Sanitary 2" Rotary Lobe Pump for High-Viscosity Liquid

Rotary Pump OverviewRotary pumps are used in a variety of industries including, pulp and paper, chemical, food, beverage, pharmaceutical, and biotechnology.  They are popular in these diverse industries because they offer superb sanitary qualities

Technical Feature

  • 2000PCS Every Season
  • Wooden / Nylon
  • L/C, T/T, Money Gram, Western Union
  • Oil
  • Rotary Vacuum Pump
  • Positive Displacement Pump
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$0~900

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DETAIL DESCRIPTION

Rotary Pump Overview
Rotary pumps are used in a variety of industries including, pulp and paper, chemical, food, beverage, pharmaceutical, and biotechnology.  They are popular in these diverse industries because they offer superb sanitary qualities, high efficiency, reliability, corrosion resistance, and good clean-in-place and sterilize-in-place (CIP/SIP) characteristics.
These pumps offer a variety of lobe options including single, bi-wing, tri-rotary (shown), and multi-rotary.  Rotary lobe pumps are non-contacting and have large pumping chambers, allowing them to handle solids such as cherries or olives without damage.  They are also used to handle slurries, pastes, yogurt, cream, milk, shampoo and a wide variety of other liquids.  If wetted, rotary pump offer self-priming performance.  A gentle pumping action minimizes product degradation.  Rotary pump also offer reversible flows and can operate dry for long periods of time.  Flow is relatively independent of changes in process pressure, so output is constant and continuous.
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How Rotary Pumps Work
Rotary pumps are similar to external gear pumps in operation in that fluid flows around the interior of the casing.  Unlike external gear pumps, however, the rotarys do not make contact.  Rotary contact is prevented by external timing gears located in the gearbox.  Pump shaft support bearings are located in the gearbox, and since the bearings are out of the pumped liquid, pressure is limited by bearing location and shaft deflection. 
1.  As the rotarys come out of mesh, they create expanding volume on the inlet side of the pump.  Liquid flows into the cavity and is trapped by the rotarys as they rotate.
2.  Liquid travels around the interior of the casing in the pockets between the rotarys and the casing -- it does not pass between the rotarys.
3.  Finally, the meshing of the rotarys forces liquid through the outlet port under pressure.

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Rotary Pump Specification

ModelZ-3Z-6Z-8Z-12Z-20Z-30
Displacement  L/100rpm368122030
Speed range rpm200~500200~500200~500200~500200~500200~400
Corresponding flow L/H300-800650-1600850-21001300-32002100-54003200-6400
Moroe power Kw0.550.751.52.234
Orifice Size  mmΦ25×1.5Φ25×1.5Φ25×1.5Φ32×1.5Φ38×1.5Φ50.8×1.5
SizeL71078085098010001050
H290390400450450480
H1150170170185190220
W150190190220250270
W1240240280330330350
TipsThe specification listed here only for reference.
 
Rotary Pump Usage and Applications
Rotary pumps are frequently used in food applications because rotary pumps handle solids without damaging the product.  Particle size pumped can be much larger in rotary pumps than in other sanitary pumps.  Since the rotarys do not make contact, and clearances are not as close as in other pumps, this design handles low viscosity liquids with diminished performance.  Loading characteristics are not as good as other designs, and suction ability is low.  High-viscosity liquids require reduced speeds to achieve satisfactory performance.  Reductions of 25% of rated speed and lower are common with high-viscosity liquids.
Common rotary lobe pump applications include, but are not limited to:

  • Polymers
  • Paper coatings
  • Soaps and surfactants
  • Paints and dyes
  • Rubber and adhesives
  • Pharmaceuticals
Rotary Pump Food Applications: 
Food products such as corn syrup, chocolate, and peanut butter

Food and cosmetic products capable of being pumped by rotary rotor pumps
Alcohol
Apple purée
Apricots
Baby food
Batter
Beans
Beer
Beetroot
Biscuit Cream
Blackcurrants
Brine
Broth
Butter fat
Caramel
Castor Oil
Cat food
Cheese curd
Cheese whey
Cherries
Chicken paste
Chili con carne
Chocolate
Chutney
Cockles
Coconut oil
Cod oil
Coffee liquor
Cordials
Corn oil
Corn syrup
Cottage cheese
Cotton seed oil
Cranberry juice
Cream
Cream cheese
Custard
Dog food
Dough
Eggs - whole
Egg yolk
Essences
Evaporated milk
Fish
Flavorings
Fondants
Fruit juice
Fruit pulp
Fruit - whole
Fruit yogurt
Gelatin
Gherkins
Glucose
Glycerin
Gooseberries
Gravy
Hand cream
Honey
Horseradish
Ice cream
Icings
Iodine ointment
Jams
Jelly
Ketchup
Lard
Liquid sugar
Lotions
Malt
Maple syrup
Margarine
Marmalade
Marshmallow
Marzipan
Mascara
Mayonnaise
Milk
Mincemeat
Molasses
Mousse
Mussels
Mustard
Nail polish
Nail varnish
Offal
Olive oil
Onions
Palm oil
Pastes
Peanut butter
Pectin
Perfumes
Piccalilli
Pie fillings
Pizza toppings
Plasma
Potato salad
Preserves
Purées
 
Rice pudding
Salad dressing
Shrimps
Soap
Solvents
Sorbitol syrup
Soup
Soya sauce
Spirits
Starches
Stews
Strawberries
Sugar
Syrup
Tapioca
Tea
Tomato ketchup
Tomato paste
Tomato purée
Toothpaste
Vaseline
Vegetables
Vinegar
Water
Wines
Wort
Yeast
Yogurt
From Dickenson, T. C. 1995. Pumping Manual, 9th Ed. Elsevier Advanced Technology: Kidlington, Oxford, U.K.
Advantage and Disadvantage of Rotary Pump
AdvantagesDisadvantages
Pass medium solidsRequires timing gears
No metal-to-metal contactRequires two seals
Superior CIP/SIP capabilitiesReduced lift with thin liquids
Long term dry run (with lubrication to seals) 
Non-pulsating discharge 
Rotary Pump Construction Material / Configuration Options
  • Externals (head, casing) -SUS304 or 316 stainless steel head and casing
  • Externals (gearbox) - Cast iron, stainless steel
  • Internals (rotors, shaft) - SS304 or 316 stainless steel, non-galling stainless steel
  • Shaft Seal - O-rings, component single or double mechanical seals, industry-standard cartridge mechanical seals
Rotary Pump Conclusion 
Rotary pumps are used in a wide range of applications -- liquids, slurries, and pastes. Each revolution of the rotary pump shaft will displace a constant quantity of liquid which makes rotary pump a popular choice for liquid metering applications.  Rotary Pump can accommodate thin to high viscosity liquids, high vacuums to high pressures, and minute doses to high capacities.  
Rotary pumps are available in a number of different pumping principles, each with its own unique set of advantages and disadvantages.
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Rotor Pump | Rotary Pump | Drum Pump | Lobe Pump
Sanitary Positive Displacement Pump | Sanitary Positive Placement Pump
Rotary Pumps are exceptionally versatile. While they are often used on thin liquids such as solvents and fuel oil, they excel at efficiently pumping thick liquids such as asphalt, chocolate, and adhesives.  The useful viscosity range of an internal gear pump is from 1cPs to over 1,000,000cP.
In addition to their wide viscosity range, the pump has a wide temperature range as well, handling liquids up to 750ºF / 400ºC.  
Offer Rotary Pump / Rotary Pump Price
For more details information of our rotary pump, please get in touch with us directly: 
 
 
 

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