对于膏状、滤饼状及较松散的微粉含湿物料的输送，通常采用低转速的闭式双螺旋结构的送料机实行定量输送。但在实际应用中，对于较低湿含量的微粉物料的输送，采用通常设计制造的送料机易出现抱杆，物料夹层变硬，从而导致输送量不稳定及驱动动率不足等缺陷。针对此种情况，提出改进的几种方法，实践证明效果良好。 For paste, filter cake and more loose powder moisture content of the delivery, usually low-speed closed double-helix structure of the feeder for quantitative delivery. However, in practical applications, for the delivery of the powder material with lower moisture content, it is easy to adopt the feeder which is usually designed and manufactured, and the material sandwich becomes hard, which leads to instability of delivery and insufficient driving rate. In view of this kind of situation, puts forward several methods of improvement, the practice proved that the result is good.