What is a Pump from jiachuan's blog

What does pump mean?
A pump is a mechanical device used to force a fluid (liquid or gas) forward in a pipe or hose. They are also used to create pressure by creating suction (partial vacuum), which causes fluids to rise to greater heights.

There are many types of pumps, including:
Positive Displacement Pump - Also known as a constant flow machine because the volume of fluid being displaced remains constant during each operating cycle of the pump. This means that this type of pump produces the same fluid flow at a given speed (rpm) regardless of the discharge pressure. These pumps are further divided into:
Rotary positive displacement pump or rotary pump. They include gear pumps, screw pumps and rotary vane pumps.
Reciprocating positive displacement or reciprocating pumps. They include piston pumps, diaphragm pumps, piston pumps and radial piston pumps.
2. Velocity pumps – These pumps increase the velocity of the fluid they pump and are further classified into axial flow pumps, radial flow pumps and mixed flow pumps.