Filter bag apparatus for collecting dust

A filter bag apparatus for a vacuum-cleaning unit,

• wherein the filter bag apparatus can be arranged in a vacuum-cleaning unit accommodation space of the vacuum-cleaning unit and has a filter bag having a dust accommodation space for collecting dust,
• wherein the filter bag comprises, at least in part, a filter material through which air can flow and that retains dust in the dust accommodation space,
• wherein the filter bag apparatus has a bag inlet that can be connected to a suction inlet of the vacuum-cleaning units, the inlet being provided for inflow of a suction stream charged with dust, into the dust accommodation space,
• wherein a connection adapter for a connection to the suction inlet of the vacuum-cleaning unit is arranged on the bag inlet,
• wherein the connection adapter has a wall body that is plate-shaped and/or more rigid as compared with the filter material, the wall body having a pass-through opening configured as a plug-in holder, into which a tubular body that is flow-connected to the suction inlet of the vacuum-cleaning unit can be inserted,
• wherein a bag outlet for emptying dust out of the dust accommodation space is arranged in an outlet region of the filter bag,
• wherein the filter bag apparatus has a closure device for closing off the bag outlet,
• wherein the closure device comprises a hose body arranged on the bag outlet, the hose body having a hose outlet that is flow-connected to the bag outlet, for emptying dust out of the dust accommodation space,
• wherein the hose body extends along a longitudinal expanse between the bag outlet and the hose outlet and has a wrapper section between the bag outlet and the hose outlet, the wrapper section being able to be wrapped up into a wrapper toward the bag outlet, from a pass-through position that is provided for emptying the dust out of the dust accommodation space, in which position the wrapper section is unwrapped, in particular elongated, along a wrapping path, into a wrapped position that closes off the bag outlet,
• wherein the closure device has a wrapper fixation device for fixing the wrapper in place in the wrapped position, and
• wherein the wrapper fixation device, in a fixation position, counteracts unwrapping of the wrapper in the direction of the pass-through position, and, in a release position, releases the wrapper for unwrapping the wrapper into the pass-through position.