Stirring device

An axially conveying stirring device, for stirring, mixing, homogenizing, dispersing and/or suspending, abrasive media, with at least one stirring blade, which is configured to rotate about a rotary axis, and with a contour unit, which is configured for reducing wear-down of the at least one stirring blade and which is embodied at least partly in a one-part-implementation with the at least one stirring blade, wherein

• the contour unit comprises at least one contour curvature element, which is implemented by a curved portion of the at least one stirring blade,
• a bending radius of the contour curvature element is smaller with respect to a further bending radius of a stirring blade curvature of a remaining portion of the at least one stirring blade,
• the at least one contour curvature element is curved in the same direction as the stirring blade curvature of the remaining portion,
• the contour unit comprises a first bending axis, which encloses a first angle with a stirring blade front edge,
• the stirring blade curvature of the remaining portion of the at least one stirring blade comprises a second bending axis, which encloses a second angle, which is different from the first angle, with the stirring blade front edge,
• the contour unit comprises at least one contour edge element, which is implemented at least partly by a stirring blade outer edge of the at least one stirring blade and is embodied, at least in a viewing direction in parallel to the rotary axis, along a circumferential direction at least substantially in a circular-arc shape, with a circular-arc center point being located on the rotary axis
• the bending radius of the contour curvature element is at least 5% smaller than the bending radius of the remaining portion of the stirring blade, and
• the bending radius of the contour curvature element corresponds to 10% of a stirring element diameter.