The offer of oil pumps is very wide. However, you should be aware that not every model will meet certain expectations. For this reason, it is worth knowing the basic categories of oil pumps. One of the most common divisions concerns technological issues. In relation to this, we can distinguish gear, centrifugal, arc and vane pumps.
Gear pumps
This is it pump rotary displacement and may have internal or external gearing. Gear pumps are characterized by simple construction, constant performance, ease of use and reliability. They work on the principle of sucking in liquid, which is then pumped further using gear wheels. To drive it, you just need to set one gear in motion, and it will avalanchely move the others. The pump may have from two to five gears. It operates with constant efficiency and its speed ranges from 500 to 900 wheel revolutions per minute.
Centrifugal pumps
These are pumps that operate on the principle of an impeller that rotates at a constant speed, causing suction at the inlet and excess pressure on the discharge side. Moreover, thanks to the use of centrifugal force and buoyancy, it ensures continuous flow of liquid. Centrifugal pumps are characterized by simple construction, low failure rate, low operating costs, high efficiency and relatively small size. They are increasingly used and are replacing gear pumps from the market. Their disadvantages include the lack of self-priming and low resistance to contamination in the pumped liquid.
Arc pumps
These pumps have many applications and are designed to pump almost any liquid. The arc pump is composed of two elements - the pumping pipe and the drive. As the liquid flows through the pipe, the impeller is set in motion and the liquid is pumped to the surface. Arc pumps are characterized by ease of use, the ability to pump liquids of various viscosities and low weight.
Vane pumps
They operate on the principle of an impeller equipped with blades which, during pump operation, capture the liquid and transfer it to the pump discharge chamber. Arc pumps are characterized by high efficiency (so smaller engines can be used than in gear pumps), quiet operation and high resistance to contamination of the pumped liquid.
