Method and device for drying wood

A wood drying and drying device technology, applied in the direction of drying solid materials, method combination to dry solid materials, drying, etc., can solve the problems of reducing the partial pressure gradient, unevenness and bursting of wood moisture content, and achieve the elimination of unevenness. The effect of distribution, small reduction rate of wood and small investment

Inactive Publication Date: 2011-11-23
于玺泽
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a method for improving wood quality and realizing rapid drying of wood, which can greatly reduce the partial pressure gradient of wood moisture content, effectively reduce or eliminate local unevenness of wood moisture The problem of distribution can improve the flexibility of wood, reduce the dry shrinkage rate, and solve the problem of bursting and deformation caused by changes in wood moisture content

Method used

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  • Method and device for drying wood
  • Method and device for drying wood
  • Method and device for drying wood

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Wood drying method is characterized in that comprising the following steps carried out in sequence:

[0038] The first step: process the wood into a wood section of the required size, the length of the wood section is 200mm, and the cross-sectional area of ​​the wood section is 20 square centimeters;

[0039] The second step: put the wood section in the drying device and seal the drying device;

[0040] Step 3: Start the heating device with a fan to heat the drying device to make the temperature reach 65°C and keep it for 20 minutes to 2 hours;

[0041] Step 4: Start the vacuum device, vacuum the drying device, make the absolute pressure negative 0.098 MPa, and keep it for 20 minutes to 2 hours;

[0042] Step 5: Start the water discharge device;

[0043] Step 6: Turn off the water drain and remove the wood section.

Embodiment 2

[0045] Wood drying method is characterized in that comprising the following steps carried out in sequence:

[0046] The first step: process the wood into a wood section of the required size, the length of the wood section is 2000mm, and the cross-sectional area of ​​the wood section is 1 square meter;

[0047] The second step: put the wood section in the drying device and seal the drying device;

[0048] Step 3: Start the heating device with a fan, heat the drying device, make the temperature reach 80°C, and keep it for 20 minutes to 2 hours;

[0049] Step 4: Start the vacuuming device, vacuumize the drying device, make the absolute pressure negative 0.05 MPa, and keep it for 20 minutes to 2 hours;

[0050] Step 5: Start the water discharge device;

[0051] Step 6: Turn off the water drain and remove the wood section.

Embodiment 3

[0053] Wood drying method is characterized in that comprising the following steps carried out in sequence:

[0054] The first step: process the wood into a wood section of the required size, the length of the wood section is 5000mm, and the cross-sectional area of ​​the wood section is 2 square meters;

[0055] The second step: put the wood section in the drying device and seal the drying device;

[0056] Step 3: Start the heating device with a fan, heat the drying device, make the temperature reach 70°C, and keep it for 20 minutes to 2 hours;

[0057] Step 4: Start the vacuum device, vacuum the drying device, make the absolute pressure negative 0.095 MPa, and keep it for 20 minutes to 2 hours;

[0058] Step 5: Start the water discharge device;

[0059] Step 6: Turn off the water drain and remove the wood section.

[0060] The wood drying method described in any of the above embodiments is characterized in that the length of the wood segment in the first step is 200mm-5000m...

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Abstract

The invention relates to a method for drying wood. The method is characterized by sequentially comprising the steps of: processing wood into wood segments in required size, placing the wood segments in a drying device and sealing the drying device; starting up a heating device, heating the drying device to ensure that a temperature reaches 65-80 DEG C and is kept for 20 minutes to 2 hours; starting up a vacuumizing device, vacuumizing the drying device to ensure that the absolute pressure intensity is enabled to be within the range of not less than -0.098 MPa and not greater than -0.05 MPa and is kept for 20 minutes to 2 hours; starting up a water-discharging device to pump out water; and turning off the heating device, the vacuumizing device and the water-discharging device and taking out of the wood segments. According to the method, resin membranes inside the wood are damaged for realizing quick drying, the water permeability and the air permeability of the wood are improved and the flexibility is increased. The method provided by the invention has the advantages of simplicity, short drying time, high efficiency, energy saving, cost reduction, low wood degrading rate, and the like. The invention further discloses a drying device.

Description

technical field [0001] The invention relates to a method for improving wood quality and realizing wood drying; especially a method for drying wood by destroying resin conjunctiva inside the wood, and the invention also discloses a drying device adopting the method. Background technique [0002] Wood drying technology refers to the process in which people use various technical methods to discharge the moisture in wood through evaporation and vaporization under the action of heat. [0003] Existing methods include natural drying, conventional normal temperature drying, steam drying, dehumidification drying, vacuum drying, high frequency drying, microwave drying, etc. A hot air circulation drying box with a volume of 20 cubic meters, the drying cycle is between 20 and 40 days, only consumes more than one ton of coal, consumes more than 500 degrees of electricity, and the wood reduction rate is 10%, plus labor costs. The drying process alone costs more than 200 yuan per cubic m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B7/00
Inventor 于玺泽
Owner 于玺泽
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