Abstract: The invention is directed to a bell-shaped shield (1) for use on a household appliance, particularly a hand blender or a hand mixer. The inner wall (7) of the shield (1) forms a space (6) which is accessible from below via an opening (12) through which food (36) is supplied and discharged. A blade-like processing tool (8) inside the space (6) is adapted to be set in rotation by a drive shaft (3) so that the food (36) is caught, comminuted and/or mixed by said tool. The surface of the inner wall (7) has on its circumference individual outwardly extending wall sections (51) for the formation of clearance spaces (37), said wall sections (51) serving primarily for the diversion, comminution and enhanced mixing of food, while the clearance spaces (37) are used for receiving and discharging the food (36). This configuration allows for a more intensive and thorough mixing and comminution of food (36) in a minimum of time.