How Piston Filling Machines Work?

Piston filling machines work by using a two-stage process to accurately dispense a preset volume of product. First, a piston retracts to draw product from a hopper into a cylinder, creating a vacuum and a set fill volume. Then, the piston extends, forcing the product through a valve and out a nozzle into a container. This positive displacement method is highly reliable for filling various products, from thin liquids to thick pastes, and allows for precise, consistent dosing by adjusting the piston's stroke length.

Here's a breakdown of the cycle:

1. 1. Intake Stroke (Vacuum):
   • An intake valve opens, connecting the product hopper to the cylinder.
   • The piston moves backward, creating a vacuum and drawing a precise volume of product from the hopper into the cylinder.
   • This volume is determined by the cylinder's size and the piston's retracted position.
2. 2. Discharge Stroke (Dispense):
   • The intake valve closes, and a discharge valve opens, redirecting the product flow to the nozzle.
   • The piston then moves forward, forcefully pushing the product out of the cylinder and through the nozzle into the container.
   • The piston's forward stroke is precisely controlled, ensuring a consistent and accurate volume of product is dispensed in each cycle.

Key Features & Benefits:

• Volumetric Accuracy:
  The primary advantage is its ability to deliver a precise, repeatable volume of product.
• Versatility:
  Piston fillers handle a wide range of products, including high-viscosity liquids, pastes, and even products with chunky ingredients.
• Positive Displacement:
  The mechanical action of the piston ensures reliable and consistent filling.
• Adjustable Volume:
  Fill volumes can be easily adjusted by changing the piston's stroke length, typically via a touchscreen or manual dial.
• High-Speed & Multi-Head Options:
  Machines are available in single-head, multi-head, and automatic inline configurations to meet different production needs and speeds.