Method in a paper machine or in a finishing device of a paper machine for collecting and removing dust separated from a web
AssigneeValmet Corporation
InventorJens P. Enkvist
Life of this patent
Estimating the term…
Abstract
A method in a paper machine or in a finishing device of a paper machine for collecting and removing dust and other particulate material separated from or in the vicinity of a web. Air that contains the dust is transferred by air blowings, specifically, a first air flow is directed from a first blow nozzle to flow in the cross direction of the machine from the tending side of the machine to the driving side. This first air flow carries the dust separated from the web or equivalent along with it. The dust-laden air flow is turned downwards by a second air flow being directed from a second blow nozzle to be drawn into a suction box.
Claims7
A method in a paper machine or in a finishing device of a paper machine for collecting and removing dust separated from a web at a dry end of the paper machine at which the web is at least partially dried, the paper machine having a tending side and a driving side, comprising the steps of:
- directing a first air flow from a first blow nozzle in a cross direction of the machine from the tending side of the machine to the driving side of the machine to carry dust separated from the web therewith,
- drawing air from the driving side of the machine into a suction box, and
- directing a second air flow from a second blow nozzle into the path of said first air flow at the driving side of the machine to redirect said first air flow toward said suction box such that said second air flow is drawn into said suction box, and
- collecting the dust at a location after said suction box.
Dependencies are inferred from the claim text.