There are four main types of liquid filling principles:
Gravity filling
Overflow filling
Piston filling
Pump filling
Here's a brief explanation of each.
Gravity Filling
Gravity filling is the simplest type of liquid filling equipment. A container is placed on a platform, and the liquid flows into the container by gravity. This method is typically used for low-viscosity liquids.
Overflow filling
Overflow filling is similar to gravity filling, but the container is placed upside down on the platform. The liquid flows into the container until it reaches a pre-set level, and then the flow is stopped. This method is often used for viscous liquids.
Piston Filling
Piston filling involves using a piston to pump the liquid into the container. This method is suitable for liquids ranging from thin viscosities to thick. It can also be used for semi-solids and liquids with particulates.
Pump filling
Pump filling uses a positive displacement pump to fill the container. This method is suitable for both thin and thick viscosities, as well as semi-solids and liquids with particulates.
