Method and apparatus for contamination-free loading and emptying
OwnerRichard Denkinventor
Life of this patent
Estimating the term…
Abstract
In a mixer, in particular a tumbling mixer, the components to be mixed often still have to be dried during mixing, therefore the wall portions of the mixer are air permeable for force inducting drying air. In order to operate such a mixer contamination free for the ambient, it is proposed to cover the portions of the mixer with permeable walls on the outside with a cover, in particular a flexible foil, which is held tight at the mixer above and below the air permeable portions, so that drying air can be inducted between the foil and the mixer into the air permeable portions. Subsequently, the contaminated foil and the drum are provided to reprocessing or disposal.
Claims40
A device for contamination free loading and emptying, in particular a mixer (1), with a mixing drum (2), comprising:
- an inlet (3) and an outlet (6);
- and
- an at least partially permeable wall portion (2a) for inducting drying air, which mixing drum is otherwise sealed completely tight,
- a cover, which reaches over the partially permeable wall portion (2a) sealing it circumferentially tight, wherein
- the cover is a flexible foil (4), which is removably attached outside of the partially permeable wall portions (2a), on the outside of the drum (2).
A method for contamination free feeding and emptying of a mixer with a mixing drum (2) comprising:
- a) a foil (4) is attached about an at least partially permeable wall portion (2a) circumferentially tight at its outer circumference, so that the partially permeable portion (2a) is covered by the foil (4) on the outside, wherein the foil (4) comprises an upper length protrusion (4a) above the upper attachment;
- b) the components are placed one after another into an otherwise tightly closed drum (2) through the open inlet (3), and the inlet (3) is closed;
- c) the content of the drum (2) is coarsely mixed by moving the drum (2), in particular by rotating the drum (2) about its rotation axis (20), and/or tumbling the rotation axis (20);
- d) the drum (2) enclosed tight in the foil besides the outlet (6) is placed onto an outlet spout (15) fitting to the outlet (6) and the outlet closure (12) is opened;
- e) the mixture (17) is emptied from the drum (2) into the emptying spout (15) and the outlet closure (12) is subsequently closed;
- and
- f) the drum tightly enclosed by the foil (4) is provided to a suitable processing device or to disposal.
Dependencies are inferred from the claim text.