Gas flush injector
AssigneeProseal UK Limited
InventorThomas Glazebrook
Life of this patent
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Abstract
Packaging apparatus, such as a tray sealer, with a gas supply arrangement enabling a flushing gas to be conducted between a flushing gas outlet (26) and a flushing gas inlet (14) which are relatively moveable. The flushing gas inlet is positioned above the flushing gas outlet. The gas supply arrangement includes a barrel 15 connected to the inlet (14) and sliding in a sleeve connected to the outlet (26). In a first predetermined relative position of the flushing gas outlet and flushing gas inlet a fluid flow connection is established between the flushing gas outlet and flushing gas inlet. In a second predetermined relative position the flushing gas inlet and flushing gas outlet are disconnected and liquid may drain from the barrel 15.
Claims22
A gas flush injector for a packaging apparatus having an upper tool and a lower tool, the injector comprising:
- a flushing gas outlet for connection to a gas supply,
- a flushing gas inlet in communication with the packaging apparatus lower tool, and
- a gas supply arrangement comprising a conduit enabling a flushing gas to be conducted through the conduit between the flushing gas outlet and the flushing gas inlet,
- wherein the flushing gas inlet is positioned above and is moveable relative to the flushing gas outlet, and
- wherein the gas supply arrangement is arranged such that when the flushing gas outlet and the flushing gas inlet are in a first predetermined relative position a fluid flow connection is established through the conduit between the flushing gas outlet and the flushing gas inlet, and such that when the flushing gas outlet and the flushing gas inlet are in a second predetermined relative position the flushing gas inlet and the flushing gas outlet are disconnected and the flushing gas inlet can drain through the conduit in a direction away from the flushing gas inlet.
Dependencies are inferred from the claim text.