US 6,716,315 B2 · Water draining device

Abstract

Water draining device for a paper machine or the like, in particular for a felted press of such a paper machine, including a receiving tank extending at least essentially over the machine width. The receiving tank includes a first chamber that receives arriving water and is under ambient pressure, and a second chamber that is connected to the first chamber and is under vacuum, into which the water collecting in the first chamber is aspirated and from which the water is eventually drained. A water receiving device of improved efficiency is also provided by forming a water receiving device by at least one suction channel projecting into the wedge-shaped area between the upper press roll and the dewatering belt, and extending transverse to the pulp web, which suction channel is connected to a source of reduced pressure.

Claims22

Dependent claims

In combination, a water draining device and a paper machine;

said water draining device comprising a receiving tank, said receiving tank including a first chamber under ambient pressure and capable of receiving and collecting arriving water under ambient pressure, and a second chamber connected to said first chamber, said second chamber being connectable to a vacuum source so that said second chamber can be placed under vacuum for aspirating water collecting in the first chamber into said second chamber with said first chamber and said second chamber being constructed and arranged so that a level of water in said second chamber is higher than a level of water in said first chamber, and said second chamber including at least one drain from which water can be drained from said second chamber;
said paper machine having a machine width;
and
said draining device extending at least substantially over the machine width.

1 more element

Dependencies are inferred from the claim text.

Water draining device

Life of this patent

Water draining device

Life of this patent

Abstract

Claims22