ROTARY PISTON PUMP, METHOD FOR FIXING ROTARY PISTONS OF A ROTARY PISTON PUMP, AND METHOD FOR DISMANTLING ROTARY PISTONS OF A ROTARY PISTON PUMP

摘要

The invention relates to a rotary lobe pump with at least two arranged in a pump space to drive shafts, in opposite directions rotating rotary piston. The rotary pistons each comprise a receptacle for the drive shafts. The respective drive shaft is arranged and fixed with an end region in the receptacle of the respective rotary piston. According to the invention, a diameter of the drive shafts can be elastically expanded in the end region. In an operating state in which the rotary pistons are arranged on the respective drive shafts, a frictional engagement is formed between the respective receptacle of the rotary piston and the end region of the respective drive shaft. Furthermore, the invention relates to a method for fixing rotary piston in a rotary piston pump and a method for disassembling rotary piston of a rotary piston pump described above.