Stirrer, having substantially triangular, radial blades, rising toward the circumference

A stirrer, comprising a spindle provided with a drive, to which spindle a plurality of stirring blades is affixed, the improvement comprising a plate affixed to the spindle perpendicular to the axis thereof, on at least one side of said plate a plurality of stirring blades being affixed, the blades lying in planes which are bent or slightly inclined in radial direction with respect to an accurately radial plane, said blades having the form of substantially right angled triangles each having the longer base directed radially and the shorter perpendicular parallel to the axis, lying as the extreme edge at the greatest distance from the axis, the number of stirring blades on said one side amounting to at least 8, the height of the extreme blade being about 0.8 to about 1.25 times the perpendicular distance of the extreme end of one blade to the successive blade, and the length of the blades, measured along their hypothenuse, being at least twice the height thereof.

A stirrer comprising a spindle provided with a drive, to which spindle a plurality of stirring blades is affixed, the improvement comprising a plate affixed to the spindle perpendicular to the axis thereof, on at least one of said plate a plurality of stirring blades being affixed, the blades lying in planes which are slightly inclined in vertical direction perpendicular to the plate, said blades having the form of substantially right angled triangles each having the longer base directed radially and the shorter perpendicular parallel to the axis, lying as the extreme edge at the greatest distance from the axis, the number of stirring blades on said one side amounting to at least 8, the height of the extreme blade edge being about 0.8 to about 1.25 times the perpendicular distance of the extreme end of one blade to the successive blade, and the length of the blades, measured along their hypothenuse, being at least twice the height thereof.

Centrifugal impeller, affixed at the end of a driven hollow spindle for the supply of a fluid, and terminating into a narrow circumferential slit through which, during rotation, the fluid supplied leaves the impeller, the improvement comprising a plurality of stirring blades mounted on the impeller, the radial length of the blades being substantially equal to the radial dimension of the centrifugal impeller, and the blades having the form of substantially right angled triangles each having the longer base directed radially and the shorter perpendicular parallel to the axis, lying as the extreme edge at the greatest distance from the axis, the number of stirring blades on one side amounting to at least 8, the height of the extreme blade edge being about 0.8 to about 1.25 times the perpendicular distance of the extreme end of one blade to the successive blade, and the length of the blades, measured along their hypothenuse, amounting to at least twice the height thereof.