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Internal Gear Pump With Crescent

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Internal Gear Pump With Crescent

Internal Gear Pump With Crescent Send Enquiry Download catalogue

General Information :

Pumping Principle :

Proven Principle of Internal Gear is used in pumping. Rotor (Outer Gear) is keyed to drive shaft whereas idler (Inner Gear) is located eccentrically on a pin on the front cover. Both the gears are in mesh and the ports are sealed by a crescent located at the front cover. As the rotor and idler gear un-mesh, an under pressure is created and the liquid enters the new created cavities. Liquid is transported in sealed pockets to the discharge side. The walls of the pump casing and the crescent are creating a seal and separate suction from discharge side. The rotor and idler gear mesh pushing the liquid into the discharge line. Reversing the shaft rotation will reverse the flow through the pump as well.

Technical Data :

  • Port Size : 1” to 8”
  • Capacities : up to 4000 LPM
  • Pressure : up to 10 kg/cm²
  • Speed : 100-1440 RPM
  • Operating Temperature : up to 300 °C
  • Viscosity : up to 1, 00,000 cSt
  • Relief Valve : Integral / Optional
  • Jacketing : Optional-Cooling / Heating
  • Shaft Sealing : Gland Packing / Single or Double Mechanical Seal /Lip Seal / Magnetical Sealed – Seal less / Grafoil Rings
  • Mounting : Bracket / Gear Box (Block Pump) / Foot Mounted
  • Drive : V- Belt Drive / Gear Box / Geared Motor / Direct Drive /Mechanical Variator / with Built in Speed Reducer

Design Features :

  • Overhung Design on Shaft
  • Low NPSH Required
  • Pump & Rotor Clearances Optimized for Maximum Efficiency
  • Self-Priming
  • Back Pull Design
  • Bi Directional (in most cases)
  • Insensitive to Viscosity
  • Low Pulsating Discharge
  • Excellent for High Viscous Application
  • Single Adjustable End Clearance
  • Easy to Maintain
  • Flexible Design – Application Customized
  • All Metal Construction – No Contamination
  • Liquid with poor lubricating properties can be pumped easily
  • External Bearing enabling ease of access to pump
  • Can run dry for reasonable amount of time
  • Slow Speed offers better pumping and longer life
  • Improve Rotor Profiles for smooth Meshing minimizing Internal Losses and Excellent Suction Capabilities

Applications :

  • Chemical and Pharmaceutical Industry
  • Food Industry
  • Chemical Processing Plants
  • Iron & Steel Industry
  • Textile, Leather and Paper Industry
  • Rubber and Plastic Industry
  • Paint & Ink Industry
  • Tar and Bitumen Processing Industry
  • Wood Processing and Furniture Industry
  • Oil refining and Many More…

Material of Construction :

  • Casing : Cast Iron, Ductile Iron, Fabricated Steel, Stainless Steel
  • Rotors : Cast Iron & Steel, Stainless Steel
  • Shaft : Steel, Stainless Steel
  • Idler Pin : Steel, Hardened Steel, Coated, Stainless Steel
  • R.V. Parts : Cast Iron, Steel, Stainless Steel
  • Bush : Bronze, Gun Metal, Sintered Iron, Sintered Bronze, Carbon Graphite
  • Bracket : Cast Iron, Steel, Fabricated Steel

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