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  Internal Gear Pump ( Series IG)  
 
 

The very first pump produced by TUSHACO in 1968 was an Internal Gear Pump Model R-1-G for low-pressure burner service - till this day it is in production with great success. Subsequently only TUSHACO had the foresight to introduce several other exotic designs, to take care of growing industrial demands, thus placing themselves on the forefront in the field of Rotary Positive Displacement Pumps. Experience gained over years in designing and building Rotary Pumps combined with knowledge in Application Engineering has resulted in this development of New Stainless Steel Internal Gear Series specifically for food, chemical and pharmaceutical industry. Computer aided designs, CNC in-house machining facilities and sophisticated test beds, together with TUSHACO dedication made instant success of the New Internal Gear "IG" series from day one.



Innovation, simple construction has ensured very easy maintenance and totally reliable hassle  free installation. A glance at the reference list of scores of pumps delivered for New Food  Processing and Industrial projects within a short period is a silent testimony for TUSHACO  performance.

Working Principle

TUSHACO IG series employs proven Internal Gearing (Gear within Gear) principle for pumping. The main gear is keyed to the drive shaft, and rotates concentric in the pump casing. Idler is located on an eccentric pin on the front cover to rotate freely and meshes with main gear when assembled. A crescent shaped partition precision machined on the front cover maintains a small, but positive clearance to achieve perfect scaling between parts. As the gears come out of mesh, a partial vacuum is created, forcing the fluid to rush into the pump casing and fill in the voids between the teeth. Both gears rotating in the same direction of rotation gently transfer the fluid to the delivery port. The resulting action is a smooth-steady flow; low in pulsation, noise and vibration.

Single shaft design well supported on outboard bearing (except for one inside sleeve bearing) enables to pump products even with poor lubricating value unlike in the external gear pumps. External bearing construction offers easy access the pump components i.e., rotor set and even pump casing simply by removing the front cover without disturbing drive parts, bearings etc., and in place. Block pump mounted integrally on hollow shaft gearbox automatically reduces the speed (in several ratios) and enables even the pump rotor to be pulled out without disturbing the drive! It is easily possible to jacket front and rear covers for products heating - thus making the design unique and versatile - ideally suited for process pumping.

Salient Features

Smooth quite flow

Reversibility

Excellent self priming

Bracket/ Gear box mounting allows free expansion/ contraction - alignment not affected

Insensitive to viscosities

Easy maintenance

All metal construction, no contamination

Built-in reducer offers ideal speed range 240~960 RPM

Single sealing, external bearing

Slow speeds ensure better pumping & longer life

Low noise and pulsation

Reduced maintenance

Construction

The IG series is modular developed with excellent interchangeability. The pump is available either as bracket mounted 'BM' or gearbox mounted 'GM" models. The bracket mounted casing construction provides stress free operation while handling products at higher temperatures. The major components are casing, front cover, rear cover, seal box (casing parts) and rotor set (rotor, idler and shaft). Most casing components are made by lost wax process for better finish and grain structure.

'GM' version offers a choice of different speed ratios, making it easy to handle viscous products besides eliminating problems of alignment, extra set of coupling. Standard 4 pole or 6 pole motors can be directly coupled to such units making it very reliable, compact and clean  drive. Another unique feature is the adjusting clearance between rotor set and cover by means of rotor positioning device enabling to restore pump capacity even after wear and tear after a long use.

Pumps can be equipped with Heating/ Cooling Jacket on front cover/ rear cover and in some  cases also Pump Housing. Choice of Mechanical Seal/ Stuffing box is available for shaft sealing.

Typical Parameters

Capacity upto 800 LPM
Pressure std. upto 7 kg/cm2
Pressure spl. upto 14 kg/cm2
Viscosity upto 100,000 cSt
Temperature upto 200°C

Typical Liquid List

Baby Foods

Fruit Concentrates

 Lecithin

 Soap

Batter

Fruit Drinks

 Lotions

 Soups

Butter

 Fruit Fillings

 Margarine

 Starch

Caramel

Fruit Puree

Mayonnaise

 Sweeteners

Chewing Gum Base

 Fudge

 Molasses

 Syrups

Chocolate

 Gelatin

 Oils

 Soft Drink   Concentrate

Coffee

 Glucose

 Peanut Butter

 Tomato Puree

Cookie Dough

 Gums

 Printing Ink

 Tomato Paste

Cottage Cheese

 Honey

 Pudding

 Tooth Paste

Curd

 Ice Cream

 Putty

 Wheat Gluten

Extracts Flavoring

 Icing

 Red Chilly Paste

 Whey

Fondant

 Jams

 Salad Dressings

 Yeast

Fats

 Jellies

 Sauce

 Yeast Slurry

Frostings

Ketchup

 Shampoos

 Yogurt

 
 

 
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