木工聚脲喷枪内部混合室最佳错位比仿真研究

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中图分类号：TQ639.3 文献标识码：A 文章编号：2095-2953（2025）05-0038-05

Simulation Study on the Optimal Displacement Ratio of the Internal Mixing Chamber of a Woodworking Polyurea Spray Gun

LI Bin，WANG Lu-ping

（Collge of Mechanicaland Electrical Engineering，NortheastForestry University，Harbin Heilongjiang15O040，China）

Abstract：To investigate the optimal structure of the interal mixing chamber of woodworking polyurea spray guns and explore the best mixing method，numerical simulations were conducted using Fluent software.Parameters such as the mixingflow field，mixing intensity，turbulence intensity，and fluid velocity in mixing chambers with diferentoffset ratios were examined. The results indicated that the mixing chamber with a 0% offset ratio achieves complete impact flow mixing，while the chamber with a 100% offset ratio operates with complete swirling flow mixing. For offset ratios at intermediate values，both impact flow mixing and swirling flow mixing occur.The mixing intensity in the 100% offset ratio chamber first achieves uniformity in the axis direction.Additionally，it features the highest fluid velocity anda more uniform turbulence intensity distribution.Therefore，when designing the mixing chamber structure of woodworking polyurea spray guns， a 100% offset ratio chamber should be selected to achieve the best mixing effect. Key words： polyurea spray gun； mixing chamber;displacement mixing; numerical simulation

在木制家具加工中，喷涂外表面是一项很重要的工作，关系到木材家具外表面的防护性能，从而影响木制家具的整体质量。（剩余4892字）