Positive Rotary Lobe Pump ALB-Series

Positive Rotary Lobe Pump ALB-Series

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Lobe pump are similar to external gear pumps in operation in that fluid flows around the interior of the casing. Unlike external gear pumps, however, the lobes do not make contact. Lobe 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.

As the lobes 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 lobes as they rotate. Liquid travels around the interior of the casing in the pockets between the lobes and the casing — it does not pass between the lobes.

Finally, the meshing of the lobes forces liquid through the outlet port under pressure.

Lobe pump are frequently used in food applications because they handle solids without damaging the product. Particle size pumped can be much larger in lobe pump than in other PD types. Since the lobes do not make contact, and clearances are not as close as in other PD 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.

SR NO.PARTSMOC
1Pump ChamberSS-316
2Tri-Lobe RotorSS-316
3Top CoverSS-316
4ShaftSS-316
5Shaft SealMech. Seal
6GearEN-24
7CasingCI
8Back coverCI
9Bearing SpellerCI
10BearingSKF

Application Industry

OilMeats
Waste waterCanned Foods
SludgeBeverages
ChemicalsCandy
AsphaltDrugs
ExcretionsSyrup
PaintsCream
PolymersDressing
DairyCosmetics
BakeryFlavoring

Typical Characteristics

Front Loading Seals
Smooth Flow
Gentle Product Handling
Dry Running Ability
Efficient Transport and Dosing
Handles Low & High Viscosity Products
Outstanding Operation & Efficiency
Simple Maintenance
Hygienic Design
Low Sound Level

Capacity Chart

PUMP MODELPORT SIZESTANDARDDISPLACEMENT@100rpmMAX. SPEED (RPM)PRESSURE(Kgf/cm2)WEIGHT(Kg)
LPMUS. GPMHORIZONTAL PORTINGVERTICAL PORTING
ALB-100S1”51.4100071516
ALB-100L1”82.25100071718
ALB-150S1 ½”123.38100072830
ALB-150L1 ½”184.78100073031
ALB-200S2”267.03100075255
ALB-200L2”3810.15100075558
ALB-250S2 ½”5514.6410007104110
ALB-250L2 ½”7920.8710007109115
ALB-300S3”11630.656007150150
ALB-300L3”17544.396007158158
ALB-400S4”26168.705007258258
ALB-400L4”35493.265007264264

General Arrangement Drawing

MODELABCDEFGHJKLMNPRSTU
ALB-100 S/L1″14090175111637113305270/27843/49124701401008012
ALB-150 S/L1 ½”180115220122245145356327/33850/7013810015212510012
ALB-200 S/L2″216137270182858175458445/46783/8817612518015412514
ALB-250 S/L2 1/2″2801633151838752116310455/47393/10316315020018415014
ALB-300 S/L3″31521440530451102747514510/53088/10814521025024021014
ALB-400 S/L4″37023043530481103007514600/620100/12317223027224020016

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