Apparatus for feeding powder coating apparatus with a powder-air mixture

An apparatus for feeding powder coating apparatus with a powder-air mixture, comprising a powder reservoir having first fluidization means for fluidizing powder and first conveying means for conveying the powder-air mixture thereby arising to the powder coating apparatus via an intermediate dosing container having separating means for separating the air from the incoming powder-air mixture, second fluidization means for fluidizing the remaining powder, dosing means for dosing the newly produced powder-air mixture and second conveying means for continuous delivery of the dosed powder-air mixture to said powder coating apparatus, said separating means comprising a cyclone formed in a cover of said intermediate dosing container, a powder supply passage for said powder-air mixture coming from the powder reservoir and an opening forming a communication path to the atmosphere for eliminating air constituents of the incoming powder-air mixture, said second fluidization means being accommodated in a floor region of said intermediate dosing container and comprising a fluidization floor having a fluidization air entry extending through said floor, wherein said dosing means is downstream of said fluidization floor and comprises a powder dosing chamber wherein a dosing cartridge having dosing air input and finely distributed dosing air discharge is arranged for enriching said powder-air mixture with additional air.