双级活塞推料离心机筛网的优化设计  

Optimization design of sieve in two-stage piston pusher centrifuge

作　　者：马新龙[1] 谭蔚[1] 刘丽艳[1] 张永政 沙恩典 陶渊卿 

机构地区：[1]天津大学化工学院,天津300072 [2]浙江轻机实业有限公司,浙江杭州311401

出　　处：《现代化工》2014年第2期152-155,共4页Modern Chemical Industry

基　　金：长江学者和创新团队发展计划资助项目(IRT0936)

摘　　要：针对现有推料离心机筛网对滤液流动阻力过大的问题,采用计算流体力学（CFD）软件FLUENT模拟研究了筛网缝隙内的流体运动轨迹,探究了筛网倾角对降低滤液流动阻力的影响,进而得到了不同离心机转速下最优的筛网倾角.结果表明,带倾角的筛网可以有效降低其对滤液的流动阻力,随着离心机转速的增加,滤液和夹带的固体颗粒更易于贴着左侧壁面排出筛网缝隙,最优筛网倾角也随着转速的变化而变化.1 000～1 100 r/min转速下,倾角7°时的筛网最优；1 200～1 300 r/min转速下,倾角8°时的筛网最优.To solve the problem that the oversized resistance of sieve to filtrate,the computational fluid dynamics （CFD） software FLUENT is used to simulate the motion trajectory of fluid in sieve,explore the influence of sieve angle on reduction of the resistance of sieve to filtrate,getting the best angle of sieve angle.The result shows that the inclined sieve is an effective method to reduce the flow resistance.With the increase of rotational speed,more and more filtrate and entrained particles concentrated on the left side wall of sieve throw away from the outlet,and hence the best inclined sieve changes with rotational speed.At speed of 1 000-1 100 r/min,7°inclined sieve is the best for reduction of the flow resistance.At speed of 1 200-1 300 r/min,8° inclined sieve is the best for reduction of the flow resistance.

关 键 词：双级活塞推料离心机 筛网 CFD 阻力 

分 类 号：TQ051.8[化学工程]