Marel Hf

H. F. Marel, Ltd.

Kristinn Steingrimsson

Helgi Hjalmarsson

Jon Thor Olafsson

Bjarni Valur Valtysson

Horour Arnarson

A belt weighing apparatus for maintaining high accuracy in weighing by way of maintaining a fixed tension in the belt and preventing the belt from oscillating. The belt conveyor is comprised of a supporting frame, an upper guiding unit arranged on the supporting frame, a first and a second end-supporting device arranged on the supporting frame in proximity to the opposite ends of the upper guiding unit, a motor unit, at least one weighing platform arranged in-between the first and a second end-supporting devices, a lower guiding unit having a first property arranged on the supporting frame, and an endless conveyor belt having a second property is extended between said first and a second end supporting devices. At any instant of time an upper part of the belt rests on the upper guiding unit and the weighing platform defining a conveying pad of the belt weighing apparatus, and the lower part of the belt defining the return way of the belt weighing apparatus rests partly on the lower guiding unit that acts as a support for part of the lower run while another part of the belt hangs freely. The accuracy in the weighing is maximized by matching the first and the second properties such that any heat expansion or contraction of the belt will be compensated at least partly through expansion or contraction of the lower guiding unit.

Apparatus and method for controlling the belt tension of a belt weigher

A grading unit divides a supply of objects into constituent portions and directs the divided portions to various predefined locations. At least one passageway is defined, being sufficiently inclined so that the supply of objects flows through the unit solely under the force of gravity. Diverting gates disposed along the passageway selectively divert objects from the passageway toward and through an associated secondary opening located adjacent the passageway. A dividing chute associated with each secondary opening is provided to direct the diverted objects to one of a plurality of different predefined locations.

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Reykjavik, Iceland

Kristinn Steingrimsson