Ragazzini Rotho Peristaltic Pump

//Ragazzini Rotho Peristaltic Pump
Ragazzini Rotho Peristaltic Pump 2018-03-07T12:00:42+00:00
Peristaltic pump

Ragazzini Rotho Peristaltic Pump

Ragazzini Rotho Peristaltic Pumps are at the cutting edge of “Hose Pump” design and have the features to make pumping easier. They consist of an elastomeric tube that is squeezed along its length by rollers that push the fluid contained within. This creates a gentle pumping action that doesn’t cause damage to the peristaltic pump. Further advantages include:

Features

Ragazzini Rotho peristaltic pumps have many features to make the pumping of viscous, abrasive or sensitive fluids as reliable and easy as possible – using the low friction roller bearing system.

There is no fluid in the casing, making maintenance easier and safer. Pump internals are easy to monitor and access through the Perspex pump cover. Hoses are also easy to replace, and leaks are easy to detect. CIP systems are also easy to implement with a Rotho.

The “Roller on Bearing Design”

Ragazzini Rotho pumps use the “roller on bearing” design because it offers many advantages. This design eliminates the need for a lubricating fluid inside the pump housing, because there is no friction on the surface of the hose. And because the friction is reduced, hose life is extended.

Less friction also means smaller drives, less installed power, and less power consumption.

Because there is no casing fluid, food [and other sensitive products] can be transferred without the danger of contamination. Leak detection is also much easier with a Rotho because there is no lubricating fluid mixing with the pumped fluid. All Rotho pumps (optional for the PSF Series) are equipped with a leak detector to provide early indication of hose failure. This is a float type sensor that is located at the lowest point of the pump housing. It only takes a small amount of pumped fluid to have leaked to trigger an alarm and/or stop the pump.

With no lubrication fluid, hose replacement is greatly simplified and cheaper without having to drain and dispose of a messy and possibly contaminated oil or glycerine solution.

Applications

Because Rotho pumps can handle highly viscous and/or highly abrasive and/or shear-sensitive liquids, they are suitable for a wide range of industrial, municipal or mining applications.
Hard to transfer fluids like ceramic pastes, slurries, sludge etc are easily handled by Ragazzini Rotho pumps. Whether transferring at 180m3/hr or 0.5 litres per hour, there is a Rotho to do the job.
Pressures to 15 BAR assist is applications with long or small diameter discharge lines or whose viscosity pushes friction losses high.
Typical applications are found in chemical plants, water and wastewater treatment plants, the food and beverage sector, paints, inks and paper industries, marine, biogas and mining.
Correct hose selection and pump speed are paramount whether transferring, dosing or metering. So Ragazzini’s 60+ years experience and wide range of hose selection put us in the right position to select exactly the right pump for each and every application.

 

Solids Pumping

Transferring fluids containing solid particles is easy with a Rotho. With hose diameters from 5mm through to 127mm diameter, solids can be passed through the pump.

Whether hard solids [like grave], stringy solids or sensitive solids in food transfer applications, Rotho pumps with free hose passages can handle the job. The Rotho pump is also a good choice for transferring sheer-sensitive fluids or foamy product because the non-emulsifying action of the pump minimises damage to the product or its consistency.

High Performance Pumps

Rotho peristaltic pumps are capable of operating on high suction lifts [to 7.5 metres], can produce high heads, provide a full seal when the pump is stopped and can deliver accurate dosing. Reversing flows are also possible by reversing the motor, and the pumps can run dry indefinitely without damaging the pump.

Being able to locate pumps above the fluid being pumped is a big advantage. It enables pumps to be easily accessed for maintenance and service and has the potential to save on capital costs because “dry pits” don’t need to be constructed to house the pumps.

Pressures to 15 BAR are possible with most Rotho models, which enables to pumps to operate with long or small discharge lines or overcome friction losses created by viscous products being pumped.

Easy Maintenance

Ragazzini Rotho pumps have been designed to be the easiest peristaltic pump on the market to service. The casing is not filled with glycerine, CIP or SIP systems are easily used, and hose replacement is easy.

No glycerine or lubricating fluid in the casing means no messy fluid to drain and dispose of when maintenance is needed, and no re-filling of casing. Because it is easy to retract or remove rollers, hoses are quickly able to be set-up to pass Clean-In-Place or Sanitise-In-Place fluids, and they are put back into operation just as quickly.

Hose replacement is also easy. Suction and discharge ports are removed, casing cover removed, roller disengaged, and the hose is ready to replace.

 

Easy Leak Detection

All Rotho pumps are equipped with a leak detector [optional for the PSF Series] to provide early indication of hose failure. This is a float type sensor that is located at the lowest point of the pump housing.

It is much easier to detect a leak with this system than if the casing was full of a lubricating fluid. And if the pumped fluid is a sensitive or dangerous fluid, early detection is best. There is also a greatly reduced chance of contamination of the pumped fluid if there is no lubricating liquid in the pump casing.

Retractable Rollers

Ragazzini’s “retractable roller” system makes hose changes very easy. The roller can be separated from the hose from the outside of the pump by activating the rapid release mechanism of the retractable roller, quickly and safely without opening the pump casing. The hose is then easily accessed after suction and discharge ports are removed.

This ability to retract the roller quickly makes CIP [Clean In Place] or SIP [Sanitise In Place] operations much quicker and easier.

When the pump is not in use for certain periods of time, pressure can be removed from the hose quickly. This will help increase the service life of the hose.

The retractable roller system is an option for Rotho pump models PSF1, MS0, MS1, MS2 and MS3. Those that are not fitted with it have a simple bolted system to remove rollers.

Operator Safety

Rotho pumps are perhaps the safest of all peristaltic pumps to operate. Their retractable roller hose replacement and CIP system required very limited “hands – on”.

Also, because Rotho pumps do not have lubrication filled casings, working on the pumps is cleaner and safer. And with fast leak detection, leaks of the pumped media are detected quickly.

Easy Access

Because Ragazzini Rotho pumps are self priming, they can be located at ground level, high and dry above the liquid level, making them easy to access for monitoring, service and repair.

The hose and rollers are also easily accessed through the removable Perspex cover.

The right hose for the right product

 Hose  Colour IdentificationBLEREDGREENYELLOWWHITEORANGEBEIGE 
Hose  mark NNNPEPRNRFHYPH
CompositionNATURAL ISOPRENESubstrate for food products NATURAL ISOPRENEMonomer Ethylene-Propylene
EPDM
Nitril-Butadiene Substrate for foods NBRNitril-Butadiene   For foods
NBR
Polyetylene Chlorosulphonate HYPALONPHARMED
Thermoplastic Elastomer-base. Polypropylene
 Thechnical features Multilayer hose with textile insert reinforcement.Multilayer hose with textile insert reinforcement.Multilayer hose with textile insert reinforcement.Multilayer hose with textile insert reinforcement.Multilayer hose with textile insert reinforcement.Multilayer hose with textile insert reinforcement.Omogeneous tube, without textile insert. 
TEMP.  C°-10   +85-10   +75-10   +95-10   +75-10   +75-10  +85-20   +135
PRESS.  BAR -0,9   +8 (15)-0,9   +6(8)-0,9  +8-0,9  +6(8)-0,9  +6(8)-0,9   +8 (15)-0,5  +1,5/2
Compatibility Excellent behaviour for abrasive liquids and moderately aggressive liquids and fluids for high pressure.Similar to NN type, suitable for
foods products.
Suitable for chemical use
and for relatively high pressure.
Suitable for oils, greases,
hydrocarbons and various solvents.
Suitable for alimentary use, oils and fats.Suitable for concen- trated acids, alkaline liquids.Suitable for alimentary and phar- maceutical products, (liquid).
Mechanical
characteristics
Resistance/Duration HIGHResistance/Duration HIGHResistance/Duration
MEDIUM
Resistance/Duration
MEDIUM
Resistance/Duration HIGHResistance/Duration HIGHResistance/Duration HIGH
 Hose available for all models.Hose available for all models.Hose available for all models.Hose available for all models.Hose available for all models.Hose available for all models.Available for PSF serie only.
Alimentary
classification
 FDA-CFR 21 Parts 170 to
199 Item 177.2600
  FDA 1777.2600 FDA 177. 2600 NSF
CRITERIA
DM 21-3.73  IV B 
For  cleaning:
C.I.P.  and   S.I.P.
Suggest
to  remove the  tube. 
 To sterilize whit water to 70° and solution  of 5% volume
surface-active agent, rinse with cold water.
Washing with steam to 120°,
for max. 3 minutes.
  To sterilize with water to 70° and solution  of 5% volume
surface-active agent, rinse with cold water.
Washing with steam to 120°,
for max. 3 minutes.
 To sterilize with hot water and neutral
nonoil soaps. Rinse with distilled water.
Possiblity to autoclave sterilization.