Sihi Gmbh & Co Kg

Hermann Muller

Wilfried Lehmann

Ralf Mann

Peter Fandrey

Bodo Baranek

Centrifugal pump of the sectional-casing design

Centrifugal pump for the delivery of hot liquids

The invention relates to a self-priming centrifugal pump that consists of at least one fully-loaded pump or turbine stage with a horizontal shaft and one priming or ventilator stage that is fixed to the same shaft outside the main delivery stream, in the form of a lateral channel or liquid ring pump. In certain specific applications there is no flow through the ventilator stage during normal operation of the pump, and for this reason the ventilator stage is not cooled. The ventilator stage is cooled by virtue of the fact that the suction side of this stage is not only connected to the suction area of the fully loaded turbine stage, in which the gases that are to be removed usually collect, but is also connected to the pressure side of the pump, so that during normal operation a stream of liquid that has a cooling action is formed, and this passes by the suction opening of the ventilator stage.

Self-priming pump

A rotary pump assembly including a pump having a pump housing, a pump shaft disposed within the pump housing, a runner mounted concentrically on the pump shaft, a motor having a motor housing, and an intermediate housing interconnected between the pump- and motor-housings. The pump shaft has an end facing the motor, and the pump shaft end is formed as a hollow shaft fittingly mounted on the motor shaft. A bearing support is disposed in the intermediate housing for supporting the hollow pump shaft end, and is formed as an axial bearing with substantially no radial bearing capacity.

Rotary pump assembly

Growing community of inventors

Oldendorf, Germany

Hermann Muller