CN108266969A - A kind of method of radix scutellariae gas jet impact and vacuum impulse microwave combining drying - Google Patents
A kind of method of radix scutellariae gas jet impact and vacuum impulse microwave combining drying Download PDFInfo
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- CN108266969A CN108266969A CN201810345703.6A CN201810345703A CN108266969A CN 108266969 A CN108266969 A CN 108266969A CN 201810345703 A CN201810345703 A CN 201810345703A CN 108266969 A CN108266969 A CN 108266969A
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- radix scutellariae
- drying
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- jet impact
- vacuum
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/10—Temperature; Pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/12—Velocity of flow; Quantity of flow, e.g. by varying fan speed, by modifying cross flow area
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/32—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action
- F26B3/34—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects
- F26B3/347—Electromagnetic heating, e.g. induction heating or heating using microwave energy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
- F26B5/048—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum in combination with heat developed by electro-magnetic means, e.g. microwave energy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
Abstract
The present invention relates to a kind of methods of radix scutellariae gas jet impact and vacuum impulse microwave combining drying, belong to technical field of agricultural product process.The processing method includes following operating procedure：The selecting, clean with water, being sliced of radix scutellariae, gas jet impact are dry, vacuum impulse microwave drying and vacuum pack with nitrogen.The present invention has the following advantages：(1) method of gas jet impact and vacuum impulse microwave combining drying, significantly shortens the production cycle, the primary drying period is in 3~4 hours；(2) vacuum impulse method for microwave drying, accelerate the speed of radix scutellariae internal moisture and heat to surface migration, the technology accelerates rate of drying, improve drying uniformity, drying temperature is reduced again, have the advantages that heat-sensitive ingredients loss is small, low energy consumption, so as to significantly improve the drying quality of radix scutellariae；(3) vacuum impulse microwave drying can sterilize ovicidal, and storage can be directly packed after radix scutellariae is drying.
Description
Technical field
The present invention relates to a kind of methods of radix scutellariae gas jet impact and vacuum impulse microwave combining drying, belong to agricultural product
Processing technique field.
Background technology
Radix scutellariae is lamiaceae labiatae scutellaria herbaceos perennial radix scutellariae (Scutellaria baicalensis Georgi)
Dry root, first recorded in《Sheng Nong's herbal classic》, it is radix scutellariae bitter, cold in nature, have clearing heat and detoxicating, decompression cholagogic diuresis, calmness, it is antibacterial,
The effects that anti-inflammatory, hemostasis, and with stronger anti-oxidant, antitumor response and other effects (quiet radix scutellariae Advance on Pharmacological Activities of history snow
[J] traditional Chinese medicine information, 2010,27 (4)：128-130).
Drying after radix scutellariae is received is the necessary process of its Habitat producing and the crucial ring for influencing radix scutellariae medicinal materials quality
Section.The traditional drying mode of radix scutellariae be directly dry, dry in the shade, baking oven forced air drying etc., production efficiency is relatively low, easily causes radix scutellariae production
(Cui Li, Song Xiangyun, Du Liping wait radix scutellariae infra-red drying characteristics and kinetic simulation to the problems such as product appearance is poor, streaking is even
Type research [J] Jiangsu's agriculture science, 2017,45 (20)：216-221).
Chinese invention patent (CN 102429213A) discloses a kind of negative-pressure microwave that crisp mushroom chips are made of dried thin mushroom and joins
Close drying means, the spouted drying of pretreatment, negative-pressure microwave including dried thin mushroom, vacuum microwave drying, packaging.This method belongs to fruit
Vegetable manufacture field, moisture and temperature are difficult to the Chinese medicine root spread when not being suitable for hard quality, drying, there is certain limitation
Property.
Invention content
The purpose of the present invention is to provide a kind of method of radix scutellariae gas jet impact and vacuum impulse microwave combining drying,
To solve, the drying time faced in China's tradition radix scutellariae drying is long, efficiency is low, sanitary condition is poor, drying quality is poor and uneven
Even problem.
To achieve these goals, the present invention provides following technical solutions：
A kind of method of radix scutellariae gas jet impact and vacuum impulse microwave combining drying, which is characterized in that including as follows
Operating procedure：
(1) no qualitative change, fresh radix scutellariae are selected；
(2) it is with clear water and brush that radix scutellariae surface clean is clean, remove the impurity such as soil and dirt；
(3) radix scutellariae after cleaning with water totally is transversely cut into the thin slice that thickness is 2~4mm by slicer；
(4) it is the radix scutellariae individual layer cut is evenly laid out on pallet, gas jet impact drying is carried out, wherein, dry temperature
It is 60~70 DEG C to spend, and wind speed is 10~25m/s, stops gas jet punching when the wet basis moisture content of radix scutellariae is reduced to 30~40%
Hit drying；
(5) the dried radix scutellariae of gas jet impact is subjected to vacuum impulse microwave drying, wherein, microwave power 300
~400W, hothouse vacuum degree is between 0 and 0.088~0.096MPa with 2~4 minutes：The pulsation of 4~7 minutes is than carrying out arteries and veins
It is dynamic, stop vacuum impulse microwave drying when the wet basis moisture content of radix scutellariae is reduced to 9~11%；
(6) dried radix scutellariae is subjected to vacuum pack with nitrogen.
Drying temperature is 62~66 DEG C in the step (4), and wind speed is 15~20m/s, when the wet basis moisture content of radix scutellariae drops
It is dried down to gas jet impact is stopped when 30~40%.
Microwave power is 320~380W in the step (5), and hothouse vacuum degree is between 0 and 0.092~0.096MPa
With 2~4 minutes：The pulsation ratio of 4~7 minutes is pulsed, and stops vacuum when the wet basis moisture content of radix scutellariae is reduced to 9~11%
Pulse microwave is dried.
Drying temperature is 65 DEG C, wind speed 18m/s in the step (4), when the wet basis moisture content of radix scutellariae is reduced to 35%
When stop gas jet impact drying.
Microwave power is 340W in the step (5), and hothouse vacuum degree is between 0 and 0.092MPa with 3 minutes：5 points
The pulsation ratio of clock is pulsed, and stops vacuum impulse microwave drying when the wet basis moisture content of radix scutellariae is reduced to 9~11%.
The radix scutellariae is the radix scutellariae of 2~triennial.
The present invention organically combines gas jet impact drying and vacuum impulse microwave drying, has given full play to gas jet
Impact and the respective advantage of vacuum impulse microwave drying, by the way of early period is dried using gas jet impact, gas jet impact is done
It is dry to refer to gas being ejected into the method that material to be dried surface is thermally dried by the nozzle of definite shape, due to nozzle
The gas velocity of ejection is high, fluid flow is short, and very thin boundary layer is generated between air-flow and surface of material, therefore system of conducting heat
Number is very high, and gas jet impact drying has certain emollescence for the harder radix scutellariae of quality；Later stage is micro- using vacuum impulse
The mode of wave drying, processing object is placed in closed hothouse, while certain power microwave is provided with so that dry
Indoor vacuum degree reaches analog value and is kept for a period of time, and hothouse is then made to be restored to normal pressure state and keeps a timing
Between, such alternate cycles make processing object be constantly under the alternating capacity of vacuum and normal pressure, until drying process is completed.It adopts
Low power microwave can reduce the loss of the active ingredients such as baicalin in Scutellaria baicalensis Georgi caused by heating is too fast, temperature is excessively high,
The uneven drying phenomenon of not yet dry abundant but external coking inside radix scutellariae stripping and slicing is avoided simultaneously；Due to vacuum and often
The pulsating cyclic variation of pressure enables to the microcosmic duct of material to be constantly extruded and expand, this process can be by some not phases
Even microporous connectivity, formed micropore between channel, significantly improve water translocation rate, particularly accelerate internal batch temperature to
The rate of external diffusion avoids hot-spot and influences drying uniformity, improves drying efficiency, the quality that ensure that radix scutellariae.This
Invention has important application prospect and popularizing value.
Compared with prior art, beneficial effects of the present invention are：
(1) present invention for radix scutellariae quality it is hard, easily mouldy, dry when moisture and temperature spread slow, inside and outside uneven drying
The characteristics of even, use elder generation with gas jet impact it is dry, after with the combined drying method of vacuum impulse microwave drying, ensure it is yellow
Under the premise of a kind of reed mentioned in ancient books quality, the production cycle is significantly shortened, the primary drying period is in 3~4 hours；(2) it is dried according to radix scutellariae
The vacuum impulse method for microwave drying that characteristic uses, is at vacuum and the alternate pulsation recurrent state of normal pressure, so as to accelerate
To the speed of surface migration, which accelerates rate of drying, improves drying uniformity, again for radix scutellariae internal moisture and heat
Drying temperature is reduced, has the advantages that heat-sensitive ingredients loss is small, low energy consumption, so as to significantly improve the dry product of radix scutellariae
Matter；(3) vacuum impulse microwave drying can sterilize ovicidal, and storage can be directly packed after radix scutellariae is drying.
Specific embodiment
A kind of method of radix scutellariae gas jet impact and vacuum impulse microwave combining drying, including following operating procedure：
(1) no qualitative change, fresh radix scutellariae are selected；
(2) it is with clear water and brush that radix scutellariae surface clean is clean, remove the impurity such as soil and dirt；
(3) radix scutellariae after cleaning with water totally is transversely cut into the thin slice that thickness is 2~4mm by slicer；
(4) it is the radix scutellariae individual layer cut is evenly laid out on pallet, gas jet impact drying is carried out, wherein, dry temperature
It is 60~70 DEG C to spend, and wind speed is 10~25m/s, stops gas jet punching when the wet basis moisture content of radix scutellariae is reduced to 30~40%
Hit drying；
(5) the dried radix scutellariae of gas jet impact is subjected to vacuum impulse microwave drying, wherein, microwave power 300
~400W, hothouse vacuum degree is between 0 and 0.088~0.096MPa with 2~4 minutes：The pulsation of 4~7 minutes is than carrying out arteries and veins
It is dynamic, stop vacuum impulse microwave drying when the wet basis moisture content of radix scutellariae is reduced to 9~11%；
(6) dried radix scutellariae is subjected to vacuum pack with nitrogen.
With reference to specific embodiment, the present invention will be further described, and following embodiment is only to the present invention will be described in detail
A kind of method of radix scutellariae gas jet impact and vacuum impulse microwave combining drying is not intended to limit the present invention.
Embodiment 1
A kind of method of radix scutellariae gas jet impact and vacuum impulse microwave combining drying, including following operating procedure：
(1) no qualitative change, fresh radix scutellariae are selected；
(2) it is with clear water and brush that radix scutellariae surface clean is clean, remove the impurity such as soil and dirt；
(3) radix scutellariae after cleaning with water totally is transversely cut into the thin slice that thickness is 2mm by slicer；
(4) it is the radix scutellariae individual layer cut is evenly laid out on pallet, gas jet impact drying is carried out, wherein, dry temperature
It is 60 DEG C, wind speed 10m/s to spend, and stops gas jet impact drying when the wet basis moisture content of radix scutellariae is reduced to 30%；
(5) the dried radix scutellariae of gas jet impact is subjected to vacuum impulse microwave drying, wherein, microwave power is
300W, hothouse vacuum degree is between 0 and 0.096MPa with 2 minutes：The pulsation ratio of 4 minutes is pulsed, when the wet basis of radix scutellariae
Moisture content stops vacuum impulse microwave drying when being reduced to 9%；
(6) dried radix scutellariae is subjected to vacuum pack with nitrogen.
Embodiment 2
A kind of method of radix scutellariae gas jet impact and vacuum impulse microwave combining drying, including following operating procedure：
(1) no qualitative change, fresh radix scutellariae are selected；
(2) it is with clear water and brush that radix scutellariae surface clean is clean, remove the impurity such as soil and dirt；
(3) radix scutellariae after cleaning with water totally is transversely cut into the thin slice that thickness is 4mm by slicer；
(4) it is the radix scutellariae individual layer cut is evenly laid out on pallet, gas jet impact drying is carried out, wherein, dry temperature
It is 70 DEG C, wind speed 25m/s to spend, and stops gas jet impact drying when the wet basis moisture content of radix scutellariae is reduced to 40%；
(5) the dried radix scutellariae of gas jet impact is subjected to vacuum impulse microwave drying, wherein, microwave power is
400W, hothouse vacuum degree is between 0 and 0.088MPa with 4 minutes：The pulsation ratio of 7 minutes is pulsed, when the wet basis of radix scutellariae
Moisture content stops vacuum impulse microwave drying when being reduced to 11%；
(6) dried radix scutellariae is subjected to vacuum pack with nitrogen.
Embodiment 3
A kind of method of radix scutellariae gas jet impact and vacuum impulse microwave combining drying, including following operating procedure：
(1) no qualitative change, fresh radix scutellariae are selected；
(2) it is with clear water and brush that radix scutellariae surface clean is clean, remove the impurity such as soil and dirt；
(3) radix scutellariae after cleaning with water totally is transversely cut into the thin slice that thickness is 3mm by slicer；
(4) it is the radix scutellariae individual layer cut is evenly laid out on pallet, gas jet impact drying is carried out, wherein, dry temperature
It is 65 DEG C, wind speed 18m/s to spend, and stops gas jet impact drying when the wet basis moisture content of radix scutellariae is reduced to 35%；
(5) the dried radix scutellariae of gas jet impact is subjected to vacuum impulse microwave drying, wherein, microwave power is
340W, hothouse vacuum degree is between 0 and 0.092MPa with 3 minutes：The pulsation ratio of 5 minutes is pulsed, when the wet basis of radix scutellariae
Moisture content stops vacuum impulse microwave drying when being reduced to 10%；
(6) dried radix scutellariae is subjected to vacuum pack with nitrogen.
Embodiment 4
A kind of method of radix scutellariae gas jet impact and vacuum impulse microwave combining drying, including following operating procedure：
(1) no qualitative change, fresh radix scutellariae are selected；
(2) it is with clear water and brush that radix scutellariae surface clean is clean, remove the impurity such as soil and dirt；
(3) radix scutellariae after cleaning with water totally is transversely cut into the thin slice that thickness is 2.5mm by slicer；
(4) it is the radix scutellariae individual layer cut is evenly laid out on pallet, gas jet impact drying is carried out, wherein, dry temperature
It is 68 DEG C, wind speed 20m/s to spend, and stops gas jet impact drying when the wet basis moisture content of radix scutellariae is reduced to 36%；
(5) the dried radix scutellariae of gas jet impact is subjected to vacuum impulse microwave drying, wherein, microwave power is
320W, hothouse vacuum degree is between 0 and 0.086MPa with 2 minutes：The pulsation ratio of 6 minutes is pulsed, when the wet basis of radix scutellariae
Moisture content stops vacuum impulse microwave drying when being reduced to 9%；
(6) dried radix scutellariae is subjected to vacuum pack with nitrogen.
Embodiment 5
A kind of method of radix scutellariae gas jet impact and vacuum impulse microwave combining drying, including following operating procedure：
(1) no qualitative change, fresh radix scutellariae are selected；
(2) it is with clear water and brush that radix scutellariae surface clean is clean, remove the impurity such as soil and dirt；
(3) radix scutellariae after cleaning with water totally is transversely cut into the thin slice that thickness is 3.5mm by slicer；
(4) it is the radix scutellariae individual layer cut is evenly laid out on pallet, gas jet impact drying is carried out, wherein, dry temperature
It is 63 DEG C, wind speed 15m/s to spend, and stops gas jet impact drying when the wet basis moisture content of radix scutellariae is reduced to 32%；
(5) the dried radix scutellariae of gas jet impact is subjected to vacuum impulse microwave drying, wherein, microwave power is
380W, hothouse vacuum degree is between 0 and 0.090MPa with 3 minutes：The pulsation ratio of 7 minutes is pulsed, when the wet basis of radix scutellariae
Moisture content stops vacuum impulse microwave drying when being reduced to 11%；
(6) dried radix scutellariae is subjected to vacuum pack with nitrogen.
The result shows that：It uses the time required to the method for the present invention as 3~4 hours, rate of drying is fast, is done inside and outside radix scutellariae slice
Dry good evenness, working efficiency are high, sanitary condition is good, storage time is longer after drying.
Claims (6)
1. a kind of method of radix scutellariae gas jet impact and vacuum impulse microwave combining drying, which is characterized in that including grasping as follows
Make step：
(1) no qualitative change, fresh radix scutellariae are selected；
(2) it is with clear water and brush that radix scutellariae surface clean is clean, remove the impurity such as soil and dirt；
(3) radix scutellariae after cleaning with water totally is transversely cut into the thin slice that thickness is 2~4mm by slicer；
(4) it is the radix scutellariae individual layer cut is evenly laid out on pallet, gas jet impact drying is carried out, wherein, drying temperature is
60~70 DEG C, wind speed is 10~25m/s, and stopping gas jet impact when the wet basis moisture content of radix scutellariae is reduced to 30~40% does
It is dry；
(5) the dried radix scutellariae of gas jet impact is subjected to vacuum impulse microwave drying, wherein, microwave power for 300~
400W, hothouse vacuum degree were pulsed between 0 and 0.088~0.096MPa with the pulsation ratio of 2~4 minutes: 4~7 minutes,
Stop vacuum impulse microwave drying when the wet basis moisture content of radix scutellariae is reduced to 9~11%；
(6) dried radix scutellariae is subjected to vacuum pack with nitrogen.
2. a kind of method of radix scutellariae gas jet impact and vacuum impulse microwave combining drying according to claim 1, special
Sign is that drying temperature is 62~66 DEG C in the step (4), and wind speed is 15~20m/s, when the wet basis moisture content of radix scutellariae reduces
It is dried to gas jet impact is stopped when 30~40%.
3. a kind of method of radix scutellariae gas jet impact and vacuum impulse microwave combining drying according to claim 1, special
Sign is that microwave power is 320~380W in the step (5), and hothouse vacuum degree is between 0 and 0.092~0.096MPa
It is pulsed with the pulsation ratio of 2~4 minutes: 4~7 minutes, stops vacuum when the wet basis moisture content of radix scutellariae is reduced to 9~11%
Pulse microwave is dried.
4. the method for a kind of radix scutellariae gas jet impact according to claim 1 or claim 2 and vacuum impulse microwave combining drying,
It is characterized in that, drying temperature is 65 DEG C, wind speed 18m/s in the step (4), when the wet basis moisture content of radix scutellariae is reduced to 35%
When stop gas jet impact drying.
5. according to the method for a kind of radix scutellariae gas jet impact of claim 1 or 3 and vacuum impulse microwave combining drying,
It is characterized in that, microwave power is 340W in the step (5), and hothouse vacuum degree is between 0 and 0.092MPa with 3 minutes: 5 points
The pulsation ratio of clock is pulsed, and stops vacuum impulse microwave drying when the wet basis moisture content of radix scutellariae is reduced to 9~11%.
6. a kind of method of radix scutellariae gas jet impact and vacuum impulse microwave combining drying according to claim 1, special
Sign is that the radix scutellariae is the radix scutellariae of 2~triennial.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810345703.6A CN108266969B (en) | 2018-04-18 | 2018-04-18 | Method for drying scutellaria baicalensis by combining gas jet impact and vacuum pulsation microwaves |
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| CN201810345703.6A CN108266969B (en) | 2018-04-18 | 2018-04-18 | Method for drying scutellaria baicalensis by combining gas jet impact and vacuum pulsation microwaves |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111937953A (en) * | 2020-07-19 | 2020-11-17 | 北京工商大学 | Combined drying method of mulberries |
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