Method of dosing fibres
AssigneeSkako A/S
InventorNiels H. Nielsen
Life of this patent
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Abstract
In a method of dosing fibers, such as steel fibers to be mixed in concrete, a supply of fibers (5) is stored in first vibration feeder (2) and is moved from this by means of a second vibration feeder (3). For each dosing operation, a proportioned quantity of fibers (5) is transferred at a stepless rate or a stepwise declining rate from the first to the second vibration feeder (2, 3) while the second vibration feeder (3) stands still. This vibration feeder (3) then transports the transferred fiber quantity further on to the subsequent process while the first vibration feeder (2) stands still. The fibers can hereby be dosed more accurately and uniformly than known before.
Claims10
A method of dosing fibres to be mixed in concrete, said method comprising:
- storing a supply of fibres in a first vibration feeder having a trough for containing fibres and for transporting fibres by the action of a wall of the trough on the fibres,
- transferring a quantity of fibres proportioned for a dosing operation by vibrations of the first feeder from the first to a second feeder having a trough for containing fibres and for transporting fibres by the action of a wall of the trough on the fibres, while said second vibration feeder stands still,
- transporting the transferred fibre quantity from said second vibration feeder while the first vibration feeder stands still, and
- transferring fibres from said second vibration feeder into a concrete mixture being mixed.
A method of dosing fibres to be mixed in concrete, said method comprising:
- storing a supply of fibres in a first vibration feeder,
- transferring a quantity of fibres proportioned for a dosing operation from the first to a second vibration feeder while said second vibration feeder stands still,
- transporting the transferred fibre quantity from said second vibration feeder while the first vibration feeder stands still, and
- transferring through a net or a grate positioned on the first vibration feeder substantially transversely to the direction of transport of the fibres.
A method of dosing fibres to be mixed in concrete, said method comprising:
- storing a supply of fibres in a first vibration feeder,
- transferring a quantity of fibres proportioned for a dosing operation from the first to a second vibration feeder while said second vibration feeder stands still,
- transporting the transferred fibre quantity from said second vibration feeder while the first vibration feeder stands still, and
- positioning a net or a grate at a distance behind an outlet edge of the first vibration feeder.
Dependencies are inferred from the claim text.