Micro-pressure self-draining wood high-efficiency energy-saving drying device and drying method

Abstract

The invention discloses a micro-pressure self-draining wood high-efficiency energy-saving drying device and a drying method. The device includes a kiln body, the inner cavity of the kiln body is provided with a wood drying area, and the kiln body is equipped with a fan assembly above the wood drying area. Heating components and steaming components, the kiln body is equipped with condensed water circulation components on the side of the wood drying area, and the kiln body is equipped with an exhaust component connected to the wood drying area on the side, and the drying device also includes built-in wood temperature and humidity sensor. The method includes the following steps: S1: wood enters the kiln; S2: heating and drying; S3: cooling treatment; S4: high-humidity balance treatment; S5: wood exiting the kiln. The invention has the advantages of simple and compact structure, high efficiency and high quality, energy saving and low consumption, and simple operation.

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...

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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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