Simple Principle

The basic principle of the peristaltic 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 occlude some 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 Rotho Pump

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 con tamination 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.

Advantages

• No seals
• No valves
• Self priming
• Only tube to replace
• Reverse flow by reversing motor
• No contact between product and mechanical parts
• Can run dry without damage
• Able to pump products with solid parts inside
• Suitable for CIP applications

Uses

• Fragile or sensitive fluids
• Compound fluids
• Abrasive and corrosive fluids
• Non pollutable or pollutant fluids