What is a gear pump used for?-www.catflo.com

What is a gear pump used for?

2021/05/25

Gear pumps are available in a range of designs, and each of these have various applications they are well suited to. As a type of Rotary Positive Displacement Pump, gear pumps use two rotating gears with teeth which intermesh. These gears work together to move fluids by creating a vacuum to draw it into the pump and then transfer it to the discharge. Gear pumps generally come in two types: internal and external. Each of these have different uses and benefits, so if you are wondering what gear pumps are used for, it ultimately depends on the type.

These pumps are classified into different types but some of the basic gear pump designs are classified into two types which include the following.

External Gear Pump
Internal Gear Pump

External Gear Pump Applications
An external gear pump is made up of two identical gears mounted on shafts and interlock together. One of these gears will be driven by a motor, and this then drives the second gear. In some gear pumps, both of the gears are motor-driven. Most of these pumps use spur gears, but other designs such as helical form or herringbone are also possible. Spur teeth are the easiest to manufacture but also slightly less efficient than other options. Because of external gear pumps’ design, they are not as efficient for moving thin fluids as they rely on fine clearances. Spur gear pumps will handle thin fluids better than other options.
External gear pumps are often used when high pressure is required. Some typical uses for external gear pumps include:

Fuel oils and lube oils
Chemical additives
Chemical mixing or blending
Acids
Hydraulic applications (industrial, agricultural and mobile)
Solvents
Alcohols

Internal Gear Pump

An internal gear pump works on a similar principle except the two linking gears sizes are different with one revolving within the other. The rotor is a larger gear and also an inner gear, and it has the teeth projecting inside. A minor external gear is mounted, and this is mainly designed for linking by the rotor so that the teeth of the gear connected at a single end. A bushing and pinion can be connected to the pump case that holds the idler within the location.

Internal gear pumps are often used for high viscosity liquids. Some typical uses for external gear pumps include:

Fuel oils and lube oils
Polymers and resins
Bitumen, asphalt and tar
Food products including peanut butter, cacao butter, sugar, chocolate, corn syrup, vegetable fats and oils.
Inks, paints and pigments