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目前,国内木材干燥室的进排气系统大多采用水泥砂浆浇铸。由于它长期受水蒸汽、木酸及不等温的作用,且不能经常的作防腐处理(工作场地狭小不易涂刷),所以水泥砂浆易风化脱落,使进排气系统堵塞,影响湿空气的排除和干空气的补充,造成木材干燥效果不好,这不但影响生产任务的完成,而且降低了木材利用率。现已有一些单位在新建或维修木材干燥室的进排气系统时采用铸石管作材料,经过多年使用,效果较好。现介绍如下,供参考。
At present, most of the domestic wood drying room intake and exhaust systems are cast using cement mortar. Because of its long-term effects of water vapor, wood acids and non-isothermal, and can not always be used for anti-corrosion treatment (small and difficult to brush the work site), so the cement mortar is easily weathered off, so that the intake and exhaust system is blocked, affecting the exclusion of wet air The addition of dry air results in poor drying of the wood. This not only affects the completion of production tasks, but also reduces wood utilization. There are some units that use cast-in-cement pipes as materials for building or maintaining the air intake and exhaust systems of wood drying rooms. After years of use, the effect is good. The introduction is as follows, for reference.