Liquid Pumps

Liquid Pumps

Liquid pumps are typically constructed of three main parts: a pump head, a cylindrical body and a piston. The required pressure is generally created by a piston that moves in and out of a cylindrical chamber. As it moves out of the chamber, it creates a vacuum which in turn puts pressure on the liquid in the metering system and moves it through the pump head from the inlet line. When the piston reenters the chamber, it pressurizes the liquid forcing it through the outlet line. The inlet and outlet valves only allow the liquid to move in the desired direction and prevent contamination or backflow into the system. The piston is typically powered by an electric motor that enables its linear motion, and this can be fitted with either manual or automatic control systems. For applications which require consistent flow of liquid, heavy duty automatic control systems are the most ideal solution.

Many different fluids are carried using liquid pumps, from chemicals, corrosive liquids, viscous fluids, slurries to suspended solids. However, one of the most common liquid pump applications is the transportation of water for drinking, cleaning, and irrigation purposes. Metering equipment components can be added to pumps to improve the maintenance of pressure, the prevention of damage due to leaks or siphoning and to ensure the precision of the pumping amounts. Although electric motors most commonly provide power to the system, liquid pumps can also be powered by solar panels, windmills, or batteries. Liquid pumps are used for a variety of applications and can take on many different designs such as rotary pumps or screw pumps which are positive displacement pumps, or hydraulic pumps, dispensing pumps and peristaltic pumps to name a few. Volume of liquid to be handled, length of operation duration and the specifics of the power source all need to be considered when determining upon the best type of pump to meet a liquid pumping need. The mechanical construction of liquid pumps is relatively simple and so they should be low maintenance pieces of equipment. However, wear and tear over time will result, and therefore periodical maintenance and/or replacements of parts will be necessary.