Automatic cover opening mechanism for chromatography sample bottle

The utility model discloses an automatic cover opening mechanism for a chromatographic sample bottle, which comprises a vibration disc connected with a controller, a spiral upward feeding channel with a U-shaped section is arranged on the vibration disc, an inclined slide way is arranged on one side of the feeding channel, the section of the slide way is U-shaped, and a feeding notch, a screening mechanism and a rotating mechanism are sequentially arranged on the slide way from the upper end to the lower end; the screening mechanism comprises a first through hole and a second through hole which are located in the two sides of the sliding way respectively and further comprises a first air cylinder fixed to the outer side of the sliding way, the first air cylinder is connected with a controller through a first electromagnetic valve, a push plate is arranged at the telescopic end of the first air cylinder, and ribs are arranged on the bottom face of the sliding way and located on the rear side of the screening m