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US 5,255,830 AGranted
Gravimetric metering apparatus for pourable material and conveying system using it
AssigneePfister GmbH
InventorHans W. Hafner
Life of this patent
Estimating the term…
Abstract
A continuous gravimetric metering apparatus for pourable material including a predetermined measuring path supplied with pourable material, the predetermined measuring path being provided with a porous wall for continuously supplying a finely distributed air stream thereto. The apparatus is particularly adapted for use in a continuously operating conveying system for pourable material having lower flowability in large quantities.
Claims18
A continuous gravimetric metering apparatus for pourable material comprising:
- a housing;
- a predetermined measuring path including a rotor rotatably mounted in the housing immediately adjacent and between a top wall and a bottom wall thereof arranged in a parallel to each other so as to define peripherally distributed pockets, said top wall of said housing having a charging inlet for supplying pourable material to said pockets and said bottom wall having a discharging outlet offset in respect of said charging inlet in the direction of rotation of said rotor, said predetermined measuring path being represented by an angular distance between said charging inlet and said discharging outlet;
- and
- a pressurized gas space contiguous to said bottom wall, said bottom wall being porous at least in a region covered by said pockets for fluidizing the pourable material within said pockets.
1 more element
A system for metered conveying of pourable material in large quantities comprising:
- a housing;
- a continuous gravimetric metering apparatus including a rotor rotatably mounted in the housing between a top wall and a bottom wall thereof arranged in parallel to each other and being provided with peripherally distributed pockets, said top wall of said housing having a charging inlet for supplying pourable material to said pockets and said bottom wall having a discharging outlet offset in respect of said charging inlet in the direction of rotation of said rotor said predetermined measuring path being represented by an angular distance between said charging inlet and said discharging outlet;
- a pressurized gas space contiguous to said bottom wall, said bottom wall being porous at least in a region covered by said pockets;
- and
- container means arranged above said charging inlet for supplying pourable material to said pockets of said rotor, said container means having a porous bottom wall below which there is arranged a further pressurized gas space.
2 more elements
Dependencies are inferred from the claim text.