Bagged cement sampling device for engineering supervision

The utility model discloses an engineering supervision bagged cement sampling device which comprises a sampling barrel and a fixing pipe, the rear end of the sampling barrel is connected with a rear cover in a sliding mode, a screw hole penetrating through the front end face and the rear end face is formed in the center of the rear cover, the fixing pipe is connected to the sampling barrel in a threaded mode, and a sampling needle is arranged in the sampling barrel. And the sampling needle is in sliding connection with the sampling barrel through a sliding block. The sampling needle is clampedon a cement bag through the elastic strip and the convex edge on the fixing pipe, then the sampling needle is driven to rotate through the crank, and the conical head is easily inserted into the cement bag through the opening of the conical body under the thread fit of the threaded section and the screw hole and the sliding fit of the sliding block in the sampling cylinder, so that the cement bagis punctured; the conical