Quick-opening system in hydraulic circuit associated with release system of papermaking calender rollers, includes pistons and tube with bore in arrangement holding oil volume constant

摘要

The piston (52) and quick-opening piston (57) provide continuous emptying of the quick-opening chamber (56) via the channel (65) positioned at the end of the cylinder. The tube (58) is closed at the other end, preventing oil from reaching the pressure equalization chamber (61). The tube includes a bore (59) for oil flow, holding the oil volume of the quick-opening chamber constant.