Working Principle of Carbonated Soft Drink Filling Machine

Nowadays, a filling machine for liquids is used for carbonated and non-carbonated soft drinks. These drink-filling machines are designed to keep away dirt and bacteria. The working principle of the carbonated soft drink filling machine is easy to understand.

The carbonated soft drink pours down from the filler tank into the bottle. In the meantime, air from the soft drink bottle is eliminated with the help of an air tube. Once the level of soft drink in the bottle arrives at the nozzle opening of an air tube, the filling is terminated.

Two filling methods are quite common in the drink-filling industry: overpressure level filling and non-pressurized level filling. Let's have a look at these methods in detail.

Overpressure level filling:

Filling PET and glass bottles with carbonated soft drinks and beverages is possible. The overpressure level filling method makes bottling carbonated drinks possible without releasing CO2 from the drink. The filling is done under an N2 or CO2-controlled environment, which guarantees the preservation of high-quality carbonated soft drinks.

• Filling glass bottles

The working principle of glass bottle filling is quite simple. First, the carbonated soft drink runs into the glass bottle from the filler tank. All the air inside the glass bottle is removed via an air tube. The filling of the bottle is stopped when the drink reaches the bottleneck. The filling machine for liquid also prevents the release of carbon dioxide to ensure quality carbonated soft drinks.

• Filling to PET bottles

The bottle-filling machine for sale is designed to fill both PET and glass bottles on a single machine. The working principle of PET bottle filling is the same as that of the glass bottle.

Non-pressurized level filling:

This method involves both single-chamber and double-chamber filling. Under a single-chamber filling, light under-pressure or atmospheric pressure is maintained on the top of the carbonated soft drink in the filler tank. Here, the filler tank comprises two separate chambers; one chamber is filled with soft drinks, and the other is filled with air removed from the PET or glass bottles. The price of bottle-filling machines depends on their capacity and quality.

Basic filling principles:

• The bottle is pressurized, and then the carbonated soft drink pours into a valve through a tube. The valve incorporates an inductive flowmeter to scan the flow of the drink and passes the impulses to the control system.

• Once the quantity of impulses is recorded, the flowmeter shuts the filling valve.

• Soft drink fills the bottle alongside the walls, and air is extracted from the bottle simultaneously.