liquid filling machines are used to accurately and efficiently fill containers with various types of liquid products, such as beverages, sauces, chemicals, pharmaceuticals, and more. These machines are designed to handle different container shapes and sizes while ensuring precise fill levels. Here’s how a typical automatic liquid filling machine works:
Container Placement: Empty containers are loaded onto a conveyor or other feeding system and move towards the filling station. Containers can vary in size, shape, and material (e.g., bottles, cans, jars).
Filling Nozzles: At the filling station, the containers pass beneath a set of filling nozzles or heads. The number of nozzles can vary depending on the machine’s design and production requirements.
Product Reservoir: The liquid product to be filled is stored in a reservoir or tank located above the filling nozzles. The reservoir can be pressurized or unpressurized, depending on the specific requirements of the product.
Filling Process: The filling nozzles are lowered into the containers, and the liquid product is dispensed from the reservoir through the nozzles. The filling process can use different mechanisms, including gravity filling (for free-flowing liquids), piston filling (for thicker or viscous liquids), or vacuum filling (for foamy or volatile products).
Level Control: To ensure accurate fill levels, the machine may use various methods to monitor and control the liquid level, such as electronic sensors or mechanical float switches.
Overflow Prevention: Overflow prevention mechanisms, such as drip trays or nozzles with shut-off valves, are often in place to catch any excess liquid and maintain a clean and accurate fill.
Piston fillers use a piston and cylinder to draw a precise volume of liquid from a reservoir and then dispense it into the bottles. This filling method is accurate and can handle a wide range of viscosities .Piston fillers are often used in industries that demand high accuracy, such as pharmaceuticals, cosmetics, and specialty chemical manufacturing, where precise fill volumes are critical. The machine can fully equipped with servo motors .
A pump liquid filler works by using a pump mechanism to draw liquid from a source, typically a drum or reservoir, and then dispenses that liquid into containers. Pump fillers are commonly found in industries where a moderate level of precision is acceptable, such as the food and beverage industry for filling sauces, dressings. To control the amount of liquid dispensed into each container, pump fillers typically use one of two methods:
Pulse Timing: This method involves counting the number of gear revolutions or pump strokes to determine the precise amount of liquid delivered into each container.
Time-Based Fill: In this method, the pump runs for a preset amount of time to fill the container. However, this method may be slightly less accurate than pulse timing.
The pump filler can be equipped with servo motors.
Gravity filling machines rely on gravity to fill bottles with liquid, drawing from a time-based tank feed positioned above the filling head. . The product flows from a holding tank to the bottles due to gravity. This method is suitable for free-flowing liquids with the stable thickness without the need for extreme precision.
