Netzsch Pumpen & Systeme Gmbh

Netzsch-Mohnopumpen Gmbh

Reinhard Denk

Johann Kreidl

Hisham Kamal

Franz Kneidl

Robert Kurz

Bernhard Murrenhoff

Mikael Tekneyan

Matthias Gradl

Stefan Weigl

Josef Strassl

Erwin Weber

Roger Willis

Marcel Verhoeven

Stefan Kern

Thomas Boehme

Gunther Herr

Uwe Neumann

Hansjuergen Linde

Udo Enderle

Markus Rosam

Helmuth Weber

Michael Robby

Matthias Schaefer

Thomas Schmitt

Mathias Gradl

Gunter Herr

Franz Lachenwitzer

Christopher Martin Gwalchmai

Josef Hauck

Alfred Thumser

Thomas Streubel

Karl-Heinz Rosner

Thomas Ribbe

Siegfried Jarzina

Guenther Hantschk

Guido Gutmann

Michael Groth

Christoph Boehnisch

Helmut Bauer

Tanja Donislreiter

Guenter Fischbach

Hans Juergen Linde

Thomas BÖHME

Hans Jürgen Linde

An eccentric screw pump for pumping fluids or flowing conveying media from a suction side to a pressure side, which includes a rotor and a stator, the stator being flexible and is connected to the pump housing on one side, in particular on the suction side. The rotor is connected to the drive shaft by means of an articulation. When the eccentric screw pump is in the idle state, there is no sealing contact at least in areas between the rotor and the stator in the sealing areas. When the eccentric screw pump is in the operating state, the stator is surrounded, at least in sections and/or, essentially, on the periphery by the conveying medium. The rotor and the stator are brought into contact with each other in the operating state along the sealing area.

Eccentric screw pump

A rotary piston pump for the delivery of liquids and for the delivery of liquids containing solids. The rotary piston pump includes a pump housing which is provided with an inlet and an outlet. The pump housing includes a lining. Disposed in the pump housing, or inside the lining, are at least two counter-rotating rotary pistons, which form pump spaces during their rotation. During the rotational movement, the rotary pistons are sealed against one another, against the pump housing and against the lining. Disposed in the pump housing and/or in the lining, in the spatial vicinity of the inlet and/or the outlet, are means with which the pulsation can be reduced or even completely prevented.

Rotary piston pump with optimised inlets and outlets

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

A method and a device for fixing and synchronizing rotary pistons in a rotary piston pump involves introducing the rotary pistons into the pump space of the rotary piston pump. A shaft stub of each rotary piston is then pushed through a pump rear wall onto a driveshaft provided for the respective rotary piston. The rotary pistons are aligned and synchronized in the pump space via a template, the template being fixed detachably to a pump housing. The shaft stubs of the respective rotary piston are connected, after the synchronization, in each case via a clamping device in a friction-locked manner to the respective driveshaft, outside the pump space.

Method and device for fixing and synchronizing rotary pistons in a rotary piston pump

A rotary piston pump equipped with a motor having two counter-rotating rotary pistons. The two rotary pistons are housed in an oval pump housing. The two rotary pistons are arranged on a first output shaft and a second output shaft. The first output shaft and the second output shaft are driven and synchronized via at least one elastic element.

Rotary piston pump and method for operating a rotary piston pump

The invention relates to a clamping device which clamps the pump stator with the pump housing and an additional pump end part. The width of the clamping bars is at least 20% of the cross section of the pump stator in order to stabilise the clamping device and the simplify handling. All parts which are required to clamp the pump end part remain on the clamping bars.

Stator clamping device for eccentric screw pump

The present invention relates to the arrangement of a stator and a spare stator. In order to avoid a permanent correction in the length of the driving shaft, the spare stator is connected to the instantaneously operated stator or is configured in a single piece. Upon occurrence of a defined amount of wear, this stator combination is merely reversed through 180&#xb0; relative to the longitudinal axis or an intermediate tube is inserted so that the spare stator arrives in the rotor region.

Eccentric screw-type pump with spare stator

An eccentric screw-type pump has a pump section with a tubular pump casing, a stator cladding and a pump cavity () configured in correspondence with a double-thread or multi-thread screw. A screw-type rotor is connected to a driving shaft via a flexible shaft. The flexible shaft is connected at its two ends via rigid coupler elements to the rotor and the driving shaft, and is surrounded by a preloaded coaxially disposed screw.

Eccentric screw-type pump

Growing community of inventors

Muehldorf, Germany

Reinhard Denk