A type of pump used to shift fluids in machines or industrial equipment is a gear pump. Gear pumps generally can be classified into two main types, the internal and external gear pumps., we will discuss the concept on how internal Gear Pump work.
Internal gear pumps use gears that rotate within a housing. The gears are of different sizes, the one having a smaller dimension and being assembled into the other one. As the gears turn, they form voids which allow the trapped fluid is carried to the discharge side of the pump. This in turn serves to displace the fluid from the inlet of the pump to the outlet for use as appropriate.
External gear pumps are also found in industrial applications. The pumps of this type have gears situated externally to the housing, one of the gears being connected to the drive shaft and the other gear being driven by the first. That design permits greater flow rates and pressures than those available with an equivalent internal gear pump. One of the primary advantages of external gear pumps for industrial applications is their ability to synthesize a wide range of fluid viscosities. That also makes them suitable for numerous industries as they’re ideal with thin and thick liquids.
There are a few differences when it comes to comparing internal vs External Gear Pump in terms of efficiency and performance. Internal gear pumps are quiet and can handle high viscosity fluids, and allow you to pump fluids at high temperatures. On the downside, however, external gear pumps traditionally have been ‘high flow low pressure’ pumps, which simply means they can usually move a LOT of fluid at a time when compared to other pump types while getting the ‘water’ to a desired destination much faster.
When it comes to efficiency, internal and external gear pumps each have their own strengths. Internal gear pumps are better suited for thin liquids such as gasoline and alcohol, and they are quieter running; however, they do not offer the same volume capacity as external gear pumps. In the application however, the selection between the two types of gear pumps will be determined by the application requirements.
Internal and External Gear Pumps Design Variations preamble The following tutorial gradually explores the various types of design that can be created inside the common realm of gear pumps as an Internal Gear Pump or external gear type.