主营产品有：螺旋输送机，垂直螺旋输送机，可弯曲螺旋输送机，双螺旋输送机。
Main products are: screw conveyor, vertical screw conveyor, flexible screw conveyor, two-screw conveyor.
由于S NPK装置扩能，使磷酸生产的副产品磷石膏增加，致使输送磷石膏的双螺旋输送机常发生故障。
The S-based NPK capacity enlargement leading to the increase of phosphogypsum in phosphoric acid production, mechanical faults occurred to the twin screw conveyor.
该文对该厂双螺旋输送机的输送能力及所需功率进行了核算，并介绍螺旋旋芯磨损严重、螺旋轴弯曲、串轴等故障进行技改的情况。
The transportation capacity and needed power of the conveyor are examined, with a description of the modification to the conveyor in its roller damage, axis bend, axis in series etc.
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