Sanitary Pumps
Milk Pump
Sanitary centrifugal pump for milk beer and beverage transfer.
View specifications →Sanitary Pumps
Rotary Lobe Pump
Two lobe rotors turning in step without touching, carrying product through the pump in defined cavities instead of throwing it off an impeller.
Overview
What This Pump Does
The rotary lobe pump is a positive displacement pump of sanitary design for dairies, food processing, beverage, pharmaceutical and fine chemical work. Two lobe rotors rotate synchronously inside the casing without contact, dividing the chamber into cavities that carry the medium to the outlet continuously.
Because the rotors never touch and the product is carried rather than accelerated, fluids containing fragile solids such as junket can be pumped without damage, at low or high viscosity.
| Connections | clamp, SMS |
|---|
Key Benefits
What A Lobe Pump Does For The Product
Fragile Solids Survive
Specially designed lobes carry particulate through the pump without crushing it, which a centrifugal impeller cannot do.
Viscosity Is Not A Problem
Positive displacement action moves low or high viscosity fluid at the same steady rate.
Continuous Delivery
The rotor chambers deliver product continuously rather than in pulses, which suits filling and metering duty.
Sanitary Design
Built for dairies, food processing, beverage, pharmaceutical and fine chemical use, with clamp and SMS connections.
Application Scenarios
Where It Is Installed
Dairy And Cultured Product
Moving cultured and set products where a centrifugal pump would break the structure.
Filling And Bottling
Feeding filling lines at a steady rate, including filtering and bottling applications.
Cosmetics And Fine Chemicals
Creams, gels and fine chemical products that must not be sheared in transfer.
Who It Is For
- Dairies handling cultured and set product
- Food plants with sauces, fillings and preparations
- Cosmetics manufacturers
- Fine chemical producers needing sanitary construction
Problems It Solves
Product structure is destroyed in transfer
Carrying the product in cavities rather than accelerating it protects emulsions, cultures and particulate.
Thick product will not move
A centrifugal pump loses head as viscosity rises. A lobe pump keeps displacing the same volume per revolution.
Flow pulses upset the filler
Synchronised rotors deliver continuously, which keeps fill volumes inside tolerance.
Technical Features
How It Is Built
- Two synchronised lobe rotors running without contact
- Positive displacement, continuous delivery
- Sanitary design for dairy, food, beverage and pharmaceutical duty
- Clamp and SMS connections
- Lobes designed to carry fragile solids undamaged
- Stainless wetted parts
Specifications
Technical Data
Published product data. Lobe pump selection depends on viscosity and differential pressure, so send both rather than flow alone.
| Connections | clamp, SMS |
|---|
| Model | Displacement | Suggested Speed RPM(r/min) | Norminal Capacity | Electrical power | Inlet and outlet | Max.pressure |
|---|---|---|---|---|---|---|
| (L/100 rev.) | (L/H) | (KW) | (inch) | (Bar) | ||
| SKSL-3 | 3L | 200-500 | 300-800 | 0.55 | 1 | 1 |
| SKSL-6 | 6L | 200-500 | 650-1600 | 0.75 | 1 | 1 |
| SKSL-8 | 8L | 200-500 | 850-2100 | 1.5 | 1.2 | 2 |
| SKSL-12 | 12L | 200-500 | 1300-3200 | 2.2 | 1.5 | 3 |
| SKSL-20 | 20L | 200-500 | 2100-5400 | 3 | 1.5 | 4 |
| SKSL-30 | 30L | 200-400 | 3200-6400 | 4 | 2 | 5 |
| SKSL-36 | 36L | 200-400 | 3800-7600 | 4 | 1.5 | 6 |
| SKSL-52 | 52L | 200-400 | 5600-11000 | 5.5 | 2 | 8 |
| SKSL-66 | 66L | 200-400 | 7100-14000 | 7.5 | 2.5 | 8 |
| SKSL-78 | 78L | 200-400 | 9000-18000 | 7.5 | 2.5 | 10 |
| SKSL-100 | 100L | 200-400 | 11000-22000 | 11 | 3 | 10 |
| SKSL-135 | 135L | 200-400 | 15000-30000 | 15 | 3.5 | 10 |
| SKSL-160 | 160L | 200-400 | 17000-34000 | 18.5 | 3.5 | 10 |
| SKSL-200 | 200L | 200-400 | 21600-43000 | 22 | 4 | 10 |
Materials And Process
What Goes Into Every Unit
Materials
- Stainless steel wetted parts
- Sanitary elastomers chosen for product and cleaning chemistry
- Polished internal surfaces
Manufacturing And Assembly
- Rotor and casing machining
- Assembly and clearance setting
- Running test before packing
- Documentation issued with the order
Quality Control
- Rotor clearances checked at assembly
- Running test before dispatch
- Factory acceptance test record available
Customization Options
- Clamp or SMS connections
- Elastomer selection for product and CIP
- Drive and speed reduction for the required flow
- Trolley or fixed base mounting
Compared With Other Options
| Sanitary centrifugal pump | The centrifugal pump moves thin product at higher flow and lower cost. The lobe pump protects viscous and shear sensitive product. |
|---|---|
| KRL rubber lobe pump | The rubber lobe pump is the industrial version for sludge and solids. This one is built to sanitary standards for food contact. |
Use Guide
Getting The Best From A Lobe Pump
Match Speed To Product
Lower speed with a larger pump usually handles fragile product better than a small pump run fast.
Protect Against Over Pressure
Positive displacement pumps build pressure against a closed valve. Fit relief protection or interlocks.
Never Run Dry
Rotor clearances depend on the product for lubrication and cooling.
Clean And Inspect
Strip the cover at planned intervals, check rotor faces and replace gaskets as a set.
Answers
Rotary Lobe Pump FAQ
What viscosity can it handle?
Low or high viscosity product. Send the viscosity at pumping temperature and the differential pressure and we will size the pump.
Will it damage particulate in the product?
The lobes are designed so fluids containing fragile solids such as junket can be pumped without damage.
Which connections are supplied?
Clamp and SMS connections are listed for this pump.
Can it run in both directions?
Lobe pumps can be run in reverse to empty a line, subject to the drive arrangement. Confirm the requirement at enquiry.
Is it cleanable in place?
Yes, the sanitary design is intended for CIP, with the cover removable for inspection.
Related Equipment
Related Equipment From The Same Line
Sanitary and industrial lobe options plus the fittings that connect them.
Rubber Lobe Pumps
KRL Rubber Lobe Pump
Rubber covered lobe rotors for liquid with lumps fibre and gas.
View specifications →
Sanitary Valves And Fittings
Tri-Clamp
Clamps SK-CL001 to SK-CL003 with gaskets to match the line.
View specifications →
Stainless Steel Tanks And Vessels
Mixing Tank
Jacketed vertical mixing vessel from 100 L to 5000 L with agitation.
View specifications →Need Rotary Lobe Pump Sized For Your Duty Point
Send the product, its viscosity and the differential pressure and we will size the pump and the drive.