酚醛环氧树脂脱溶单元齿轮泵填料函的改进

Improvement on the Stuffing Box of Phenolic Epoxy Resin Desolventing Unit Gear Pump

酚醛环氧树脂生产的脱溶剂单元中,降膜蒸发器循环泵及造粒机进料泵采用的齿轮泵在高温、高粘度及真空等的工艺条件运行,针对存在的手动盘车困难、填料函密封效果差、泄漏严重、填料寿命短和泵轴磨损较快等问题,分析了产生问题的原因,结合有关骨架油封密封应用,对填料函密封进行了改造,取得了较好的效果。

In the desolventing unit of phenolic epoxy resin production, gear pump of the falling film evaporator pump and pelletizer feeding runs under high temperature and high viscidity and vacuum. Concerning with the problems such as difficult operation of manual jigger, bad seal of stuffing box, severe leakage, short span of the stuffing, and quicker abrasion of pump's axis, reasons which causes for these problems are analyzed. Improvement is made on the stuffing box seal and better result is obtained in combination with the application of sealing of skeleton oil seal.