Patent ID: 8147213

Claim:
A device for conveying powdery fluidized media, the device comprising: a receptacle with an inner chamber for a powdery medium to be conveyed, the receptacle comprising a fluidizing base of porous material; an introducing line below the fluidizing base through which a compressed gas is introduced in order to fluidize the powdery medium contained in the receptacle into the powdery fluidized medium; a pump which sucks the powdery fluidized medium from the receptacle via a connecting channel which can be closed by a valve body; an upper end region of the connecting channel and an upper end region of the valve body are configured so that an annular venturi nozzle which acts as the pump is formed therebetween; wherein when the valve body is in a closed position, a sealing section of the valve body rests sealingly in the upper end region of the connecting channel, wherein the valve body includes a conveying gas channel which can be charged with a conveying gas, and the conveying gas can be supplied through the conveying gas channel to the connecting channel in a vicinity of the sealing section substantially in a flow direction the powdery fluidized medium flows in when the valve body is in an open position.