Powder conveying pump
AssigneeDürr Systems AG
InventorsThomas Durr, Hans-Georg Fritz, Frank Herre
Life of this patent
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Abstract
A powder conveying pump, in particular for a powder coating device. The pump comprises a working chamber with a variable working chamber volume, a powder inlet opening into the working chamber to suck powder into the working chamber, a powder outlet opening out of the working chamber to expel the powder present in the working chamber and a moveable piston that forms one boundary surface of the working chamber and sucks the powder into the working chamber through the powder inlet during an upward movement. The piston is driven directly by pneumatic means.
Claims20
A powder conveying pump for a powder coating installation, comprising:
- a working chamber with a variable working chamber volume;
- a powder inlet opening into the working chamber to suck powder into the working chamber;
- a powder outlet opening out of the working chamber to discharge the powder present in the working chamber;
- a moveable piston forming one boundary surface of the working chamber and operable to suck the powder into the working chamber through the powder inlet during movement of the piston in a direction away from the working chamber;
- and
- pneumatic means for directly driving the piston pneumatically.
Dependencies are inferred from the claim text.