Netzsch Pumpen & Systeme Gmbh

Netzsch-mohnopumpen Gmbh

Bernhard Murrenhoff

Johann Kreidl

Reinhard Denk

Hisham Kamal

Mikael Tekneyan

Stefan Weigl

Franz Kneidl

Robert Kurz

Josef Strassl

Erwin Weber

Thomas Boehme

Marcel Verhoeven

Stefan Kern

Roger Willis

Matthias Gradl

Gunther Herr

Udo Enderle

Thomas Schmitt

Mathias Gradl

Gunter Herr

Hans Juergen Linde

Christopher Martin Gwalchmai

Thomas BÖHME

Hans Jürgen Linde

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

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

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Buchbach, Germany

Bernhard Murrenhoff