公开(公告)号：US10539136B2

公开(公告)日：2020-01-21

申请号：US15516309

申请日：2015-11-20

申请人： NETZSCH Pumpen & Systeme GmbH

发明人： Stefan Weigl ,  Franz Kneidl ,  Thomas Schmitt ,  Achim Dehnz ,  Dominik Hindera ,  Mathias Obermaier ,  Markus Rosam ,  Erwin Weber

IPC分类号： F01C1/14 ,  F01C1/24 ,  F03C2/00 ,  F04C2/00 ,  F04C15/00 ,  F04C2/12

摘要： A method for fixing rotary pistons in a rotary piston pump and a method for dismantling rotary pistons of a rotary piston pump, where the rotary piston pump has two counter-rotating rotary arranged in a pump space on drive shafts. The rotary pistons each include a seating for the drive shafts. The respective drive shaft is arranged and fixed with an end region in the seating of the respective rotary piston. A diameter of the drive shafts in the end region can be widened elastically. In an operational state, in which the rotary pistons are arranged on the respective drive shafts, a frictional connection is formed between the respective seating of the rotary piston and the end region of the respective drive shaft.