深海底栖生物分离装置流道解堵

Flow pipe's plug-removing of benthic meiobenthos separating device

为了解决深海小型底栖生物样品分离装置的毛细孔堵塞问题,提出了一种适合于其结构和堵塞特点的旋转射流解堵方法.运用计算流体力学(CFD)软件包对分离装置流道进行了建模与仿真,给出了分离装置中毛细孔附近的速度场分布并分析了堵塞原因,比较了高压射流和流式细胞仪的解堵机理.基于上述分析改进了底栖生物分离装置流道样机,结果表明,旋转射流解堵方法具有结构简单、解堵效果好等特点,连续工作未出现堵死情况,是毛细孔解堵的一种有效方法.

A rotating liquid jet method based on the cramming and structure characteristics of porous was proposed to resolve the cramming problem in the design of benthic meiobenthos separating device, Applying computational fluid dynamics （CFD） software to simulate the flow pipe of the separating device revealed the velocity field around the porous capillary and the reasons causative for the cramming of the porous capillary were analyzed. The plug-removal mechanisms of high pressure water jet and flow cytometer were compared. Application of the improved test specimen machine based on the plug removal effect of high pressure and stirring motion showed that it was effective for plug-removal and that there was no stop ping up case occurring during work. The rotating liquid jet method characterized by simple structure and good plug-removal effect is one of the good methods for porous capillary plug-removal.