A metering pump delivers precise amounts of liquid or gas into a system. Here’s an explanation of how it works:
- Liquid source: The pump receives liquid from a source, such as a tank.
- Dosing chamber: The liquid enters a dosing chamber through an intake valve.
- Thrust mechanism: A piston or diaphragm pushes the liquid into the chamber, dosing the precise amount needed.
- Outlet valve: The metered liquid is released through an outlet valve into the destination system.
These pumps are used in industries such as chemical, food and water treatment for their precision and reliability.
Metering pumps offer several advantages:
- Precision: They ensure accurate dosing of liquids or gases, which is essential in sensitive industrial processes.
- Efficiency: They automate dosing, reducing human errors and improving the consistency of the final product.
- Safety: Minimize direct contact with potentially hazardous substances, protecting operators.
- Flexibility: Can be easily adjusted to dose different quantities and types of substances in various processes.
- Reliability: They are designed to last a long time with minimal maintenance, reducing downtime.
These advantages make metering pumps indispensable in many industrial applications.
Choosing the right metering pump depends on several factors. Here are some key steps to consider:
- Flow Rate: Determine the amount of liquid that must be dosed per hour (expressed in liters per hour, l/h).
- Back Pressure: Evaluate the pressure that the pump must overcome to deliver the liquid (expressed in bar).
- Liquid Type: Consider the viscosity and chemical properties of the liquid to be dosed.
- Operating Environment: Make sure the pump is suitable for the operating conditions, such as temperature and humidity.
- Compatibility: Check that the pump is compatible with your existing system and other equipment.
- Maintenance: Consider ease of maintenance and availability of spare parts.
A good dosing pump should be accurate, reliable and easy to integrate into your system.
