Patent ID: 8157966

Claim:
An apparatus for deaeration of wire water in a web formation machine, said apparatus comprising: a deaeration tank connected to a vacuum-generating device which forms a vacuum in a vacuum space in an interior of the deaeration tank; at least one wire water feed pipe extending into the interior of said deaeration tank, connected to a wire water source and opening at a discharge end to the vacuum space above a liquid surface of wire water in the interior of the tank, and a wire water discharge duct is connected to a bottom part of the tank, extends downward from the tank and is connected to a pump; wherein the at least one wire water feed pipe extends into the interior space above the liquid surface of the wire water in the tank such that wire water flows from the discharge edge into the vacuum space and onto the liquid surface of the wire water, and wherein a primary motive force moving the wire water through the at least one wire water feed pipe is due to a suction applied to the outlet of the feed pipe in the tank by the vacuum in the vacuum space.