Asymmetric rotor including a cutting edge and a pump that includes the asymmetric rotor

A rotor (1) comprising an asymmetrical structure for a pump, wherein the pump includes two identical rotors, for moving and grinding inhomogeneous materials, wherein each rotor (1) comprises at least one cutting edge (2) and at least one rounded edge (3) and each rotor (1) comprises a first circular element (4) where at least one material-moving cavity (5) is provided in the first circular element (4), wherein the at least one rounded edge is defined at an intersection between a second concave recess (8) of the at least one material-moving cavity and an outer edge of the first circular element, wherein each rotor has a center and a radius from the center to the at least one cutting edge is substantially the same as a radius from the center of each rotor to the at least one rounded edge.