A compression drying device used in timber modification

Abstract

The invention discloses an adjustable heat air circulation timber drying and compression device and is used for compressing and drying impregnated timbers. The device comprises a sealed drying cabinet, at the periphery of which is a framed stander the upper part of which is provided with a pressure oil cylinder, a guide rod, a pressure plate, a displacement sensor, etc; wherein, the drying cabinet is internally provided with a timber loading car and a track; a metal template is arranged between the upper layer and the lower layer of the timbers; a variable frequency control fan and a heat exchanger are arranged an external end of the sealed drying cabinet; a variable frequency adjustable fan is adopted to force the heat air to circulate to heat. After saw into plates or squared timbers with specific dimensions, the impregnated timbers are loaded into a material cabinet according to specified layers, and the material cabinet is pushed into the drying cabinet along the guide rail, and the drying cabinet is closed, and the fan and the heat exchanger are turned on and the timbers in the material cabinet are heated to 90 DEG C; the pressure oil cylinder is turned on to add pressure, and the guide rod runs downward to drive the pressure plate to press the topmost layer of timber. According to the process specification of the timber drying and compression, a temperature and humidity control sensor and a transducer are used for adjusting ventilation and heating quantity in different drying and compression stages, and an air intake adjusting plate and an air returning adjusting plate are used for regulating the wind speed, and the displacement sensor is adopted to control the compression quantity and finally the ending of the drying process is judged through the temperature andhumidity control sensor.

Description

technical field [0001] The device of the invention belongs to adjustable hot air circulation wood drying and compression equipment, and belongs to the field of wood drying and processing. Background technique [0002] Wood compaction is a method to increase the density and strength of soft wood through the process of softening, compressing, and setting, so as to achieve the purpose of wood strengthening. Ordinary compressed wood is made by subjecting wood to hydrothermal treatment (heating, humidification, steaming), increasing the plasticity of wood, softening wood, and then compressing. The compressed wood produced by this technical process has a large thickness rebound in a certain external environment (temperature, humidity), poor dimensional stability, and high pressure when the wood is compressed, which is easy to damage the structure of the wood. The technical process of wood surface densification treatment is to soak the surface part of the sawn timber in liquid ...

AI Technical Summary

Problems solved by technology

[0004] At present, the usual wood drying equipment does not have the function of hot pressing. Patent 200620127136 and patent 200620127137 report that the large-format continuous transmission breathing hot pressing dryer has both hot pressing and drying functions, but this drying equipment is mainly used for plywood or Is a large format rotary cutting board

Another kind of equipment is wood drying anti-deformation device (patent number: 97214067), which mainly solves the warping problem in wood drying, and does not have the effect of compression and compaction

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