating device (34) on the inner side wall of the stirring barrel (13), so that the volatilization extraction efficiency is accelerated;
s5; filtering, standing and collecting; the baffle (21) is moved from the inside of the stirring barrel (13) by controlling the hydraulic telescopic rod (23), the solution is conveyed downwards to pass through the matching of the placing frame (31) and the filter screen (32), so that oily matters in the solution are accumulated on the upper end surface of the filter screen (32), and the extract in the solution is obtained after the solution is static for a period of time.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210631936.9A CN114699798A (en) | 2022-06-07 | 2022-06-07 | Device and method for extracting volatile oil of radix angelicae and angelica sinensis |
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| CN202210631936.9A CN114699798A (en) | 2022-06-07 | 2022-06-07 | Device and method for extracting volatile oil of radix angelicae and angelica sinensis |
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Application publication date: 20220705 |