Veneer drying system

Abstract

The invention discloses a veneer drying system. The veneer drying system comprises a heat exchange device, a gas inlet chamber, a veneer frame set and an exhaust chamber. The heat exchange device heats drying gas in a cold state through a heat source. The gas inlet chamber guides the drying gas heated by the heat exchange device into the veneer frame set through an air guide device. The veneer frame set is formed by stacking N veneers and N+1 spacer devices at intervals. A crack ventilation channel is formed between every two adjacent veneers through the corresponding spacer device, and the drying gas is input into the crack ventilation channels to dry the veneers. The exhaust chamber exhausts wet and hot drying gas output by the veneer frame set. According to the veneer drying system, themultiple veneers are uprightly and oppositely fixed through the spacer devices, and the advantages that air passing is uniform, air resistance is small, drying efficiency is high, energy consumptionis low, and no deformation is generated in the drying process can be achieved; and compared with traditional veneer drying equipment, the production under the same volume can be improved by 100 timesor above.

Description

technical field [0001] The invention relates to the technical field of wood drying, in particular to a veneer drying system. Background technique [0002] Multi-layer boards have many advantages such as small deformation, high structural strength, and high environmental protection level, and the production of multi-layer boards has low requirements for raw materials, sufficient supply of raw materials, and low production costs. Therefore, it enjoys a large market in domestic wooden boards. share. [0003] Veneer drying is an important process for making multi-layer boards and templates. The veneer is a thin plate with a thickness of 1.5-2.2mm that is peeled off from the wood. The moisture content of the veneer is very high, usually between 30-80%. During the period, the moisture content of some wood is even as high as 80%, so it must be dried before pressing. However, due to the high water content of the veneer, it is difficult to dry, and it is easy to deform after being ...

AI Technical Summary

Problems solved by technology

The main disadvantages of this drying method are: large footprint and low drying efficiency

[0004] The applicant once tried to put the veneers upright, and each veneer was separated by a screen to maintain ventilation, and then dried by blowing hot and strong wind. Although the volume can be greatly reduced, because the longitude and latitude of the screen are staggered, it is extremely difficult. The ground affects the air volume, so the drying effect is not good due to too much resistance, but the screen has a certain effect on fixing the veneer without deformation

Therefore, at present, most of them still use the method of laying veneer tiles up and down for drying, which not only covers an area 100 times larger, but also consumes high energy consumption. The thermal efficiency is only about 15%, which results in serious energy waste and low production speed.

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