Micropressure self-discharge efficient and energy-saving wood drying device, and drying method

Abstract

The invention discloses a micropressure self-discharge efficient and energy-saving wood drying device, and a drying method. The device comprises a kiln body, wherein a wood drying area is formed in the inner cavity of the kiln body; a fan assembly, a heating assembly and a steam-injection assembly are installed in the kiln body and above the wood drying area; a condensed water circulation assembly is installed in the kiln body and at the side of the wood drying area; and an air discharge assembly communicating with the wood drying area is installed in the kiln body and at the side part. The drying device further comprises a temperature-humidity sensor embedded in wood. The method comprises the following steps: S1, conveying wood into a kiln; S2, heating and drying; S3, carrying out cooling treatment; S4, carrying out high-humidity balance treatment; and S5, taking the wood out of the kiln. The device disclosed by the invention has the advantages of being simple and compact in structure, efficient and high in quality, energy-saving and low-consumption, and simple to operate.

Description

technical field [0001] The invention mainly relates to wood drying technology, in particular to a micro-pressure self-draining type high-efficiency and energy-saving wood drying device and drying method. Background technique [0002] Drying is an important process in wood processing, and the energy consumption of drying accounts for about 40%-70% of the total energy consumption of wood processing. Correct and reasonable drying treatment of wood is not only the key to ensure the quality of wood products, but also an important means of rational utilization and saving of wood. [0003] At present, in production, the more common wood drying methods include conventional drying, high temperature drying, dehumidification drying, solar drying, vacuum drying, high frequency and microwave drying, etc. Among them, conventional drying is the most widely used in production, and its proportion exceeds 80%. However, conventional drying has defects such as long drying cycle, large drying e...

AI Technical Summary

Problems solved by technology

Among them, conventional drying is the most widely used in production, and its proportion exceeds 80%. However, conventional drying has defects such as long drying cycle, large drying energy consumption, and exhaust gas emissions during the drying process; high-temperature drying speed is fast and the cycle is short, but it is prone to drying defects. , the color of the drying material becomes darker, and it is not easy to process; dehumidification drying has the advantages of good drying effect, environmental protection and pollution-free, but its drying time is long, power consumption and drying cost are high; high-frequency drying and microwave drying have fast drying speed, The temperature field in the wood is uniform, the drying stress is small, and the drying quality is good. However, these two drying methods require large investment, high power consumption and drying costs. At the same time, if the power is too large or the drying process is not properly controlled, internal cracking and carbonization are likely to occur.

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