CN207786003U - A kind of continuous extraction apparatus - Google Patents
A kind of continuous extraction apparatus Download PDFInfo
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- CN207786003U CN207786003U CN201721887720.XU CN201721887720U CN207786003U CN 207786003 U CN207786003 U CN 207786003U CN 201721887720 U CN201721887720 U CN 201721887720U CN 207786003 U CN207786003 U CN 207786003U
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Abstract
A kind of continuous extraction apparatus provided by the utility model includes tank body, extract module and separating modules, the tank body is equipped with feed inlet, cavity and discharge port, the separating modules are horizontally installed in the cavity, the extraction module is slidably connected the separating modules, the separating modules separate the cavity and form extraction chamber and discharging chamber, the feed inlet is connected to the extraction chamber and the external world, the discharge port is connected to the discharging chamber and the external world, the separating modules are equipped with multiple separate intervals, the extraction module carries out continuous rotation with an interval time, it is able to cyclically pass through each separate interval successively.To which it is by cycling extraction pattern, extracting operation is simple, realizes the rapidly, continuously extraction of material.
Description
Technical field
The utility model is related to chemical machinery fields, specifically, being a kind of continuous extraction apparatus.
Background technology
Solvent extraction operation is that a kind of extractant is added in material, so that extractant and material is sufficiently mixed so as to be intended to point
From substance can it is more be dissolved in extractant, achieve the purpose that the active compound separation and Extraction in material.Extraction equipment
It is common leaching in medication chemistry, existing extraction equipment generally uses intermittent operation, stands extraction, i.e. handle
Material and extractant are sufficiently mixed in extraction equipment, stir, and according to material characteristic, stand after a certain period of time, will contain material
Extract liquor extraction, obtain required active ingredient using filtering, extract liquor evaporation.Extraction equipment purposes than wide,
It is suitble to produce in enormous quantities, time of repose is relatively long, needs the special material rapidly, continuously extracted to be then not suitable for some, extraction
Device is taken also to be more troublesome the extraction replacement of different material.
Utility model content
The main purpose of the utility model is to provide a kind of continuous extraction apparatus, overcome the deficiencies in the prior art,
By cycling extraction pattern, extracting operation is simple, realizes the rapidly, continuously extraction of material.
The another object of the utility model is to provide a kind of continuous extraction apparatus, by sectional feeding, realizes that side extracts
It takes side to discharge, once discharges different from a filler in existing apparatus, suitable for needing the material of Rapid Extraction.
The another object of the utility model is to provide a kind of continuous extraction apparatus, passes through automatic feed, extraction, discharging
With integrally working continuously for deslagging, the extraction efficiency of material pair is effectively improved, does not need longer time of repose so that extraction is made
The more flexible control of industry.
The another object of the utility model is to provide a kind of continuous extraction apparatus, by extracting module and separating modules
Cooperation, be achieved and separate repeated multiple times extraction and automatic discharge, simple in structure, reliable operation.
To achieve the above objectives, the technical solution adopted in the utility model is：A kind of continuous extraction apparatus includes tank body, extraction
Modulus block and separating modules, the tank body are equipped with feed inlet, cavity and discharge port, and the separating modules are horizontally installed on
In the cavity, the extraction module is slidably connected the separating modules, and the separating modules separate the cavity and formed
Chamber and discharging chamber are extracted, the feed inlet is connected to the extraction chamber and the external world, and the discharge port is connected to the discharging chamber and the external world,
The separating modules are equipped with multiple separate intervals, and the extraction module carries out continuous rotation with an interval time, is able to cyclically
Pass through each separate interval successively.
An embodiment according to the present utility model, the separate interval include a charging section, at least one extraction section, one
Between material waiting section and one slags tap section, and the feed inlet circlewise separates setting towards the charging section, the extraction section
Between between the charging section and the material waiting section, extractant is continuously sprayed on the extraction section, the discharge port
It is connected to the extraction section and the external world, section of slagging tap described between the material waiting section, wherein the charging section is starting work
Position, the section of slagging tap is end station.
An embodiment according to the present utility model, the extraction module include extraction cells, sieve plate and movable pulley, described
Extraction cells are vertically uniformly installed on the separating modules, and each extraction cells are with an interval time successively each
The separate interval cycle rotation, the sieve plate are articulated with the bottom of the extraction cells, are able to extract described in open or close
The bottom of unit, the movable pulley are fixed in the lower section of the sieve plate, obtain so that the extraction cells are along the separating modules
Annular rotation.
An embodiment according to the present utility model, the tank body are equipped with decelerating motor and drive shaft, the driving axle position
In the central shaft of the tank body, the drive shaft rotation is driven to the decelerating motor adjustable speed, described in the driving axis connection
Extract module, be able to drive each extraction cells to carry out continuous rotation with an interval time, wherein the extraction module into
One step includes a pair of of fixed plate, and the fixed plate connects the extraction cells and the drive shaft at interval in the upper and lower.
An embodiment according to the present utility model, the separating modules include supporting rack and rail plate, the support
It is provided with demarcation strip, support frame as described above is radially uniformly divided into each separate interval, the rail plate by the demarcation strip
It is annularly disposed on support frame as described above, the movable pulley of each extraction cells is slided along the rail plate.
An embodiment according to the present utility model, the rail plate is equipped with fracture, horizontal segment and tilting section, described to incline
Oblique section tilts down extension from one end of the horizontal segment, and the fracture is opened in the other end of the horizontal segment and the inclination
Between section, the fracture is located at the rail plate in the section of slagging tap, and by the whereabouts of the movable pulley or moves up and is able to phase
Automatically open or be closed the sieve plate with answering.
An embodiment according to the present utility model, the tank body are equipped with multiple extractant sprinkling modules, each extraction
Take agent sprinkling module compartment of terrain oppositely facing each extraction section, the extraction cells sprinkling being able on the extraction section
Extractant, the tank body are further provided with multiple discharge ports and a waste outlet, and the discharge port is located at the extraction section
And the underface in material waiting section, it is able to be connected to the discharging chamber and the external world, section of slagging tap described in the waste outlet connection.
An embodiment according to the present utility model, the extraction module further comprise that baffle, the extraction cells are equipped with
Upper opening and under shed, the sieve plate can be opened and closed to be connected to the under shed, the baffle circlewise from be open on described to
Upper protrusion is able to surround the upper opening.
Description of the drawings
Fig. 1 is the schematic diagram of the continuous extraction apparatus of a preferred embodiment according to the present utility model.
Fig. 2 is the vertical view of the continuous extraction apparatus of above preferred embodiment according to the present utility model.
Fig. 3 A are the sectional views of the line A-A according to the present utility model along Fig. 1.
Fig. 3 B are the extraction cells sliding schematic diagrames of above preferred embodiment according to the present utility model.
Fig. 4 is the sectional view of the line B-B according to the present utility model along Fig. 1.
Fig. 5 is the schematic diagram of the extraction module of above preferred embodiment according to the present utility model.
Fig. 6 A are the extractant sprinkling module schematic diagrames of above preferred embodiment according to the present utility model.
Fig. 6 B are the rail plate schematic diagrames of above preferred embodiment according to the present utility model.
Specific implementation mode
It is described below for disclosing the utility model so that those skilled in the art can realize the utility model.It retouches below
Preferred embodiment in stating is only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.
It is a kind of continuous extraction apparatus as shown in Fig. 1 to Fig. 6 B, the continuous extraction apparatus includes tank body 10, extraction mould
Block 20 and separating modules 30, the tank body 10 are equipped with feed inlet 101, cavity 11 and discharge port 13, the separating modules 30
It is horizontally installed in the cavity 11, the extraction module 20 is slidably connected the separating modules 30, the separation mould
Block 30 separates the cavity 11 and forms extraction chamber 111 and discharging chamber 112, and the feed inlet 101 is connected to the extraction chamber 111 and outside
Boundary, the discharge port 13 are connected to the discharging chamber 112 and the external world, and the separating modules 30 are equipped with multiple separate intervals 33, described
It extracts module 20 and continuous rotation is carried out with an interval time, be able to cyclically pass through each separate interval 33 successively.To
, by cycling extraction pattern, extracting operation is simple for it, realizes the rapidly, continuously extraction of material.
The separate interval 33 includes 333 and one between a charging section 331, at least one extraction section 332, a material waiting section
Slag tap section 334, the charging section 331 is the initial station of the extraction module 20, the feed inlet 101 towards it is described into
Expect section 331, material is able to enter in the extraction module 20 on the charging section 331 from the feed inlet 101, described
Between extraction section 332 circlewise separates and is set to 333 between the charging section 331 and the material waiting section, extractant is continuously
It is sprayed on the extraction section 332, the discharge port 13 is connected to the extraction section 332 and the external world, 333 between the material waiting section
The section 334 of slagging tap, 333 for waiting for extract liquor fully to ooze out between the material waiting section, reduces extractant and effectively
The loss of ingredient, the section 334 of slagging tap are the end station of the extraction module 20, are able to the useless of the extraction module 20
Slag is discharged, and is rotated further by the charging section 331.
The extraction section 332 includes beginning section c1, centre section c2~c4 and end section c5, and the beginning section c1 is adjacent
The nearly charging section 331, the intermediate section c2~c4 are circlewise separated between the beginning section c1 and end section c5, institute
Last section c5 is stated 333 between the material waiting section.
The tank body 10 is equipped with multiple extractant sprinkling modules 12, each 12 compartment of terrain phase of the extractant sprinkling module
Extractant is sprayed to towards each extraction section 332, being able to the extraction module 20 on the extraction section 332.Wherein,
Each extractant sprinkling module 12 is equipped with a spout 121 and an at least nozzle 122, and extract liquor enters from the spout 121
It is sprayed again from the nozzle 122.
Preferably, the separate interval 33 is equipped with eight, there are five the extraction section 332 is set, five extractants
Sprinkling module 12 corresponds to each extraction section 332, wherein nozzle 122 there are one the beginning section c1 and end section c5 is each,
Each intermediate section c2~c4 is set there are two nozzle 122, is obtained repeatedly fully convenient for the material in the extraction module 20
Ground extracts repeatedly, while 333 will not be interfered between the charging section 331 and the material waiting section at both ends.
The extraction module 20 includes extraction cells 21, sieve plate 24 and movable pulley 23, and the extraction cells 21 are vertically
Uniformly be installed on the separating modules 30, each extraction cells 21 in turn the charging section 331 and it is described go out
Cycle rotation between slag section 334, correspondingly, the extraction cells 21 have eight, and the sieve plate 24 is articulated with the extraction
The bottom of unit 21 is able to the bottom of extraction cells 21 described in open or close, and for waste discharge slag, the movable pulley 23 is affixed
In the lower section of the sieve plate 24, obtain so that the extraction cells 21 are rotated along 30 annular of the separating modules.
That is, the extraction cells 21 can go to each separate interval 33 successively by turns, automatic order
It fed, extracted and the circulate operation of deslagging.
The tank body 10 is equipped with decelerating motor 14 and drive shaft 15, and the drive shaft 15 is located at the center of the tank body 10
Axis drives to 14 adjustable speed of the decelerating motor 15 rotation of the drive shaft, the drive shaft 15 to connect the extraction module 20,
It is able to that each extraction cells 21 is driven to carry out continuous rotation with an interval time.
The extraction module 20 further comprises that a pair of of fixed plate 22, the fixed plate 22 connect the extraction at interval in the upper and lower
Take unit 21 and the drive shaft 15 so that the extraction cells 21 are with certain speed and interval time cycle rotation.
The extraction module 20 further comprises that baffle 25, the extraction cells 21 are equipped with upper opening 212 and under shed
211, the sieve plate 24 can be opened and closed to be connected to the under shed 211, and the baffle 25 is circlewise upward from the upper opening 212
It is prominent, it is able to surround the upper opening 212, the extractant sprayed to the extraction cells 21 is effectively prevent to splash.
The separating modules 30 include supporting rack 31 and rail plate 32, and support frame as described above 31 is equipped with demarcation strip 311, institute
It states 311 radial direction of demarcation strip and support frame as described above 31 is uniformly divided into each separate interval 33, be enhanced support frame as described above 31
Support strength, the rail plate 32 is annularly disposed on support frame as described above 31, the sliding of each extraction cells 21
Wheel 23 is slidably mounted on the rail plate 32, is able to drive the extraction cells 21 along 32 turns of the rail plate
It is dynamic.
Wherein, the rail plate 32 be equipped with fracture 321, horizontal segment 322 and tilting section 323, the tilting section 323 from
One end of the horizontal segment 322 tilts down extension, and the horizontal segment 322 is horizontal arcuate structure, and the fracture 321 is opened in
Between the other end of the horizontal segment 322 and the tilting section 323, the fracture 321 is located at the section 334 of slagging tap, and works as institute
When stating extraction cells 21 and being moved to the fracture 321, the movable pulley 23 of the extraction cells 21 loses the rail plate 32
It supports and moves down, the sieve plate 24 is driven to rotate down, open the under shed 211 of the extraction cells 21, be moved out
Waste residue drives the sieve plate 24 to move up, is closed again when the movable pulley 23 is moved up along the tilting section 323
The under shed 211 is closed, as shown in Figure 3B.
The tank body 10 is further provided with multiple discharge ports 13, and the discharge port 13 is located at the extraction section 332 and waits for
Expect the underface in section 333, that is, at 112 minimum point of the discharging chamber, corresponds to each extraction section 332
333 between the material waiting section.Wherein, each extraction section 332 is correspondingly set there are one discharge port 13, the material waiting section
Between set that there are two the discharge ports 13 in 333, as shown in e1~e7 in Fig. 4.
The tank body 10 is further provided with waste outlet 102, and the waste outlet 102 is connected to the section 334 of slagging tap, obtains
To carry out automatic discharge.
Multiple cleaning holes are additionally provided in the tank body 10 to clean the cavity 11.
The tank body 10 is further provided with air intlet 103, and the air intlet 103 is set to the upper of the tank body 10
End, the pressure equilibrium being maintained in the cavity 11.
The tank body 10 is further provided with stabilizer blade 16 and adjusting bolt, is able to adjust the stabilizer blade by the adjusting bolt
16 support balance.
The rotation direction that the extraction cells 21 are controlled according to the decelerating motor 14, can be rotated clockwise or the inverse time
Needle rotates.
When carrying out extraction operation, a certain number of materials enter the extraction list of underface from the feed inlet 101
In member 21, until material fills up the extraction cells 21, the decelerating motor 14 controls the drive shaft 15 and rotates clockwise, institute
State drive shaft 15 drives the extraction cells 21 to rotate clockwise by the fixed plate 22, and extract liquor enters the spout 121
It is sprayed by the nozzle 122, the nozzle 122 in the extractant sprinkling module 12 starts simultaneously at sprinkling extractant, and always
Keep sprinkling state when stopping (do not sprayed when also rotatable, spraying).Since 21 bottom of the extraction cells is sieve plate 24, contain object
Material ingredient extractant be able to after filtering outflow under shed 211, flow in the discharging chamber 112 being mutually separated, it is described go out
Expect that chamber 112 is equipped with the discharge port 13 close to the place of minimum point, extractant is pumped away, can be carried out cycling extraction or directly be used
It is purified in next step.Wait for certain time that (same material interval time is identical, according to different material characteristics, can be arranged not
With interval time), and after next extraction cells 21 fill filler, the decelerating motor 14 works, and the extraction is singly
The mobile lattice clockwise of member 21, start to carry out extraction operation to the material in second extraction cells 21.It is subsequent each
The extraction cells 21 also carry out extraction operation in this mode, between first extraction cells 21 runs to the material waiting section
When 333, the extraction operation of the extraction cells 21 is completed, and by the waiting of a time, after to be extracted dose fully oozes out, then is turned
To the section 334 of slagging tap, since the rail plate 32 in the section 334 of slagging tap has excalation, the movable pulley 23 to lose
It goes support to fall, falls to the tilting section 323 of the rail plate 32, is i.e. the left end bottom of the rail plate 32, the sieve
Plate 24 is opened therewith, and waste material falls to lower zone, is discharged by the waste outlet 102.Also pass through a time interval
Afterwards, the extraction cells 21 rotate, and the sieve plate 24 of first extraction cells 21 returns to track because of the movable pulley 23
And reclose, the charging section 331 is gone to by turns, starts to feed, and in cycles, new one wheel extraction operation starts.
To which material by entering the extraction equipment at times, it is achieved and discharges in extraction, it is primary to be different from existing device
Filler once discharges, and is suitable for the material for needing rapidly, continuously to extract.
A kind of application process of continuous extraction apparatus comprising step：
S100 sectional feedings, material piecewise enter the extraction on the charging section 331 by the feed inlet 101
It takes in unit 21；
S200 is extracted and discharging, with extraction cells 21 described in an interval time continuous rotation, the extractant sprinkling module
12 spray extractant to the extraction section 332, and the extraction cells 21 are passed through each described successively along the sliding rail
It extracts 333 between section 332 and material waiting section, is flowed to by the sieve plate 24 of the extraction cells 21 containing material component extractant described
Discharging chamber 112 obtains so that the material of the extraction cells 21 discharges in extraction；
S300 deslagginves, after an interval time, the extraction cells 21 go to described slag tap between the material waiting section 333
The movable pulley 23 in section 334,21 bottom of the extraction cells falls to the fracture 321 of the rail plate 32, drives the sieve
Plate 24 rotates down, and is able to downwards fall the waste material of the extraction cells 21, is discharged by the waste outlet 102 described
Tank body 10；
S400 recycle feeds, after also passing through an interval time, the extraction cells 21 are from the section 334 of slagging tap to institute
It states charging section 331 to rotate, the movable pulley 23 is moved up along the tilting section 323 of the rail plate 32, described in return
The horizontal segment 322 of sliding rail drives the sieve plate 24 to be rotated up and is closed the extraction cells 21, recycle feed, a new round
Extraction operation start.
Wherein, the step S200 includes step：
After S210 materials fill up the extraction cells 21, the decelerating motor 14 drives the drive shaft 15 to rotate, and drives
The extraction cells 21 rotate clockwise, and start to spray extractant, the extraction cells 21 go to institute from the charging section 331
State the beginning section c1 in extraction section 332；
Extraction cells 21 described in S220 pass through each middle area from the beginning section c1 successively with the interval time
Between c2~c4, then go to the end section c5, the extractant sprinkling module 12 is in sprinkling state always, obtains so that the extraction
The extraction cells 21 in section 332 are taken to be carried out at the same time repeatedly extraction and discharging；
Extraction cells 21 described in S230 from the end section c5 go to the material waiting section between 333, by an interval
The waiting of time, the extractant containing material component are oozed out from the extraction cells 21, then go to the section 334 of slagging tap, often
Rotation is primary, and the extraction cells 21 correspondingly go to each separate interval 33.
Basic principles, main features, and advantages of the present invention has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Only the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model the utility model also have respectively
Kind changes and improvements, these changes and improvements are both fallen in claimed the scope of the utility model.The requires of the utility model
Protection domain defined by appended claims and its equivalent.
Claims (8)
1. a kind of continuous extraction apparatus, which is characterized in that be equipped with including tank body, extraction module and separating modules, the tank body
Feed inlet, cavity and discharge port, the separating modules are horizontally installed in the cavity, and the extraction module is slideably
The separating modules are connected, the separating modules separate the cavity and form extraction chamber and discharging chamber, and the feed inlet is connected to institute
Extraction chamber and the external world are stated, the discharge port is connected to the discharging chamber and the external world, and the separating modules are equipped with multiple separate intervals, institute
It states extraction module and continuous rotation is carried out with an interval time, be able to cyclically pass through each separate interval successively.
2. continuous extraction apparatus according to claim 1, which is characterized in that the separate interval include one charging section,
At least one extraction section, between a material waiting section and one slags tap section, the feed inlet is towards the charging section, the extraction section
Between circlewise separate be set between the charging section and the material waiting section between, extractant is continuously sprayed on the extraction section
Between on, the discharge port is connected to the extraction section and the external world, it is neighbouring between the material waiting section described in slag tap section, wherein it is described
Charging section is initial station, and the section of slagging tap is end station.
3. continuous extraction apparatus according to claim 2, which is characterized in that the extraction module includes extraction cells, sieve
Plate and movable pulley, the extraction cells are vertically uniformly installed on the separating modules, and each extraction cells are with one
The sieve plate was articulated with the bottom of the extraction cells, was able to successively in each separate interval cycle rotation interval time
The bottom of extraction cells described in open or close, the movable pulley are fixed in the lower section of the sieve plate, obtain so that the extraction is single
Member is rotated along the separating modules annular.
4. continuous extraction apparatus according to claim 3, which is characterized in that the tank body is equipped with decelerating motor and driving
Axis, the drive shaft are located at the central shaft of the tank body, drive to the decelerating motor adjustable speed drive shaft rotation, described
Module is extracted described in driving axis connection, is able to that each extraction cells is driven to carry out continuous rotation with an interval time, wherein
The extraction module further comprises that a pair of of fixed plate, the fixed plate connect the extraction cells and the drive at interval in the upper and lower
Moving axis.
5. continuous extraction apparatus according to claim 4, which is characterized in that the separating modules include supporting rack and cunning
Dynamic guide rail, support frame as described above are equipped with demarcation strip, and support frame as described above is radially uniformly divided into each marker space by the demarcation strip
Between, the rail plate is annularly disposed on support frame as described above, and the movable pulley of each extraction cells is along the sliding
Guide rail slides.
6. continuous extraction apparatus according to claim 5, which is characterized in that the rail plate is equipped with fracture, horizontal segment
And tilting section, the tilting section tilt down extension from one end of the horizontal segment, the fracture is opened in the horizontal segment
The other end and the tilting section between, the fracture is located at the rail plate in the section of slagging tap, and passes through the movable pulley
Whereabouts or move up and be able to correspondingly automatically open or be closed the sieve plate.
7. continuous extraction apparatus according to claim 6, which is characterized in that the tank body is equipped with multiple extractant sprinklings
Module, each extractant sprinkling module compartment of terrain are able to oppositely facing each extraction section to the extraction section
On extraction cells spray extractant, the tank body is further provided with multiple discharge ports and a waste outlet, the discharge port
Underface in the extraction section and material waiting section is able to be connected to the discharging chamber and the external world, and the waste outlet connects
The logical section of slagging tap.
8. continuous extraction apparatus according to claim 7, which is characterized in that the extraction module further comprises baffle,
The extraction cells are equipped with upper opening and under shed, and the sieve plate can be opened and closed to be connected to the under shed, the baffle annular
Ground is protruded from the upper opening upwards, is able to surround the upper opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721887720.XU CN207786003U (en) | 2017-12-28 | 2017-12-28 | A kind of continuous extraction apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721887720.XU CN207786003U (en) | 2017-12-28 | 2017-12-28 | A kind of continuous extraction apparatus |
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| CN207786003U true CN207786003U (en) | 2018-08-31 |
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| CN201721887720.XU Active CN207786003U (en) | 2017-12-28 | 2017-12-28 | A kind of continuous extraction apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108176076A (en) * | 2017-12-28 | 2018-06-19 | 宁波腾威食品机械制造有限公司 | A kind of continuous extraction apparatus and its application process |
| CN113289376A (en) * | 2021-06-17 | 2021-08-24 | 黑龙江省林业科学院伊春分院 | Device and method for extracting effective components of acanthopanax |
| CN114042334A (en) * | 2021-11-18 | 2022-02-15 | 黑龙江职业学院(黑龙江省经济管理干部学院) | Traditional Chinese medicine microwave extraction device |
-
2017
- 2017-12-28 CN CN201721887720.XU patent/CN207786003U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108176076A (en) * | 2017-12-28 | 2018-06-19 | 宁波腾威食品机械制造有限公司 | A kind of continuous extraction apparatus and its application process |
| CN108176076B (en) * | 2017-12-28 | 2023-08-15 | 宁波腾威食品机械制造有限公司 | Continuous extraction device and application method thereof |
| CN113289376A (en) * | 2021-06-17 | 2021-08-24 | 黑龙江省林业科学院伊春分院 | Device and method for extracting effective components of acanthopanax |
| CN114042334A (en) * | 2021-11-18 | 2022-02-15 | 黑龙江职业学院(黑龙江省经济管理干部学院) | Traditional Chinese medicine microwave extraction device |
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