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Micro-pressure superheated steam wood drying device and using method

A superheated steam, wood drying technology, applied in wood drying, drying gas arrangement, drying solid materials, etc., can solve the problems of difficult to grasp the drying end point and inability to accurately detect the moisture content of the wood drying process.

Active Publication Date: 2019-07-09
TAOJIANG HONGSEN WOOD IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the fact that the existing wood drying superheated steam device cannot accurately detect the moisture content in the wood drying process, the drying end point is difficult to grasp, and the establishment of the drying standard mainly depends on the lack of experience, the present invention provides a device suitable for wood micro-pressure superheated steam drying Device and method of use, the device and method can be used to dynamically and accurately detect the moisture content in the wood drying process, determine the drying end point, and scientifically formulate the wood micro-pressure superheated steam drying benchmark

Method used

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  • Micro-pressure superheated steam wood drying device and using method

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Embodiment 1

[0035] Such as Figure 1 to Figure 3As shown, the first embodiment of the micro-pressure superheated steam wood drying method of the present invention is carried out with the above-mentioned micro-pressure superheated steam wood drying device, comprising the following steps:

[0036] S1: Test material handling and placement: nail a wood screw on the side of the wood test piece at a distance of 50 mm from the end, and connect them with thin iron wires, hang them on the quality online monitoring component 2 so that they are just located at the steam generator Above the component 5, connect the wood test piece with the temperature online monitoring component 3;

[0037] S2: Device startup and temperature rise: Turn on the main power supply of the device, start the quality online monitoring component 2 and the temperature online monitoring component 3, inject 1L of distilled water into the steam generating part 5, start the steam generating part 5 and the fan 6, and start the temp...

Embodiment 2

[0049] Take the black walnut material with an initial moisture content of 76% as an example:

[0050] Handling and placement of the test material: nail a wood screw into the side of the black walnut test material with a specification of 320mm (length) × 120mm (width) × 30mm (thickness) and an initial moisture content of 76% at a position 50mm from the end, and Connect it with a suspension 23 and hang it on the mass sensor 21; drill optical fiber pre-embedded holes 33 with a diameter of 1 mm at the geometric center of the end face of the test piece and a position 2 mm away from the surface, and connect the two optical fiber sensors 32 They are respectively built into the two optical fiber pre-embedded holes 33 for real-time monitoring of the temperature changes of the surface layer and the core layer of the wood specimen during the drying process.

[0051] Device startup and temperature rise: turn on the main power supply of the device, start the quality online monitoring compo...

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Abstract

The invention provides a micro-pressure superheated-steam timber drying device and a using method. The device comprises a drying case body, a quality online monitoring assembly, a temperature online monitoring assembly, a temperature control part, a steam generating part, a draught fan and a gas exhaust assembly; and the quality online monitoring assembly is mounted on the drying case body and extends to an inner cavity of the drying case body to hang timber, the temperature online monitoring assembly is mounted on the drying case body and connected with the timber, the temperature control part is mounted on the drying case body, the steam generating part and the draught fan are mounted in the inner cavity of the drying case body, and the gas exhaust assembly is located at the side portion of the drying case body and communicates with the top of the drying case body. The method comprises the following steps of S1, tested timber is treated and placed; S2, the device is started and heated up; S3 the device is cooled and closed; and S4, the tested timber is taken out of a case. The micro-pressure superheated-steam timber drying device and the using method have the advantages that the structure is simple and compact, high efficiency and high quality are achieved, the energy is saved and the consumption is low, operating is simple, the moisture content in the timber drying process can be detected dynamically and precisely, and the drying terminal point can be determined.

Description

technical field [0001] The invention mainly relates to wood drying technology, in particular to a micro-pressure superheated steam wood drying device and its use method. Background technique [0002] The conventional drying method using hot and humid air as the drying medium accounts for more than 80% of the total wood drying in my country. However, conventional drying has disadvantages such as long cycle, high drying energy consumption, and waste gas emission during the drying process. Micro-pressure superheated steam drying not only has the advantages of high drying efficiency, good drying quality, energy saving and environmental protection of superheated steam drying, but also the internal micro-pressure can realize the self-discharge of humid air, and can effectively prevent external air from entering the drying equipment and keep the drying equipment Oxygen-free environment, which has greater advantages in improving the quality of wood drying, saving wood, and improvin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F26B21/10F26B21/00F26B25/22
CPCF26B21/005F26B21/10F26B25/22F26B2210/16
Inventor 贺霞李贤军牟群英刘壮青张燕来郝晓峰张明龙黄琼涛胡进波
Owner TAOJIANG HONGSEN WOOD IND