新型真空耙式干燥机优化设计与蒸发性能研究  

OPTIMIZATION DESIGN AND EVAPORATION PERFORMANCE STUDY OF A NEW VACUUM RAKE DRYER

作　　者：林海波[1] 王国君 曹博涵 何才富 徐安 Lin Haibo;Wang Guojun;Cao Bohan;He Caifu;Xu An(School of Mechanical and Electrical Engineering,Taizhou Vocational and Technical College,Taizhou,Zhejiang,318000;Institute of Process Control and Equipment Provincial Enterprise,Zhejiang Chengxin Medical and Chemical Equipment Co.,Ltd.,Taizhou,Zhejiang,318000;School of Mechanical Engineering,Zhejiang University of Technology,Hangzhou,Zhejiang,310023)

机构地区：[1]台州职业技术学院机电工程学院,浙江台州318000 [2]浙江诚信医化设备有限公司过程控制与装备省级企业研究院,浙江台州318000 [3]浙江工业大学机械工程学院,杭州310023

出　　处：《石油化工设备技术》2024年第3期52-55,I0003,I0004,共6页Petrochemical Equipment Technology

基　　金：台州市科技局(批准号:22gya12)资助的课题;椒江区科技事业中心(批准号:182019)资助的课题;台州市委人才办(批准号:台人才领[2020]4号)资助的课题;浙江省教育厅(批准号:jg20230239)资助的课题。

摘　　要：针对现有耙式干燥机运行中存在的蒸汽消耗大、干燥效率不高、传热不均匀等技术难题,以及筒内残余滤渣层造成较大的物料损失,难以满足安全、环保和GMP(良好生产规范)要求等技术难点,通过查阅文献并进行大量的实验研究,设计了一种高效、节能耙式干燥机,自主提出一种轻量化的内、外筒与浆叶复合加热搅拌轴结构。该结构中心转轴、连接轴和搅拌桨叶均为空心设计,桨叶刮擦部距离筒壁间隙3~5 mm,达到了所需搅拌动力显著降低、换热面积大、传热效率高的效果,实现了不留残余物料、降低生产成本、保证人和物料的完全隔离的目的,可满足制药行业的GMP要求。实际试验研究结果表明,干化减量比例达19.9%,蒸汽单耗32.8%,能耗明显减少,说明该方法与设备具有较高的推广应用价值。Theexisting technical challenges of high steam consumption,low drying efficiency,and uneven heat transfer in the operation of rake dryers,as well as large material loss caused by the residual filter residue layer inside the cylinder make it difficult to meet safety,environmental protection,and GMP requirements.Aiming at these technical difficulties,an efficient and energy-saving rake dryer was designed,and a lightweight internal and external cylinder and blade composite heating stirring shaft structure was independently proposedafter literature review and extensive experimental research.The central rotating shaft,connecting shaft,and stirring blade were all hollow in design with a clearance of 3-5 mm between the scraping part of the blade and the cylinder wall.The required stirring power has been significantly reduced;the heat exchange area is large and the heat transfer efficiency is high,achieving the goals of no residual materials,reducing production costs and ensuring complete isolation of people and materials.This can meet the GMP requirements of the pharmaceutical industry.The actual experimental research results show that the drying reduction ratio reaches 19.9%;the steam unit consumption is 32.8%and the energy consumption is significantly reduced.It indicates that this method and equipment are of high value for promotion and application.

关 键 词：真空耙式干燥机 复合加热 搅拌装置 节能 GMP 

分 类 号：TH122[机械工程—机械设计及理论]