Abstract: An emptying apparatus for pasty materials is disclosed. The apparatus consists of a cylindrical container and means for stirring pasty materials in the container. The container is equipped with a spiral pump associated with an adjustable strip baffle along the vertical wall of the container wherein the baffle strip can be adjusted to vary the angle the baffle makes with the container wall. The spiral pump is connected with a suitable outlet means such as a pipe which may be provided with a closure means such as a stopcock and an overflow pipe to return material to the container when the closure means is closed.