Device for filling cans and method for operating the device
AssigneeKrones AG
InventorWalter Neumayer
Life of this patent
Estimating the term…
Abstract
A device for filling cans includes a filling valve, a gas channel and a seal. The seal is connected to the gas channel for receiving a compressed gas and is elastically deformable by the received compressed gas in a downward direction for pressing against a peripheral upper edge of a can positioned below the filling valve. Advantageously, the device can enable a secure sealing of the inlet gap between the can and the filling valve with comparatively low contact forces via the downwardly elastically deformable seal, so that even very thin-walled cans can be filled without risk of damage.
Claims18
A device for filling cans, having:
- a filling valve for filling a can positioned below the filling valve with a filling material;
- a gas channel for guiding a compressed gas;
- and
- a seal which:
- is connected to the gas channel for receiving the compressed gas, and
- is elastically deformable by the received compressed gas in a downward direction for pressing against a peripheral upper edge of the can positioned under the filling valve,
- wherein at least one of:
- the seal can be inflated by the compressed gas from the gas channel;
- the seal has an elastically deformable bellows section;
- the seal has an inner chamber into which the gas channel opens, and
- the seal has a substantially U-shaped cross-section.
A device for filling cans, comprising:
- a filling valve for filling a can positioned below the filling valve with a filling material;
- a gas channel for guiding a compressed gas:
- and
- a seal which:
- is connected to the gas channel for receiving the compressed gas, and
- is elastically deformable by the received compressed gas in a downward direction for pressing against a peripheral upper edge of the can positioned under the filling valve, wherein at least one of:
- the seal has an elastically deformable bellows section
- the seal has an inner chamber into which the gas channel opens, and
- the seal has a substantially U-shaped cross-section.
A method for operating a device for filling cans, comprising:
- pressurizing a seal with a compressed gas, so that the seal deforms elastically in a downward direction and presses against a peripheral upper edge of a can;
- filling the can with a filling material from a filling valve while the seal is pressurized with the compressed gas and presses against the peripheral upper edge;
- positioning a cleaning cap under the filling valve and the seal;
- and
- cleaning the filling valve and the seal via a cleaning fluid while the cleaning cap is positioned below the filling valve and the seal,
- wherein the seal is pressurized with a compressed gas at least one of temporarily and repeatedly during the cleaning, so that the seal elastically deforms in a downward direction into a chamber of the cleaning cap.
Dependencies are inferred from the claim text.