Argon detection alarm device of graphite furnace atomic absorption spectrophotometer

The utility model is applicable to the technical field of argon detection, and provides an argon detection alarm device of a graphite furnace atomic absorption spectrophotometer, which comprises a first connecting pipe, a second connecting pipe and an alarm device, the outer surface of the flow control valve is fixedly connected with a ventilation detection switch and a pressure measuring meter in a penetrating mode. According to the argon replacement device, the content of input argon and the content of output argon are detected through the first flow meter and the second flow meter respectively, the percentage content of the argon in a pipeline is guaranteed, and therefore replacement work before argon is completed is guaranteed, and if the argon content measured by the first flow meter and the second flow meter after long-time replacement still exceeds an error, the argon is replaced. The timer, the first flow meter and the second flow meter are combined to give an alarm, namely the alarm horn, the flashin