The phenomena that the PE powder pneumatic haulage blowers frequently interlock shutdown was described, the possible reasons were analyzed in many aspects and the main reason was found out, the method to solve the problem was given.

• 对聚乙烯粉末输送风机频繁联锁跳车现象进行了描述,从不同方面对可能的原因进行了分析,并找出根本原因,给出解决方法。