Multifunctional automatic sample injector for optical spectrum instrument

The utility model relates to a multifunctional automatic sample injector for a spectrum instrument. The multifunctional automatic sample injector comprises a shell, a liquid adding system, an automatic sampling system and a control system, wherein the liquid adding system is used for adding a reagent into a test tube; the constant volume system is used for controlling the amount of reagents injected into the test tubes; the uniform mixing system is used for moving the test tube so as to uniformly mix the medicament in the test tube; the liquid taking and sampling system is used for injecting the uniformly mixed medicament in the test tube into the detection system; the ultrasonic water bath digestion and constant temperature system is used for digesting the medicament in the test tube; and the exhaust system is used for cooling the medicament in the test tube. The multifunctional automatic sample injector for the optical spectrum instrument is simple in operation process and diverse in function, does not need