A water pump, also called motor pump, is a machine that converts energy and use it to move water. This movement is usually an upward movement.
It exists different types of water pumps: "volumetric", "turbopump", etc. Motor pumps have an inlet orifice (draught) and an outlet orifice (impulsion).
There are motor pumps that move the water by a periodic variation of volume, and others have a rotating element to draw the water.
One of the essential elements of a motor pump is the rotor that usually has the shape of an helix or propeller and turns.
Water pumps can receive energy from different sources: wind energy, movement of the windturbine's blades transfered to a pump that extract water from a well, etc. When the pump is coupled with a motor (electric, diesel or gasoline) and receive its energy from it, we call the set a MOTOR PUMP. The motor can also be separated from the pump. But they lack of an element to transfer the movement. It can be a pulley, an axis, etc.