Rotary piston pump

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The articles rotary pump , Roots blower , Roots and rotary piston pump overlap thematically. Help me to better differentiate or merge the articles (→  instructions ) . To do this, take part in the relevant redundancy discussion . Please remove this module only after the redundancy has been completely processed and do not forget to include the relevant entry on the redundancy discussion page{{ Done | 1 = ~~~~}}to mark. Jahobr ( discussion ) 19:17, 20 Mar. 2017 (CET)


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Terms unclear & real rotary piston pumps are completely absent here: instead, a Roots compressor or Roots blower is apparently described here, i.e. not a rotary piston machine , but a rotary piston machine because the piston itself rotates directly on the shaft! ➯ This article content should be incorporated under Roots compressor ... → see discussion: Rotary piston pump
Rotary lobe pump ( Roots blower )
intermeshed rotary lobes (1,3) in the housing (2) a: fluid inlet, b: transport, c: outlet
Rotary lobe pump ( Roots blower )
The helical shape of the rotary lobe ensures an even flow

Rotary piston pumps are positive displacement pumps . In the functional sketch, the pumped medium (c) is being pressed out of the pump by the rotating piston at the moment shown. If the pistons continue to rotate, will

  1. the pumped medium is conveyed from the divided chamber (b) to the outlet
  2. pending fluid (a) separated from the inlet by the first rotary piston
  3. and then conveyed to the outlet above this piston.

The two curved rotary pistons run without contact in cylindrical, dead space-free chambers of the pump housing.

The shear forces acting on the pumped medium are low in this design. This results in a gentle, low-pulsation conveyance of low to high viscosity media, including those with solids (e.g. unshredded fruit).

In pumps for the food industry, the interior of the pump and all parts that come into contact with the pumped liquid are usually designed in such a way that they can be cleaned residue-free by means of continuous flushing without dismantling ( CIP cleaning ).

See also

Web links

Commons : Roots blowers  - collection of images, videos and audio files