Vacuum Roll with Internal Rotary Valve

摘要

A vacuum roll includes an inner rotor, an intermediate stator, and an outer shell roll. The inner rotor has open and closed portions and is adapted to rotate within the intermediate stator which is rotationally fixed and also has open and closed portions. The outer shell roll has open and closed portions and is adapted to move around the intermediate stator. Together the inner rotor and the intermediate stator define an internal rotary valve interface adapted to control fluid communication between the interior chamber and the outer shell.

主权项

1. A vacuum roll comprising,
an inner rotor, an intermediate stator, and an outer shell roll, wherein the inner rotor is adapted to rotate around a first axis and defines an interior chamber, an open portion, and a closed portion, in a circumferential direction, the intermediate stator is rotationally fixed and has a second axis and surrounds the inner rotor, the intermediate stator defines an open portion and a closed portion in the circumferential direction, the outer shell roll is adapted to move about a third axis and surrounds the intermediate stator, the outer shell roll defines an open portion and a closed portion in the circumferential direction, and together the inner rotor and the intermediate stator define an internal rotary valve interface adapted to control fluid communication between the interior chamber and the outer shell roll.