Mass flow measurement and measuring apparatus having a central bulk material feed
AssigneeSchenck Process LLC
InventorJens Kahle
Life of this patent
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Abstract
The present invention relates to a method and an apparatus for measuring a mass flow of flowable bulk materials according to the Coriolis principle of measurement. The apparatus comprises a vane wheel by which a mass flow that is supplied in axial direction can be radially redirected and by which it is possible to detect the drive torque that that necessary to achieve the redirection. A drive shaft that is routed through the top side of the housing is configured as a hollow shaft through which the bulk material can be fed to the vane wheel in vertical direction toward the center of its axis of rotation.
Claims11
A method for measuring a mass flow of flowable bulk material according to the Coriolis principle of measurement, the method comprising:
- powering, by a vertically-disposed hollow shaft, a vane wheel that is disposed below the hollow shaft;
- and
- feeding, through the hollow shaft, the bulk material vertically from above.
An apparatus for measuring a mass flow of flowable bulk materials according to the Coriolis principle of measurement, the apparatus comprising:
- a rotablv supported drive shaft (9) that is routed in vertical alignment through the top side of a stationary housing (2) and connected to a drive;
- and
- a vane wheel (3), which is powered by the drive and at a constant speed, by which a mass flow that is supplied in axial direction is radially redirectable and detectable with the drive torque that is necessary for the redirection inside a torque measuring means (7), and wherein the vane wheel (3) is fastened inside the housing (2) below the rotably supported drive shaft (9), and wherein an outlet cone (4) is disposed below the vane wheel (3) on the housing (2) that encloses a bulk material chamber in conjunction with the housing and contains a discharge opening (5) at its bottom end;
- wherein the drive shaft (9) is configured as a hollow shaft that is open on both ends and aligned by its first opening with the feed opening (16) and opens up by its second opening to the vane wheel (3) and through which the mass flow that is to be measured can be fed in vertical direction to the vane wheel (3);
- and
- wherein the apparatus extends essentially rotationally symmetrical around a center axis.
Dependencies are inferred from the claim text.