What Is a Can Filling Machine?
A can filling machine is a device used to fill liquids into can containers during the product manufacturing process.
Broadly speaking, can filling machines are a type of liquid-filling machine. Various models are available to accommodate different needs, including machines for small beverage cans, drums, and one-quart cans. Filling is typically controlled by dedicated control software, with the filling nozzle raised and lowered while detecting changes in weight using an integrated weighing device (e.g., load cell).
Nozzles can often be replaced with short or long types, depending on the product being filled. Additionally, these machines incorporate unique functions to prevent issues such as foaming or dripping. Can filling machines are available in fully automatic and semi-automatic types. For semi-automatic models, container movement and lifting are performed manually.
Principles of a Can Filling Machine
The operation of a can filling machine can be broadly divided into the following three aspects:
1. Products to Be Filled
Can filling machines are designed to fill a variety of liquid products. Below are common materials they handle. Some equipment is compatible with fizzy or viscous liquids:
- Beverages and carbonated drinks
- Paints and solvents
- Surface treatment agents
- Lubricants
- Surfactants (e.g., detergent raw materials)
- Alcohols
- Urethane
- Liquid nitrogen
Machines used in the food industry, such as for beverages, are designed to maintain high sanitary standards. Some models are explosion-proof, designed to withstand internal pressure and prevent ignition from external explosive gases. Certain machines can also fill cans with nitrogen simultaneously to prevent oxidation. Can filling machines are particularly suited for canned beer and liquid nitrogen. Some models can fill both cans and bottles.
2. Compatible Can Containers
The type of containers that can filling machines can handle varies by model. In addition to small beverage cans, they can fill 4L cans, 10L cans, 18L cans, 20L pails, and 200L drums. Machines are tailored for various industrial fields and applications.
3. Peripheral Equipment
Fully automatic can filling machines can be integrated with peripheral equipment, such as conveyors, to form a complete production line. Equipment upstream of can filling machines includes can washers, can dryers, and labeling machines. For chemical-related applications, local exhaust hoods can also be incorporated to ensure safety.