Pluggable grain bag bottom surface sampling mechanism capable of preventing residual leakage

The invention discloses an anti-residual-leakage plug-in grain bag bottom surface sampling mechanism, and belongs to the technical field of grain sampling, the anti-residual-leakage plug-in grain bag bottom surface sampling mechanism comprises a shell, the upper surface of the shell is in bolted connection with a cover plate, the inner wall of the shell is in bolted connection with a pneumatic telescopic rod, and the tail end of the pneumatic telescopic rod is in bolted connection with an outer frame; a material receiving pipe is fixedly connected to the interior of the outer frame; the device further comprises a lower connecting plate, the lower connecting plate is fixedly connected to the lower surface of the shell, a long pin is arranged in the lower connecting plate in a sliding mode, and the tail end of the long pin is fixedly connected with a movable frame. When the pluggable grain bag bottom surface sampling mechanism capable of preventing residual leakage is used, a grain sample enters the outer frame