Abstract: A pulse inverse blow filter bag dust collector is a dust removal device where compressed airflow is instantaneously switched through an electromagnetic pulse valve and then sprayed into a filter bag through an injection pipe, and finally the resulting counterblast causes the filter bag to swell up, thus achieving dust removal. The dust collector can allow continuous, complete dust removal. As a time saving and efficient tool, it has recently been applied in various areas of spray drying production such as dairy products, medical and healthcare products and further processed corn and soybean products. However, there are some problems in its applications. This paper describes the design and application of a pulse inverse blow filter bag dust collector in MGYP01-500 type vertical pressure spray drying system for milk powder production. Besides, some attention points for its application are included.

Key words: pulse inverse blow filter bag dust collector；design；spray drying production；attention points

摘要： 脉冲反吹滤袋捕粉装置是利用脉冲电磁阀对输入的压缩空气气流的瞬间切换,经由喷吹管将压缩空气喷入滤袋中,在反向气流的作用下迫使滤袋鼓胀,从而清除滤袋上的挂粉的过程.这种捕粉可实现不停机连续清理滤袋上的挂粉,其清理滤袋上的挂粉比较彻底,省时,生产效率高,近些年来在喷雾干燥生产的不同领域里也都得到了应用,如用于乳品、医疗保健品、玉米深加工及大豆深加工等的喷雾干燥生产上.但也存在一些问题,仅以MGYP01-500型立式压力喷雾干燥系统在奶粉生产中应用为例就其设计及应用注意事项加以阐述.

关键词: 脉冲反吹滤袋捕粉装置; 设计; 喷雾干燥生产; 注意事项