Precision flow feeding device

A device for feeding a processing device with powdery material comprising:

• a first chamber having a receiving opening for receiving the powdery material within the first chamber and at least one fluidizing device configured to at least one of fluidize and to potentially fluidize the powdery material within the first chamber by a fluidizing gas;
• at least one second chamber having an outlet opening,
• wherein the second chamber is in connection with the first chamber via a passage such that at least one of the fluidized and the potentially fluidized powdery material is transportable from the first chamber into the second chamber,
• wherein the second chamber is closed off in an air-tight manner towards an outside such, that the second chamber is capable of compensating a fluidizing pressure of the fluidizing gas so that at least one of the fluidized powdery material within the second chamber is potentially fluidized and that the potentially fluidized powdery material within the second chamber remains potentially fluidized, and
• wherein the potentially fluidized powdery material is dischargeable from the second chamber via the outlet opening;
• and
• at least one third chamber, wherein the third chamber is in connection with the second chamber via the outlet opening such, that the potentially fluidized powdery material is transportable from the second chamber into the third chamber,
• wherein the device is configured such, that the potentially fluidized powdery material is defluidized and is present as defluidized powdery material in the third chamber, and
• wherein the third chamber has a discharge element configured to discharge the defluidized powdery material.