Multi-cavity and multi-port quick-change wood microwave pretreatment device and its application method

Abstract

The invention discloses a multi-cavity multi-port quickly-replacing wood microwave pretreatment device and an application method thereof. The device comprises a universal working table, temperature detection modules and a plurality of microwave source and resonant cavity modules. The microwave source and resonant cavity modules comprise resonant cavity shells and microwave sources arranged on the peripheral sides of the resonant cavity shells. The resonant cavity shells are internally provided with resonant cavities for containing treated wood. The microwave sources communicate with the corresponding resonant cavities through feed-in waveguides. The temperature detection modules are mounted on the corresponding resonant cavity shells and extend into the corresponding resonant cavities. The resonant cavity shells are mounted on the universal working table. The method comprises the following steps of S1 manufacturing of test pieces, S2 drilling and weighing of the test pieces, S3 mounting of the microwave source and resonant cavity modules, S4 mounting of the test pieces, S5 microwave pretreatment and S6 completion of treatment. The multi-cavity multi-port quickly-replacing wood microwave pretreatment device has the advantages of being simple and reliable in structure, convenient to operate and capable of achieving the controllability and adjustability of pretreatment parameters and wood physical property parameters.

Description

technical field [0001] The invention mainly relates to the technical field of microwave pretreatment of wood, in particular to a multi-cavity and multi-port quick-change wood microwave pretreatment device and a use method thereof. Background technique [0002] Because of its immediacy, integrity, selectivity and high efficiency, microwave heating has been widely used in the fields of material drying and heating, chemical reaction and synthesis, biological sterilization and insecticide. In recent years, high-intensity microwave pretreatment has appeared in the wood industry as a new wood modification technology. The energy makes the water change from liquid to gas, thereby producing phase change and gas thermal pressure effect, effectively destroying the internal structure of wood, forming micro or macro cracks inside wood, thereby forming new fluid channels, improving the fluid migration ability inside wood, It creates extremely favorable preconditions for the later drying ...

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Problems solved by technology

[0003] However, further studies at home and abroad have found that after high-intensity microwave pretreatment of wood, the distribution of micro and macro pores inside it is very uneven, which brings great difficulties to the post-impregnation treatment of wood and the preparation of high-performance new materials. , which directly led to the inability of the technology to achieve industrial application

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