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The basic principle of the Peristaltic hose Rotho pump traces back to human “peristalsis” a term referring to the alternating contraction and relaxation of muscles around a tube to force the contents through it. An elastomeric tube is squeezed along a length by rollers that push the fluid contained within. The tube’s restitution after squeezing produces a vacuum that draws fluid continuously into the tube. This creates a gentle pumping action that doesn’t cause any damage to the product. Contaminations are avoided because the fluid is contained within the tube (one contact part with product).& The pump employs a rotor with rollers mounted on it that continually compress and occludesome portion of the tube. This action moves the fluid through the tube with a constant rate of displacement for each revolution of the rotor, enabling a precise measurement of the volume of fluid pumped through the tube.

The “roller on bearings” design of the Rotho pump offers many advantages:

  • It eliminates the requirement for adding a lubrication fluid inside the pump housing, because there is no friction on the surface of the tube therefore giving a longer tube life.
  • It requires smaller drives, so less power installed, compared to others peristaltic pumps, to get the same rpm and capacity.
  • They can transfer food products with no contamination hazards, as the pump housing is lubrication free.
  • With no lubrication fluid required, hose replacement is greatly simplified and cheaper without having to drain and dispose of a messy and possibly contaminated oil or glycerine solution.

Benfits:

  • Any contact between product and mechanical parts
  • Reverse flow by reversing motor
  • Can run dry without damage
  • Capable to transfer mixed phases without damages up to 45% of inner diameter
  • Capable to transfer sensitive products and pollutant products
  • Capable of pulling 98% of full vacuum
  • Valveless, sealless and glandless
  • Only tube to replace
  • Suitable for CIP application.

Ragazzini "Rotho" Peristaltic Pumps

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