CN105771312A - Secondary leaching and extraction equipment applied to extraction of active ingredients of rhododendron simsii - Google Patents
Secondary leaching and extraction equipment applied to extraction of active ingredients of rhododendron simsii Download PDFInfo
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- CN105771312A CN105771312A CN201610303869.2A CN201610303869A CN105771312A CN 105771312 A CN105771312 A CN 105771312A CN 201610303869 A CN201610303869 A CN 201610303869A CN 105771312 A CN105771312 A CN 105771312A
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- extraction
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- stripper
- leaching
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
- B01J19/1862—Stationary reactors having moving elements inside placed in series
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00277—Apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00781—Aspects relating to microreactors
- B01J2219/00905—Separation
- B01J2219/00909—Separation using filters
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- Organic Chemistry (AREA)
- Extraction Or Liquid Replacement (AREA)
Abstract
The invention relates to secondary leaching and extraction equipment applied to extraction of active ingredients of rhododendron simsii. The equipment comprises first and second leaching and extraction devices for sequentially extracting the rhododendron simsii and first and second filtering devices for performing solid and liquid separation on extracted materials in the first and second leaching and extraction devices respectively, wherein a liquid outlet of the first filtering device is connected with an extracting solution storage tank, and a liquid outlet of the second filtering device is connected with an extracting agent inlet of the first leaching and extraction device. According to the scheme, rhododendron simsii leaves/flowers are extracted in the first and second leaching and extraction devices respectively, and filtrate obtained by filtration and separation is adopted as an extracting agent for primary extraction due to the fact that an extracting solution obtained by secondary extraction of the rhododendron simsii leaves/flowers is low in pigment/flavone concentration, so that the pigment/flavone concentration of the extracting solution is increased to facilitate subsequent distillation and concentration treatment; in addition, two-stage extraction is adopted, so that the extraction period can be effectively shortened, energy resources can be saved, and the pigment/flavone production rate can be increased.
Description
The present invention is the applying date is on 07 18th, 2015, and application number is: 201510428917.6, and denomination of invention is the divisional application of the patent of invention of " two grades of extraction equipments of Rhododendron simsii Planch. ".
Technical field
The present invention relates to active component and extract field, be specifically related to a kind of two grades of extraction equipments being applied to the extraction of Rhododendron simsii Planch. active component.
Background technology
Extract field in natural activity component, often need to use extraction element that the root of natural plants, stem, leaf are carried out lixiviate so that the active component in herbaceous plant root, stem, leaf is dissolved in extractant, thus realizing the extraction to active component.What the extraction pot of existing use existed material mostly adds the problem loaded down with trivial details and consuming time with discharging, has a strong impact on the production efficiency of natural activity component.Additionally, extraction for natural activity component, all there is a best material ratio (under this material, the extraction ratio of active component and/or extraction efficiency are maximum), but feeding intake of extraction pot of tradition is difficult to control accurately material ratio, make extraction ratio and/or extraction efficiency be unable to reach the best, have a strong impact on production efficiency and cause wastage of material.
Summary of the invention
It is an object of the invention to provide a kind of two grades of extraction equipments being applied to the extraction of Rhododendron simsii Planch. active component, it can realize the rapid extraction to Rhododendron simsii Planch. active component, and in extracting solution, the concentration of active component is high, it is simple to follow-up concentrating and purifying processes and saves the energy.
For achieving the above object, present invention employs techniques below scheme:
nullA kind of two grades of extraction equipments being applied to the extraction of Rhododendron simsii Planch. active component，It is characterized in that: include successively Rhododendron simsii Planch. is extracted first、Two leaching devices and respectively to extract after first、Material in two leaching devices carries out the first of solid-liquid separation、Two defecators，The liquid outlet of the first defecator is connected with extracting solution storage tank，The liquid outlet of the second defecator and the extractant import of the first leaching device are connected，First、Two leaching devices include extraction pot and horizontally disposed shaft，It is respectively arranged with mounting seat in the middle part of the lateral wall, both sides that extraction pot is relative，Shaft two ends are rotatably installed in mounting seat，Shaft and the 3rd driving mechanism are connected，Shaft is positioned on the axle body of extraction pot and is provided with rabbling mechanism，The first adjusting part that the top of extraction pot is provided with dog-house and the closure state to dog-house is adjusted，The second adjusting part that the bottom of extraction pot is provided with discharge port and the closure state to discharge port is adjusted，First adjusting part includes the slide rail that the grooved part of opening upwards is constituted，The vacancy portion that grooved part bottom land is offered constitutes dog-house，Slide rail is arranged in the horizontal direction，Slide rail is provided with slide block，Slide block and slide rail constitute slide-and-guide along the length direction of slide rail and are connected cooperation，The bottom land of the bottom surface of slide block and grooved part fits，Slide block is provided with the hopper that vertical shape is arranged，Slide block offers into opening shape with the junction of feed hopper bottom material mouth，Slide block and the first driving mechanism are connected；nullSecond adjusting part includes in extraction pot discharge port place、Under circular first that be arranged in parallel、Two strippers，First stripper and extraction pot are fixed with one，The side of the second stripper offers cannelure，Second stripper is rotatably assorted around vertical composition by the steel ball assembly that arranges in cannelure and extraction pot and is connected，First、The center of circle of two strippers is positioned on same plumb line，First、On two strippers, the circumference place of same radius size offers first respectively、Two discharge ports，The lower face of the first stripper is arranged to by first、It is step-like that two step surface combinations are constituted，The upper face of second step face and the second stripper fits，Cavity is formed between First terrace and the second stripper upper face，First discharge port is opened on First terrace，First、The step place that two step surfaces are joined is provided with sealing member，The shape of sealing member and first、The step shape of two step surface junctions is consistent，Second stripper and the second driving mechanism are connected.
In technique scheme, in first and second leaching device, mapping mountain red autumnal leaves/flower extracts respectively, owing in the extracting solution that Rhododendron simsii Planch. leaf/flower obtains when second time is extracted, pigment/flavone concentration is relatively low, therefore the extractant filtrate after isolated by filtration extracted as first time, thus improving the concentration of pigment/flavone in extracting solution, it is simple to follow-up distillation and concentration processes, adopt two-stage to extract simultaneously, can effectively shorten extracting cycle, save the energy and improve the throughput rate of pigment/flavone.Additionally, extraction element is moved by the first driving mechanism adjusting slider, make the vacancy portion on slide block corresponding with the charge door on slide rail and different, thus realizing the Guan Bi of the rapid loading to extraction pot and charge door, simultaneously when extracting, operator, charging device can be passed through in hopper, add the inventory that next batch needs to add, so there is no need to extraction pot complete extract operation after again weighing add, thus saving the time, improve extraction efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of first and second extraction element；
Fig. 3 is the A place enlarged diagram of Fig. 2；
Fig. 4 is the assembling schematic diagram of slide rail, slide block, hopper；
Fig. 5 is the upward view of the first stripper.
Detailed description of the invention
In order to make objects and advantages of the present invention clearly understand, below in conjunction with embodiment, the present invention is specifically described.Should be appreciated that following word is only in order to describe one or more specific embodiments of the present invention, the protection domain present invention specifically not asked carries out considered critical.
The technical scheme that the present invention takes is as shown in Figure 1, including first and second leaching device A1, A2 successively Rhododendron simsii Planch. extracted and first and second defecator A3, A4 that respectively material in first and second leaching device A1, A2 after extracting is carried out solid-liquid separation, the liquid outlet of the first defecator A3 is connected with extracting solution storage tank A5, and the liquid outlet of the second defecator A4 and the extractant import of the first leaching device A1 are connected.In technique scheme, in first and second leaching device, mapping mountain red autumnal leaves/flower extracts respectively, owing in the extracting solution that Rhododendron simsii Planch. leaf/flower obtains when second time is extracted, pigment/flavone concentration is relatively low, therefore the extractant filtrate after isolated by filtration extracted as first time, thus improving the concentration of pigment/flavone in extracting solution, it is simple to follow-up distillation and concentration processes, adopt two-stage to extract simultaneously, can effectively shorten extracting cycle, save the energy and improve the throughput rate of pigment/flavone.Defecator can adopt general equipment for separating liquid from solid, and the solid material between neighboring devices adopts tape transport, and liquid material adopts pipeline and delivery pump conveying.
nullFirst、Two extraction element A1、A2 includes extraction pot 10 and horizontally disposed shaft 151，It is respectively arranged with mounting seat in the middle part of the lateral wall, both sides that extraction pot 10 is relative，Shaft 151 two ends are rotatably installed in mounting seat，Shaft 151 is connected with the 3rd driving mechanism Q3，Shaft 151 is positioned on the axle body of extraction pot 10 and is provided with rabbling mechanism，The first adjusting part that the top of extraction pot 10 is provided with dog-house and the closure state to dog-house is adjusted，The second adjusting part that the bottom of extraction pot 10 is provided with discharge port and the closure state to discharge port is adjusted，First、The horizontally disposed flashboard that two adjusting parts can be extraction pot 10 top or bottom setting is constituted，Flashboard can manually regulate，Flashboard can also be connected with the piston rod driving its feed screw nut's adjusting part moved in the horizontal direction or cylinder，Utilize electric or pneumatic adjustment.It should be noted that; in the present invention, for the ease of briefly, clearly the scope that the present invention is claimed being described, therefore; not being sealed into line description to what there is extractant leakage place on extraction pot 10, this is also the known general knowledge that is appreciated by of those of ordinary skill in the art and routine operation means certainly.
In the present invention, preferably employ following scheme, such as Fig. 2, shown in 4, first adjusting part includes the slide rail 12 that the grooved part of opening upwards is constituted, the vacancy portion that grooved part bottom land is offered constitutes dog-house, slide rail 12 is arranged in the horizontal direction, slide rail 12 is provided with slide block 13, slide block 13 and slide rail 12 constitute slide-and-guide along the length direction of slide rail 12 and are connected cooperation, the bottom land of the bottom surface of slide block 13 and grooved part fits, slide block 13 is provided with the hopper 14 that vertical shape is arranged, slide block 13 with expect bottom hopper 14 that opening shape is offered in the junction of mouth, slide block 13 is connected with the first driving mechanism Q1.Moved by the first driving mechanism adjusting slider 13, make the vacancy portion on slide block 13 corresponding with the charge door on slide rail 12 and different, thus realizing the Guan Bi of the rapid loading to extraction pot 10 and charge door, simultaneously when extracting, operator, it is possible to by charging device to adding the inventory that next batch needs to add in hopper 14, so there is no need to after extraction pot 10 completes to extract operation weighing again and add, thus saving the time, improve raw material extraction efficiency.
nullPreferably according to such as Fig. 2、Shown in 3, scheme is carried out，Second adjusting part includes in extraction pot 10 discharge port place、Under circular first that be arranged in parallel、Two strippers 16、17，First stripper 16 is fixed with one with extraction pot 10，The side of the second stripper 17 offers cannelure，Second stripper 17 is rotatably assorted around vertical composition by the steel ball assembly 18 that arranges in cannelure and extraction pot 10 and is connected，First、Two strippers 16、The center of circle of 17 is positioned on same plumb line，First、On two strippers, the circumference place of same radius size offers first respectively、Two discharge port 16a、17a，The lower face of the first stripper 16 is arranged to by first、Two step surfaces 161、It is step-like that 162 combinations are constituted，The upper face of second step face 162 and the second stripper 17 fits，Cavity is formed between First terrace 161 and the second stripper 17 upper face，First discharge port 16a is opened on First terrace 161，First、The step place that two step surfaces are joined is provided with sealing member 163，The shape of sealing member 163 and first、The step shape of two step surface junctions is consistent，Second stripper 17 is connected with the second driving mechanism Q2，Preferred scheme as shown in Figure 5，First、The outline of two step surface junctions is arc，So sealing member is set to arc，Sealing member can adopt O-ring seals.Regulate the second stripper 17 by the second driving mechanism Q2 to rotate, make first and second discharge port on first and second stripper corresponding and different, thus realizing the Guan Bi of the quickly discharging material to extraction pot 10 and discharge port, it is achieved quickly discharging material, thus saving the time, improve extraction efficiency.
In the present invention, first, second and third driving mechanism can adopt electronic composition, certain first driving mechanism that cylinder also can be adopted to constitute, and the 3rd driving mechanism may be used without arranging operating handle and carries out manual adjustments, and extraction pot 10 profile is cydariform or elliposoidal.
Further scheme is: is provided with ultrasound emission assembly or Microwave emission assembly, ultrasound emission assembly or Microwave emission assembly in extraction pot 10 and can improve extraction efficiency and the extraction ratio of plant actives, shortens the cycle and improves the utilization rate of raw material.Extraction pot 10 is arranged in frame 11, frame 11 includes the spike 11 that four vertical shapes are arranged, the bottom propping up spike 11 is provided with gravity sensor 111, gravity sensor 111 can be measured the weight of whole extraction equipment in real time and be shown by display, such operator just can accurately learn the feeding quantity of each material in real time, thus realizing feeding intake according to best material ratio.Rabbling mechanism includes the spaced puddler 152 of zigzag shape on shaft 151 axle body, paddle 153 is arranged on the end of puddler 152, between puddler 152 and paddle 153 for be articulated and connected and constitute the jointed shaft that is articulated and connected axially and the axial angle of shaft 151 be 30～60 °, paddle 153 is gradually increased along the plate face width degree pointed near puddler 152 one end away from puddler 152 one end, such rabbling mechanism can so that the stirring of material be more abundant, rabbling mechanism well can be protected simultaneously, prevent solid material from when tangling, causing rabbling mechanism torsional deformation, paddle 153 rotational angle on puddler 152 is not easily excessive, the general angle rotated is 1～2 °.Extraction pot 10 internal face is provided with the flow-interfering bar of zigzag shape, arranging also for the adequacy realizing material stirring of flow-interfering bar.
Detailed scheme is: slide block 13 is that a strip plate is constituted, the two ends of slide block 13 are respectively arranged with hopper 14, the outside of two hoppers 14 is respectively provided with material and adds mechanism, realize adding of various materials, the sidewall of extraction pot 10 is sandwich, the folder chamber that sandwich is formed is used for holding hot fluid, the material in extraction pot 10 is incubated or heats.
In a word, two grades of extraction equipments provided by the invention, can effectively realize quickly adding and unloading of material, it is achieved the high concentration rapid extraction of Rhododendron simsii Planch. pigment/flavone, improve the extraction efficiency of Rhododendron simsii Planch. pigment/flavone.
The above is only the preferred embodiment of the present invention; should be understood that; for those skilled in the art; in knowing the present invention after contents; under the premise without departing from the principles of the invention; it can also being made some equal conversion and replacement, these convert on an equal basis and substitute and also should be regarded as belonging to protection scope of the present invention.
Claims (2)
- null1. one kind is applied to two grades of extraction equipments that Rhododendron simsii Planch. active component is extracted，It is characterized in that: include successively Rhododendron simsii Planch. is extracted first、Two leaching devices and respectively to extract after first、Material in two leaching devices carries out the first of solid-liquid separation、Two defecators，The liquid outlet of the first defecator is connected with extracting solution storage tank，The liquid outlet of the second defecator and the extractant import of the first leaching device are connected，First、Two leaching devices include extraction pot and horizontally disposed shaft，It is respectively arranged with mounting seat in the middle part of the lateral wall, both sides that extraction pot is relative，Shaft two ends are rotatably installed in mounting seat，Shaft and the 3rd driving mechanism are connected，Shaft is positioned on the axle body of extraction pot and is provided with rabbling mechanism，The first adjusting part that the top of extraction pot is provided with dog-house and the closure state to dog-house is adjusted，The second adjusting part that the bottom of extraction pot is provided with discharge port and the closure state to discharge port is adjusted，First adjusting part includes the slide rail that the grooved part of opening upwards is constituted，The vacancy portion that grooved part bottom land is offered constitutes dog-house，Slide rail is arranged in the horizontal direction，Slide rail is provided with slide block，Slide block and slide rail constitute slide-and-guide along the length direction of slide rail and are connected cooperation，The bottom land of the bottom surface of slide block and grooved part fits，Slide block is provided with the hopper that vertical shape is arranged，Slide block offers into opening shape with the junction of feed hopper bottom material mouth，Slide block and the first driving mechanism are connected；nullSecond adjusting part includes in extraction pot discharge port place、Under circular first that be arranged in parallel、Two strippers，First stripper and extraction pot are fixed with one，The side of the second stripper offers cannelure，Second stripper is rotatably assorted around vertical composition by the steel ball assembly that arranges in cannelure and extraction pot and is connected，First、The center of circle of two strippers is positioned on same plumb line，First、On two strippers, the circumference place of same radius size offers first respectively、Two discharge ports，The lower face of the first stripper is arranged to by first、It is step-like that two step surface combinations are constituted，The upper face of second step face and the second stripper fits，Cavity is formed between First terrace and the second stripper upper face，First discharge port is opened on First terrace，First、The step place that two step surfaces are joined is provided with sealing member，The shape of sealing member and first、The step shape of two step surface junctions is consistent，Second stripper and the second driving mechanism are connected.
- 2. the two grades of extraction equipments being applied to the extraction of Rhododendron simsii Planch. active component according to claim 1, it is characterized in that: rabbling mechanism includes the spaced puddler of zigzag shape on shaft axle body, paddle is arranged on the end of puddler, between puddler and paddle, the angle for being articulated and connected and constitute the jointed shaft that is articulated and connected axially axial with shaft is 30～60 °, and paddle is gradually increased along the plate face width degree pointing to close puddler one end away from puddler one end；Extraction pot internal face is provided with the flow-interfering bar of zigzag shape；The sidewall of extraction pot is sandwich.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2014204486508 | 2014-08-10 | ||
| CN201420448650 | 2014-08-10 | ||
| CN201510428917.6A CN104922930B (en) | 2014-08-10 | 2015-07-18 | Two grades of extraction equipments of Rhododendron simsii Planch. |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510428917.6A Division CN104922930B (en) | 2014-08-10 | 2015-07-18 | Two grades of extraction equipments of Rhododendron simsii Planch. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105771312A true CN105771312A (en) | 2016-07-20 |
| CN105771312B CN105771312B (en) | 2018-09-21 |
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Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510428917.6A Expired - Fee Related CN104922930B (en) | 2014-08-10 | 2015-07-18 | Two grades of extraction equipments of Rhododendron simsii Planch. |
| CN201610304168.0A Active CN105749580B (en) | 2014-08-10 | 2015-07-18 | Two level extraction equipment applied to the extraction of azalea active component |
| CN201610303869.2A Active CN105771312B (en) | 2014-08-10 | 2015-07-18 | Two level extraction equipment applied to the extraction of azalea active component |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510428917.6A Expired - Fee Related CN104922930B (en) | 2014-08-10 | 2015-07-18 | Two grades of extraction equipments of Rhododendron simsii Planch. |
| CN201610304168.0A Active CN105749580B (en) | 2014-08-10 | 2015-07-18 | Two level extraction equipment applied to the extraction of azalea active component |
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| Country | Link |
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| CN (3) | CN104922930B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105749580A (en) * | 2014-08-10 | 2016-07-13 | 王选明 | Two-stage digestion equipment applied to extraction of rhododendron simsii active components |
| CN110152346A (en) * | 2018-04-09 | 2019-08-23 | 嘉兴市寒疆芳草生物科技有限公司 | It is a kind of to resist antibacterial chamomile hydrosol extracting method |
| CN114233250A (en) * | 2021-12-15 | 2022-03-25 | 中国石油大学(北京) | Installation device and installation method of deepwater combined casing |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106362434A (en) * | 2016-10-10 | 2017-02-01 | 王芹 | Multistage extraction unit for animal and plant raw materials, and method and application thereof |
| CN106422408A (en) * | 2016-10-10 | 2017-02-22 | 王芹 | Multistage separation device for animal and plant raw materials as well as method and application thereof |
| CN113318476A (en) * | 2021-07-08 | 2021-08-31 | 成都永康制药有限公司 | Rhododendron dauricum gradient extraction device and method |
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| CN2793084Y (en) * | 2005-05-25 | 2006-07-05 | 北京中棉紫光生物科技有限公司 | Full course solid-liquid extractor with pulling chains and fixed grid bottom |
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| FR2005399A1 (en) * | 1968-04-02 | 1969-12-12 | Kureha Chemical Ind Co Ltd | |
| US3860395A (en) * | 1971-12-03 | 1975-01-14 | Extraktionstechnik Gmbh | Rotary extractor |
| HU212591B (en) * | 1991-09-02 | 1996-08-29 | Richter Gedeon Vegyeszet | Process and equipment for extraction of solid granular and/or cracked materials with liquid and for pretreatment of further extraction |
| US5399370A (en) * | 1993-05-07 | 1995-03-21 | Nestec S.A. | Method and apparatus for treating ground roasted coffee |
| JPH10251013A (en) * | 1997-03-12 | 1998-09-22 | Shinko Yamaguchi | All technology to refine and effectively utilize strongly alkaline aqueous solution by treating ashe of grass and tree |
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2015
- 2015-07-18 CN CN201510428917.6A patent/CN104922930B/en not_active Expired - Fee Related
- 2015-07-18 CN CN201610304168.0A patent/CN105749580B/en active Active
- 2015-07-18 CN CN201610303869.2A patent/CN105771312B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2793084Y (en) * | 2005-05-25 | 2006-07-05 | 北京中棉紫光生物科技有限公司 | Full course solid-liquid extractor with pulling chains and fixed grid bottom |
| CN2880211Y (en) * | 2006-02-08 | 2007-03-21 | 贺小群 | Full-auto microwave extracting device |
| CN105749580A (en) * | 2014-08-10 | 2016-07-13 | 王选明 | Two-stage digestion equipment applied to extraction of rhododendron simsii active components |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105749580A (en) * | 2014-08-10 | 2016-07-13 | 王选明 | Two-stage digestion equipment applied to extraction of rhododendron simsii active components |
| CN110152346A (en) * | 2018-04-09 | 2019-08-23 | 嘉兴市寒疆芳草生物科技有限公司 | It is a kind of to resist antibacterial chamomile hydrosol extracting method |
| CN114233250A (en) * | 2021-12-15 | 2022-03-25 | 中国石油大学(北京) | Installation device and installation method of deepwater combined casing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104922930B (en) | 2016-11-30 |
| CN105749580B (en) | 2018-09-21 |
| CN104922930A (en) | 2015-09-23 |
| CN105771312B (en) | 2018-09-21 |
| CN105749580A (en) | 2016-07-13 |
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