Compaction degree detection sampling device

The invention provides a compactness detection sampling device which comprises a sampling barrel, a rotating shaft, a sleeve rod and a rotating rod, the bottom ends of the sleeve rod and the rotating rod both penetrate through the top of the sampling barrel, a plurality of blades are uniformly arranged at the bottom end of the rotating rod, and a plurality of mud supporting pieces close to the blades in height are uniformly arranged at the bottom end of the sleeve rod; wherein an operator adjusts the positions of the plurality of blades by rotating the swivel handle, so that the plurality of blades and the plurality of mud supporting sheets are matched with each other to cover the cross section of the bottom of the sampling barrel, and the closed state of the sampling barrel after sampling is completed is realized. By arranging the rotating rod, the rotating shaft and the sleeve rod which are sequentially connected in a sleeving mode and arranging the blade and the mud supporting piece which are close in heig