电火花加工过程中操作者不可能每时每刻守候在机床旁。因为煤油是易燃液体,加之有时操作失误或其它原因,电火花加工机床有可能发生火灾事故。ZJ 3型固定式自动灭火器,就是针对电火花加工机床上述情况研制的。该装置保护对象是电火花加工机床工作液槽,动作过程分自动和手动两种。实测由失火开始,5秒钟蜂鸣器自动报警,8秒钟灭火喷头喷出灭火剂,灭火剂喷射时间持续24秒钟。 EDM process operators can not always waiting at the machine. Because kerosene is a flammable liquid, coupled with the sometimes mistakes or other reasons, EDM machine may have a fire accident. ZJ 3 fixed automatic fire extinguisher, is developed for the EDM machine above conditions. The device is the object of protection EDM machine working fluid tank, the action sub-automatic and manual two. Measured by the beginning of the fire, 5 seconds buzzer alarm, extinguishing spray nozzle extinguishing agent for 8 seconds, extinguishing agent injection time lasted 24 seconds.