CN103017484A - Wood vacuum drying method and device - Google Patents
Wood vacuum drying method and device Download PDFInfo
- Publication number
- CN103017484A CN103017484A CN2012105266604A CN201210526660A CN103017484A CN 103017484 A CN103017484 A CN 103017484A CN 2012105266604 A CN2012105266604 A CN 2012105266604A CN 201210526660 A CN201210526660 A CN 201210526660A CN 103017484 A CN103017484 A CN 103017484A
- Authority
- CN
- China
- Prior art keywords
- wood
- timber
- water
- drying
- flexible bags
- 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
Images
Abstract
The invention discloses a wood vacuum drying method and device, belonging to the technical field of wood vacuum drying in the wood drying industry. According to the invention, by adopting a wood flexible vacuum dryer technology, the traditional wood vacuum drying metal tank body is eliminated, and dry wood is placed in a flexible pipe with good airtightness and heat conduction property, two ends of the flexible pipe are sealed, connected with a vacuum pump, and then placed in a water bath. After vacuumizing is started, the outer wall of wood is in tight contact with the flexible pipe, heat is directly conducted to the inner part from the outer wall of the wood, and water in the wood is evaporated and then is longitudinally discharged along the wood. Compared with the traditional wood vacuum drying, the wood vacuum drying method has the remarkable effects of little equipment investment and high drying speed, capability of drying plate lumbers with general specifications, especial suitability for drying various special materials, good drying quality, high drying speed, capability of reducing seasoning degrade loss and saving drying cost, remarkable economic benefit and long social and ecological benefit.
Description
Technical field
The invention belongs to the vacuum drying of wood technical field in the drying of wood industry, relate to a kind of Fast Heating, quickly drying method and device of vacuum drying of wood.
Background technology
The drying of wood is the important step of timber processing.The drying of wood has several different methods, and wherein the timber conventional drying can be satisfied the plate square bar drying of common-use size, and dry mass is good, and rate of drying is fast, and the drying equipment technology reaches a standard, and drying process is ripe, accounts for the leading position of China's drying of wood.Yet except the sawn timber of common-use size, China also has a considerable amount of special materials to need drying every year, such as, because the n duration needs, the log of large footpath level is carried out rapid draing; The precious timber slabs such as redwood or blank need drying; The special-shaped timber such as handicraft blank need to carry out drying; Along with the development of timber buildings in China, also have the large specification framework material of increase year after year to need drying.The quantity of this class timber is compared with the plate square bar quantity of common-use size and is not very large, but it is essential also to belong to market, and added value of product is high, need badly a kind of safe, efficient, high-quality, drying method goes to solve a dry difficult problem fast.
The present invention adopts the flexible vacuum drying technique of timber, be essentially different with traditional vacuum drying of wood method, the technology has been abandoned traditional vacuum drying of wood metal can, but the timber that will be dried is put into air-tightness, the good flexible duct of thermal conductivity, sealed at both ends and with after vavuum pump is connected, put into water-bath.After beginning to vacuumize, timber outer wall and flexible duct close contact, heat directly passes to inside by the timber outer wall, vertically discharges along timber after the moisture evaporation in the timber.
Compare with the traditional timber vacuum drying, the outstanding advantages of this technology is little except equipment investment, rate of drying soon, plate square bar that not only can dry common-use size, also be particularly suitable for dry various special materials above-mentioned, dry mass is good, rate of drying is fast, can reduce the seasoning degrade loss, saves drying cost.Not only have significant economic benefit, and have long-range society and ecological benefits.
The advance of the technology is:
1 present general vacuum dryer both at home and abroad all adopts pot type or box rigid container to load timber, belongs to the vacuum pressure tankage, and equipment is complicated, cost is high; The present invention adopts the flexible vacuum-packed timber that loads, and equipment is simple, and cost is low.
2 present general vacuum dryers both at home and abroad adopt the mode of radiation and Convective Heating that timber is heated usually, affect thermal conduction effect because air dielectric under vacuum state reduces.The present invention adopts water-bath that flexible vacuum-packed interior timber is heated, and thermal capacity is conducted greatly and for contact heat, and heating effect is good.
3 present general vacuum dryers both at home and abroad all adopt multilayer parallel to pile up the mode of material heap, and the timber that requires to be dried is the plate square bar, and the thickness specification is consistent.Can not dry profile shapes, the material such as log and handicraft blank material.This method can be used for dry large dimension stock, special section, precious timber, handicraft blank material etc. to the not strict restriction of shape, specification of the timber that is dried, and the scope of application is wider.
4 adopt the wood plank square bar of the dry common-use size of this technology, and rate of drying is that conventional drying speed is more than 4 times; Dry large scale dimension stock, log, precious timber wood products abnormity component, handicraft blank etc., rate of drying can reach conventional drying speed more than 10 times
Summary of the invention
The objective of the invention is in order to overcome the deficiencies in the prior art, the flexible vacuum quickly drying method of a kind of timber and device are provided, can effectively reduce the vacuum dryer cost, improve hot transfer efficiency, reduce drying time, improve the sheet material dry mass.
For achieving the above object, the present invention takes following technical scheme:
A kind of timber vacuum drying device is characterized in that:
This device comprises the flexible bags 2 of placing timber 3 to be dried, flexible bags places in the water bath 1, water bath 1 connects homogeneous solution-type reactor 14 by hot water valve 12, hot water circulating pump 13 and forms a closed-loop path, laying temperature sensor in the water bath, and temperature sensor connects controller 15;
Sub-cylinder 7 connects an end of vavuum pump 11, and the other end of vavuum pump 11 connects water tank 9; Also be connected to cooling tower 8 by cold water circulation pump 10 in the water tank 9, cold water circulation pump 10 also connects the other end of vavuum pump 11.
The inventive method is characterised in that and comprises the steps:
The A flexible bags: timber to be dried 3 is put in flexible bags 2, packaging bag configuration waterproof slide fastener, after timber is packed into, closed zipper;
B heating: wood to be dried is packed into behind the flexible bags, place in the water bath 1 and heat; Water in the water bath, through hot water circulating pump 13, input hot-water boiler 14 returns water bath 1 after the heating; After temperature reached setting value, hot water circulating pump 13 quit work; After temperature was lower than setting value, circulating pump started, and and so forth, water bath 1 temperature is remained on about setting value, and desired temperature is 40-80 ℃;
C vacuumizes: open vavuum pump 11, make the vacuum pressure in the sub-cylinder 7 reach 0kPa ~-102 kPa, use flexible pipe 4 that flexible bags is connected with making sub-cylinder 7, and open hose valve 5, the air in the flexible bags is extracted out; Vacuum is set with pressure sensor 6 and the controller 15 kept by sub-cylinder 7 and is realized;
The D circulating water: open cold water-circulating pump 10, the water in the water tank 9 is introduced in the cooling tower 8, turns back to after the cooling in the water tank 9;
E: vacuum drying of wood: according to the moisture content of timber, set the temperature of vacuums and water bath 1 by controller 15, make the timber 3 in the flexible bags 2 under continuous heating and continuous condition of negative pressure, carry out rapid draing; When the moisture content of the timber 3 in the flexible bags 2 arrived setting value, dry run finished.
Further, the bag of described flexible bags 2 is made by the proprietary material of surfaces externally and internally PVC Intermediate Gray reinforcing mat structure.
Further, the method for the moisture content of timber 3 by timber to be dried and flexible bags integral body are weighed, the flexible bags that perhaps will be placed with timber to be dried takes out from cleansing bath tub and obtains by tester, and perhaps the on-line measurement moisture content obtains.
The invention provides the flexible vacuum quickly drying method of a kind of timber and device, can effectively reduce the vacuum dryer cost, improve hot transfer efficiency, reduce drying time, improve the sheet material dry mass.The invention will be further described below in conjunction with the drawings and specific embodiments, is not limitation of the present invention, every any this area of carrying out according to the disclosure of invention be equal to replacement, all belong to protection scope of the present invention.
Description of drawings
The flexible Minton dryer figure of a kind of timber of Fig. 1.
The specific embodiment:
The inventive method comprises the steps:
Timber to be dried 3 is put in flexible bags 2, packaging bag configuration waterproof slide fastener, after timber is packed into, closed zipper;
Wood to be dried is packed into behind the flexible bags, place in the water bath 1 and heat.Water in the water bath, through hot water circulating pump 13, input hot-water boiler 14 returns water bath after the heating.After temperature reached setting value, hot water circulating pump 13 quit work; After temperature was lower than setting value, circulating pump started, and and so forth, water bath 1 temperature is remained on about setting value;
Open cold water-circulating pump 10, the water in the water tank 9 is introduced in the cooling tower 8, turns back to after the cooling in the water tank 9, realizes the water in the water tank 9 is cooled off.
According to the moisture content of timber, set the temperature of vacuums and water bath 1 by controller 15, make the timber 3 in the flexible bags 2 under continuous heating and continuous condition of negative pressure, carry out rapid draing.When the moisture content of the timber 3 in the flexible bags 2 arrived setting value, dry run finished.
Claims (4)
1. timber vacuum drying device is characterized in that:
This device comprises the flexible bags (2) of placing timber (3) to be dried, flexible bags places in the water bath (1), water bath (1) connects homogeneous solution-type reactor (14) by hot water valve (12), hot water circulating pump (13) and forms a closed-loop path, laying temperature sensor in the water bath (1), temperature sensor connects controller (15);
Flexible bags (2) is comprised of bag, opening and interface three parts: opening adopts slide fastener, and interface is the vacuum-pumping tube pipeline joint on the bag;
Flexible bags (2) is by interface connecting hose (4), and flexible pipe (4) is connected with sub-cylinder (7); Hose valve (5) is housed on the flexible pipe (4), and sub-cylinder (7) is provided with pressure sensor (6); Pressure sensor (6) connects controller (15);
Sub-cylinder (7) connects an end of vavuum pump (11), and the other end of vavuum pump (11) connects water tank (9); Also be connected to cooling tower (8) by cold water circulation pump (10) in the water tank (9), cold water circulation pump (10) also connects the other end of vavuum pump (11).
2. application rights requires 1 described device to carry out the vacuum drying of wood method, it is characterized in that comprising the steps:
The A flexible bags: timber to be dried (3) is put in flexible bags (2), packaging bag configuration waterproof slide fastener, after timber is packed into, closed zipper;
B heating: wood to be dried is packed into behind the flexible bags, place in the water bath (1) and heat; Water in the water bath, through hot water circulating pump (13), input hot-water boiler (14) returns water bath (1) after the heating; After temperature reached setting value, hot water circulating pump (13) quit work; After temperature was lower than setting value, circulating pump started, and and so forth, water bath (1) temperature is remained on about setting value, and desired temperature is 40-80 ℃;
C vacuumizes: open vavuum pump (11), make the vacuum pressure in the sub-cylinder (7) reach 0kPa ~-102 kPa, use flexible pipe (4) that flexible bags (2) is connected with making sub-cylinder (7), and open hose valve (5), the air in the flexible bags (2) is extracted out; Vacuum is set with pressure sensor (6) and the controller (15) kept by sub-cylinder (7) and is realized;
The D circulating water: the water in the open cold water-circulating pump (10), water tank (9) is introduced in the cooling tower (8), turns back to after the cooling in the water tank (9);
E: vacuum drying of wood: according to the moisture content of timber, set the temperature of vacuum and water bath (1) by controller (15), make the timber (3) in the flexible bags (2) under continuous heating and continuous condition of negative pressure, carry out rapid draing; When the moisture content of the timber (3) in the flexible bags (2) arrived setting value, dry run finished.
3. a kind of vacuum drying of wood method according to claim 2 is characterized in that, is made by the proprietary material of surfaces externally and internally PVC Intermediate Gray reinforcing mat structure of the bag of described flexible bags (2).
4. a kind of vacuum drying of wood method according to claim 2, it is characterized in that, the method of the moisture content of timber (3) by timber to be dried and flexible bags (2) integral body are weighed, the flexible bags (2) that perhaps will be placed with timber to be dried takes out from cleansing bath tub and obtains by tester, and perhaps the on-line measurement moisture content obtains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105266604A CN103017484A (en) | 2012-12-08 | 2012-12-08 | Wood vacuum drying method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105266604A CN103017484A (en) | 2012-12-08 | 2012-12-08 | Wood vacuum drying method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103017484A true CN103017484A (en) | 2013-04-03 |
Family
ID=47966372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105266604A Pending CN103017484A (en) | 2012-12-08 | 2012-12-08 | Wood vacuum drying method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103017484A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103203789A (en) * | 2013-05-03 | 2013-07-17 | 田庆记 | Manufacturing method of mahogany furniture |
| CN103968652A (en) * | 2014-04-29 | 2014-08-06 | 李亚光 | Water bath vacuum oven system and baking method thereof |
| CN104215061A (en) * | 2014-07-02 | 2014-12-17 | 北京理工大学 | Dynamic inner spiral rotary liquid-bath drying equipment and application thereof |
| CN104928966A (en) * | 2015-06-17 | 2015-09-23 | 湖南广信科技股份有限公司 | Drying technology for paper and paperboard |
| CN105865166A (en) * | 2016-05-07 | 2016-08-17 | 中山市太兴家具有限公司 | Flexible vacuum drying method and flexible vacuum drying device for wood |
| CN109262778A (en) * | 2018-11-27 | 2019-01-25 | 西北农林科技大学 | The system and device of pest and germ is eliminated in a kind of wood materials vacuum dehumidifying |
| CN111076502A (en) * | 2018-10-22 | 2020-04-28 | 北京银星宇科技开发有限公司 | Drying equipment using sealed soft capsules as drying chamber |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4194296A (en) * | 1977-05-17 | 1980-03-25 | Pagnozzi Ernesto Guglielmo | Vacuum drying kiln |
| WO2003004952A2 (en) * | 2001-07-06 | 2003-01-16 | Virginia Tech Intellectual Properties, Inc. | Method and apparatus for vacuum drying wood |
| CN2896080Y (en) * | 2006-04-20 | 2007-05-02 | 北京中竞同创能源环境技术有限公司 | Novel hot-water heat-supplying circulation device |
| CN101178282A (en) * | 2007-12-12 | 2008-05-14 | 北京林业大学 | Wood drying device |
| CN101236048A (en) * | 2008-02-26 | 2008-08-06 | 中国林业科学研究院木材工业研究所 | Wood drying method |
| CN202973768U (en) * | 2012-12-08 | 2013-06-05 | 中国林业科学研究院木材工业研究所 | Wood vacuum drying device |
-
2012
- 2012-12-08 CN CN2012105266604A patent/CN103017484A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4194296A (en) * | 1977-05-17 | 1980-03-25 | Pagnozzi Ernesto Guglielmo | Vacuum drying kiln |
| WO2003004952A2 (en) * | 2001-07-06 | 2003-01-16 | Virginia Tech Intellectual Properties, Inc. | Method and apparatus for vacuum drying wood |
| CN2896080Y (en) * | 2006-04-20 | 2007-05-02 | 北京中竞同创能源环境技术有限公司 | Novel hot-water heat-supplying circulation device |
| CN101178282A (en) * | 2007-12-12 | 2008-05-14 | 北京林业大学 | Wood drying device |
| CN101236048A (en) * | 2008-02-26 | 2008-08-06 | 中国林业科学研究院木材工业研究所 | Wood drying method |
| CN202973768U (en) * | 2012-12-08 | 2013-06-05 | 中国林业科学研究院木材工业研究所 | Wood vacuum drying device |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103203789A (en) * | 2013-05-03 | 2013-07-17 | 田庆记 | Manufacturing method of mahogany furniture |
| CN103968652A (en) * | 2014-04-29 | 2014-08-06 | 李亚光 | Water bath vacuum oven system and baking method thereof |
| CN103968652B (en) * | 2014-04-29 | 2016-05-25 | 李亚光 | A kind of water-bath vacuum oven system and baking method thereof |
| CN104215061A (en) * | 2014-07-02 | 2014-12-17 | 北京理工大学 | Dynamic inner spiral rotary liquid-bath drying equipment and application thereof |
| CN104215061B (en) * | 2014-07-02 | 2017-01-11 | 北京理工大学 | Dynamic inner spiral rotary liquid-bath drying equipment and application thereof |
| CN104928966A (en) * | 2015-06-17 | 2015-09-23 | 湖南广信科技股份有限公司 | Drying technology for paper and paperboard |
| CN105865166A (en) * | 2016-05-07 | 2016-08-17 | 中山市太兴家具有限公司 | Flexible vacuum drying method and flexible vacuum drying device for wood |
| CN111076502A (en) * | 2018-10-22 | 2020-04-28 | 北京银星宇科技开发有限公司 | Drying equipment using sealed soft capsules as drying chamber |
| CN109262778A (en) * | 2018-11-27 | 2019-01-25 | 西北农林科技大学 | The system and device of pest and germ is eliminated in a kind of wood materials vacuum dehumidifying |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103017484A (en) | Wood vacuum drying method and device | |
| CN104596207A (en) | Flat plate type vacuum pulsation drying machine | |
| CN204478774U (en) | A kind of heat pipe medicinal material drying equipment | |
| CN105352271A (en) | Vacuum pulse driving device based on superconductive tubes | |
| CN205138097U (en) | High accuracy vacuum baking oven | |
| CN202973768U (en) | Wood vacuum drying device | |
| CN203697186U (en) | Wood vacuum drying and wax-injection dual-purpose machine | |
| CN203712808U (en) | Wood cold-hot immersion treatment equipment | |
| CN204100773U (en) | A kind of can the vacuum infrared drying device of real-time tracking material water ratio | |
| CN207351093U (en) | A kind of hot wind flow-through type drying box | |
| CN206919578U (en) | A kind of grain drier | |
| CN203928630U (en) | Hollow type cylinder vacuum drying chamber | |
| CN207351085U (en) | A kind of ELECTROMAGNETIC VACUUM drying box | |
| CN107255393A (en) | A kind of ELECTROMAGNETIC VACUUM drying box | |
| CN204120150U (en) | Food drying device | |
| CN205351978U (en) | Rotary type dryer | |
| CN108266977A (en) | It is a kind of that efficient food processing freeze-drying apparatus is lyophilized | |
| CN204255045U (en) | A kind of glass fibre wets product dried system | |
| CN206695578U (en) | Novel steel cylinder annealing device | |
| CN209445716U (en) | A kind of direct-injection type hot air seasoning equipment | |
| CN204421571U (en) | Tea drier | |
| CN206817893U (en) | A kind of drying room for baking brick tea | |
| CN205969646U (en) | 66 line firing equipments of nylon | |
| CN204165336U (en) | Pearlife drying device | |
| CN209326212U (en) | A kind of Wood vacuum drying equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130403 |