Netzsch Pumpen & Systeme Gmbh

Thomas Schmitt

Stefan Weigl

Franz Kneidl

Erwin Weber

Johann Kreidl

Hisham Kamal

Mikael Tekneyan

Matthias Gradl

Reinhard Denk

Gunther Herr

Robert Kurz

Josef Strassl

Bernhard Murrenhoff

Markus Rosam

Thomas Boehme

Roger Willis

Philipp Nübl

Stefan Kern

Marcel Verhoeven

Stefan Voit

Horst Engl

Achim Dehnz

Dominik Hindera

Mathias Obermaier

Stefan Schöberl

Dominik Sinseder

Herbert Brunner

Stefan Schoeberl

The invention relates to an eccentric screw pump, including a rotor, which forms a conveying screw, and a stator, which forms a screw flight and in which the rotor rotates during conveying operation, wherein: the stator includes a stator housing, in which a stator lining is disposed, the stator lining reproducing the screw flight; the stator lining is a sleeve which is supported, at its outer periphery, on the stator housing by means of a support structure which forms cavities; the support structure is designed and dimensioned, in accordance with the location of its connection to the sleeve, in such a way that the supporting effect provided by the support structure is matched to the local needs of the sleeve.

Eccentric screw pump having a stator linking which is simpler to produce

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.

Rotary piston pump, method for fixing rotary pistons of a rotary piston pump and method for dismantling rotary pistons of a rotary piston pump

A rotary piston pump with at least two double- or multi-lobe rotary pistons rotating in opposite directions, the drive shafts whereof include seals, wherein the seals are constituted as slip ring seals or lip seals or stuffing-box seals, which in each case are disposed on the shaft shoulder belonging to the respective rotary piston, and one slip ring per seal is provided with a locking device, which includes a large number of fixing positions. The seals are pushed onto a tubular shoulder of the rotary piston, the rotary piston is introduced into the pump housing, the securing element is connected to the slip ring seal in a form-fit manner by rotation of the rotary piston and the shaft shoulder is then rigidly connected to the drive shaft.

Rotary piston pump with slip ring seals for improved fitting and synchronization of rotary pistons

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Munich, Georgia

Thomas Schmitt