Working principle and characteristics of Rotan gear pump high viscosity oil pump

1. Rotan Gear Pump Main Structure and Component Features:

Composed of a pump body, gears, bearings, bearing sleeves, bearing caps, seal assembly, pump base, 

main shaft, and main shaft sleeve.

This pump's inner and outer rotors offer pulsation-free delivery, minimal wear, and long rotor life. The

 alloy mechanical seal offers minimal wear and excellent lubrication. The copper sleeve is wear-resistant,

 heat-resistant, and corrosion-resistant, with excellent lubrication. The crescent plate is machined using 

high-precision, fully automatic CNC milling.

2. Working Principle of the Rotan Gear Pump:

The pump chamber is divided into a small gear on one side of a large gear and a crescent plate on the 

other side. The small gear rotates, driving the large gear. The crescent plate divides the pump chamber

 into a suction chamber and a discharge chamber. When the gear teeth separate, pressure is generated

 to draw liquid in. When the gears mesh, the liquid is squeezed out of the discharge chamber.

3. Features of the Rotan Gear Pump:

This pump uses internally meshing gears, so the internal and external gears rotate in the same direction. 

When pumping liquids with low impurities or lubricating properties, the gear life of the rotary pump is 

longer than that of conventional gear pumps. This pump also features minimal tooth wear, no pulsation, and low noise.

4. Suitable Media for Rotan Gear Pumps:

Cast Iron: Suitable for high-viscosity fluids free of metal particles and fibers. Suitable for conveying liquids 

with temperatures below 200°C and viscosities below 300,000 CST. Examples include lithium grease, paint,

 and crude oil.

Stainless Steel: Suitable for liquids free of metal particles and fibers. Suitable for chemical and food processing. 

Stainless steel rotor pumps are corrosion-resistant. Rotan high-viscosity gear oil pumps are widely used in the 

petroleum, chemical, pharmaceutical, and food industries due to their pulsation-free, corrosion-resistant, low-wear, 

and low-noise characteristics.

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https://www.dfinsewagepump.com/DESMI-ROTAN-Gear-Pumps.html