CN106288665A - A kind of vacuum drying process - Google Patents
A kind of vacuum drying process Download PDFInfo
- Publication number
- CN106288665A CN106288665A CN201610692142.8A CN201610692142A CN106288665A CN 106288665 A CN106288665 A CN 106288665A CN 201610692142 A CN201610692142 A CN 201610692142A CN 106288665 A CN106288665 A CN 106288665A
- Authority
- CN
- China
- Prior art keywords
- vacuum
- period
- temperature
- vacuum drying
- warmup period
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The present invention relates to technical field of drying, specifically disclose a kind of vacuum drying process, in vacuum drying period, dry bin at least discharges a vacuum.The present invention is in carrying out process of vacuum drying, and when being in vacuum drying, under the effect of negative pressure, the moisture content of product surface is evaporated to dryness, and product mutually adsorbs laminating；When the vacuum is released, product is mutually under normal pressure, and the moisture content of interiors of products disperses outside product, when vacuum again, can further be evaporated by product is outside and surface moisture content further again；To sum up, use intermittent vacuum to be dried, the dry mass of product can be greatly improved, save the time being dried, improve efficiency.
Description
Technical field
The present invention relates to technical field of drying, particularly relate to a kind of vacuum drying process.
Background technology
At present, prior art has had multiple vacuum dryer, in vacuum dryer, in order to make device interior protect
Hold vacuum state, all have employed preferable sealing means, it is ensured that after fully sealing, drier chamber is carried out evacuation, take seriously
When sky reaches predetermined value, formal startup is dried, and the inventors discovered that, the drying efficiency of existing this vacuum drying method and matter
Measure the highest.Particularly in battery manufacturing field, this situation is particularly evident.In view of this, inventor has made improvement.
Summary of the invention
Present invention aims to the deficiencies in the prior art, it is provided that a kind of vacuum drying process, this drying process has
It is improved drying efficiency and the advantage improving dry mass.
For achieving the above object, a kind of vacuum drying process of the present invention, in vacuum drying period, dry bin is at least
Discharge a vacuum.
Further, when discharging vacuum, it is passed through dry gas to being dried bin.
Further, the temperature of described dry gas is more than or equal to the temperature being dried bin.
Further, described vacuum drying period operation includes that vacuum, for the first time release for the first time, second time are true successively
Empty, second time discharges and third time vacuum.
Preferably, vacuum drying period be provided with the first warmup period, the second warmup period, the 3rd warmup period and
4th warmup period.
Preferred version, the temperature of described first warmup period is 58 DEG C, and the temperature of the second warmup period is 63 DEG C, Acanthopanan trifoliatus (L.) Merr.
The temperature of temperature period is 68 DEG C, and the temperature of the 4th warmup period is 73 DEG C.
Preferred version, the temperature of described first warmup period is 60 DEG C, and the temperature of the second warmup period is 65 DEG C, Acanthopanan trifoliatus (L.) Merr.
The temperature of temperature period is 70 DEG C, and the temperature of the 4th warmup period is 75 DEG C.
Preferred version, the temperature of described first warmup period is 62 DEG C, and the temperature of the second warmup period is 67 DEG C, Acanthopanan trifoliatus (L.) Merr.
The temperature of temperature period is 72 DEG C, and the temperature of the 4th warmup period is 77 DEG C.
Preferably, between the first warmup period and the second warmup period, the second warmup period and the 3rd warmup period it
Between, all discharge a vacuum between the 3rd warmup period and the 4th warmup period.
Further, the vacuum values of described dry bin is 15 ~ 20Pa, and the release vacuum retention time is 3 ~ 5min.
Beneficial effects of the present invention: compared with prior art, a kind of vacuum drying process of the present invention, vacuum drying
Period, dry bin at least discharges a vacuum.The present invention is in carrying out process of vacuum drying, when being in vacuum drying,
Under the effect of negative pressure, the moisture content of product surface is evaporated to dryness, and product mutually adsorbs laminating；When the vacuum is released, each product phase
Being in mutually under normal pressure, the moisture content of interiors of products disperses outside product, when vacuum again, and again can be further by outside product
The moisture content on portion and surface is further evaporated；To sum up, use this intermittent vacuum to be dried, product dry can be greatly improved
Drying quality, saves the time being dried, and improves efficiency.
Accompanying drawing explanation
Fig. 1 is the test datagram of prior art.
Fig. 2 is the test datagram of first group of sample of the technical program.
Fig. 3 is the test datagram of second group of sample of the technical program.
Fig. 4 is the test datagram of the 3rd group of sample of the technical program.
Detailed description of the invention
The present invention will be described in detail below in conjunction with the accompanying drawings.
Seeing Fig. 2 to Fig. 4, a kind of vacuum drying process, in vacuum drying period, dry bin at least discharges the trueest
Empty.The present invention is in carrying out process of vacuum drying, when being in vacuum drying, under the effect of negative pressure, and the moisture content of product surface
Being evaporated to dryness, product mutually adsorbs laminating；When the vacuum is released, product is mutually under normal pressure, the moisture content of interiors of products to
Disperse outside product, when vacuum again, can further be steamed by product is outside and surface moisture content further again
Send out；To sum up, use this intermittent vacuum seasoning, the dry mass of product can be greatly improved, save the time being dried, improve
Efficiency.
As further prioritization scheme, when discharging vacuum, it is passed through dry gas to being dried bin.This dry gas can
To guarantee that product, when after time vacuum drying, is dried holding to product formation, it is to avoid contain relatively directly by extraneous air time
Product is caused " counter tide " phenomenon by big temperature.
Certainly, according to experiment, as long as the temperature of described dry gas is maintained at greater than or equal to the temperature of dry bin.Example
As: when the temperature of dry bin is 75 DEG C, dry gas the most at least to remain 75 DEG C, can prevent the generation of " counter tide ".
For portion size more greatly, for thicker product, need to make optimization, the most described vacuum drying phase further
Between, operation includes vacuum, for the first time release, for the second time vacuum, second time release and third time vacuum for the first time successively.Namely
Combine repeatedly release movement by repeatedly vacuum, be finally completely dried operation.So can obtain preferably dry mass.
And as another preferred drying proposal be: it is provided with the first warmup period in vacuum drying period, second heats
Period, the 3rd warmup period and the 4th warmup period.
One, inventor first makes following experiment for existing direct vacuum drying process, by three sections of common CE batteries
(note: be semi-finished product) sample: sample A, sample B and sample C test, testing and control parameter: test temperature control
73 DEG C, vacuum is 15Pa, as follows eventually through test weight result:
The chart of above-mentioned test data sees Fig. 1.
Above-mentioned test data acquisition weight method, from the above it can be seen that existing whole process keeps the back tender of vacuum
Skill extends 20min, 40min, 60min and all can realize, along with drying time, the effect that is dried, but being dried through 60min
After, its moisture content is the biggest.
Two, test for this programme, by the three section common CE batteries identical with above-mentioned prior art test (note:
Be semi-finished product) sample: sample A, sample B and sample C test simultaneously, testing and control parameter: vacuum is 15Pa, according to time
It is 58 DEG C that section is controlled the temperature of the first warmup period 0min, and the temperature of the second warmup period 20min is 63 DEG C, and the 3rd heats
The temperature of period 40min is 68 DEG C, and the temperature of the 4th warmup period 60min is 73 DEG C, and when 10min, 15min, respectively
Discharging a vacuum, release keeps 3min, and as follows eventually through test weight result:
The chart of above-mentioned test data sees Fig. 2.
This test data use weight method equally, from the above it can be seen that discharging at least two in the technical program
After secondary vacuum, when 20min detects, moisture content is greatly reduced, then, heats sequentially passing through the 3rd warmup period and the 4th
After period, the testing result of last three kinds of samples is significantly lower than the test result of existing vacuum drying technique.
Therefore, using the technical program, product can obtain obvious dry mass and drying efficiency.
Three, certain, for the product of different-thickness, inventor has made test again, common by the three of different size sections
(note: be semi-finished product) sample of CE battery: sample C, sample D and sample E test simultaneously, testing and control parameter: vacuum
Degree is 18Pa, and the temperature being controlled the first warmup period according to the period is 60 DEG C, and the temperature of the second warmup period is 65 DEG C, the 3rd
The temperature of warmup period is 70 DEG C, and the temperature of the 4th warmup period is 75 DEG C, and when 10min, only vacuum of release, releases
Put holding 4min, and as follows eventually through test weight result:
The chart of above-mentioned test data sees Fig. 3.
This test data use weight method equally, from the above it can be seen that at 0min ~ 20min in the technical program
Between only discharge a vacuum after, when 20min detects, moisture content is greatly reduced, then, when sequentially passing through the 3rd and heating
After section and the 4th warmup period, the testing result of last three kinds of samples is significantly lower than the test knot of existing vacuum drying technique
Really.
Therefore, using the technical program, product can obtain obvious dry mass and drying efficiency.
Four, inventor has made test again, by (note: be semi-finished product) sample of the three of different size sections of common CE batteries
Product: sample F, sample G and sample H test simultaneously, testing and control parameter: vacuum is 20Pa, are controlled according to the period
The temperature of one warmup period is 62 DEG C, and the temperature of the second warmup period is 67 DEG C, and the temperature of the 3rd warmup period is 72 DEG C, the 4th
The temperature of warmup period is 77 DEG C, and when 10min, release holding 5min, at least vacuum of release, and eventually through
Test weight result is as follows:
The chart of above-mentioned test data sees Fig. 4.
This test data use weight method equally, from the above it can be seen that at 0min ~ 20min in the technical program
Between discharge after a vacuum, when 20min detects, moisture content is greatly reduced, then, is sequentially passing through the 3rd warmup period
After the 4th warmup period, the testing result of last three kinds of samples is significantly lower than the test knot of existing vacuum drying technique
Really.Meanwhile, if use higher temperature during formerly vacuum drying, also whole dry effect can be had impact.
Therefore, using the technical program, product can obtain obvious dry mass and drying efficiency.
And as more excellent processing scheme, when warmup period is changed, i.e. heat at the first warmup period and second
Between period, between the second warmup period and the 3rd warmup period, all discharge between the 3rd warmup period and the 4th warmup period
Vacuum.Such advantage is, can preferably coordinate and heat change and improve dry mass.
Above content is only presently preferred embodiments of the present invention, for those of ordinary skill in the art, according to the present invention's
Thought, the most all will change, and this specification content should not be construed as the present invention
Restriction.
Claims (10)
1. a vacuum drying process, it is characterised in that: in vacuum drying period, dry bin at least discharges a vacuum.
A kind of vacuum drying process the most according to claim 1, it is characterised in that: when discharging vacuum, it is passed through dry gas
Body is to being dried bin.
A kind of vacuum drying process the most according to claim 2, it is characterised in that: the temperature of described dry gas more than or
Equal to the temperature being dried bin.
A kind of vacuum drying process the most according to claim 1, it is characterised in that: described vacuum drying period, operation
Include vacuum, for the first time release, for the second time vacuum, second time release and third time vacuum for the first time successively.
A kind of vacuum drying process the most according to claim 1, it is characterised in that: vacuum drying period is provided with the
One warmup period, the second warmup period, the 3rd warmup period and the 4th warmup period.
A kind of vacuum drying process the most according to claim 5, it is characterised in that: the temperature of described first warmup period is
58 DEG C, the temperature of the second warmup period is 63 DEG C, and the temperature of the 3rd warmup period is 68 DEG C, and the temperature of the 4th warmup period is 73
℃。
A kind of vacuum drying process the most according to claim 5, it is characterised in that: the temperature of described first warmup period is
60 DEG C, the temperature of the second warmup period is 65 DEG C, and the temperature of the 3rd warmup period is 70 DEG C, and the temperature of the 4th warmup period is 75
℃。
A kind of vacuum drying process the most according to claim 5, it is characterised in that: the temperature of described first warmup period is
62 DEG C, the temperature of the second warmup period is 67 DEG C, and the temperature of the 3rd warmup period is 72 DEG C, and the temperature of the 4th warmup period is 77
℃。
A kind of vacuum drying process the most according to claim 5, it is characterised in that: heat at the first warmup period and second
Between period, between the second warmup period and the 3rd warmup period, all discharge between the 3rd warmup period and the 4th warmup period
Vacuum.
10. according to a kind of vacuum drying process described in any one of claim 1 ~ 9, it is characterised in that: described dry bin
Vacuum values is 15 ~ 20Pa, and the release vacuum retention time is 3 ~ 5min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610692142.8A CN106288665A (en) | 2016-08-19 | 2016-08-19 | A kind of vacuum drying process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610692142.8A CN106288665A (en) | 2016-08-19 | 2016-08-19 | A kind of vacuum drying process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106288665A true CN106288665A (en) | 2017-01-04 |
Family
ID=57661527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610692142.8A Pending CN106288665A (en) | 2016-08-19 | 2016-08-19 | A kind of vacuum drying process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106288665A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106798953A (en) * | 2017-03-23 | 2017-06-06 | 苏州桓晨医疗科技有限公司 | A kind of coating stent of medicine drying means |
| CN107062804A (en) * | 2017-04-01 | 2017-08-18 | 湖州市中心医院 | A kind of west safflower alternating temperature drying means |
| CN109028772A (en) * | 2018-08-02 | 2018-12-18 | 老肯医疗科技股份有限公司 | Water-cycle heating and drying cupboard |
| CN112648833A (en) * | 2020-12-24 | 2021-04-13 | 常德中科多源电力融合技术研究院 | Method for drying three-dimensional convolution type lithium ion battery pole piece |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019361A (en) * | 2009-09-15 | 2011-04-20 | 蔡欲期 | Ceramic shell rapid drying method and device as well as ceramic shell |
| CN103322776A (en) * | 2013-06-05 | 2013-09-25 | 奇瑞汽车股份有限公司 | Drying method of lithium ion battery pole pieces |
| JP2015135195A (en) * | 2014-01-16 | 2015-07-27 | 台湾神戸電池股▲分▼有限公司 | Pole plate drying device for secondary battery and pole plate drying method |
| CN104913601A (en) * | 2014-12-29 | 2015-09-16 | 深圳市信宇人科技有限公司 | Method for baking lithium ion battery or battery pole piece in tunnel mode |
| CN105115250A (en) * | 2015-07-27 | 2015-12-02 | 山东精工电子科技有限公司 | Rapid drying method for lithium ion battery cell |
| CN105783427A (en) * | 2016-04-14 | 2016-07-20 | 华南理工大学 | Microwave vacuum drying method achieving staging control |
-
2016
- 2016-08-19 CN CN201610692142.8A patent/CN106288665A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019361A (en) * | 2009-09-15 | 2011-04-20 | 蔡欲期 | Ceramic shell rapid drying method and device as well as ceramic shell |
| CN103322776A (en) * | 2013-06-05 | 2013-09-25 | 奇瑞汽车股份有限公司 | Drying method of lithium ion battery pole pieces |
| JP2015135195A (en) * | 2014-01-16 | 2015-07-27 | 台湾神戸電池股▲分▼有限公司 | Pole plate drying device for secondary battery and pole plate drying method |
| CN104913601A (en) * | 2014-12-29 | 2015-09-16 | 深圳市信宇人科技有限公司 | Method for baking lithium ion battery or battery pole piece in tunnel mode |
| CN105115250A (en) * | 2015-07-27 | 2015-12-02 | 山东精工电子科技有限公司 | Rapid drying method for lithium ion battery cell |
| CN105783427A (en) * | 2016-04-14 | 2016-07-20 | 华南理工大学 | Microwave vacuum drying method achieving staging control |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106798953A (en) * | 2017-03-23 | 2017-06-06 | 苏州桓晨医疗科技有限公司 | A kind of coating stent of medicine drying means |
| CN107062804A (en) * | 2017-04-01 | 2017-08-18 | 湖州市中心医院 | A kind of west safflower alternating temperature drying means |
| CN109028772A (en) * | 2018-08-02 | 2018-12-18 | 老肯医疗科技股份有限公司 | Water-cycle heating and drying cupboard |
| CN112648833A (en) * | 2020-12-24 | 2021-04-13 | 常德中科多源电力融合技术研究院 | Method for drying three-dimensional convolution type lithium ion battery pole piece |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106288665A (en) | A kind of vacuum drying process | |
| CN104218476A (en) | Switch cabinet capable of automatically cooling and dehumidifying | |
| CN103447000A (en) | Modification method of activated carbon fiber and application thereof | |
| CN105180613A (en) | Multi-box type lossless fabric drying system | |
| CN104385413B (en) | A kind of carbonizing treatment method of tender bamboo | |
| CN203642611U (en) | Lithium-ion battery drying oven | |
| CN105276935B (en) | Baking oven is used in a kind of spinning | |
| CN202522052U (en) | Vacuum oven with drying, blast, nitrogen filling and protection functions | |
| CN102538421A (en) | Method and device for drying by heating and dehydrating | |
| CN202211118U (en) | Tower-type grain drying machine | |
| CN204555567U (en) | A kind of novel evacuated drying equipment | |
| CN204439550U (en) | New type atom fluorescence water vapor removal device and Novel atomic fluorescence spectrometer | |
| CN203913245U (en) | A kind of tealeaves continuous drying fragrance extracting machine | |
| CN103141925A (en) | Method for improving processing quality of sheet-like tobacco in tobacco leaf redrying procedure | |
| CN106552483A (en) | A kind of moistureproof drier | |
| CN102431067A (en) | Pretreatment technology of atmospheric superheated steam for improving wood dimension stability | |
| CN103090675B (en) | Continuous vacuum drying and roasting combined method and device thereof | |
| CN203908204U (en) | Cylinder fluidized bed dryer | |
| CN207570286U (en) | Drying system and corresponding drying system integrate | |
| CN207688600U (en) | A kind of corn seed drying system | |
| CN205820017U (en) | A kind of new chemical reagent bottle | |
| CN106196906A (en) | A kind of dewatering for lithium-ion electric core and dehydration equipment | |
| CN103734257A (en) | Sweet potato powder drying apparatus | |
| CN104726940A (en) | Nylon 66 slicing and classifying pretreatment method | |
| CN205561463U (en) | Heat radiation formula is material with carbon element drying equipment for ultracapacitor system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170104 |