Method and a device for removing water from the surface of a roller jacket

A device adapted to remove water from a surface of a flexible rotatable roll jacket of a shoe press roll in a shoe press unit in a wet section of a paper-making machine, the shoe press unit including a counter roll cooperating with the shoe press roll to form an extended press nip for pressing water from a wet fiber web transported therethrough by a press felt forming a loop about the shoe press roll, the shoe press roll rotating in a direction of travel so as to advance the press felt and the wet fiber web through the extended press nip, said device comprising:

• a spray device disposed within the loop and adjacent to the shoe press roll, the spray device being configured to direct a spray of a liquid medium toward the roll jacket surface and at least partially against the direction of travel of the shoe press roll, the spray being configured such that the liquid medium contacts the roll jacket surface, collects any water pressed from the wet fiber web remaining on the roll jacket surface, and then rebounds from the roll jacket surface;
• and
• a liquid-receiving device disposed adjacent to and upstream, with respect to the direction of travel of the shoe press roll, of the spray device and having a lip element operably engaged therewith and capable of being extended therefrom toward the roll jacket surface so as to direct the rebounded liquid medium and water from the roll jacket surface toward the liquid-receiving device.

A press section of a paper-making machine, comprising:

• a shoe press unit including a shoe press roll having a flexible rotatable roll jacket and a counter roll cooperating with the shoe press roll to form an extended press nip adapted to press water from a wet fiber web transported therethrough by a press felt forming a loop about the shoe press roll, the shoe press roll rotating in a direction of travel so as to advance the press felt and die wet fiber web through the extended press nip;
• and
• a device disposed within the loop and adapted to remove water from a surface of the roll jacket, the device comprising:
• a spray device dispose adjacent to the shoe press roll, the spray device being configured to direct a spray of a liquid medium toward the roll jacket surface and at least partially against the direction of travel of the shoe press roll, the spray being configured such that the liquid medium contacts the roll jacket surface, collects any water pressed from the wet fiber web remaining on the roll jacket surface, and then rebounds from the roll jacket surface;
• and
• a liquid-receiving device disposed adjacent to and upstream, with respect to the direction of travel of the shoe press roll, of the spray device and having a lip element operably engaged therewith and capable being extended therefrom toward the roll jacket surface so as to direct the rebounded liquid medium and water from the roll jacket surface toward the liquid-receiving device.