Painting booths comprising painting chambers and overspray removal units

A painting booth, comprising:

• a painting chamber;
• and
• an overspray removal unit;
• wherein a paint is sprayed in the painting chamber,
• wherein an air flow for evacuation of an overspray from the painting chamber crosses the painting chamber,
• wherein when exiting the painting chamber, the air flow which includes the overspray passes through the overspray removal unit in order to remove the overspray from the air flow for evacuation,
• wherein the overspray removal unit comprises a removing chamber which includes cleaning elements;
• wherein each of the cleaning elements has an individual shape, the individual shape of each of the cleaning elements having at least one dimension greater than 1 millimeter (mm),
• wherein at least one funnel conveyor is located directly between the painting chamber and the removing chamber,
• wherein the removing chamber comprises a mechanical stirrer for keeping the cleaning elements in a stirred condition, and
• wherein in the stirred condition, the cleaning elements are heaped together in a mass, the cleaning elements in contact with each other, the air flow containing the overspray passing through the mass of the cleaning elements so as to release the overspray onto the cleaning elements in the mass.