CN105135872A - Method for drying rosewood - Google Patents
Method for drying rosewood Download PDFInfo
- Publication number
- CN105135872A CN105135872A CN201510597899.4A CN201510597899A CN105135872A CN 105135872 A CN105135872 A CN 105135872A CN 201510597899 A CN201510597899 A CN 201510597899A CN 105135872 A CN105135872 A CN 105135872A
- Authority
- CN
- China
- Prior art keywords
- kiln
- drying
- moisture content
- wood
- sawn timber
- 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
Abstract
The invention relates to the technical field of wood drying, in particular to a method for drying rosewood. The method includes the following steps: 1, the rosewood is selected, wherein sawn timber with different thicknesses should be respectively dried, and when the quantity of the wood is smaller than that of wood with which a kiln is fully filled, it is allowed that trees with the similar drying characteristics and the similar primary water contents can be dried in the same kiln; 2, the primary water contents are measured, and the sawn timber is detected to obtain the water contents, wherein the sawn timber with the different water contents should be respectively dried; 3, stacking is carried out, wherein it should be guaranteed that air flow in the kiln reasonably circulates, the capacity of the kiln is sufficiently used, and warping and end cracks of the wood are prevented; 4, water content detection plates are arranged in the kiln, and the water contents are detected, wherein the water content detection plates for the wood needing to be dried in the same kiln are determined according to requirements; 5, the temperature and the humidity in the drying kiln are controlled through a temperature controller and a humidity controller according to a drying standard. According to the method, the wood drying processes are reasonably and properly selected, and the dried wood is good in quality and few in defect; in addition, drying time is shortened, the use rate of wood resources is high, energy is saved, and energy consumption is reduced.
Description
Technical field
The present invention relates to Wood Drying Technology field, particularly relate to a kind of drying means of rosewood.
Background technology
The drying of wood is the very important operation of in timber process, is again improve timber utilization rate simultaneously, saves the important channel of the forest reserves.The dry run of timber is the process of Water In Wood evaporation, and because moisture various in timber is different with the structural relation of timber, the character of each stage Water In Wood is just different, and the character just difference of timber correspondingly.Therefore, in the dry run of timber, constantly monitor the moisture content of timber thus reasonably control moisture content in timber, under the prerequisite ensureing dry mass, improving rate of drying as far as possible.
In timber drying, moisture content is the important parameter formulating drying schedule, regulation and control dry run, guarantee end product quality, and drying of wood theory and practice is all extremely important.Reasonably the common way of control moisture evaporation is character, specification and the moisture content according to timber, controls the intensity of Water In Wood evaporation.The program list of the drying medium temperature and humidity change that drying schedule is exactly change according to drying time and timber state (moisture content, stress) and works out, in actual drying process, this program list of correct execution, just reasonably can control the dry run of timber, thus ensure the dry mass of timber.
Summary of the invention
The present invention is in order to solve above-mentioned existing technical disadvantages, a kind of drying means of rosewood is provided, the method carries out drying to timber, measure accurately to moisture content in dry run, drying of wood procedure Selection rationally, suitably, dried wood quality is good, defect is few, but also shorten drying time, timber resources utilization rate is high, the energy-conservation energy, reduces energy consumption.
For achieving the above object, the invention provides a kind of drying means of rosewood, comprise the following steps:
(1) carry out selection to rosewood, the sawn timber of different thickness should distinguish drying, during timber lazy weight one kiln, to allow drying property and the seeds that just moisture content is close are dry with kiln drying;
(2) measure just moisture content, detect sawn timber and draw moisture content, the sawn timber of different water cut should distinguish drying;
(3) stacking, should ensure that airstream in kiln rationally circulates, make full use of the capacity of kiln, prevent warp in wood and end check;
(4) in kiln, place moisture content sample board, determine as requested to need the moisture content sample board with kiln desiccated wood, inspection moisture content;
(5) temperature and humidity in temperature controller and humidity controller control dry kiln is adopted according to drying schedule.
Concrete, in described step (2), the method for testing of moisture content comprises the following steps:
(1), to sawn timber supply water fully, its Bole moisture rate is reached or peak under access expansion state;
(2), the trunk of sawn timber is divided into some trunk sections;
(3), use instrument at the flank hole of trunk section, the diameter of boring is consistent with the probe of the degree of depth and TDR, and probe can all insert trunk section and contact is tight;
(4), high accuracy balance measurement trunk section quality is utilized, and record, the i.e. weight in wet base of trunk section, TDR is utilized to carry out measurement of water ratio to it subsequently, measure 6 times, average as this measurement result and record, this is the measurement of water ratio value in this moment of trunk section.
Further, described in described step (5), the drying schedule of rosewood comprises:
(1) sawn timber the pre-heat treatment, is provided with dry bulb thermometer in kiln and wet bulb thermometer keeps dry-bulb temperature 65 degree in kiln, in wet-bulb temperature 45-53 degree, maintains 2 hours;
(2), when measuring sawn timber in 30% moisture content stage, keep dry-bulb temperature 75 degree in kiln, wet-bulb temperature 60 degree, maintains 1 hour;
(3), when measuring sawn timber in 20% moisture content stage, dry-bulb temperature 80 degree in protection kiln, wet-bulb temperature 65 degree, intermediate treatment 3-4 time, each maintenance 2 hours;
(4), the sawn timber 8-12% moisture content stage, carry out end of a period process, keep dry-bulb temperature 85 degree in kiln, wet-bulb temperature 70 degree, process 2 hours is replied in shrinkage, maintains 4 hours.
The present invention has following beneficial effect: the present invention is by measuring the dry-bulb temperature of wood to be dried and wet-bulb temperature and moisture content to be measured, according to moisture content to be measured, correctly carry out according to drying schedule, control the dry-bulb temperature of timber to be measured, wet-bulb temperature and lasting time, thus can seasoning defect drying defect be reduced, make final product reach Eligibility requirements.
Detailed description of the invention
Below in conjunction with the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The invention provides a kind of drying means of rosewood, comprise the following steps: (1) carries out selection to rosewood, the sawn timber of different thickness should distinguish drying, during timber lazy weight one kiln, to allow drying property and the seeds that just moisture content is close are dry with kiln drying; (2) measure just moisture content, detect sawn timber and draw moisture content, the sawn timber of different water cut should distinguish drying; (3) stacking, should ensure that airstream in kiln rationally circulates, make full use of the capacity of kiln, prevent warp in wood and end check; (4) in kiln, place moisture content sample board, determine as requested to need the moisture content sample board with kiln desiccated wood, inspection moisture content; (5) temperature and humidity in temperature controller and humidity controller control dry kiln is adopted according to drying schedule.
As the embodiment that the present invention is concrete, the method for testing of moisture content comprises the following steps in described step (2): (1), supply water fully to sawn timber, its Bole moisture rate is reached or peak under access expansion state; (2), the trunk of sawn timber is divided into some trunk sections; (3), use instrument at the flank hole of trunk section, the diameter of boring is consistent with the probe of the degree of depth and TDR, and probe can all insert trunk section and contact is tight; (4), high accuracy balance measurement trunk section quality is utilized, and record, the i.e. weight in wet base of trunk section, TDR is utilized to carry out measurement of water ratio to it subsequently, measure 6 times, average as this measurement result and record, this is the measurement of water ratio value in this moment of trunk section.
Further, described in described step (5), the drying schedule of rosewood comprises:
(1) sawn timber the pre-heat treatment, is provided with dry bulb thermometer in kiln and wet bulb thermometer keeps dry-bulb temperature 65 degree in kiln, in wet-bulb temperature 45-53 degree, maintains 2 hours; (2), when measuring sawn timber in 30% moisture content stage, keep dry-bulb temperature 75 degree in kiln, wet-bulb temperature 60 degree, maintains 1 hour; (3), when measuring sawn timber in 20% moisture content stage, dry-bulb temperature 80 degree in protection kiln, wet-bulb temperature 65 degree, intermediate treatment 3-4 time, each maintenance 2 hours; (4), the sawn timber 8-12% moisture content stage, carry out end of a period process, keep dry-bulb temperature 85 degree in kiln, wet-bulb temperature 70 degree, process 2 hours is replied in shrinkage, maintains 4 hours.
The task of rosewood drying is exactly adjustment, controls the drying that the change of drying medium state parameter completes timber step by step.The hand control and automation that moisture content section examination drying schedule is widely used in rosewood dry technology process controls, and the caloic transmission rule drying schedule that it meets the drying of wood each stage substantially reaches average moisture content 8%-12%; Moisture content deviation 2%-3.5% on thickness; Drying uniformity ± 4%, stress-deviation≤3%.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. a drying means for rosewood, is characterized in that: comprise the following steps:
(1) carry out selection to rosewood, the sawn timber of different thickness should distinguish drying, during timber lazy weight one kiln, to allow drying property and the seeds that just moisture content is close are dry with kiln drying;
(2) measure just moisture content, detect sawn timber and draw moisture content, the sawn timber of different water cut should distinguish drying;
(3) stacking, should ensure that airstream in kiln rationally circulates, make full use of the capacity of kiln, prevent warp in wood and end check;
(4) in kiln, place moisture content sample board, determine as requested to need the moisture content sample board with kiln desiccated wood, inspection moisture content;
(5) temperature and humidity in temperature controller and humidity controller control dry kiln is adopted according to drying schedule.
2. the drying means of a kind of rosewood according to claim 1, is characterized in that: in described step (2), the method for testing of moisture content comprises the following steps:
(1), to sawn timber supply water fully, its Bole moisture rate is reached or peak under access expansion state;
(2), the trunk of sawn timber is divided into some trunk sections;
(3), use instrument at the flank hole of trunk section, the diameter of boring is consistent with the probe of the degree of depth and TDR, and probe can all insert trunk section and contact is tight;
(4), high accuracy balance measurement trunk section quality is utilized, and record, the i.e. weight in wet base of trunk section, TDR is utilized to carry out measurement of water ratio to it subsequently, measure 6 times, average as this measurement result and record, this is the measurement of water ratio value in this moment of trunk section.
3. the drying means of a kind of rosewood according to claim 1, is characterized in that: described in described step (5), the drying schedule of rosewood comprises:
(1) sawn timber the pre-heat treatment, is provided with dry bulb thermometer in kiln and wet bulb thermometer keeps dry-bulb temperature 65 degree in kiln, in wet-bulb temperature 45-53 degree, maintains 2 hours;
(2), when measuring sawn timber in 30% moisture content stage, keep dry-bulb temperature 75 degree in kiln, wet-bulb temperature 60 degree, maintains 1 hour;
(3), when measuring sawn timber in 20% moisture content stage, dry-bulb temperature 80 degree in protection kiln, wet-bulb temperature 65 degree, intermediate treatment 3-4 time, each maintenance 2 hours;
(4), the sawn timber 8-12% moisture content stage, carry out end of a period process, keep dry-bulb temperature 85 degree in kiln, wet-bulb temperature 70 degree, process 2 hours is replied in shrinkage, maintains 4 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510597899.4A CN105135872A (en) | 2015-09-18 | 2015-09-18 | Method for drying rosewood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510597899.4A CN105135872A (en) | 2015-09-18 | 2015-09-18 | Method for drying rosewood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105135872A true CN105135872A (en) | 2015-12-09 |
Family
ID=54721316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510597899.4A Pending CN105135872A (en) | 2015-09-18 | 2015-09-18 | Method for drying rosewood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105135872A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106369938A (en) * | 2016-11-07 | 2017-02-01 | 广西南宁侨盛木业有限责任公司 | Drying method for fast-growing eucalyptus sawn timber |
| CN115507624A (en) * | 2022-08-25 | 2022-12-23 | 宜昌金宝乐器制造有限公司 | Mildew-proof energy-saving drying device and method for beech sawn timber for instrument |
| CN116061280A (en) * | 2022-11-16 | 2023-05-05 | 成都市绿色快线环保科技有限公司 | Method, device and system for determining initial running mode of quenching and tempering bin |
-
2015
- 2015-09-18 CN CN201510597899.4A patent/CN105135872A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106369938A (en) * | 2016-11-07 | 2017-02-01 | 广西南宁侨盛木业有限责任公司 | Drying method for fast-growing eucalyptus sawn timber |
| CN115507624A (en) * | 2022-08-25 | 2022-12-23 | 宜昌金宝乐器制造有限公司 | Mildew-proof energy-saving drying device and method for beech sawn timber for instrument |
| CN115507624B (en) * | 2022-08-25 | 2023-11-07 | 宜昌金宝乐器制造有限公司 | Mildew-proof energy-saving drying device and method for beech sawn timber for musical instrument |
| CN116061280A (en) * | 2022-11-16 | 2023-05-05 | 成都市绿色快线环保科技有限公司 | Method, device and system for determining initial running mode of quenching and tempering bin |
| CN116061280B (en) * | 2022-11-16 | 2024-03-12 | 成都市绿色快线环保科技有限公司 | Method, device and system for determining initial running mode of quenching and tempering bin |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Feng et al. | Hygric properties of porous building materials: Analysis of measurement repeatability and reproducibility | |
| CN105135872A (en) | Method for drying rosewood | |
| CN108802352A (en) | Measurement of water-content coefficient method and method for drying wood in timber drying | |
| CN110567836A (en) | method and system for rapidly checking and determining tobacco shred online moisture meter | |
| CN103760061A (en) | Evaluation method of humidity preservation property of cigarette | |
| CN103776720B (en) | A kind of evaluation method of cigarette raw material humid keeping performance | |
| CN107348021A (en) | A kind of control method of the vexed yellow degree of yellow tea based on aberration system | |
| CN109740293A (en) | The amendment value calculating method of moisture content of cut tobaccos after a kind of fire-cured tobacco type dries | |
| JP2002086407A (en) | Method for artificially drying lumber and apparatus for drying lumber | |
| CN106225969B (en) | A kind of timber drying stress appraisal method for lumber quality control | |
| CN103454202B (en) | A kind of method of testing of the specific surface area of gathering materials of asphalt | |
| CN104132865A (en) | Method for predicting density of wood of loblolly pine by utilizing near-infrared spectrum technology | |
| Junior et al. | Application of non-symmetrical drying tests for assessment of drying behaviour of ntholo (Pseudolachnostylis maprounaefolia PAX) | |
| Korkut et al. | The transverse thermal conductivity coefficients of wild cherry wood heat-treated using the thermowood method. | |
| Zongying et al. | Stress characteristics and stress reversal mechanism of white birch (Betula platyphylla) disks under different drying conditions | |
| Bailly et al. | Numerical evaluation of airtightness measurement protocols | |
| Veizović et al. | Drying quality and colour of subfossil oak from central Serbia | |
| CN209246602U (en) | A kind of test sample drying box for food inspection | |
| HAN et al. | Moisture content change of Korean red pine logs during air drying: II. Prediction of moisture content change of Korean red pine logs under different air drying conditions | |
| CN201828106U (en) | Fast dryer for macroporous core sample on asphalt pavement for drainage | |
| Milić et al. | Oscillation drying of beech timber–initial experiments | |
| Tanesi et al. | Ruggedness study on the AASHTO T 336 coefficient of thermal expansion of concrete test method | |
| Toba et al. | Temporal Changes in Strain Condition on All Lateral Surfaces during Pretreatment before Timber Drying. | |
| Turkulin et al. | Microtensile testing of wood–influence of material properties, exposure and testing conditions on analysis of photodegradation | |
| Liu et al. | Equilibrium moisture content under vacuum conditions |
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 |
Application publication date: 20151209 |
|
| RJ01 | Rejection of invention patent application after publication |