CN116972613A - Drying method of down feather - Google Patents
Drying method of down feather Download PDFInfo
- Publication number
- CN116972613A CN116972613A CN202311227984.2A CN202311227984A CN116972613A CN 116972613 A CN116972613 A CN 116972613A CN 202311227984 A CN202311227984 A CN 202311227984A CN 116972613 A CN116972613 A CN 116972613A
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- Prior art keywords
- inner cylinder
- drying
- temperature
- dryer
- feather
- Prior art date
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Links
- 238000001035 drying Methods 0.000 title claims abstract description 52
- 210000003746 feather Anatomy 0.000 title abstract description 37
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000005406 washing Methods 0.000 claims abstract description 6
- 230000018044 dehydration Effects 0.000 claims abstract description 5
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 17
- 238000010793 Steam injection (oil industry) Methods 0.000 claims 2
- 238000003756 stirring Methods 0.000 description 18
- 238000005507 spraying Methods 0.000 description 14
- 241000272525 Anas platyrhynchos Species 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/12—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices
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- 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
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
-
- 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
- F26B21/005—Drying-steam generating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/04—Agitating, stirring, or scraping devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a down drying method, which is characterized in that the down after washing and centrifugal dehydration is placed in an inner cylinder of a down dryer, the down is dried for 400-500 s in a first rotation way at the temperature of 70-80 ℃ in the inner cylinder, then is left for 110-120 s, and is dried for 120-125 s in a second rotation way at the temperature of 90-95 ℃ in the inner cylinder. The method can improve the fluffiness of the dried down feather by about 10 percent.
Description
Technical Field
The invention relates to the technical field of drying, in particular to a method for drying down.
Background
The down is an important raw material in the down jacket industry, the down bulk directly influences the warmth retention property of the down product, and the improvement of the down bulk is significant for improving the quality level of the down product and reducing the down consumption of the single down product.
The conventional down washing process in the down industry comprises the working procedures of raw wool splitting, primary washing, fine washing, rinsing, dehydration, drying, cooling, dust removal and the like. After the feather is dehydrated by a centrifugal machine, the residual water content in the feather is about 60%, and the feather is in a wet and agglomerated state at the moment and is similar to a wet and bonded cotton wool state. In order to make down fluffy, the prior art mainly adopts high-temperature steam at 120 ℃ to heat down in an inner cylinder of a dryer, and simultaneously exchanges damp and hot air in the dryer with the outside, so that the water content in the down is reduced to between 12 and 13 percent, the fluffy state of the down is restored again, the whole heating and dehumidifying process is continuous, and the down is called a disposable drying method in the down industry. The disposable drying method is adopted, so that the down in the inner barrel of the dryer is in a high-temperature environment of about 90 ℃ for a long time, and the fluffiness of the dried down is difficult to further improve.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a drying method of down, which solves the problem that the fluffiness of the down is difficult to improve.
The technical scheme of the invention is as follows: a down drying method is that the down after washing and centrifugal dewatering is put into the inner cylinder of the down dryer, the first rotary drying is carried out for 400-500 s at 70-80 deg.C in the inner cylinder, then the second rotary drying is carried out for 120-125 s at 90-95 deg.C in the inner cylinder after the down is left stand for 110-120 s.
Further, when the first rotation is performed, the temperature in the inner cylinder is 70-75 ℃, and the drying time is 450-480 s.
Further, during the second rotary drying, the temperature in the inner cylinder is 90-92 ℃.
Further, the feeding amount of the centrifugally dewatered down feather is 4-6.5 kg/m when the centrifugally dewatered down feather is placed in the inner cylinder of the down feather dryer 3 。
Further, when the inner cylinder is rotated and dried for the first time, steam at 105-115 ℃ is sprayed on the outer wall of the inner cylinder to heat and raise the temperature in the inner cylinder.
Further, during the second rotary drying, steam at 120-125 ℃ is sprayed on the outer wall of the inner cylinder to heat and raise the temperature in the inner cylinder.
Further, the water content of the down after centrifugal dehydration is 60% -65%.
Further, the moisture content of the dried down is 12% -13%.
The technical scheme provided by the invention has the advantages that:
according to the invention, through twice drying, the high-temperature drying time is reduced, the temperature of the down in the dryer is lower than 150s at 90 ℃, the damage of the down under the high-temperature condition is reduced, the denaturation and brittleness generated by the long-time high-temperature environment of which the temperature is about 90 ℃ of protein fibers are reduced, and the elasticity is reduced. In addition, the weight of down feather put in a unit volume is reduced, and the unit mass of down feather can obtain a larger stretching space, so that the aim of improving the fluffiness of the down feather is fulfilled.
Compared with the traditional down drying process, the whole fluffiness of the down can be improved by more than 10%, and the down filling amount (the fluffiness and the warmth retention property of the down are positively related) of the down product is reduced by about 10% on the premise of achieving the same warmth retention effect. Meanwhile, the visual effect of the down feather is improved, so that the down feather is plump in appearance, and the down feather cores are more prominent.
Detailed Description
The invention is further illustrated, but is not limited, by the following examples.
The practical down dryer provided by the embodiment of the invention has the structure in the prior art, and comprises an outer barrel and an inner barrel, wherein a plurality of steam spray heads are arranged on the outer barrel, the steam spray heads are arranged towards the inner barrel, the inner barrel is heated by steam spraying to raise the temperature in the inner barrel, and stirring paddles are also arranged in the inner barrel and used for stirring down.
Example 1
In the inner cylinder of the down dryer, the weight of the down dryer is 4kg/m 3 Adding washed and centrifugally dehydrated duck down, wherein the water content of the centrifugally dehydrated down is about 60%. The inner cylinder is heated by spraying at 105 ℃ to enable the temperature in the inner cylinder to reach 70 ℃, down feather is heated while being stirred, the down feather is dried for the first time in a rotating way, the drying time is 500s, and the water content of the down feather is about 20%. Stopping the steam heating and the stirring operation of the stirring blade in the dryer, and keeping the feather velvet in the dryer still for 120s. And then the inner cylinder is heated by spraying at 120 ℃ to enable the temperature in the inner cylinder to reach 95 ℃, the down is heated while being stirred, the second rotary drying is carried out, the drying time is 120s, the down is taken out after the drying of the down is completed, the water content of the dried down is 12%, and the down content is 88.3%.
Example 2
In the inner cylinder of the down dryerAccording to 4kg/m 3 Adding washed and centrifugally dehydrated duck down, wherein the water content of the centrifugally dehydrated down is about 60%. The inner cylinder is heated by spraying at 110 ℃ to enable the temperature in the inner cylinder to reach 75 ℃, down feather is heated while being stirred, the down feather is dried for the first time in a rotating way, the drying time is 480s, and the water content of the down feather is about 20%. Stopping the steam heating and the stirring operation of the stirring blade in the dryer, and keeping the feather velvet in the dryer still for 120s. And then the inner cylinder is heated by spraying at 120 ℃ to enable the temperature in the inner cylinder to reach 90 ℃, the down is heated while being stirred, the second rotary drying is carried out, the drying time is 120s, the down is taken out after the drying of the down is completed, the water content of the dried down is 12%, and the down content is 88.1%.
Example 3
In the inner cylinder of the down dryer, the weight of the down dryer is 4kg/m 3 Adding washed and centrifugally dehydrated duck down, wherein the water content of the centrifugally dehydrated down is about 60%. The inner cylinder is heated by spraying at 110 ℃ to enable the temperature in the inner cylinder to reach 72 ℃, down feather is heated while being stirred, the down feather is dried for the first time in a rotating way, the drying time is 450s, and the water content of the down feather is about 20%. Stopping the steam heating and stirring operation of the stirring blade in the dryer, and keeping the feather velvet in the dryer still for 110s. And then the inner cylinder is heated by spraying at 120 ℃ to enable the temperature in the inner cylinder to reach 95 ℃, the down is heated while being stirred, the second rotary drying is carried out, the drying time is 125 seconds, the down is taken out after the drying of the down is completed, the water content of the dried down is 12%, and the down content is 88.5%.
Example 4
In the inner cylinder of the down dryer, the weight of the down dryer is 4kg/m 3 Adding washed and centrifugally dehydrated duck down, wherein the water content of the centrifugally dehydrated down is about 60%. Spraying and heating the inner cylinder at 115 ℃ to enable the temperature in the inner cylinder to reach 80 ℃, stirring and heating down feather, and performing first rotation drying for 400 seconds. The steam heating and stirring operation of the stirring blade in the dryer were stopped, and the feather down in the dryer was kept stationary for 115s. Then the inner cylinder is heated by spraying at 125 ℃ to enable the temperature in the inner cylinder to reach 92 ℃, the down feather is heated while being stirred, the second rotary drying is carried out for 125 seconds, and the down feather is taken out after the drying of the down feather is completedThe moisture content of the down after drying is 13%, and the down content is 88.0%.
Example 5
In the inner cylinder of the down dryer, the weight of the down dryer is 5kg/m 3 Adding washed and centrifugally dewatered duck down, wherein the water content of the centrifugally dewatered down is about 65%. Spraying and heating the inner cylinder at 105 ℃ to enable the temperature in the inner cylinder to reach 70 ℃, stirring and heating down feather, and performing first rotation drying for 450s. Stopping the steam heating and the stirring operation of the stirring blade in the dryer, and keeping the feather velvet in the dryer still for 120s. And then the inner cylinder is heated by spraying at 125 ℃ to enable the temperature in the inner cylinder to reach 95 ℃, the down is heated while being stirred, the second rotary drying is carried out, the drying time is 125 seconds, the down is taken out after the drying of the down is completed, the water content of the dried down is 12%, and the down content is 88.1%.
Example 6
In the inner cylinder of the down dryer, the weight of the down dryer is 6.5kg/m 3 Adding washed and centrifugally dewatered duck down, wherein the water content of the centrifugally dewatered down is about 65%. Spraying and heating the inner cylinder at 105 ℃ to enable the temperature in the inner cylinder to reach 70 ℃, stirring and heating down feather, and performing first rotation drying for 450s. Stopping the steam heating and the stirring operation of the stirring blade in the dryer, and keeping the feather velvet in the dryer still for 120s. And then the inner cylinder is heated by spraying at 125 ℃ to enable the temperature in the inner cylinder to reach 95 ℃, the down is heated while being stirred, the second rotary drying is carried out, the drying time is 125 seconds, the down is taken out after the drying of the down is completed, the water content of the dried down is 13%, and the down content is 88.5%.
Comparative example
In the inner cylinder of the down dryer, the weight of the down dryer is 4kg/m 3 Adding washed and centrifugally dehydrated duck down, wherein the water content of the centrifugally dehydrated down is about 60%. Spraying and heating the inner cylinder at 120 ℃ to enable the temperature in the inner cylinder to reach 90 ℃, stirring and heating down, performing rotary drying for 900 seconds, taking down out after the down is dried, wherein the water content of the dried down is 12%, and the down content is 88.2%.
The results of the detection of the bulk of the down obtained in each of the above examples and comparative examples in accordance with GB/T10288-2016 method for feather detection of down are shown in the following table.
Table 1 the bulk test data for examples 1-6 and comparative examples
Claims (8)
1. A down drying method is characterized in that the down after washing and centrifugal dehydration is placed in an inner cylinder of a down dryer, the down is dried for 400-500 s in a first rotation mode at the temperature of 70-80 ℃ in the inner cylinder, then is left for 110-120 s, and is dried for 120-125 s in a second rotation mode at the temperature of 90-95 ℃ in the inner cylinder.
2. The method according to claim 1, wherein the temperature in the inner cylinder is 70-75 ℃ and the drying time is 450-480 s during the first rotary drying.
3. The method according to claim 1, wherein the temperature in the inner cylinder is 90-92 ℃ during the second rotary drying.
4. The method for drying down according to claim 1, wherein the centrifugal dewatered down is placed in the inner cylinder of the down dryer in an amount of 4-6.5 kg/m 3 。
5. The method according to claim 1, wherein the first rotary drying is performed by heating the outer wall of the inner cylinder to raise the temperature inside the inner cylinder by steam injection at 105-115 ℃.
6. The method according to claim 1, wherein the second rotary drying is performed by heating the outer wall of the inner cylinder to raise the temperature inside the inner cylinder by steam injection at 120-125 ℃.
7. The method for drying down according to claim 1, wherein the water content of the down after centrifugal dehydration is 60% -65%.
8. The method for drying down according to claim 1, wherein the moisture content of the dried down is 12% -13%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311227984.2A CN116972613A (en) | 2023-09-22 | 2023-09-22 | Drying method of down feather |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311227984.2A CN116972613A (en) | 2023-09-22 | 2023-09-22 | Drying method of down feather |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116972613A true CN116972613A (en) | 2023-10-31 |
Family
ID=88473367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311227984.2A Pending CN116972613A (en) | 2023-09-22 | 2023-09-22 | Drying method of down feather |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116972613A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153145A (en) * | 2014-08-25 | 2014-11-19 | 江苏欣隆羽绒有限公司 | Down feather washing technology |
| CN104562625A (en) * | 2015-01-09 | 2015-04-29 | 陕西科技大学 | Physically and chemically combined settling method for washed down feather |
| CN109518470A (en) * | 2018-10-24 | 2019-03-26 | 河南省鹏达羽绒制品有限公司 | A kind of natural feather degreasing process |
| CN219368228U (en) * | 2023-03-07 | 2023-07-18 | 安徽省无为县胜达羽毛制品有限公司 | Dryer for feather piece processing |
-
2023
- 2023-09-22 CN CN202311227984.2A patent/CN116972613A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153145A (en) * | 2014-08-25 | 2014-11-19 | 江苏欣隆羽绒有限公司 | Down feather washing technology |
| CN104562625A (en) * | 2015-01-09 | 2015-04-29 | 陕西科技大学 | Physically and chemically combined settling method for washed down feather |
| CN109518470A (en) * | 2018-10-24 | 2019-03-26 | 河南省鹏达羽绒制品有限公司 | A kind of natural feather degreasing process |
| CN219368228U (en) * | 2023-03-07 | 2023-07-18 | 安徽省无为县胜达羽毛制品有限公司 | Dryer for feather piece processing |
Non-Patent Citations (1)
| Title |
|---|
| 崔富春: "《禽产品加工技术》", 北京：中国社会出版社, pages: 365 - 367 * |
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