Benefits and Types Of Gear Pumps

June 04, 2015/0 Comments

Gear pumps are the pumps that are used to positive displacement of fluids by the use of gears. These are based on the simple phenomenon of the interlocking of the gear in order to pump the fluid by displacement. These are best suited pumps for the hydraulic fluid power applications. These pumps are highly efficient in pumping high viscosity fluids and chemical mixtures. These pumps are of two variants, the first one is the external gear pumps the come with two external spur gears, while the second one is internal gear pumps, which comes with an external and an internal spur gear.

Benefits and Types Of Gear Pumps

These pumps come with a capacity of pumping in microliters per four to 345 m3/hour. The maximum discharge pressure that can be achieved is from 8.7 bars to 150 bars. The discharge pressure depends on the nature of the fluid being pumped and the duty required. Gear pumps are designed to provide smooth and accurate positive displacement of the fluids at various temperature and viscosities. It is efficient in pumping thin liquids as well as highly viscous liquids. These pumps come in various configurations and types, depending upon your requirement you can pick one among these:

  • HNPM Internal Gear Pump

These pumps are developed for pulse-free, accurate, precise pumping and dispensing of a wide range of fluids of both high and low viscosities. These pumps are extensively used in the pharmaceutical industry, chemical industry, biotechnology, aerospace, analytical instrumentation and many more.

  • SG Series External Gear Pumps

These pumps are highly efficient for high pressure pumping in low capability conditions. These pumps have longer bearing and seal life because of the minimal movement of the shaft, as the seal leakage is the most common cause of the pump downtime. Misalignment and radial movement in these pumps is eliminated by close coupled motor mounts. These pumps offer a great deal of reliability in industrial processes.

  • Internal Gear Pumps

These pumps come with a wide range of choice of the wetted material. Different varieties of seals and port options are also available with such type of pumps. The maximum pumping capacity that can be achieved by using such pumps is 345 m3/hour, while maximum differential pressure can be up to 17 bars. It is capable of pumping and dispensing a wide range of fluids of different viscosities ranging from 1 to 440000 CST. The maximum temperature at which the pump can work efficiently is 425°C.


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