Preprocessing method for shortening wood drying time

Abstract

A preprocessing method for shortening wood drying time includes the following steps: 1 selecting a wood plate to be dried; 2 adjusting a device: the device is a group of or multiple groups of roller presses which are sequentially ranked, the distance between upper press rollers and lower press rollers of each group of roller presses and press roller speed are adjusted according to set process parameters so as to lead the press rollers to have a set compression amount to the wood plate; 3 preprocessing the wood plate: the roller presses are started up, the wood plate is flatly arranged between an upper press roller and a lower press roller, the wood plate is led to pass one group of roller pressing or multiple groups of continuous roller pressing for one time or repeated many times from the input end of the roller presses to the output end of the roller presses by aid of friction of the surfaces of the press rollers or external force effect; and 4 drying the roller pressed wood plate. The preprocessing method is used for preprocessing of woods before drying, can shorten wood drying time of solid wood plates containing certain moisture, saves energy resources, is simple in structure and convenient to operate in devices, is safe to use and can reduce production cost.

Description

technical field [0001] The invention relates to a pretreatment method for shortening wood drying time, and belongs to the technical field of solid wood processing in the wood industry. Background technique [0002] During the growth of trees, a certain amount of water is stored inside the wood, and it is necessary to reduce the water content to the required range through the drying process in wood processing. Wood drying is the core technology in the wood industry and a key production link in the production of solid wood products; conventional wood drying takes a long time, ranging from a few days, a dozen days, to dozens of days, and consumes a lot of energy. 50%-70% of the total energy consumption of the link. On the premise of ensuring the drying quality, the research work to shorten the drying time is very necessary and urgent. [0003] In order to shorten the running time of wood drying, research results at home and abroad focus on microwave pretreatment and blasting ...

AI Technical Summary

Problems solved by technology

The described wood microwave pretreatment and blasting pretreatment methods can both achieve corresponding effects, but the microwave pretreatment method needs to consume a large amount of energy, and the blasting pretreatment method requires special pressure-resistant equipment, resulting in an increase in the cost of the pretreatment process. It is difficult to popularize in actual production, and the market is looking forward to the emergence of wood drying pretreatment technology with simple method, convenient operation and low cost

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