A shearing device (1), an arrangement and uses thereof. The shearing device is connectable to a drive assembly of the arrangement for separating solids from liquid, the shearing device (1) comprising - attachment arrangement (3) arranged in a first end (4) of the device for connecting the shearing device (1) to the drive assembly, - a shearing arrangement (19) being arranged to define shearing elements (5) angled with the lengthwise direction (AL) of the device and intervals (6) therebetween, wherein - the device (1) has a proximal portion (7) closer to the first end (4) and a distal portion (8) closer to a second end (9) of the device opposite to the first end (4), and - average width of the shearing elements (5) arranged in the distal portion (8) is greater than average width of the shearing elements (5) arranged in the proximal portion (7).