Patent ID: 7614311

Claim:
Device for measuring the mass flow, particularly of a bulk material flow, in accordance with the Coriolis measuring principle, which device comprises an impeller wheel ( 2 ), which is driven by a motor ( 5 ) at constant speed and onto which the material flow ( 10 ) is dispensed and deflected radially and the drive torque is measured by means of a force-measuring device ( 7 ), wherein a drive shaft ( 3 ), which supports the impeller wheel ( 2 ), is mounted rotatably in a bearing sleeve ( 4 ) and is enclosed coaxially by the same and protrudes into the impeller wheel housing chamber ( 8 ), wherein the bearing sleeve ( 4 ) is mounted rotatably in a stationary drive housing part ( 9 ) and is driven at a speed, which corresponds to that of the drive shaft ( 3 ), said device being characterized in that the force-measuring device ( 7 ) is disposed between the drive shaft ( 3 ) and the bearing sleeve ( 4 ), wherein a force-receiving part ( 13 ) of the force-measuring device ( 7 ) is fixed to a part disposed in an interior zone ( 11 ) of the bearing sleeve ( 4 ) and that the drive shaft ( 3 ) is supported on a force-inducing part ( 12 ) by means of a drive means ( 14 ) spaced apart from the rotation point and the drive torque between the bearing sleeve ( 4 ) and the drive shaft ( 3 ) is detected.