Abstract: An air outlet system for a portable dry vacuum cleaner, via which intake air sucked in by the dry vacuum cleaner can be expelled into the surroundings as exhaust air, wherein the air outlet system has an accommodation bay, which is to be arranged in a housing of the dry vacuum cleaner and in which optionally an air filter cartridge or an outlet adapter may be accommodated, wherein the outlet adapter has an outlet fitting for the connection of a blower hose and the air filter cartridge is free from an outlet fitting of this kind.

Abstract: An arrangement of components in a portable wet vacuum cleaner, wherein the wet vacuum cleaner includes a container for collecting a liquid-dirt mixture. The component arrangement is characterized, in particular, by a sloping sealing plane as the upper termination of a collecting container of the wet vacuum cleaner, wherein the sloping sealing plane includes a filter unit. In a second aspect, the invention furthermore relates to a wet vacuum cleaner having a component arrangement of this kind.

Abstract: An air outlet system for a portable dry vacuum cleaner, via which intake air sucked in by the dry vacuum cleaner can be expelled into the surroundings as exhaust air, wherein the air outlet system has an accommodation bay, which is to be arranged in a housing of the dry vacuum cleaner and in which optionally an air filter cartridge or an outlet adapter may be accommodated, wherein the outlet adapter has an outlet fitting for the connection of a blower hose and the air filter cartridge is free from an outlet fitting of this kind.

Abstract: A hose coupling system including an inlet fitting, which is to be arranged or is arranged on a vacuum cleaner, and including a tubular connection piece, which is to be connected or is connected to a suction hose, wherein the connection piece is to be inserted into the inlet fitting in the coaxial direction, wherein the hose coupling system has an actuable latching element by means of which the connection piece can be held in the inlet fitting in a form-fitting manner and can be released again as required.

Abstract: Shut-off device for at least partially blocking a fluid in a fluid line, including a blocking device which has a substantially cylindrical basic body and includes a first end and a second end, wherein the blocking device can be positioned in the fluid line and, by rotation in a direction of rotation (A) about an axis of rotation (R), can be reversibly adjusted from a blocking position, in which no fluid can flow through the blocking device, into a throughflow position, in which fluid can flow through the blocking device. The blocking device includes a first through-opening and a second-through opening, wherein the cross section of the first through-opening is smaller than the cross section of the second through-opening.