But it happens excess speed,hyperpressure,jamming in operation process.several common malfunctions were analysed and resolution method was put forwad in this paper.

• 但在使用中也经常发生超速、机后压力超高、卡机等各种故障,现就几种常见故障进行分析,并提出解决方法,以保证设备的正常运行。