Patent ID: 8857675

Claim:
A device for the metered filling of bulk material having a metering screw ( 16 ), which is arranged in a hollow cylinder shaped metering tube ( 12 ) and which can be slid along a longitudinal axis (L) of the metering tube ( 12 ), the metering screw having a closing head ( 18 ) for closing a metering opening ( 14 ), wherein the closing head ( 18 ) has a substantially conical surface ( 20 ), characterized in that said metering tube ( 12 ) transitions after the metering opening ( 14 ) into a hollow cylinder shaped mouthpiece ( 32 ) having a-larger inner diameter (D Mi ) compared to an inner diameter (d Ri ,) of said metering tube ( 12 ), wherein a diameter of the closing head ( 18 ) is substantially the same as the inner diameter (d Ri ,) of the metering tube ( 12 ), wherein a surface (A) of an annular ring ( 42 ) defined by a difference between the inner diameter (D Mi ,) of the mouthpiece ( 32 ) and the inner diameter (d Ri ) of the metering tube ( 12 ) is greater than a metering surface (B) of the metering screw ( 16 ) in an open position, and wherein the mouthpiece ( 32 ) extends along the longitudinal axis (L) over the closing head ( 18 ) to an extent (e) in the open position.