Patent ID: 6322241
Filing Date: 2001-11-27
Classification: B01F

Abstract:
A stirring and mixing device for mixing a liquid and a solid, and comprising:a) an enclosed container having a liquid therein;b) a stirring device including an elongated shaft extending into the container so as to rotate and to move axially while rotating with respect to the container, a portion of the shaft located in an interior of the container having a plurality of stirring leaves thereon to stir the liquid in the container;c) a solid material feeder including a storage device storing the solid material located externally of the container, the storage device having a guide way extending into the interior of the container at least when the elongated shaft is rotating and moving axially whereby the solid is introduced into and mixed with the liquid; andd) a guide tube communicating with the interior of the container and an interior of the storage device during rotational and axial movement of the shaft whereby pressure within the storage device is the same as pressure within the container, thereby enabling the solid material to pass through the guide way and into the liquid as the shaft rotates and moves axially, wherein the guide way comprises a plurality of downwardly sloped steps within the container.