Wood drier

Abstract

The invention discloses a timber drying machine. The technical proposal is that the timber drying machine comprises a sealable pressure vessel provided with a door, wherein, the pressure vessel is provided with an internal separator board which divides the pressure vessel into a drying chamber and a heat exchange chamber which are communicated with each other; a heater is arranged in the heat exchange chamber; a circulating fan is arranged between the drying chamber and the heat exchange chamber; the pressure vessel is provided with a safety valve which is communicated with the exterior; the pressure vessel is also provided with a cooling device. The invention overcomes the deficiencies of the prior art that the energy consumption of the prior timber drying devices is high, atmospheric pressure high-temperature drying easily lead to higher level of moisture gradient and thus easy cracking and shrinkage, and the like. The invention provides a timber drying machine, which is used for drying or high temperature heat treatment in high-temperature and atmospheric environment, does not easily lead to higher level of moisture gradient and stress of timber, and ensures the drying quality and efficiency of timber.

Description

【Technical field】 [0001] The invention relates to a wood drying device, more specifically a wood drying machine. 【Background technique】 [0002] At present, the known wood drying methods can be divided into three categories: mechanical drying, chemical drying and thermal drying, among which the thermal drying method is the most commonly used. A conventional wood dryer is composed of a shell, a heater, a circulating fan, and an intake and exhaust device. The general drying process is to stack the wet wood reasonably first, then put it into the shell of the dryer, and then through the mutual cooperation of the internal equipment of the dryer, an artificial environment is created to make the wood change from wet to dry. Conventional drying usually uses humid air of 0.1MPa under normal pressure as the drying medium. During the drying process, whether it is the water evaporated from the wood, or according to different drying process stages: preheating treatment, intermediate tre...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the disadvantages of high energy consumption of conventional wood drying equipment in the prior art, and that drying under normal pressure and high temperature easily leads to a large moisture content gradient and thus easily produces drying defects such as cracking and shrinkage, and provides a It is a wood drying machine that can dry wood under a pressure environment higher than normal pressure or heat treatment at high temperature, which is not easy to cause a large moisture content gradient and stress in wood, and ensures the drying quality and efficiency of wood.

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